U.S. PATENT AND TRADEMARK OFFICE
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U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
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Class 474
ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS
Class Definition:
GENERAL STATEMENT OF CLASS SUBJECT MATTER
A. This is the generic class for a power transmission system
wherein a power input pulley* is in driving engagement with a
belt* for advancing the belt along an endless path of travel
and wherein a power output pulley is engaged with the belt at
a position along such endless path to be driven by the belt
and supply power for driving a load; or for a component part
or auxiliary device intended for use in such system and not
provided for elsewhere.
B. This is also the generic class for structure, per se, in
the form of a pulley*, guide roll* or other belt*-contacting
structure for driving, guiding, tensioning, or shifting the
belt, or for such structure in combination with a nominally
claimed belt.
(1) Note. A nominal recitation of a load device in
combination with and driven by the power transmission system
defined in the Class Definition, paragraph A of the General
Statement of Class Subject Matter, above, will not exclude a
patent from being placed in this class.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
A method or apparatus for manufacturing a device of this
class is not found herein, but is found in an appropriate
manufacturing class. See References to Other Classes, below.
A belt*, per se, is found in numerous classes as will be
exemplified in the search and line notes below. Unless a line
note is specifically provided in the SEARCH CLASS notes
below, a patent claiming a belt, per se, is properly
classified in this or another class providing for such belt
if the sole disclosure is for subject matter provided for in
such class, or in Class 428 depending on the line established
between such class and Class 428. If there is disclosure for
multiple intended uses for the belt, one of which is for a
power transmission system as defined in the above paragraph A
of the General Statement of Class Subject Matter, then the
patent is properly classified in this class (474) unless
there is at least one claim specific to the intended use in
another class, in which instance classification is in the
other class.
Class 198, Class 226, and Class 254 provide specifically for
a device, per se, in the nature of a pulley*, guide roll*, or
other device for advancing, guiding, or directing a cable or
web of flexible or articulated material, which may be
endless, along an intended path of travel. In Class 198, the
intended use of such device is in connection with an endless
conveyor. In Class 226, the intended use of such device is
in connection with feeding of material of indefinite length
to a station where an operation is to be performed on the
material. In Class 254, the intended use of such device is
in connection with a cable for applying a pushing or pulling
force to an object to be moved. In each of these classes,
line notes should be inspected as to the line between
themselves or between other classes. However, the line
between these other classes (198, 226, and 254) and this
class (474) is as follows: (a) if the sole disclosure of the
device, per se, mentioned above is for intended use in a
system provided for in the Class Definition, paragraph A of
the General Statement of Class Subject Matter of this class
(474) or if the disclosure is unclear as to intended use but
it is apparent that the device may be used in said system,
classification is in this class (474); (b) if the sole
disclosure of the device, per se, mentioned above is for
intended use in connection with the kind of device identified
above with regard to one of the other classes (198, 226, or
254), then classification is in such other classes; (c) if
there is disclosure of multiple intended uses for the device,
one of which is appropriate for the system provided for in
the Class Definition, paragraph A of the General Statement of
Class Subject Matter of this class (474), then classification
is in this class unless there is at least one claim specific
to the intended use in one of the other classes (198, 226, or
254), in which instance classification is in the other
class.
This class was formed from patents in Class 74, subclasses
216.5-258 (inclusive), and in Class 74, subclasses 611 and
722. Regarding class superiority as between this class (474)
and Class 74, all subclasses appearing in the Class 74
schedule above subclass 640 are superior to the class.
Furthermore, a combination of a device of this subclass with
a Class 74 device as may be found in Class 74, subclasses
650, 655, 661, 664, 670, 718, 720, 721, 745+, or 190-216.3
(inclusive) is considered superior to this class. This class
is superior to all other subclasses in Class 74 indented
under subclass 640 and to all other subclasses coordinate
with Class 74, subclass 640, but lower in the Class 74
schedule than subclass 640.
Caveat. Other than the patents involved in the formation of
this class as identified in above, no other subclasses in
Class 74 or any other class were screened; and so, when
appropriate other search areas in Class 74 and in the classes
indentified in the Search Notes below should be given
consideration.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, particularly
256.5 for a cleaning device mounted to act on a moving
surface, and see (1) Note following the definition of
subclass 92 of this class (474) for a statement of the line.
16, Miscellaneous Hardware, particularly 210 for sash cord
guide.
19, Textiles: Fiber Preparation, particularly 244 for a
fiber drafting apron in the form of an endless band; and
subclasses 240+ for a variable speed device operating in
connection with a fiber drafting roll.
24, Buckles, Buttons, Clasps, etc., particularly 31 for a
device for connecting opposite ends of a band to form a
belt*. A connector, per se, is in Class 24, but a connector
claimed in combination with belt structure is in this class
(474).
29, Metal Working, particularly 892 for a method of making a
pulley* or guide roll* (See Lines With Other Classes and
Within This Class, above.).
30, Cutlery, particularly subclass 380 and 381+ for a
hand-manipulable cutting implement in the form of an endless
band or chain.
57, Textiles: Spinning, Twisting, and Twining, particularly
subclass 21 for an aparatus for forming an endless band by a
twisting or twining operation; subclasses 104+ for a belt*
power transmission for driving a spinning, twisting, or
twining mechanism; and subclass 201 for an endless band
formed by a spinning, twisting, or twining operation.
59, Chain, Staple, and Horseshoe Making, for a method or
apparatus for manufacturing a device found in Class 474.
(See Lines With Other Classes and Within This Class, above.)
59, Chain, Staple, and Horseshoe Making, particularly 1 for
a method or apparatus for making a chain; and subclasses 78+
for a general purpose or ornamental chain.
72, Metal Deforming, subclass 409.15 for apparatus to apply
a deformable metal belt clip.
74, Machine Element or Mechanism, appropriate subclasses for
other power transmission systems and components, and see
Lines With Other Classes, and Within This Class, above.
83, Cutting, particularly 788 for cutting device in the form
of an endless band or chain. Regarding Class 83 or any other
cutting class, a patent claiming a belt*, per se, for
carrying a cutting element is classified in this class (474)
unless there is a claim reciting a cutting element, such as a
cutting tip or blade which is to perform a cutting function.
104, Railways, 172.1 and 173.1+ for chain or cable car
propelling means.
105, Railway Rolling Stock, particularly 101 for a rolling
stock wheel or axle drive system in the form of a belt* and
pulley* drive; and subclasses 105+ for a belt tightener for
such a drive system.
106, Compositions: Coating or Plastic, particularly subclass
36 for a coating or plastic composition used to enhance
friction grip such as on a pulley*.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
particularly 137 for a method of making a belt*, and see
Lines With Other Classes and Within This Class, above.
162, Paper Making and Fiber Liberation, particularly 348 for
an endless band forming mold used in producing liquid laid
fibrous products; subclass 257 for automatic control of
transverse movement of such a forming mold; and subclass 273
for means to maintain a desired degree of tension in an
endless forming surface.
180, Motor Vehicles, particularly subclass 230, 231, 239,
241, 251, 350+, 357, 366, and 373 for a motor vehicle
including an endless band for transmitting drive to the
wheels.
184, Lubrication, appropriate subclasses for lubrication
systems in general, and particularly 15.1 for a chain or
cable lubricator. If the structure of a belt*, pulley* or
guide roll* is modified for the purpose of facilitating
admission of lubricant, classification is in Class 474, but
lubrication devices and systems are in Class 184.
185, Motors: Spring, Weight, or Animal Powered, particularly
subclass 16 for a belt* intended to be driven by an animal
treading on the belt.
187, Elevator, Industrial Lift Truck, or Stationary Lift for
Vehicle, 251 for means for raising or lowering an elevator
car which includes a car supporting cable.
191, Electricity: Transmission to Vehicles, particularly 63
for a trolley head mounted for rolling contact with an
electric conductor.
198, Conveyors: Power-Driven, particularly 804 for an
endless conveyor, and see the line notes in Lines With Other
Classes and Within This Class, above. See also a listing of
the other classes having structure pertinent to an endless
conveyor following the definition of subclass 804 in Class
198, and a listing of classes pertinent to belt* tighteners
following the definition of subclass 813 in Class 198.
211, Supports: Racks, particularly 119.02 for an endless
cable clothesline with supporting and tightening structure.
226, Advancing Material of Indeterminate Length, appropriate
subclasses for structure for driving or guiding material of
indeterminate length, and see the line note in Lines With
Other Classes and Within This Class, above.
242, Winding and Reeling, appropriate subclasses for a reel,
spool, guide, or tensioning device used in connection with
winding of flexible material.
248, Supports, particularly 646 for a support for a movable
machine wherein adjustability may provide a belt*-tensioning
feature.
254, Implements or Apparatus for Applying Pushing or Pulling
Force, appropriate subclasses for a drum or guide intended to
be used in connection with a cable for applying a pulling or
pushing force to an object to be moved, and see the lines
notes in Lines With Other Classes and Within This Class,
above.
280, Land Vehicles, particularly subclass 250 and 261 for a
land vehicle having a belt or chain power transmission.
305, Wheel Substitutes for Land Vehicles, appropriate
subclasses for an endless track intended for use as a wheel
substitute on a land vehicle.
318, Electricity: Motive Power Systems, for electric motor
control, and particularly 6 for control of tension in
material being driven; subclass 10 for control of forward or
reverse of a device being driven; subclass 11 for control for
variable speed of a device being driven; and subclass 15 for
electric motor driven gearing including belt and pulley drive
systems.
322, Electricity: Single Generator Systems, subclass 42 for
control for a belt drive in such a system; and subclass 43
for control of belt slip.
384, Bearings, appropriate subclasses for bearings, per se,
which may be used with a pully* or guide roll*.
399, Electrophotography, 162 for photoconductive belt
members and subclasses 297+ for transfer, particularly
subclass 313 for roller or belt electrostatic transfer.
403, Joints and Connections, appropriate subclasses for
connections, per se, and particularly 230 for a connection
between the side of a member and a rod extending transverse
thereto.
428, Stock Material or Miscellaneous Articles, appropriate
subclasses for stock material, and see the reference to Class
474 in the Class Definition of Class 428.
433, Dentistry, subclass 105 and 110+ for dental apparatus
including an endless belt transmission.
451, Abrading, 296 for an abrading tool comprising an
endless band; and subclass 311 for a tightener for an
abrading band.
464, Rotary Shafts, Gudgeons, Housings, and Flexible
Couplings for Rotary Shafts, particularly 51 for a flexible
connection between a shaft and a driven member.
475, Planetary Gear Transmission Systems or Components for
planetary gear transmissions combined with a device of Class
474.
477, Interrelated Power Delivery Controls, Including Engine
Control, especially 44 for interrelated engine and belt-type
transmission control.
492, Roll or Roller, for a roll, per se, not elsewhere
provided for, and see the search notes thereunder.
GLOSSARY:
The following Glossary will define certain terms used in the
class and subclass definitions of this class so as to
facilitate understanding and simplify such definitions.
BELT
A power transferring member forming an endless loop and
constructed of flexible material or of articulated rigid
links to permit the member to conform to a radius of
curvature of a pulley* drive face and intended, in use, to be
driven in an endless path; and, by contact with the pulley
drive face, to transmit power to or extract power from the
pulley.
PULLEY
A device rotatable about an axis and having a drive face
radially spaced from the axis of rotation for intended power
transferring engagement with a belt* to drive the belt on its
endless path or to extract power from the belt to drive an
output load device.
GUIDE ROLL
A device rotatable about an axis and having a
belt*-contacting face radially spaced from the axis of
rotation for intended engagement with the belt to aid in
directing the belt along an intended path of travel. A guide
roll, as distinguished from a pulley*, is not intended to
provide driving power to, or extract power from, a belt.
SUBCLASSES
Subclass:
1
CONTROL FOR FORWARD AND REVERSE:
This subclass is indented under the class definition.
Subject matter wherein mechanism is provided for changing the
direction of rotation of an output load driving member from
clockwise to counterclockwise or vice versa. [figure]
[figure]
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclass 37 and 89.2+ for
mechanical movements for motion conversion using belt and
pulley drive means, and appropriate subclass under 640+ for
other gearing and gearing combination having reversing
means.
318, Electricity: Motive Power Systems, subclass 10 for
control of forward and reverse in a device being driven.
475, Planetary Gear Transmission Systems or Components,
appropriate subclasses, for planetary gearing systems having
reversing means.
Subclass:
2
Cyclical or sequential (e.g., machine controlled, etc.):
This subclass is indented under subclass 1. Subject matter
wherein the mechanism functions to periodically change the
direction of rotation of the load driving member according to
a predetermined program without operator intervention.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
71 for cyclical or sequential operation in a variable speed
arrangement.
Subclass:
3
Including device for shifting belt laterally of its direction
of run:
This subclass is indented under subclass 2. Subject matter
wherein the mechanism includes a member for moving a belt* in
either of opposite directions parallel to the longitudinal
extent of the rotational axis of a pulley*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
6 80+, 83, 102+, and 122+, for other structure involving
lateral shift of a belt such as for reversing the direction
of rotation of a load driving member, for causing a change in
speed ratio, for removing a belt from a pulley, or for
correcting belt training deviation.
Subclass:
4
Including separate belts for forward and reverse:
This subclass is indented under subclass 1. Subject matter
wherein separate belts* are selectively engageable in power
transmitting relationship between a power input member and
the power output load driving member, one of the belts being
engaged when it is desired to drive the load driving member
clockwise, and the other of the belts being engaged when it
is desired to drive the load driving member counterclockwise.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
73 for a variable speed drive arrangement using plural
belts.
84 for a belt and pulley drive including a plurality of
separate belts.
Subclass:
5
Belt selection by shifting or tightening belt:
This subclass is indented under subclass 4. Subject matter
wherein selective engagement or disengagement of a belt* is
accomplished by moving the belt into or from power
transmitting engagement with a pulley*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
75 for a device for tightening a belt on a pulley associated
with a variable speed drive.
101 for a device for adjusting belt tension.
Subclass:
6
Including device for shifting belt laterally of its direction
of run:
This subclass is indented under subclass 5. Subject matter
wherein the mechanism includes a member for moving a belt* in
either of opposite directions parallel to the longitudinal
extent of the rotational axis of a pulley*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 80+, 83, 102+, and 122+, for other structure involving
lateral shift of a belt such as for reversing the direction
of rotation of a load driving member, for causing change in
speed ratio, for removing a belt from a pulley, or for
correcting belt training deviation.
Subclass:
7
Including coaxial pulleys rotated in opposite directions by
single endless belt simultaneously engaging both pulleys:
This subclass is indented under subclass 1. Subject matter
including two pulleys* mounted for rotation about a common
axis and wherein a single endless belt* is in driving
engagement with both pulleys, the belt being so arranged
relative to the pulleys that movement of the belt along its
path of travel concurrently drives one pulley in a clockwise
direction and the other pulley in a counterclockwise
direction. [figure]
Subclass:
8
PULLEY WITH BELT-RECEIVING GROOVE FORMED BY DRIVE FACES ON
RELATIVELY AXIALLY MOVABLE COAXIAL CONFRONTING MEMBERS (E.G.,
EXPANSIBLE CONE PULLEY, ETC.):
This subclass is indented under the class definition.
Subject matter wherein a pulley* includes a pair of separate
components having belt*-engaging surfaces facing each other
for receiving a belt in the space between such surfaces, the
components being mounted for relative adjustment toward and
away from each other in directions generally parallel to the
longitudinal extent of the axis of rotation of the pulley to
increase or decrease the extent of gripping force exerted by
the surfaces on the belt or to increase or decrease the
effective diameter of the pulley. [figure]
Subclass:
9
Members are gripping jaws actuated during each rotation of
pulley:
This subclass is indented under subclass 8. Subject matter
wherein during each full revolution of the pulley* there is a
first period of time when opposed belt*-engaging surfaces are
in driving engagement with the belt, and a second period of
time when opposed belt-engaging surfaces are out of driving
engagement with the belt, and wherein the components are
mounted for relative cyclical movement accomplished by
interaction with the belt or by an auxiliary device, whereby
during the second period of time the belt-engaging surfaces
are separated to facilitate exit and entrance of the belt
from and to the space between the surfaces, and whereby the
belt engaging surfaces have relative movement to a position
toward each other during the first period of time to increase
the engagement force of the surfaces with the belt.
[figure]
Subclass:
10
Via relatively rotating cam and follower:
This subclass is indented under subclass 9. zSubject matter
including relatively rotating elements having actuating
surfaces in rolling or sliding engagement with each other,
said actuating surfaces being so contoured with respect to
each other, and so associated with respect to one of said
belt*-engaging components that relative rotation between such
actuating surfaces is converted into said relative cyclical
movement of said one of said belt-engaging components.
[figure]
Subclass:
11
Speed responsive:
This subclass is indented under subclass 8. Subject matter
including means for sensing velocity or change of velocity of
a load device or of a member operating in a drive train to
drive the load device; and, responsive to such sensed
velocity or change of velocity, said means acts to alter the
relative axial position of said components. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
50 and 70, for other arrangements using a speed responsive
actuator in a belt and pulley drive system.
Subclass:
12
And load responsive:
This subclass is indented under subclass 11. Subject matter
further including means for sensing resistance to movement or
change in resistance to movement of a load device or of a
member in a drive train to drive the load device; and, in
response to such sensed resistance or change of resistance to
movement, said means acts to alter the relative axial
position of said components. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
17 50, 70, and 109, for other arrangements using a load
responsive actuator in a belt and pulley drive system.
Subclass:
13
To centrifugal force:
This subclass is indented under subclass 11. Subject matter
wherein the means for sensing the velocity or change of
velocity is mounted for rotation with a rotatable member and
includes a material or part movable outwardly by inertial
force from the axis of rotation of the rotatable member.
[figure]
Subclass:
14
Via pivoted weight:
This subclass is indented under subclass 13. Subject matter
wherein the part movable outwardly by inertial force
comprises a device pivotal about a fixed axis. [figure]
Subclass:
15
Via ball:
This subclass is indented under subclass 13. Subject matter
wherein the part movable outwardly by inertial force
comprises one or more spherically shaped devices. [figure]
Subclass:
16
Via liquid:
This subclass is indented under subclass 13. Subject matter
wherein the material movable outwardly by inertial force is a
liquid. [figure]
Subclass:
17
Load responsive:
This subclass is indented under subclass 8. Subject matter
including means for sensing resistance to movement or change
in resistance to movement of a load device or of a member in
a drive train to drive the load device; and, in response to
such sensed resistance or change of resistance to movement,
said means acts to alter the relative axial position of said
components. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
12 for a combined speed and load responsive device for
altering the relative axial position of coaxial confronting
drive faces.
50 70, and 109, for other arrangements using a load
responsive actuator in a belt and pulley drive system.
Subclass:
18
With actuator driven by electrical or fluid motor:
This subclass is indented under subclass 17. Subject matter
wherein the means for altering the relative axial position of
the components is accomplished with the help of force derived
from or transmitted via electrical energy or the exertion of
force upon a fluid. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
28 51, 103+, and 110, for other arrangements using an
electrical or fluid motor as a drive for an actuator in a
belt and pulley drive system.
Subclass:
19
Via relatively rotating cam and follower:
This subclass is indented under subclass 17. Subject matter
wherein the means responsive to the sensed resistance or
change of resistance to movement includes relatively rotating
elements having actuating surfaces in rolling or sliding
engagement with each other, said actuating surfaces being so
contoured with respect to each other, and so associated with
respect to one of said belt*-engaging components that
relative rotation between such actuating surfaces is
converted into axial movement of one of said belt-engaging
components. [figure]
Subclass:
20
Including interengaged threads:
This subclass is indented under subclass 19. Subject matter
wherein each of the relatively rotating elements is generally
cylindrical in cross sectional configuration, a cylindrical
wall of one of the elements having an external helical ridge
forming an actuating surface, and a cylindrical wall of the
other of the elements having an internal helical ridge
forming a cooperating actuating surface; the two cylindrical
elements being coaxially mounted with the external ridge of
one interengaged with the internal ridge of the other so that
relative rotation of the elements also causes relative axial
movement of the elements and axial movement of a component
associated with the axially moved element. [figure]
Subclass:
21
Including plural separate cam and follower pairs for
adjusting plural members:
This subclass is indented under subclass 19. Subject matter
including an additional pair of relatively rotating elements
having actuating surfaces in rolling or sliding engagement
with each other, the additional pair of actuating surfaces
being so contoured with respect to each other, and so
associated with respect to an additional belt*-engaging
component that relative rotation between such additional pair
of actuating surfaces is converted into axial movement of the
additional belt-engaging component. [figure]
Subclass:
22
Temperature responsive:
This subclass is indented under subclass 8. Subject matter
including means to sense a condition or change of condition
as regards heat or coldness of a member operating in a
pulley* drive train or in the environment surrounding the
drive train; and, in response to such sensed condition, or
change of condition, said means acts to alter the relative
axial position of said components. [figure]
Subclass:
23
Adjusted by power from pulley drive train:
This subclass is indented under subclass 8. Subject matter
wherein an auxiliary device is constantly rotated during
rotation of the pulley* by the same source which causes
rotation of the pulley, and such device supplies the force
for relative adjustment of the pulley components.
(1) Note. The auxiliary device may be separated from the
pulley or may be a component integrally connected to, or
forming a part of, the pulley.
(2) Note. For a patent to be placed herein a human operator
may selectively initiate the adjustment such as by selective
clutch engagment, but the auxiliary device provides the sole
actuating force. If a human operator provides the actuating
force, even though such force may be multiplied as through
levers, screws, etc., the patent is placed in subclasses
below such as 29+ or 37+. [figure]
Subclass:
24
And member has plural, relatively axially movable drive
faces:
This subclass is indented under subclass 8. Subject matter
wherein at least one of the components is formed of a
plurality of elements each having a belt-engaging surface,
the elements of each component being adjustable with respect
to each other in directions generally parallel to the
longitudinal extent of the pulley* axis. [figure]
Subclass:
25
And pulley shiftable laterally of its axis of rotation:
This subclass is indented under subclass 8. Subject matter
wherein a pulley* is mounted for movement in a direction
perpendicular to the longitudinal extent of the pulley axis
of rotation, the pulley which is so mounted either being the
pulley having adjustable components or another pulley in the
drive train. [figure]
Subclass:
26
Mounted on laterally shiftable motor:
This subclass is indented under subclass 25. Subject matter
wherein the pulley* is mounted on the shaft of a device which
supplies the primary source of power for driving the pulley,
said device with its shaft and pulley being movable in a
direction perpendicular to the longitudinal extent of this
shaft axis. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
114 for an adjustable mounted motor which is movable such as
for affecting the extent of drive traction between the belt
and pulley.
Subclass:
27
Mounted on laterally shiftable countershaft:
This subclass is indented under subclass 25. Subject matter
wherein first and second belts* in a drive train are arranged
in series driving relationship via an intermediate shaft
carrying first and second pulleys*, and wherein said
intermediate shaft is mounted for movement in a direction
perpendicular to the longitudinal extent of the axis of the
intermediate shaft. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
89 for a device having plural belts in series driving
relationship interconnected via a laterally shiftable
countershaft.
Subclass:
28
Fluid pressure actuator for adjustment of member:
This subclass is indented under subclass 8. Subject matter
wherein the relative adjustment of said belt*-engaging
components is accomplished by energy derived from or
transmitted via the exertion of force upon a fluid. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 51, 103+, and 110, for other arrangements using an
electrical or fluid motor as a drive for an actuator in a
belt and pulley drive system.
Subclass:
29
Including actuator interconnecting plural pulleys on spaced
shafts for simultaneous adjustment:
This subclass is indented under subclass 8. Subject matter
wherein each of a pair of spaced shafts carries a pulley*
having adjustable belt*-engaging components and wherein a
common motion-inducing member is interlinked with each pulley
to provide concurrent axial adjustment of at least one of the
adjustable components on each of the pulleys. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
52 for mechanism for simultaneously adjusting plural pulleys
of the kind provided for in subclasses 47+.
Subclass:
30
For axial adjustment of each member on each pulley:
This subclass is indented under subclass 29. Subject matter
wherein the motion-inducing member is interlinked with the
pulleys* to provide concurrent axial adjustment of each of
the pair of belt*-engaging components on each of the pulleys.
[figure]
Subclass:
31
By dual lever mechanism:
This subclass is indented under subclass 30. Subject matter
wherein the motion-inducing member includes a pair of arms
each mounted for pivotal movement about its own axis; and
wherein one of the arms is connected to one of the movable
belt*-engaging components on each of the spaced pulleys*, and
the other arm is connected to the other of the belt-engaging
components on each of the spaced pulleys, so that
simultaneous pivoting of the arms causes concurrent
adjustment of each pair of belt-engaging components on each
pulley. [figure]
Subclass:
32
Plural members forming plural belt-receiving grooves on
common axis:
This subclass is indented under subclass 8. Subject matter
including at least three coaxial components having
belt*engaging surfaces arranged at intervals to define at
least two circumferentially extending belt-receiving spaces
between such surfaces along the axis of rotation of the
components. [figure]
Subclass:
33
With member common to plural grooves:
This subclass is indented under subclass 32. Subject matter
wherein at least one of the components has belt*-engaging
surfaces on each of opposite sides thereof so as to form a
wall for two adjacent belt-receiving spaces. [figure]
Subclass:
34
Plural members common to plural grooves:
This subclass is indented under subclass 33. Subject matter
wherein at least two of the components each have
belt*-engaging surfaces on each of opposite sides thereof.
[figure]
Subclass:
35
Axially spaced members simultaneously adjustable:
This subclass is indented under subclass 32. Subject matter
wherein at least two of the components are mounted for
concurrent movement in a direction parallel to the
longitudinal extent of the axis of rotation. [figure]
Subclass:
36
On bolt radially spaced from pulley axis:
This subclass is indented under subclass 35. Subject matter
wherein means interconnecting said components includes one or
more rodlike members extending in a direction generally
parallel to the longitudinal extent of the axis of rotation
and spaced radially from a shaft upon which the components
are mounted. [figure]
Subclass:
37
By manual actuator for one or both confronting members:
This subclass is indented under subclass 8. Subject matter
having manually operated motion-inducing means for causing
relative adjustment of said components toward and away from
each other. [figure]
Subclass:
38
With neutral condition of drive:
This subclass is indented under subclass 37. Subject matter
wherein said components are adjustable to a position where
neither of the facing belt*-engaging surfaces are engaged
with the belt, and wherein structure is provided separate
from said components to facilitate supporting the belt to
allow relative motion between the belt and the components.
[figure]
Subclass:
39
Screw actuated:
This subclass is indented under subclass 37. Subject matter
wherein the motion-inducing means comprises two relatively
rotatable members having interengaged helical threads, one of
such members being fixed and the other rectilinearly movable
in a direction parallel to the axis of rotation so that
relative rotation between the members causes such rectilinear
movement, and one of said members forming a part of or being
interconnected to one of said adjustable components so that
said rectilineal movement causes said relative adjustment of
said components. [figure]
Subclass:
40
With additional linkage in actuator drive train:
This subclass is indented under subclass 39. Subject matter
wherein rectilineal motion is transmitted from said
rectilinearly movable member to said axially adjustable
component via a pivotally mounted lever. [figure]
Subclass:
41
By opposite-handed screw threads engaging adjacent members:
This subclass is indented under subclass 39. Subject matter
wherein each of the relatively axially adjustable components
includes helical threads cooperating with helical threads of
the relatively rotatable member, the helical threads being so
arranged that relative rotation between the threaded members
causes both components to move simultaneously axially toward
each other or both to move simultaneously axially away from
each other depending on the direction of rotation.
[figure]
Subclass:
42
With means to positively lock members in adjusted position:
This subclass is indented under subclass 39. Subject matter
including an auxiliary device actuatable between hold and
release positions for preventing relative rotation between
said relatively movable motion-inducing members when said
device is actuated to a hold position and for permitting
relative rotation between said relatively movable
motion-inducing members when said device is in a release
position. [figure]
Subclass:
43
Including lubrication or particular guide or bearing for
movable member:
This subclass is indented under subclass 8. Subject matter
wherein (1) structure is provided to facilitate lubrication
of a surface of the movable component, or (23) wherein a
separate device is mounted between the movable component and
its support, (a) said separate device serving to guide
movement of the movable component along a predetermined axial
path relative to its support, or (b) said device comprises
bearing structure facilitating relative movement between the
movable component and its support. [figure]
SEE OR SEARCH CLASS:
184, Lubrication, appropriate subclasses for lubrication in
general; and see the reference to Class 184 under "SEARCH
CLASS" in the class definition of Class 474 for a statement
of the line between classes.
384, Bearings, appropriate subclasses for bearings, per se.
Subclass:
44
Self-lubricated bearing:
This subclass is indented under subclass 43. Subject matter
wherein said device comprises a self-sustaining sleeve which
inherently has a low coefficient of friction, or which has
been impregnated with a lubricant. [figure]
Subclass:
45
With lubrication of support for movable member:
This subclass is indented under subclass 43. Subject matter
wherein the structure is to facilitate injection of lubricant
from an auxiliary source to a surface of the movable
component. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
91 for structure facilitating lubrication of a belt* or
pulley*.
Subclass:
46
With spring device:
This subclass is indented under subclass 8. Subject matter
wherein significance is attributed to the structure of an
auxiliary resilient device which engages a movable one of
said relatively adjustable to components to bias said movable
component in a direction generally parallel to the
longitudinal extent of the axis of rotation of the pulley*.
[figure]
Subclass:
47
PULLEY WITH EXPANSIBLE RIM MEANS OR PULLEYS WITH ALTERNATELY
USEABLE NESTABLE RIMS:
This subclass is indented under the class definition.
Subject matter wherein a pulley* includes a belt*-engaging
surface of surfaces adjustably movable in a direction
radially outward of the axis of rotation of the pulley to
increase the effective diameter of the pulley; or wherein
plural alternately usable pulleys are arrangeable with
respect to each other in a manner such that a common radial
line from the axis of rotation passes first through the
belt-engaging surface of the inactive pulley then through the
belt-engaging surface of the active pulley. [figure]
SEE OR SEARCH CLASS:
242, Winding, Tensioning, or Guiding, 571 for expansible rim
structure associated with winding or unwinding.
Subclass:
48
Nestable rims of diverse kind (e.g., one grooved and the
other cylindrical, etc.):
This subclass is indented under subclass 47. Subject matter
wherein at least two of plural alternately useable pulleys*
are different kinds of pulleys, the different kinds being:
(a) those having a cylindrical belt-engaging surface, (b)
those having a circumferentially grooved belt-engaging
surface, or (c) those having circumferentially spaced
belt-engaging teeth. [figure]
Subclass:
49
Structure for variably adjusting radius of rim section:
This subclass is indented under subclass 47. Subject matter
including motion-inducing mechanism for moving the
belt*-engaging surface or surfaces of the pulley* radially
outward. [figure]
Subclass:
50
By actuator responsive to speed or load:
This subclass is indented under subclass 49. Subject matter
including means for sensing a condition of velocity, change
of velocity, resistance to movement, or change of resistance
to movement of a load device or of a member operating in a
drive train to drive the load device; and, in response to
such sensed condition or change of condition, said means acts
to actuate said motion-inducing mechanism. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
11 17+, 70, and 109, for other arrangements using a load or
speed responsive actuator in a belt and pulley drive system.
Subclass:
51
By fluid pressure actuator or inflatable rim:
This subclass is indented under subclass 49. Subject matter
wherein the motion-inducing mechanism is actuated by energy
derived from or transmitted via the exertion of force upon a
fluid; or wherein the belt*-engaging surface is expandible by
introduction of a fluid therein to increase the effective
diameter of the pulley*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 28, 103+, and 110, for other arrangements using an
electrical or fluid motor as a drive for an actuator in a
belt and pulley drive system.
Subclass:
52
Including means interconnecting plural pulleys for
simultaneous adjustment:
This subclass is indented under subclass 49. Subject matter
wherein plural pulleys* each include adjustable
belt*-engaging surface or surfaces, and wherein mechanism is
provided for concurrently adjusting the surface or surfaces
of each of the pulleys to increase or decrease the effective
diameter of the pulleys. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
29 for mechanism for simultaneously adjusting plural pulleys
of the kind provided for in subclasses 8+.
Subclass:
54
By actuator having collar concentric with, and movable
axially on, pulley axis:
This subclass is indented under subclass 49. Subject matter
wherein the motion-inducing mechanism includes a ringlike
member positioned around the axis of rotation of the pulley*
and movable in a direction parallel to the longitudinal
extent of the pulley axis. [figure]
Subclass:
55
Collar interconnected with rim sections via pivoted link:
This subclass is indented under subclass 54. Subject matter
wherein the ringlike member is connected to the adjustable
movable belt*-engaging surfaces via pivotable connecting
means. [figure]
Subclass:
56
By actuator having collar concentric with, and rotatable in
plane perpendicular to pulley axis:
This subclass is indented under subclass 49. Subject matter
wherein the motion-inducing mechanism includes a ringlike
member positioned around the axis of rotation of the pulley*,
and rotatable around the pulley axis but fixed in regard to
any movement in a direction parallel to the longitudinal
extent of the pulley axis. [figure]
Subclass:
57
Collar interconnected with rim sections via pivoted link:
This subclass is indented under subclass 56. Subject matter
wherein the ringlike member is connected to the adjustably
movable belt*-engaging surfaces via pivotable connecting
means. [figure]
Subclass:
58
POWER OUTPUT PULLEY SELECTIVELY SHIFTABLE TO DIFFERENT POWER
OUTPUT LOCATIONS RELATIVE TO INPUT PULLEY:
This subclass is indented under the class definition.
Subject matter which includes a final driven pulley* in a
drive train supplied with power via a power input pulley and
a belt* or belts, the final driven pulley supplying power to
drive a load device and being movably supported in such a
manner as to facilitate moving the pulley to provide output
power at different locations relative to the power input
pulley.
(1) Note. For a patent to be placed herein it must be the
final output pulley and not only an intermediate pulley which
is movable and the movement must be for the purpose of
supplying output power at plural diverse locations and not
merely to increase or decrease belt tension. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
27 and 89, for a movable shaft carrying an intermediate
pulley in a drive train; and see (1) Note above.
113 for a pulley shiftable merely to increase or decrease
belt tension, and see (1) Note above.
SEE OR SEARCH CLASS:
433, Dentistry, subclass 105 and 110+ for dental apparatus
including an endless belt power transmission.
Subclass:
59
Pivotable about plural axes:
This subclass is indented under subclass 58. Subject matter
wherein the final drive pulley* is mounted for pivotable
movement about more than a single axis. [figure]
Subclass:
60
Nonparallel axes:
This subclass is indented under subclass 59. Subject matter
wherein the plural axes about which the final drive pulley*
is pivoted, are angularly related with respect to each other.
[figure]
Subclass:
61
POWER INPUT AND OUTPUT PULLEYS ON NONPARALLEL AXES:
This subclass is indented under the class definition.
Subject matter which includes a driven pulley* in a drive
train supplied with power via a power input pulley and a
belt* or belts, and wherein the axis about which the driven
pulley rotates is disposed at an angle relative to the axis
about which the power input pulley rotates. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
58 for structure wherein a power output pulley is
selectively shiftable to different power-output locations
relative to an input pulley whereby the axes of the pulleys
may be angularly related.
Subclass:
62
With common belt engaging both pulleys:
This subclass is indented under subclass 61. Subject matter
wherein a single belt* is in driving engagement with both of
the angularly related pulleys*. [figure]
Subclass:
63
And shiftable guide roll engaging belt run:
This subclass is indented under subclass 62. Subject matter
including a guide roll* for contacting the belt at a location
between the pulleys*, and wherein said guide roll is movably
mounted for adjustment of its position relative to the
angularly related pulleys. [figure]
Subclass:
64
PLURAL TURNS OF SAME BELT ABOUT PULLEY AXIS:
This subclass is indented under the class definition.
Subject matter including a belt* and a pulley* or a belt and
plural coaxially mounted pulleys, wherein the belt has
multiple turns about rotational axis of the pulley or coaxial
pulleys. [figure]
Subclass:
65
With flexible belt-tracking guide helically coiled about
pulley:
This subclass is indented under subclass 64. Subject matter
and further including an auxiliary endless member capable of
conforming to the curvature of a pulley* drive face, and
being helically wound about the pulley axis and positioned
between the belt* and pulley drive face to cause the belt
turns to follow an intended path circumferentially about the
pulley. [figure]
Subclass:
66
Plural turns of same belt about axis of each of laterally
spaced pulleys:
This subclass is indented under subclass 64. Subject matter
including an additional pulley* or coaxial pulleys mounted
for rotation about an axis spaced in a direction
perpendicular to the longitudinal extent of the axis of the
first-mentioned pulley or pulleys, and wherein a single belt*
has multiple turns extending about each of the spaced axes.
[figure]
Subclass:
67
With guide roll:
This subclass is indented under subclass 66. Subject matter
and further including a guide roll* for contacting the belt*.
[figure]
Subclass:
68
Plural guide rolls:
This subclass is indented under subclass 67. including an
additional guide roll* mounted for rotation about an axis
spaced from the axis of the first-mentioned guide roll.
[figure]
Subclass:
69
CONTROL FOR VARIABLE INPUT TO OUTPUT SPEED-RATIO:
Subject matter under the class difinition wherein the
mechanism is provided for changing the number or fractional
number of revolutions made by an output load driving member
for each revolution made by an input member, the output and
input members being interconnected via a belt*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
8 for a variable speed device using a pulley with a
belt-receiving groove formed by drive faces on relatively
axially movable coaxial confronting members.
47 for a variable speed device using a pulley with
expansible rim means or pulleys with alternately useable
nestable rims.
SEE OR SEARCH CLASS:
19, Textiles: Fiber Preparation, 240 for speed changing in
connection with a fiber drafting device.
57, Textiles: Spinning, Twisting, and Twining, subclass 93
for speed adjustment of a driving mechanism.
74, Machine Element or Mechanism, appropriate subclasses for
other gearing and gearing combinations having control for
variable speed.
180, Motor Vehicles, subclass 230 for a two-wheeled vehicle
with change speed means between the motor and driven wheel.
318, Electricity: Motive Power Systems, 6 for control of
variable speed in a device being driven.
Subclass:
70
Condition responsive (e.g., responsive to speed, load,
etc.):
This subclass is indented under subclass 69. Subject matter
including means which senses a condition or change of
condition; and, in response thereto, said means acts to
change the number or fractional number of revolutions made by
the output load driving member for each revolution of the
input member. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
11 17+, 50, and 109, for other arrangements using a load or
speed responsive actuator in a belt and pulley drives
system.
Subclass:
71
Cyclical or sequential (e.g., machine controlled, etc.):
This subclass is indented under subclass 69. Subject matter
wherein the mechanism functions to periodically change the
number of fractional number of revolutions made by the output
load driving member for each revolution made by the input
member according to a predetermined program without operator
intervention. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
2 for cyclical or sequential operation in an arrangment for
changing the direction of rotation of a load driving member.
Subclass:
72
Including intermeshing gears in one drive train:
This subclass is indented under subclass 69. Subject matter
wherein motion transmitting means between the input and
output members includes cooperating wheellike members with
intermeshing drive teeth, the cooperating wheel-like members
being arranged in series or parallel drive relation with a
belt* and pulley* drive. [figure]
Subclass:
73
Including separate belt on each of coaxial pulleys
selectively engaged in drive train:
This subclass is indented under subclass 69. Subject matter
including plural pulleys* mounted for rotation about a common
axis, each of said pulleys having its own belt* in driving
engagement therewith so that the belts provide parallel drive
paths between the input and output members, and said
mechanism including means permitting operator selection as to
which drive path is active to drive the output member.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
4 for a forward and reverse drive arrangement using plural
belts.
84 for a belt and pulley drive including a plurality of
separate belts.
Subclass:
74
With overrunning clutch:
This subclass is indented under subclass 73. Subject matter
which further includes structure for coupling together first
and second motion-transmitting members in the drive train in
such a manner that the second member is driven by the first
member for concurrent movement at the same rotational speed
in a particular direction; but which structure enables,
without operator intervention, relative rotation between the
first and second members when the second member is driven or
tends to be driven by auxiliary force in the particular
direction at a rotational speed greater than the speed
imported to the first member in the particular direction.
[figure]
Subclass:
75
Selection by tightening belt on selected pulley:
This subclass is indented under subclass 73. Subject matter
wherein the operator selection means includes a device
movable by the operator to increase the tension exerted on
the belt* in the active drive path. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for a device for tightening a belt on a selected pulley
associated with a forward and reverse drive.
101 for a device for adjusting belt tension.
Subclass:
76
Selection by axially movable pin engaged in opening through
selected pulley:
This subclass is indented under subclass 73. Subject matter
wherein the operator selection means includes one or more
rodlike elements shiftable in a direction parallel to the
longitudinal extent of the axis of rotation of the pulleys*,
and said pulleys include apertures for receiving said
rod-like elements to couple a particular selected pulley in
active driving engagement in the drive path. [figure]
Subclass:
77
Including coaxial pulleys shiftable axially to align selected
pulley with drive belt:
This subclass is indented under subclass 69. Subject matter
including plural pulleys* mounted for rotation about a common
axis and wherein means is provided for moving the pulleys in
a direction parallel to the longitudinal extent of the common
axis to properly position a selected pulley in a drive path.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
113 for a device for shifting a pulley such as to adjust
belt tension or to cause engagement and disengagement of
pulley with a belt.
Subclass:
78
Including belt shiftable axially from one to another surface
of stepped pulley or coaxial pulleys of different diameter:
This subclass is indented under subclass 69. Subject matter
including a pulley* or plural coaxial pulleys mounted for
rotation about an axis, said pulley or pulleys providing
separate axially spaced belt* drive faces located different
radial distances from the rotational axis; and further
including a belt* mounted for movement in a direction
parallel to the longitudinal extent of the rotational axis to
permit selective placement of the belt on one or another of
the separate axially spaced drive faces on the pulley or
pulleys. [figure]
Subclass:
79
And pulley pivotally mounted to facilitate belt shift:
This subclass is indented under subclass 78. Subject matter
wherein the pulley* or pulleys is/are mounted for pivotable
movement in a direction generally perpendicular to the
longitudinal extent of the axis of rotation of the pulley to
facilitate selective placement of the belt*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
113 for a device for shifting a pulley such as to adjust
belt tension or to cause engagement and disengagement of the
pulley with a belt.
Subclass:
80
And including belt-shifter mechanism:
This subclass is indented under subclass 78. Subject matter
and further including a device for moving the belt* in the
direction parallel to the longitudinal extent of the axis of
rotation of the pulley. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 6, 83, 102+, and 122+, for other structure involving
lateral shift of a belt such as for reversing the direction
of rotation of a load driving member, for causing a change in
speed ratio, for removing a belt from a pulley or for
correcting belt training deviation.
SEE OR SEARCH CLASS:
19, Textiles, Fiber Preparation, subclass 241 for belt
shifting to accomplish speed change in a fiber drafting
device.
Subclass:
81
For shifting belt from both power input and power output
pulleys:
This subclass is indented under subclass 80. Subject matter
wherein the belt*-moving device includes structure for moving
the belt along spaced parallel axes in a direction parallel
to the longitudinal extent of the axes, one of the axes being
the rotational axis of a pulley* or pulleys for the driving
belt, and the other of the axes being the rotational axis of
a pulley or pulleys driven by the belt. [figure]
Subclass:
82
Shifter mechanism including parallelogram linkage:
This subclass is indented under subclass 80. Subject matter
wherein the belt-moving device includes four arms pivotally
interconnected to form a four-sided figure, and wherein
opposite sides of the device remain parallel to each other
when the device is actuated to move the belt*. [figure]
Subclass:
83
Including mechanism for shifting belt axially on spaced
pulleys with tapering drive face:
This subclass is indented under subclass 69. Subject matter
including separate pulleys* mounted for rotation about axes
spaced from each other, the belt*-driving face of at least
one of the pulleys being inclined at a substantially constant
angle of inclination relative to the pulley axis; and further
including a device for moving the belt in a direction
parallel to the longitudinal extent of the axis of each
pulley. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 6, 80+, 102+, and 122+, for other structure involving
lateral shift of a belt such as for reversing the direction
of rotation of a load driving member, for causing a change in
speed ratio, for removing a belt from a pulley or for
correcting belt training deviation.
Subclass:
84
PLURAL BELTS OR PLURAL OUTPUT LOADS:
This subclass is indented under the class definition.
Subject matter wherein power is extracted from plural
locations in a belt* and pulley* drive to provide power for
driving a plurality of devices; or wherein a belt and pulley
drive includes a plurality of separate belts. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
4 for a forward and reverse drive arrangement with plural
belts.
73 for a variable speed drive arrangement using plural
belts.
Subclass:
85
Plural belts having interengaged drive surfaces:
This subclass is indented under subclass 84. Subject matter
wherein plural belts* have surface portions contacting each
other so that one belt drives the other.
(1) Note. For a patent to be placed herein both belts must
form a part of the power transmission path. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
100 for an auxiliary endless band which functions to merely
guide a belt* or to hold the belt in engagement with a
pulley.
SEE OR SEARCH CLASS:
198, Conveyors, Power-Driven, subclass 833 for a conveyor
belt engaged with the driving surface of a drive belt.
Subclass:
86
Plural output loads:
This subclass is indented under subclass 84. Subject matter
wherein power is extracted from plural locations in a belt*
and pulley* drive to provide power for driving a plurality of
devices. [figure]
Subclass:
87
With common belt concurrently engaging input and plural
output pulleys:
This subclass is indented under subclass 86. Subject matter
wherein a belt* is driven by a power input pulley, and this
same belt concurrently engages and drives plural output
pulleys to provide power for driving a plurality of devices
associated with the output pulleys. [figure]
Subclass:
88
Plural belts in series via countershaft:
This subclass is indented under subclass 84. Subject matter
wherein first and second belts* in a drive train are arranged
in series driving relationship via an intermediate shaft
carrying first and second pulleys* or carrying a single
pulley having axially spaced belt-engaging surfaces.
[figure]
Subclass:
89
Countershaft laterally shiftable:
This subclass is indented under subclass 88. Subject matter
wherein said intermediate shaft is mounted for movement in a
direction perpendicular to the longitudinal extent to the
axis of the intermediate shaft. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
27 for a laterally movable countershaft in a drive train
having a pulley* or pulleys of the kind provided for in
subclasses 8+.
Subclass:
90
STATIC ELECTRICITY ELIMINATOR:
This subclass is indented under the class definition.
Subject matter wherein significance is attributed to
structure for dissipating or preventing accumulation of
electrical charges in a belt* or pulley*. [figure]
Subclass:
91
STRUCTURE FACILITATING LUBRICATION OF BELT, PULLEY, OR GUIDE
ROLL:
This subclass is indented under the class definition.
Subject matter wherein the sturcture of a belt*, pulley*, or
guide roll* is provided to facilitate the admission of
grease, oil, or other lubricant to the interface between
relatively moving parts in the belt, pulley, or guide roll.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
45 for structure facilitating lubrication of a pulley of the
kind provided for in subclasses 8+.
SEE OR SEARCH CLASS:
184, Lubrication, appropriate subclasses; and see the
reference to Class 184 under "SEARCH CLASS" in the class
definition of Class 474 for a statement of the line between
the classes.
198, Conveyors: Power-Driven, 500 for a lubrication feature
associated with a conveyor.
305, Wheel Substitutes for Land Vehicles, 117 for a
lubrication feature.
Subclass:
92
CLEANING DEVICE FOR BELT, PULLEY, OR GUIDE ROLL:
This subclass is indented under the class definition.
Subject matter wherein significance is attributed to an
auxiliary device mounted for association with a belt* and
pulley* drive train for maintaining the cleanliness of the
belt, pulley, or guide roll* during power transmission to a
load device.
(1) Note. For a patent to be placed herein, the cleaning
device must be particularly adapted to be associated with a
drive train to provide cleaning during power transmission.
If the device is of general utility and not particularly
adapted to be mounted on an operating drive train,
classification is in a class appropriate for cleaning of
general utility such as Class 15 or 134.
(2) Note. If the structure merely provides an opening
through the drive face of a pulley whereby accumulated
foreign matter on the bottom of a belt may pass through the
opening, classification is not herein, but is with appropiate
pulley subcombination structure classified below. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
185 for a pulley having a drive face formed of
circumferentially spaced discrete elements so as to provide
an opening through which foreign matter may pass, and see (2)
Note above.
188 for a pulley having grooves or openings in a cylindrical
drive face, and see (2) Note above.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, 256.5 for a
scraper, wiper, or brush for a moving surface.
198, Conveyors: Power-Driven, 494 for a cleaning device for
a conveyor.
305, Wheel Substitutes for Land Vehicles, 100 for a cleaning
feature.
Subclass:
93
FLUID-IMPELLING MEANS (E.G., FOR COOLING, ETC.):
This subclass is indented under the class definition.
Subject matter wherein significance is attributed to an
auxillary device used in combination with a belt* and pulley*
drive train, or to a particular surface configuration of a
belt or pulley; which auxiliary device or particular surface
configuration is for inducing the flow of a fluid, such as
air, within, through, or around a belt or pulley.
(1) Note. For a patent to be classified herein, the
structure must be for inducing the flow of a fluid such a
with the use of flow-directing vanes. If the structure merely
provides air-escape openings or grooves in a belt or pulley,
classification is in an appropriate belt or pulley
subcombination subclass below. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
185 for a pulley having discrete circumferentially spaced
drive faces, and see (1) Note above.
188 for a pulley having grooves or openings in a
cyclindrical drive face, and see (1) Note above.
249 for a friction drive belt having nondriving grooves or
depressions, and see (1) Note above.
Subclass:
94
RESILIENT CONNECTION BETWEEN PULLEY OR GUIDE-ROLL RIM AND
MOUNT:
This subclass is indented under the class definition.
Subject matter wherein a separate member connects the
circumferential drive face fo a pulley* or guide roll* with
its hub or supporting shaft, said member having an elastic
property permitting limited relative movement between the
pulley drive face and the hub or supporting shaft.
(1) Note. For a patent to be placed herein, the entire
circumference of the rim providing the belt-engaging surface
or surfaces must be connected via the separate resilient
member to the hub or supporting shaft for such limited
relative movement. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
163 for positive drive pulley or guide roll having separate
belt-engaging surfaces mounted for relative movement with
respect to each other during operation.
SEE OR SEARCH CLASS:
464, Rotary Shafts, Gudgeons, Housings, and Flexible
Couplings for Rotary Shafts, 51 for a flexible connection
between a shaft and driven member.
Subclass:
95
HUB FORMED IN SECTIONS AND SEPARABLE BY MOVING SECTIONS
RADIALLY APART (E.G., SPLIT PULLEY TO FACILITATE
INSTALLATION, ETC.):
This subclass is indented under the class definition.
Subject matter wherein means defining an opening for
receiving a drive or support shaft through the center of a
pulley* is formed of discrete parts separable from each other
by movement of said parts radially outward from the
longitudinal axis of the shaft. [figure]
Subclass:
96
And severance lines for separable rim sections diametrically
opposite each other:
This subclass is indented under subclass 95. Subject matter
wherein the pulley* has a belt*-engaging face formed of the
discrete members separable from each other, the belt-engaging
faces of each of the separable members extending 180 degrees
about the circumference of the pulley face. [figure]
Subclass:
97
With spokes connecting hub section and rim section:
This subclass is indented under subclass 96. Subject matter
wherein circumferentially spaced, radially extending arms
interconnect the belt*-engaging members with the
shaft-opening defining parts. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
195 for a friction pulley including spokes connecting the
hub and rim.
Subclass:
98
Plural integral spokes:
This subclass is indented under subclass 97. Subject matter
wherein at least two of the circumferentially spaced arms are
formed as a unitary member, inseparable from each other.
[figure]
Subclass:
99
With discrete means connecting outer ends of integral spokes
to rim:
This subclass is indented under subclass 98. Subject matter
wherein significance is attributed to a separate connector
device which is used to interconnect the radially outermost
ends of the circumferentially spaced arms to the
circumferentially extending belt*- engaging members.
[figure] [figure]
Subclass:
100
AUXILIARY ENDLESS BAND FOR GUIDING BELT OR HOLDING BELT
ENGAGED WITH PULLEY:
This subclass is indented under the class definition.
Subject matter wherein a closed-loop flexible or articulated
member is provided to engage a belt* and cause the belt to
follow an intended path of travel or to press a belt between
the closed-loop member and a pulley* drive face to assure
proper engagement of the belt with the pulley drive face,
said closed-loop member following a different closed-loop
path than said belt, or being separably mounted in engagement
with the exterior surface of the belt.
SEE OR SEARCH THIS CLASS, SUBCLASS:
85 for plural belts, each forming a part of power
transmission path.
248 for a friction drive belt having a link chain embedded
therein a fixedly attached thereto.
Subclass:
101
MEANS FOR ADJUSTING BELT TENSION OR FOR SHIFTING BELT,
PULLEY, OR GUIDE ROLL:
This subclass is indented under the class definition.
Subject matter wherein the significance is attributed to: (a)
a member other than a pulley* engageable with a belt*, and
which is adjustable or relatively movable with respect to the
belt in a direction which causes an increase or decrease in
tensile stress in the belt or a take-up or any undesirable
belt slack to maintain a desirable drive traction between the
belt and pulley drive face; or (b) a device or structure for
providing relative movement between a belt and pulley, to
remove the belt from the pulley, to affect the extent of the
drive traction between the belt and pulley, or to correct any
deviation of the belt from a centered path of travel on the
pulley. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 and 75, for devices for altering belt tension associated
with forward and reverse drives or variable speed drives.
SEE OR SEARCH CLASS:
19, Textiles: Fiber Preparation, 250 for tensioning a fiber
drafting apron.
30, Cutlery, subclass 385 for means to adjust a guide pulley
in a chain saw.
57, Textiles: Spinning, Twisting, and Twining, subclass 105
for a tensioner for a driving band.
83, Cutting, 814 for means to tension an endless band or
chain cutting device.
105, Railway Rolling Stock, 105 for a belt tightener in a
wheel or axle drive.
162, Paper Making and Fiber Liberation, subclass 273 for
means to maintain tension in an endless forming surface.
180, Motor Vehicles, subclass 231 for tensioning a drive
belt for a motor-driven two-wheeled vehicle and subclasses
351, 357, 366, and 373 for belt drives in vehicles that may
include tensioning.
187, Elevator, Industrial Lift Truck, or Stationary Lift for
Vehicle, 264 for means for raising or lowering an elevator
car which includes a car supporting cable and separate means
engaging and maintaining the tension of the cable.
198, Conveyors: Power-Driven, 813 for a tension adjuster
for a conveyor belt; and see a listing of other areas of
search following the definition of Class 198, subclass 813.
211, Supports: Racks, subclass 119.02 for an endless cable
clothesline including supporting and tightening structure.
226, Advancing Material of Indeterminate Length, appropriate
subclasses for a material tensioner associated with such
material handling.
242, Winding, Tensioning, or Guiding, 410 and 147+ for a
tensioning device associated with winding, unwinding, or in
general use for a running length of indefinite-length
material.
248, Supports, 646 for a support for a movable machine
wherein adjustability may provide a belt-tensioning feature.
318, Electricity: Motive Power Systems, 6 for control of
tension in material being driven.
322, Electricity: Single Generator Systems, subclass 43 for
control of belt slippage in a power generating mechanism.
433, Dentistry, subclass 111 for belt tensioner in an
endless belt driving system for a dental apparatus.
451, Abrading, subclass 311 for a tightener for an abrading
band.
Subclass:
102
With sensor for controlling operation of shifter to correct
belt training deviation:
This subclass is indented under subclass 101. Subject matter
provided with auxiliary means which detects deviation of a
belt* from a desired path of travel on a pulley*; and, in
repsonse to such detection, actuates said device for
returning the belt to the desired path of travel. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 6, 80+, 83, and 122+, for other structure involving lateral
shift of a belt such as for reversing the direction of
rotation of a load driving member, for causing a change in
speed ratio, for removing a belt from a pulley or for
correcting belt training deviation.
SEE OR SEARCH CLASS:
162, Paper Making and Fiber Liberation, subclass 257 for
automatic control of transverse movement of an endless band
forming mold.
198, Conveyors: Power-Driven, 806 for automatic control of
conveyor belt training deviation.
226, Advancing Material of Indeterminate Length, 15 for
automatic control of devices to position advancing material
laterally.
Subclass:
103
Shifter driven by electrical or fluid motor:
This subclass is indented under subclass 102. Subject matter
wherein force for actuating said device is derived from or
transmitted via electrical energy or the extertion of force
upon a fluid. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 28, 51, and 110, for other arrangements using an
electrical or fluid motor as a drive for an actuator in a
belt and pulley drive system.
Subclass:
104
Fluid motor:
This subclass is indented under subclass 103. Subject matter
wherein force for actuating said device is derived from or
transmitted via the exertion of force upon a fluid. [figure]
Subclass:
105
Sensor actuates pawl-and-ratchet mechanism to operate
shifter:
This subclass is indented under subclass 102. Subject matter
wherein force for actuating said device is provided via a
pawl-and-ratchet mechanism. [figure] [caption]pawl &
ratchet
Subclass:
106
Sensor includes rotatable belt-engaging surface:
This subclass is indented under subclass 102. Subject matter
wherein the means for detecting belt* deviation includes an
element having a face for contacting the belt* when the belt
has deviated from a desired path of travel, said element
being rotated about its own axis of rotation when contacted
by the moving belt. [figure]
Subclass:
107
Rotatable on same axis as shiftable guide roll or pulley:
This subclass is indented under subclass 106. Subject matter
wherein axis of rotation of the rotatable element is coaxial
with the axis of rotation of a movable guide roll* or
pulley*. [figure]
Subclass:
108
To initiate relative axial movement of belt-engaging surfaces
of guide roll or pulley:
This subclass is indented under subclass 107. Subject matter
wherein the guide roll* or pulley* includes belt*-engaging
faces movable with respect to each other in a direction
parallel to the longitudinal extent of the axis of the guide
roll or pulley, and wherein said rotation of said detector
member causes relative movement of said belt-engaging faces
to return the belt to a central path of travel. [figure]
Subclass:
109
Load responsive tension adjuster or shifter:
This subclass is indented under subclass 101. Subject matter
including means for sensing resistance to movement or change
in resistance to movement of a load device or of a component
in a drive train to drive the load device; and, in response
to such sensed resistance or change of resistance to
movement, said means acts to actuate said member or said
device. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
11 17+, 50, and 70, for other arrangements using a load or
speed responsive actuator in a belt and pulley drive system.
Subclass:
110
Tension adjuster or shifter driven by electrical or fluid
motor:
This subclass is indented under subclass 101. Subject matter
wherein force for actuating said device or said member is
derived from or transmitted via electrical energy or the
exertion of force upon a fluid. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 28, 51, and 103+, for other arrangements using an
electrical or fluid motor as a drive for an actuator in a
belt and pulley drive system.
SEE OR SEARCH CLASS:
83, Cutting, subclass 819 for fluid means to bias a pulley
to tension on endless band or chain cutting device.
Subclass:
111
Tension adjuster has surface in sliding contact with belt:
This subclass is indented under subclass 101. Subject matter
wherein said member has a nonrotatable face portion for
contacting the belt*, whereby the belt slides over the face
portion. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
140 for a belt guide having a surface in sliding contact
with the belt.
Subclass:
112
Pulley or guide roll has eccentric mount for shifting or
tensioning movement:
This subclass is indented under subclass 101. Subject matter
wherein a guide roll* or pulley* is mounted on a support
which is rotatably adjustable about an axis located radially
inwardly of the belt*-engaging drive face of the pulley or
guide roll, the axis of rotation of the pulley or guide roll
being parallel to, but spaced radially from, the axis of
rotation of the adjustable support so that movement of the
support about its axis causes a shift of the axis of rotation
of the pulley or guide roll. [figure]
Subclass:
113
Pulley shifter:
This subclass is indented under subclass 101. Subject matter
wherein said device is operatively associated with a pulley*
for changing the position of the pulley relative to a belt*.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
77 and 79, for devices for shifting a pulley associated with
a variable speed drive.
Subclass:
114
Pulley on shaft of adjustably mounted drive motor:
This subclass is indented under subclass 113. Subject matter
wherein the pulley* is mounted on the drive shaft of a drive
motor, and the motor is movably mounted to change the
position of the pulley. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
26 for an adjustably mounted motor used in connection with a
drive train including a pulley having a belt-receiving groove
formed by drive faces on relatively axially movable coaxial
confronting members.
SEE OR SEARCH CLASS:
105, Railway Rolling Stock, subclass 106 and 107 for an
adjustably mounted motor for a belt tightener in a wheel or
axle drive.
Subclass:
115
Spring biased in belt-tensioning direction:
This subclass is indented under subclass 114. Subject matter
wherein resilient means is provided to bias the drive motor
in a direction tending to increase tensile stress in the
belt*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
117 135, and 138, for other structure wherein a pulley or
guide roll is spring biased in a belt-tensioning direction.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 814 for a
spring-biased tensioner in a conveyor.
Subclass:
116
Pulley is vehicle drive pulley (e.g., bicycle sprocket,
etc.):
This subclass is indented under subclass 113. Subject matter
wherein the pulley* is a part of a drive train for propelling
a vehicle. [figure]
Subclass:
117
Spring biased in belt-tensioning direction:
This subclass is indented under subclass 113. Subject matter
wherein resilient means is provided to bias the pulley* in a
direction tending to increase tensile stress in the belt*.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
115 135, and 138, for other structure wherein a pulley or
guide roll is spring biased in a belt-tensioning direction.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 814 for a
spring-biased tensioner in a conveyor.
Subclass:
118
Pulley shiftable into engagement with exterior of
belt-surface:
This subclass is indented under subclass 113. Subject matter
wherein a inner surface of a belt* defines an area within a
closed loop, and said pulley* is located outside of said area
and has a drive face shiftable into and out of contact with a
surface of the belt opposite the inner surface. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
121 for a device for selectively shifting a belt so that its
exterior surface is engaged or disengaged with a pulley.
139 for structure wherein a pulley is engaged with the
exterior surface of a belt.
Subclass:
119
Belt shifter for shifting belt laterally or for selective
engagement and supported disengagement of belt with pulley:
This subclass is indented under subclass 101. Subject matter
wherein said device or structure is operatively associated
with a belt* so as (a) to move the belt in a direction
generally parallel to the axis of rotation of a pulley* about
which the belt is entrained, or (b) to move the belt into and
out of driving contact with the drive face of a pulley and
support the disengaged belt completely removed from contact
with the pulley face. [figure]
Subclass:
120
Pulley has slot in groove-forming flange facilitating belt
installation or removal:
This subclass is indented under subclass 119. Subject matter
wherein a pulley* face includes opposed surfaces defining a
circumferential belt*-receiving groove, and wherein at least
one of said surfaces has a portion removed therefrom to form
a belt passageway to aid in mounting or removing the belt
into or from the groove. [figure]
Subclass:
121
For shifting exterior surface of belt into engagement with
pulley:
This subclass is indented under subclass 119. Subject matter
wherein an inner surface of the belt* defines an area within
a closed loop, and wherein said device is operatively
associated with the belt to move the belt in a manner to
engage or disengage a surface of the belt opposite the inner
surface with the drive face of a pulley* located outside of
the enclosed area. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
118 for a device for selectively shifting a pulley into and
out of engagement with the exterior surface of a belt.
139 for structure wherein a pulley is engaged with the
exterior surface of a belt.
Subclass:
122
For shifting belt laterally:
This subclass is indented under subclass 119. Subject matter
wherein said device is so operatively associated with the
belt as to move the belt* in a direction generally parallel
to the axis of rotation of a pulley* about which the belt is
entrained. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 6, 80+, 83, and 102+, for other structure involving lateral
shift of a belt such as for reversing the direction of
rotation of a load driving member, for causing a change in
speed ratio, for removing a belt from a pulley or for
correcting belt training deviation.
Subclass:
123
By adjusting axial inclination of belt guide roll:
This subclass is indented under subclass 122. Subject matter
wherein a guide roll* rotatable about its own axis is engaged
with the belt*, and wherein said belt movement is
accomplished by adjusting the angular orientation of the axis
of rotation of the guide roll relative to the path of travel
of the belt. [figure]
Subclass:
124
With idler support having circumferentially spaced rollers to
receive shifted belt:
This subclass is indented under subclass 122. Subject matter
provided with a belt* support axially aligned with a pulley*
to receive a belt* which has been removed from the pulley,
said support including a plurality of members rotatable about
their own axis and radially spaced in arcuate array about a
line forming a continuation of the pulley axis. [figure]
Subclass:
125
Including means for selectively clutching coaxial idler
support to pulley:
This subclass is indented under subclass 122. Subject matter
provided with a belt support axially aligned with a pulley*
to receive a belt* which has been removed from the pulley,
said support being mounted for rotation about an axis forming
a continuation of the pulley axis; and said pulley and
support including surfaces relatively movable between engaged
and disengaged positions to cause the pulley and support to
rotate as a unit when engaged or to permit independent
rotation of the pulley and support when disengaged.
[figure]
Subclass:
126
Shifter actuated by screw or gear drive:
This subclass is indented under subclass 122. Subject matter
wherein motion is transmitted to the device for moving the
belt* via relatively movable components having interengaged
helical threads or intermeshing teeth. [figure]
Subclass:
127
Shifter actuated by flexible cable:
This subclass is indented under subclass 122. Subject matter
wherein motion is transmitted to the device for moving the
belt* via a flexible, elongated ropelike member. [figure]
Subclass:
128
Shifter actuated by handle pivoted about fixed axis:
This subclass is indented under subclass 122. Subject matter
wherein motion is transmitted to the device for moving the
belt* via a lever intended to be grasped by an operator, said
lever being mounted for pivotable movement about a fixed
axis. [figure]
Subclass:
129
And connector link between handle and shifter pivotable about
spaced fixed axis:
This subclass is indented under subclass 128. Subject matter
and further including an additional component interconnecting
said lever with the device for moving the belt*, said
component being mounted for pivotable movement about an axis
spaced from the pivotable axis of the lever. [figure]
Subclass:
130
Portable hand tool for removing or installing belt:
This subclass is indented under subclass 119. Subject matter
wherein said device is to facilitate the application or
removal of the belt* to or from a pulley*, said device being
of a size and nature as to be readily transportable by an
operator to any of several locations where it is desired to
apply or remove a belt from a pulley. [figure]
Subclass:
131
Guide roll forms belt-thickness gap with pulley:
This subclass is indented under subclass 101. Subject matter
wherein said member is a guide roll*, said guide roll being
adjustable or biased to a position where it is spaced from
the drive face of a pulley* a distance no greater than the
thickness of a belt* passing between the guide roll and
pulley to urge the belt into firm driving engagement with the
pulley. [figure]
Subclass:
132
Gravity actuated guide roll for tensioning belt:
This subclass is indented under subclass 101. Subject matter
wherein said member is a guide roll* engaged with the belt*;
and wherein the weight of the guide roll, or the weight of an
auxiliary mass associated with the guide roll, causes the
guide roll to be continually biased in a direction to
increase the tensile stress in the belt or to take up any
undesirable slack in the belt. [figure]
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 815 for a
counterweight actuated tensioner in a conveyor.
Subclass:
133
Guide roll mounted for movement of its axis along arcuate
path to tension belt:
This subclass is indented under subclass 101. Subject matter
wherein said member is a guide roll* engaged with the belt*;
and wherein said guide roll is movably supported for movement
of its axis in a curved path to cause the guide roll change
the tensile stress in the belt or to take up any undesirable
slack in the belt. [figure]
Subclass:
134
Plural guide rolls engaging single belt:
This subclass is indented under subclass 133. Subject matter
wherein an additional guide roll* is engaged with the belt*.
[figure]
Subclass:
135
Guide roll spring biased in belt-tensioning direction:
This subclass is indented under subclass 133. Subject matter
wherein resilient means is provided to bias guideroll *in the
direction tending to increase tensil stress in the belt. *
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
115 117, and 138, for other structure wherein a pulley or
guide roll is spring biased in a belt-tensioning direction.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 814 for a spring
biased tensioner in a conveyor.
Subclass:
136
Guide roll mounted for movement of its axis along rectilinial
path to tension belt:
This subclass is indented under subclass 101. Subject matter
wherein said member is a guide roll * engaged with the belt
*, and whererin said guide roll is moveably supported for
movement of its axis in a straight-line path to cause the
guide roll to change the tensil stress in the belt or to take
up any undesireable slack in the belt. [figure]
Subclass:
137
Plural guide rolls engaging single belt:
This subclass is indented under subclass 136. Subject matter
wherein an additional guide roll* is engaged with the belt*.
[figure]
Subclass:
138
Guide roll spring biased in belt-tensioning direction:
This subclass is indented under subclass 136. Subject matter
wherein resilient means is provided to bias the guide roll*
in a direction tending to increase tensile stress in the
belt*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
115 117, and 135, for other structure wherein a pulley or
guide roll is spring biased in a belt-tensioning direction.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 814 for a
spring-biased tensioner in a conveyor.
Subclass:
139
PULLEY ENGAGES EXTERIOR SURFACE OF BELT:
This subclass is indented under the class definition.
Subject matter wherein an inner surface of a belt* defines an
area within a closed loop; and wherein a pulley* is located
outside of said area and has a drive face in contact with a
surface of the belt opposite the inner surface. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
118 for a device for selectively shifting a pulley into and
out of engagement with the exterior surface of a belt.
121 for a device for selectively shifting a belt so that its
exterior surface is engaged or disengaged with a pulley.
Subclass:
140
BELT GUIDE HAS SURFACE IN SLIDING CONTACT WITH BELT:
This subclass is indented under the class definition.
Subject matter including a member having a nonrotatable face
portion engageable with a belt* for guiding the belt along an
intended path of travel whereby the belt slides over the face
portion of the member. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
111 for a belt tension adjusting device which has a surface
in sliding contact with the belt.
SEE OR SEARCH CLASS:
226, Advancing Material of Indeterminate Length, may include
a nominal recitation of a supply or take-up coil (e.g., less
than a support for such a coil or a cooperative relationship
between a tension or exhaust detector and reel driving or
reel stopping means, etc.), subclass 196.1 for a passive
guide combined with a material feeder.
242, Winding, Tensioning, or Guiding, 615 for a residual
guide or guard that directs elongated flexible material that
may be combined with more than nominal winding structure.
Subclass:
141
PULLEY HAVING CIRCUMFERENTIALLY SPACED PORTIONS OF DRIVE FACE
SPACED UNEQUAL DISTANCES FROM PULLEY AXIS OF ROTATION (E.G.,
ELLIPTICAL PULLEY, ETC.):
This subclass is indented under the class definition.
Subject matter wherein a first distance between the axis of
rotation of a pulley* and a first point on the pulley where a
belt* is drivingly engaged is less than a second distance
between the axis of the pulley and a second circumferentially
spaced point on the pulley periphery where the belt is
drivingly engaged. [figure]
Subclass:
142
MAGNETIC ATTRACTION BETWEEN BELT AND PULLEY:
This subclass is indented under the class definition.
Subject matter wherein the engagement between the pulley* and
belt* is enhanced by magnetic force. [figure]
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 805 for a conveyor
belt moved by a magnetic force.
Subclass:
143
FABRIC DRIVE FACE ON BELT AND PULLEY:
This subclass is indented under the class definition.
Subject matter wherein interengaging faces on a belt* and a
pulley* are each of a material from interlaced or felted
strands or fibers. [figure]
Subclass:
144
GUARD OR HOUSING FOR BELT OR PULLEY:
This subclass is indented under the class definition.
Subject matter wherein a shield is associated with a belt* or
pulley* to prevent injury or inadvertent contact with the
belt or pulley or to protect the driven train from
introduction of foreign matter. [figure]
SEE OR SEARCH CLASS:
30, Cutlery, subclass 382 for guard means for a chain saw.
74, Machine Element or Mechanism, 606 and 608+ for gear
casings and guards.
83, Cutting, 397, 478, 544+, and 814+ for guards associated
with a cutting device.
Subclass:
145
Connected to belt:
This subclass is indented under subclass 144. Subject matter
wherein the shield is attached to a belt* for movement
therewith. [figure]
Subclass:
146
Extending along entire length of belt run:
This subclass is indented under subclass 144. Subject matter
wherein the shield has a longitudinal extent at least
approximating the distance between a point where a belt*
leaves a driving pulley* and a point where a belt engages a
driven pulley. [figure]
Subclass:
147
Individual tubular housings for opposite belt runs:
This subclass is indented under subclass 146. Subject matter
wherein the shield comprises separate ductlike members, one
of said ductlike members enclosing a belt* between a point
where the belt leaves a driving pulley* and a point where the
belt engages a driven pulley, and the other of said ductlike
members enclosing the belt between a point where the belt
leaves the driven pulley and a point where the belt engages
the driving pulley. [figure]
Subclass:
148
SYSTEM INCLUDING SPACED PULLEYS INTERCONNECTED BY A BELT:
This subclass is indented under the class definition.
Subject matter including a driving pulley*, a driven pulley
and a belt* engaged with the driving and driven pulleys,
whereby rotational power is transmitted from the driving to
the driven pulley via the belt. [figure]
Subclass:
149
Positive drive pulley and friction drive pulley connected by
same belt:
This subclass is indented under subclass 148. Subject matter
wherein one of said pulleys* has a drive face formed by
circumferentially spaced, radially extending teeth or ridges
for driving engagement with radially extending surfaces
correspondingly spaced along the length of the belt*, and the
other of said pulleys has a drive face including a surface
for driving engagement with the same belt by frictional
contact with the belt. [figure]
Subclass:
150
With frame or mount for system:
This subclass is indented under subclass 148. Subject matter
wherein significance is attributed to means by which the
pulleys* and belt* are supported. [figure]
Subclass:
151
AUXILIARY MEMBER REMOVABLY ATTACHED TO PULLEY OR GUIDE ROLL
FOR PREVENTING LATERAL DISPLACEMENT OF BELT:
This subclass is indented under the class definition.
Subject matter wherein a device is provided for detachable
mounting on a pulley* or guide roll* facilitating placement
of a belt* on the pulley or guide roll when the device is
detached and for preventing lateral displacement of the belt
on the pulley or guide roll when the device is mounted on the
pulley or guide roll. [figure]
Subclass:
152
POSITIVE DRIVE PULLEY OR GUIDE ROLL:
This subclass is indented under the class definition.
Subject matter wherein a pulley or guide roll structure
include a belt*-engaging drive face formed by
circumferentially spaced, radially extending teeth or ridges
intended for driving engagement with radially extending
surfaces correspondingly spaced along the length of a belt.
[figure]
SEE OR SEARCH CLASS:
30, Cutlery, 384 for a guide pulley in a chain saw.
198, Conveyors: Power-Driven, subclass 834 for a positive
drive pulley for a conveyor.
226, Advancing Material of Indeterminate Length, 52, and
particularly subclasses 76+ for a rotating sprocket wheel to
advance material.
Subclass:
153
With particular belt:
This subclass is indented under subclass 152. Subject matter
also including structure of a belt* engageable with the
pulley*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
202 for positive drive belt, per se.
Subclass:
154
Belt has spherical or hemispherical drive faces:
This subclass is indented under subclass 153. Subject matter
wherein spaced surfaces along the length of the belt* have an
approximate shape of a ball or a hemisphere, said surfaces
being received in corresponding recesses defined by the
pulley* or guide roll* ridges for driving engagement between
the ridges and said surfaces. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
203 for a belt, per se, having spherical or hemispherical
drive faces.
Subclass:
155
Belt formed of rigid links:
This subclass is indented under subclass 153. Subject matter
wherein the belt* is formed of inflexible components which
are joined together to permit relative movement of the
components so that the belt is capable of conforming to
circumferential curvature of a pulley* or guide roll* drive
face. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
206 for a positive drive belt formed of rigid links.
Subclass:
156
With sequential links pivoted about discrete pivot pin:
This subclass is indented under subclass 155. Subject matter
wherein a separate rodlike member is inserted through aligned
openings in contiguous ends of adjacent inflexible
components, the longitudinal axis of said rodlike member
providing a pivotable axis permitting relative movement of
the inflexible components. [figure]
Subclass:
157
And each link has integral surfaces forming inwardly opening
groove:
This subclass is indented under subclass 156. Subject matter
wherein each of the inflexible components is a unitary member
having side walls spaced from each other in the direction of
the longitudinal extent of the belt*, said side walls being
interconnected by a top wall to define a cavity opening
inwardly toward the drive face of the pulley* or guide roll*
to receive a pulley or guide roll ridge or tooth. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
212 for a belt, per se, having integral surfaces forming an
inwardly opening groove.
Subclass:
158
And additional coaxial surface for engaging same belt in
shifted condition or for engaging auxiliary belt, brake, or
clutch member:
This subclass is indented under subclass 152. Subject matter
wherein, in addition to the belt*-engaging drive face on the
pulley* or guide roll*, an additional operative face is
provided, said additional operative face either being formed
integral with the pulley or guide roll or on a separate
member mounted coaxially with the pulley or guide roll, said
additional operative face operating either: (a) to receive a
belt which has been shifted from the pulley or guide roll
drive face; or (b) to receive an additional belt; or (c) to
receive a member intended to impede rotation of the pulley or
guide roll; or (d) to receive a member for selectively or
intermittently engaging or disengaging the pulley or guide
roll with another device during operation of the pulley.
[figure]
Subclass:
159
Coaxial surface is belt-engaging surface on friction drive
pulley:
This subclass is indented under subclass 158. Subject matter
wherein the additional operative face is a belt*-engaging
face of a pulley for driving a belt by frictional contact
between the belt and the drive face. [figure]
Subclass:
160
Coaxial surface is belt-engaging surface on positive drive
pulley of different circumference:
This subclass is indented under subclass 158. Subject matter
wherein the additional operative face is a belt*-engaging
face of a second pulley* of the same kind, and wherein the
distance from the axis of rotation to the drive face of one
of the pulleys is different than the distance from the axis
of rotation to the drive face of the other of the pulleys.
[figure]
Subclass:
161
Having nonmetallic component:
This subclass is indented under subclass 152. Subject matter
wherein the structure of the pulley* or guide roll* includes
a part which is formed from material other than metal.
[figure]
Subclass:
162
Having belt-engaging surfaces on discrete circumferentially
spaced, relatively movable or replaceable members:
This subclass is indented under subclass 152. Subject matter
wherein the belt*-engaging drive face of the pulley* or guide
roll*, is formed of separate components spaced
circumferentially from each other about the perimeter of the
pulley or guide roll, said components being mounted for
relative motion or being so mounted as to facilitate separate
individual removal and installation of the components.
[figure]
Subclass:
163
Movable with respect to each other during operation:
This subclass is indented under subclass 162. Subject matter
wherein the components are mounted for relative motion with
respect to each other while the pulley* or guide roll* is in
driving engagement with a belt*. [figure]
SEE OR SEARCH CLASS:
226, Advancing Material of Indeterminate Length, 62 for a
reciprocating or oscillating claw or finger associated with a
device for advancing material.
Subclass:
164
Having axially spaced sets of belt-engaging surfaces:
This subclass is indented under subclass 152. Subject matter
wherein the drive face of the pulley* or guide roll* includes
plural sets of circumferentially spaced, radially extending
teeth or ridges intended for concurrent engagement with a
common belt*, one of said sets being spaced from the other in
a direction parallel to the longitudinal extent of the axis
of rotation or the pulley or guide roll. [figure]
Subclass:
165
With stationary support for pulley or guide roll:
This subclass is indented under subclass 152. Subject matter
wherein significance is attributed to stationary mounting
means for the pulley* or guide roll*. [figure]
Subclass:
166
FRICTION DRIVE PULLEY OR GUIDE ROLL:
This subclass is indented under the class definition.
Subject matter wherein pulley* or guide roll* structure
includes a drive surface or drive surfaces for driving
engagement with a belt* by frictional contact with the belt.
[figure]
SEE OR SEARCH CLASS:
16, Miscellaneous Hardware, 210 for a sash cord guide.
30, Cutlery, 384 for a guide pulley in a chain saw.
191, Electricity: Transmission to Vehicles, 63 for a
trolley wheel head mounted for rolling contact with a
conductor.
198, Conveyors: Power-Driven, subclass 835 and 842+ for a
friction drive pulley or guide roll for a conveyor belt.
226, Advancing Material of Indeterminate Length, 168 for
orbitally traveling material-engaging surface to advance
material.
242, Winding, Tensioning, or Guiding, 600 and 118+ for a
winding drum or spool.
254, Implements or Apparatus for Applying a Pushing or
Pulling Force, 264 for a driving device which contacts and
pulls on a cable; and subclasses 389+ for a device or member
for contacting and guiding a moving cable.
492, Roll or Roller, for a roll, per se, not elsewhere
provided for, and see the search notes thereunder.
Subclass:
167
With particular belt:
This subclass is indented under subclass 166. Subject matter
also including structure of a belt* engageable with the
pulley* or guide roll. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
237 for a friction drive belt, per se.
Subclass:
168
Including plural, coaxial, circumferential belt-receiving
grooves:
This subclass is indented under subclass 166. Subject matter
wherein two or more pairs of belt*-engaging surfaces are
provided for rotation about a common axis, each of said pairs
including circumferentially extending surfaces facing each
other in an axial direction to drivingly engage a belt
received in the space defined by such surfaces.
(1) Note. A pair or belt-engaging surfaces as defined above
may be separate surfaces on distinct members or may be
radially extending surface portions of a common surface.
[figure]
Subclass:
169
Plural grooves of different circumferences:
This subclass is indented under subclass 168. Subject matter
wherein the distance from the axis of rotation to a radially
innermost point where a belt* engages one pair of surfaces is
different than the distance from the axis of rotation to a
radially innermost point where a belt engages another of the
pairs of surfaces. [figure]
Subclass:
170
Plural grooves formed in unitary member:
This subclass is indented under subclass 168. Subject matter
wherein at least four of the surfaces forming two pairs of
belt*-engaging surfaces are all integral parts of a common
member. [figure]
Subclass:
171
And additional coaxial surface for engaging same belt in
shifted condition or for engaging auxiliary belt, brake, or
clutch member:
This subclass is indented under subclass 166. Subject matter
wherein, in addition to the belt*-engaging drive surface or
drive surfaces on the pulley*, and additional operative face
is provided, said additional operative face either being
formed integral with the pulley or on a separate member
mounted coaxially with the pulley, said additional operative
face operating either: (a) to receive a belt which has been
shifted from the pulley drive surface or surfaces, or (b) to
receive an additional belt; or (c) to receive a member
intended to impede rotation of the pulley; or (d) to receive
a member for selectively or intermittently engaging or
disengaging the pulley with another device during operation
of the pulley. [figure]
Subclass:
172
Guide roll on axis perpendicular to top surface of belt for
engaging side edge of belt:
This subclass is indented under subclass 166. Subject matter
wherein a guide roll* is mounted for rotation about an axis
extending at an angle of substantially ninety degrees to the
plane of the outer surface of a belt*, said guide roll being
positioned to contact a side edge of the belt. [figure]
Subclass:
173
And additional guide roll for engaging top or bottom surface
of belt:
This subclass is indented under subclass 172. Subject matter
wherein another guide roll* is mounted in position to contact
one of the surfaces extending between opposite side edges of
the belt*. [figure]
Subclass:
174
Pulley or guide roll including circumferential belt-receiving
groove:
This subclass is indented under subclass 166. Subject matter
wherein a pair of belt*-engaging surfaces are provided for
rotation about a common axis, said pair including
circumferentially extending surfaces facing each other in an
axial direction to drivingly engage a belt received in the
space defined by such surfaces.
(1) Note. A pair of belt-engaging surfaces, as defined
above, may be separate surfaces on distinct members or may be
radially extending surface portions of a common surface.
[figure]
Subclass:
175
Groove formed by rugate or circumferen- tially spaced drive
surfaces:
This subclass is indented under subclass 174. Subject matter
wherein surfaces defining the belt*-receiving space are on
separate components circumferentially spaced from each other,
or wherein at least one of the surfaces defining the belt
receiving spaces is roughened or includes alternating ridges
and valleys to increase the extent of frictional grip on the
belt. [figure]
Subclass:
176
Groove formed by multiple, abutting, circumferentially
connected members:
This subclass is indented under subclass 174. Subject matter
wherein surfaces defining the belt*-receiving space are on
separate components arranged circumferentially in sequence,
and adjacent components abuting each other along a plane
extending radially from the axis of rotation of the pulley*
or guide roll*. [figure]
Subclass:
177
And circumferentially continuous belt-engaging layer or
insert of diverse material added on or between groove-forming
flanges:
This subclass is indented under subclass 174. Subject matter
wherein a component which has been shaped or arranged to
provide the belt*-receiving space includes an added coating
on the component or an additional member inserted into the
belt-receiving space, said coating or additional member being
formed of a material different from the material from which
the component is formed, and said added coating or additional
member being for drivingly engaging the belt and extending
uninterruptedly around the circumference of the pulley* or
guide roll*. [figure]
SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, subclass 36 for a
coating or plastic composition to enhance friction grip.
Subclass:
178
Layer or insert of resilient material:
This subclass is indented under subclass 177. Subject matter
wherein the coating or additional member is formed of a
material having an elastic property. [figure]
Subclass:
179
Including connected discrete axially spaced groove-forming
flanges:
This subclass is indented under subclass 174. Subject matter
wherein separate interconnected members have outer peripheral
portions spaced axially apart and facing each other to
provide the belt*-engaging surfaces. [figure]
Subclass:
180
Connected via nesting cylindrical or conical surfaces
integral with the flanges:
This subclass is indented under subclass 179. Subject matter
wherein the separate members each has a conical or
cylindrical portion formed integral with, and spaced radially
inwardly from, the outer peripheral portion, the conical or
cylindrical portion of one of the members being received
within the conical or cylindrical portion of the other of the
members. [figure]
Subclass:
181
And abutting radial surfaces integral with the flanges:
This subclass is indented under subclass 179. Subject matter
wherein the separate members each has a planar face formed
integral with, and extending radially inwardly from, the
outer peripherical portion, the planar face of one of the
members being mounted in abutting relationship with the
planar face of the other of the members.
[figure]
Subclass:
182
Including connector extending through opening in abutting
surfaces:
This subclass is indented under subclass 181. Subject matter
wherein the separate members are interconnected by a
connector device which extends through an opening in one or
both of the abutting planar faces of the members.
[figure]
Subclass:
183
Connector comprises tang integral with one of the surfaces:
Subject matter under subclass l82 wherein the connector
device comprises a tongue-like part formed integral with one
of the planar faces and received into an opening in the other
of the planar faces. [figure]
Subclass:
184
Pulley or guide roll having plural, discrete belt-engaging
faces for engaging flat belt:
This subclass is indented under subclass 166. Subject matter
wherein a belt*-engaging surface is provided on each of
separate members, the belt-engaging surfaces being so
arranged as to provide a composite structure for intended
engagement with a belt having a planar inwardly facing drive
face. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
95 for a pulley having discrete rim sections and wherein a
hub portion is also formed in sections movable radially apart
from each other.
Subclass:
185
Circumferentially spaced faces:
Subject matter under subclass l84 wherein the belt*-engaging
surfaces are spaced from each other in a direction extending
circumferentially about the axis of rotation of the pulley*
or guide roll. [figure]
Subclass:
186
And axially spaced faces:
This subclass is indented under subclass 185. Subject matter
wherein belt*-engaging surfaces are also spaced from each
other in a direction parallel to the longitudinal extent of
the axis of rotation of the pulley* or guide roll*.
[figure]
Subclass:
187
Each face has continuous circumferential periphery:
This subclass is indented under subclass 184. Subject matter
wherein the belt*-engaging surface of each of the members
extends for 360 degrees circumferentially about the axis of
rotation of the pulley* or guide roll*. [figure]
Subclass:
188
Including grooves or openings in cylindrical belt-engaging
surface (e.g., for escape of air, etc.):
This subclass is indented under subclass 166. Subject matter
wherein the drive surface is on a generally cylindrical
unitary member, and wherein said drive surface has apertures
or grooves formed therein and arranged in a pattern extending
about the entire periphery of the member. [figure]
Subclass:
189
Circumferentially extending grooves:
This subclass is indented under subclass 188. Subject matter
wherein grooves in said drive surface extend for at least 360
degrees circumferentially about the axis of rotation of the
pulley* or guide roll*. [figure]
Subclass:
190
Including nonmetallic belt-engaging surface portion:
This subclass is indented under subclass 166. Subject matter
wherein the surface intended for driving engagement with the
belt* includes a material other than metal. [figure]
SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, subclass 36 for a
coating or plastic composition to enhance friction grip.
Subclass:
191
Rubber:
This subclass is indented under subclass 190. Subject matter
wherein the surface intended for driving engagement with the
belt* is formed of rubber. [figure]
Subclass:
192
With embedded metal layer:
This subclass is indented under subclass 191. Subject matter
wherein a component made of rubber which provides the driving
surface has an additional metallic component embedded
therein. [figure]
Subclass:
193
Leather:
This subclass is indented under subclass 190. Subject matter
wherein the surface intended for driving engagement with the
belt* is formed of leather. [figure]
Subclass:
194
Wood or paper:
This subclass is indented under subclass 190. Subject matter
wherein the surface intended for driving engagement with the
belt* is formed of wood or paper. [figure]
Subclass:
195
With spokes connecting rim to hub:
This subclass is indented under subclass 166. Subject matter
wherein a set of circumferentially spaced, radially extending
arms extend between and interconnect a component providing
the belt*-engaging surface with component providing the means
by which the pulley* or guide roll* is mounted on a drive or
support shaft.
SEE OR SEARCH THIS CLASS, SUBCLASS:
97 for a pulley including spokes connecting the hub and rim,
and wherein the hub is formed in sections movable radially
apart from each other. [figure]
Subclass:
196
Plural spoke sets axially spaced:
This subclass is indented under subclass 195. Subject matter
including an additional set of circumferentially spaced,
radially extending arms which extend between and interconnect
a component providing the belt*-engaging surface with a
component providing the means by which the pulley* or guide
roll* is mounted on a drive or support shaft, the two sets of
arms being spaced from each other in a direction parallel to
the longitudinal extent of the axis of rotation of the pulley
or guide roll. [figure]
Subclass:
197
Cylindrical rim interconnected to axially spaced support
members:
This subclass is indented under subclass 166. Subject matter
wherein a component has a belt*-engaging surface which is
generally cylindrical in shape, and wherein a pair of
separate members are provided with aligned openings for
receiving a drive or support shaft for the pulley* or guide
roll*, said members including radially extending surfaces
spaced from each other in a direction parallel to the
longitudinal extent of the shaft axis, and said members being
rigidly connected to said component to mount said component
in radially spaced relation from said shaft.
[figure]
Subclass:
198
With stationary support for pulley or guide roll:
This subclass is indented under subclass 166. Subject matter
including the structure of a member which is immobile during
operation of the pulley* or guide roll*, and which serves to
mount the pulley or guide roll in desired position for
engaging the belt*. [figure]
Subclass:
199
And ball or roller bearing for mounting pulley or guide roll
on support:
This subclass is indented under subclass 198. Subject matter
wherein an antifriction device having balls or rollers is
interposed between the pulley* or guide roll* and the
mounting member. [figure]
SEE OR SEARCH CLASS:
384, Bearings, appropriate subclasses for bearing or guide
structure, per se.
Subclass:
200
MOBIOUS BELT:
This subclass is indented under the class definition.
Subject matter wherein a belt* has a one-sided
pulley*-engaging surface formed by holding a first end of an
elongated band fixed, rotating the opposite end l80 degrees
about an axis coincident with a centerline of the elongated
band parallel to the long dimension thereof, and securing the
opposite end to the first end. [figure]
SEE OR SEARCH CLASS:
400, Typewriting Machines, subclass 195 for a mobius strip
typewritter ribbon, and see (1) Note therein for an
explanation of mobius.
Subclass:
201
BELT HAVING DRIVE SURFACES ON OPPOSITE SIDE EDGES OF STACKED
PLATES HAVING PLANAR FACES PERPENDICULAR TO DIRECTION OF BELT
MOVEMENT:
This subclass is indented under the class definition.
Subject matter wherein a belt* is formed of a plurality of
flat bodies; each of said bodies including narrow top, bottom
and side edges defining oppositely facing planar surfaces
with planar surfaces of adjacent bodies abutting each other,
said side edges being arranged for intended engagement with
facing surfaces defining a circumferentially extending groove
in a pulley*. [figure]
Subclass:
202
POSITIVE DRIVE BELT:
This subclass is indented under the class definition.
Subject matter wherein belt* structure includes means
defining distinct pulley*-engaging surfaces spaced along the
length of the belt for intended driving engagement of such
surfaces sequentially with radially extending teeth or ridges
of the pulley correspondingly spaced about the circumference
of the pulley. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
153 for a positive drive belt combined with a pulley.
SEE OR SEARCH CLASS:
30, Cutlery, subclass 380 and 381+ for a band or chain saw.
83, Cutting, 788 for an endless band or chain cutting
device.
185, Motors: Spring, Weight, and Animal Powered, subclass 16
for a belt intended to be driven by an animal treading on
the belt.
198, Conveyors: Power-Driven, 844.1 for conveyor belt
structure.
305, Wheel Substitutes for Land Vehicles, 157 and 185+ for a
track or tread.
451, Abrading, 296 for an abrading tool comprising an
endless band.
Subclass:
203
Drive surfaces on belt formed by spherical or hemispherical
elements:
This subclass is indented under subclass 202. Subject matter
wherein the pulley*-engaging surfaces on the belt have an
approximate shape of a ball or hemisphere. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
154 for a belt having spherical or hemispherical elements
combined with a pulley.
Subclass:
204
Drive surfaces on belt formed or interconnected by continuous
flexible member:
This subclass is indented under subclass 202. Subject matter
wherein the pulley*-engaging surfaces are formed as an
integral part of, or interconnected by, a unitary band which
extends the entire length to the belt*, said band being
formed of a pliant material to permit the band to conform to
the circumferential curvature of the pulley*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
249 for a friction drive belt having grooves or openings
therein such as for escape of air, flexibility, etc.
Subclass:
205
Drive surfaces on longitudinally spaced teeth formed integral
with flexible member:
This subclass is indented under subclass 204. Subject matter
wherein alternating ridges and grooves are formed along the
length of said band as an integral part thereof, said ridges
providing said pulley*-engaging surfaces. [figure]
Subclass:
206
Belt formed of rigid links:
This subclass is indented under subclass 202. Subject matter
wherein the belt* is formed of inflexible components which
are joined together to permit relative movement of the
components so that the belt is capable of conforming to
curvature of a pulley* drive face. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
155 for a belt formed of rigid links combined with a
positive drive pulley.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, 850 for a conveyor belt
formed of rigid links.
Subclass:
207
Including nonmetallic part:
This subclass is indented under subclass 206. Subject matter
wherein the belt* includes a part formed of a material other
than metal. [figure] [caption]synthetic plastic
material
Subclass:
208
Including wire member coiled about pivotal axis between
links:
This subclass is indented under subclass 206. Subject matter
including a part in the form of a thin strand helically wound
about a transverse pivotal axis between longitudinally
connected components forming the belt*. [figure]
Subclass:
209
Including ball or roller bearing circumferentially spaced
about pivotal axis between links:
This subclass is indented under subclass 206. Subject matter
wherein a plurality of friction-reducing members in the form
of balls or rollers are space circumferentially about the
axis where longitudinally connected components are pivotally
attached to each other. [figure] [caption]roller bearing
Subclass:
210
Links pivotable about diverse axes during operation (e.g.,
"universal" connection facilitating alignment with sprockets
in diverse planes):
This subclass is indented under subclass 206. Subject matter
wherein significance is attributed to a manner of
interconnecting components to permit relative movement about
more than one axis. [figure] [figure]
Subclass:
211
Ball-and-socket connection:
This subclass is indented under subclass 210. Subject matter
wherein a component is provided with a part having a
spherical or hemispherical surface received in a
correspondingly shaped recess in an adjacent component to
permit relative movement through nonparallel planes.
Subclass:
212
Link including integral surface forming inwardly opening
groove (e.g., silent chain, etc.):
This subclass is indented under subclass 206. Subject matter
wherein each of the inflexible components is a unitary member
having side walls spaced from each other in the direction of
the longitudinal extent of the belt*, said side walls being
interconnected by a wall to define a cavity opening toward
the drive face of the pulley* for receiving a pulley ridge or
tooth. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
157 for a belt of this kind combined with a positive drive
pulley.
Subclass:
213
Plural links having laterally aligned groove-forming
surfaces:
This subclass is indented under subclass 212. Subject matter
wherein at least two of said components with said inwardly
opening cavities are arranged with the surfaces defining the
top and sidewalls aligned with each other in a direction
traverse to the longitudinal extent of the belt*.
[figure]
Subclass:
214
Connector or bearing member extending through or positioned
in laterally aligned openings in adjacent links is
noncircular in traverse cross section:
This subclass is indented under subclass 213. Subject matter
wherein adjacent components are each provided with an
opening, the openings being aligned with each other in a
direction traverse to the longitudinal extent of the belt*
for receiving a separate connector or bearing member
extending longitudinally through or positioned in the aligned
openings, and said connection or bearing member having an
external surface which is noncircular in a cross section
taken on a plane traverse to the longitudinal extent of the
connector or bearing member. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
229 for a connector for a belt of the kind provided in
subclass 228, and wherein the connector is noncircular in
traverse cross section.
Subclass:
215
Multiple connector or bearing members extend through or
positioned in common opening:
This subclass is indented under subclass 214. Subject matter
wherein a plurality of separate connector or bearing members
are arranged within a single opening. [figure]
Subclass:
216
Concave surface of one connector or bearing member abuts
convex surface of another connector or bearing member:
This subclass is indented under subclass 215. Subject matter
wherein one of said connector or bearing members has an
inwardly curving surface which abuts an outwardly curving
surface connector or bearing member. [figure]
Subclass:
217
Plural connector or bearing members with concave surface abut
covex surface or surfaces on another connector or bearing
member:
This subclass is indented under subclass 216. Subject matter
wherein two of said connector or bearing members have an
inwardly curving surface which abuts an outwardly curving
surface or surfaces on another connector or bearing member.
[figure]
Subclass:
218
Including diverse member for interconnecting opposite ends to
complete loop (e.g., repair link for broken chain, etc.):
This subclass is indented under subclass 206. Subject matter
wherein a device is provided for interconnecting opposite
ends of a plurality of sequentially longitudinally connected
components to form a belt*, said device being different in
structure than said components, and different in structure
than other means interconnecting sequential components
through the extent of the belt. [figure]
SEE OR SEARCH CLASS:
24, Buckles, Buttons, Clasps, etc., 31 for a belt connector,
per se.
Subclass:
219
Including separate locking member for retaining
link-connector in laterally aligned openings through adjacent
links:
This subclass is indented under subclass 206. Subject matter
wherein a retainer device is separably fastened to a
laterally extending connector member for preventing
inadvertent withdrawal of the connector member from a
position within openings in longitudinally adjacent
components, the openings being aligned in a lateral direction
perpendicular to the longitudinal extent of the belt*.
[figure]
Subclass:
220
Common locking member retains longitudinally spaced
connectors:
This subclass is indented under subclass 219. Subject matter
wherein a single retaining device is fastened to at least two
connector members spaced from each other in a direction
parallel to the longitudinal extent of the belt*.
[figure]
Subclass:
221
Strandlike locking member (e.g., wire, etc.):
This subclass is indented under subclass 220. Subject matter
wherein the retaining device is in the form of a thin strand.
[figure]
Subclass:
222
Threaded connection between connector and locking member:
This subclass is indented under subclass 219. Subject matter
wherein the retaining device includes a surface with a
helically extending ridge which cooperates with a
corresponding helically extending ridge on the connector
member. [figure]
Subclass:
223
Locking member received in annular groove extending entirely
around circumference of connector:
This subclass is indented under subclass 219. Subject matter
wherein the connector member has an outer surface provided
with a groove extending 360 degrees about the longitudinal
axis of the connector, and wherein said retaining device is
received within said groove.
[figure]
Subclass:
224
Locking member includes portion disposed within opening which
receives connector:
This subclass is indented under subclass 219. Subject matter
wherein at least a portion of a surface on the retaining
device extends within walls defining the opening or openings
which receive the connector member. [figure]
Subclass:
225
Locking member extends through all aligned openings:
This subclass is indented under subclass 224. Subject matter
wherein the retaining device extends substantially the entire
length of a passageway defined by the aligned openings.
[figure]
Subclass:
226
Link including discrete members forming laterally spaced
sides of opening for pulley tooth:
This subclass is indented under subclass 206. Subject matter
wherein a pulley*-tooth-receiving component is formed of
separate parts spaced from each other in a direction
transverse to the longitudinal extent of the belt* to define
opposite sides of an opening intended to receive the tooth of
the pulley. [figure]
Subclass:
227
With particular structure facilitating disassembly of
adjacent links:
This subclass is indented under subclass 226. Subject matter
wherein significance is attributed to structure which
facilitates dismantling sequentially arranged components from
each other. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
219 for structure including sequential links interconnected
by a separate connector pin, and wherein a separate locking
member, which may be removable, is provided to retain the
connector pin in place.
Subclass:
228
With discrete connector extending through laterally aligned
apertures in adjacent links:
This subclass is indented under subclass 226. Subject matter
wherein components forming the belt* each include means
defining an aperture or apertures therein, the axis of said
aperture or apertures being a line extending transversely
perpendicular to the longitudinal extent of the belt, the
aperture or apertures in one component being axially aligned
with the aperture or apertures in an adjacent component, and
said belt further including a separate connector member
extending through the aligned apertures to interconnect
adjacent components. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
234 for a belt having links wherein opposite sides of an
opening for a pulley tooth are formed as a unitary member,
and having adjacent links interconnected by a connector pin
or the like.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, 851 for a conveyor link with
a pin connecting adjacent links.
Subclass:
229
Connector has bearing surface which is noncircular in
transverse cross section:
This subclass is indented under subclass 228. Subject matter
wherein said connector member has an external surface which
is noncircular in a cross section taken on a plane transverse
to the longitudinal extent of the connector member, said
external surface being arranged for relative oscillatory
movement on a face of another member during operation of the
belt. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
214 for a connector for a belt of the kind provided in
subclass 213, and wherein the connector is noncircular in
transverse cross section.
Subclass:
230
Connector connects sequential links each having discrete
members forming laterally spaced sides:
This subclass is indented under subclass 228. Subject matter
wherein sequential components are each formed of separate
parts spaced from each other in a direction transverse to the
longitudinal extent of the belt* to define an opening
intended to receive the tooth of a pulley*, and wherein said
connector member extends through axially aligned apertures in
both of said sequential components to interconnect the
components. [figure]
Subclass:
231
With sleeve rotatable with respect to each link for engaging
pulley tooth:
This subclass is indented under subclass 230. Subject matter
wherein a generally cylindrical member is positioned
coaxially with and around said connector member, said
cylindrical member being relatively movable with respect to
each of said components to provide a surface for engaging the
tooth of a pulley*. [figure]
Subclass:
232
Link including common member forming laterally spaced sides
of opening for pulley tooth:
This subclass is indented under subclass 206. Subject matter
wherein a pulley*-tooth-receiving component includes surface
portions facing each other in a direction transverse to the
longitudinal extent of the belt* to provide opposite sides of
a pulley-tooth-receiving opening, said surface portions being
formed as integral parts of a unitary member.
[figure]
Subclass:
233
With discrete member interconnecting sequential
pulley-tooth-receiving links:
This subclass is indented under subclass 232. Subject matter
wherein a separately attached connector member is used to
connect sequential components having openings for receiving a
pulley* tooth. [figure]
Subclass:
234
Connector member inserted through lateral opening in
pulley-tooth-receiving links:
This subclass is indented under subclass 233. Subject matter
wherein a component having a pulley*-tooth-receiving opening
is provided with an aperture extending through the component
in a direction transverse to the longitudinal extent of the
belt, and said connector member being received in said
aperture. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
228 for a belt having links formed of discrete side members
forming an opening for a pulley tooth, and having adjacent
links interconnected by a connector pin or the like.
Subclass:
235
Common member surrounds opening for pulley tooth on all
sides:
This subclass is indented under subclass 232. Subject matter
wherein surface portions of a unitary member form an opening
intended to completely surround the tooth of a pulley*.
[figure]
Subclass:
236
Member formed of sheet metal:
This subclass is indented under subclass 235. Subject matter
wherein the member is constructed from a web or sheet of
metal having a relatively thin uniform dimension between
relatively broad planar faces. [figure]
Subclass:
237
FRICTION DRIVE BELT:
This subclass is indented under the class definition.
Subject matter wherein belt structure includes a drive
surface or drive surfaces for driving engagement with a
pulley* by frictional contact with the pulley. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
167 for a friction drive belt in combination with a friction
drive pulley or guide roll.
SEE OR SEARCH CLASS:
19, Textiles: Fiber Preparation, 244 for a fiber drafting
apron in the form of an endless band.
30, Cutlery, subclass 380 and 381+ for a band or chain saw.
57, Textiles: Spinning, Twisting, and Twining, subclass 201
for an endless band formed by a spinning, twisting, or
twining operation.
83, Cutting, 788 for an endless band or chain cutting
device.
185, Motors: Spring, Weight, and Animal Powered, subclass 16
for a belt intended to be driven by an animal treading
thereon.
198, Conveyors: Power-Driven, 844.1 for a conveyor belt
structure.
451, Abrading, 296 for an abrading tool comprising an
endless band.
Subclass:
238
Including plural interconnected and transversely spaced pairs
of oppositely facing side-drive surfaces (e.g., plural
"V-belts", etc.):
This subclass is indented under subclass 237. Subject matter
wherein the belt* includes plural pairs of driving surfaces,
each pair including surfaces facing in opposite directions
for intended engagement within a circumferentially extending
pulley* groove defined by spaced belt-engaging faces, first
and second pairs of surfaces being interconnected with each
other, and said second pair of surfaces being spaced from
said first pair of surfaces in a direction parallel to the
longitudinal extent of the axis of the pulley with which the
belt is intended to be engaged. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
242 for a "V-belt" wherein longitudinally spaced drive faces
are on separate members.
265 for a "V-belt".
Subclass:
239
Having drive surface on helically coiled wire or cord:
This subclass is indented under subclass 237. Subject matter
wherein the drive surface is formed as an integral part of an
elongated strand helically wound about an axis so that the
external surface of the belt has sequential ridges formed by
sequential turns of the helix. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
272 for a belt having a drive surface formed of metal.
Subclass:
240
Including plural interconnected members each having a drive
surface facing in a common direction:
This subclass is indented under subclass 237. Subject matter
wherein plural drive surfaces are each formed as integral
parts of separate components, said components being
interconnected so that a drive surface on one component faces
in the same direction as the drive surface on an adjacent
component. [figure]
Subclass:
241
Forming imbricate structure:
This subclass is indented under subclass 240. Subject matter
wherein the components are sequentially interconnected in
shingled fashion with a first integral extension of each
component overlapping one adjacent component on one side, and
with a second integral extension of each component
underlapping another adjacent component on the opposite side.
[figure]
Subclass:
242
Belt has oppositely facing side drive surfaces (e.g.,
"V-belt", etc.):
This subclass is indented under subclass 240. Subject matter
wherein said drive surfaces on said belt* are for intended
engagement within a circumferentially extending pulley*
groove defined by spaced belt-engaging faces, said belt
including plural drive surfaces along one side thereof for
intended engagement with a pulley face forming one side of
the groove, and said belt also including plural drive
surfaces along the opposite side thereof for intended
engagement with a pulley face forming the other side of the
groove. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
238 for a belt structure including plural interconnected and
transversely spaced "V-belts."
265 for a "V-belt".
Subclass:
243
Surfaces on ball or roller elements:
This subclass is indented under subclass 242. Subject matter
wherein said drive surfaces are on components in the form of
balls or rollers rotatable about their own axis.
[figure]
Subclass:
244
Oppositely facing surfaces are on pair of discrete elements:
This subclass is indented under subclass 242. Subject matter
wherein a pair of said drive surfaces includes one surface
formed as an integral surface of one component facing toward
one side of said groove, and said pair includes another drive
surface spaced directly across from said one surface in a
direction parallel to the longitudinal extent of the pulley*
axis and formed as integral surface of a separate component
facing toward the other side of the groove. [figure]
Subclass:
245
And sequential pairs are interconnected longitudinally by
distinct pivot elements:
This subclass is indented under subclass 244. Subject matter
wherein first and second pairs of components are
interconnected by means allowing said first and second pair
to pivot relative to each other about an axis extending
perpendicular to the longitudinal extent of the belt*.
[figure]
Subclass:
246
Plural, inwardly facing drive surfaces along the direction
transverse to longitudinal extent of belt:
This subclass is indented under subclass 240. Subject matter
wherein the drive surfaces together form the innermost face
of a closed loop of the belt*, and wherein separate
components are interconnected and disposed relative to each
other in a direction perpendicular to the longitudinal extent
of the belt. [figure]
Subclass:
247
And plural, inwardly facing drive surfaces along the
direction parallel to longitudinal extent of belt:
This subclass is indented under subclass 246. Subject matter
wherein separate components are interconnected and also
disposed relative to each other in a direction along the
longitudinal extent of the belt*. [figure]
Subclass:
248
Including link-chain with coextensive continuous surface
belt:
This subclass is indented under subclass 237. Subject matter
wherein a drive surface is formed as an integral surface on a
unitary component extending the entire length of the belt*,
and wherein an elongated member formed of rigid pivotally
connected links is embedded or fixedly connected to said
component, said elongated member also extending the entire
length of the belt. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
100 for structure wherein an auxiliary endless band is
removably mounted in engagement with the exterior surface of
a belt to hold the belt in firm engagement with a pulley.
Subclass:
249
Including groove openings or pockets formed in belt surface
and arranged along entire length of belt (e.g., for
flexibility, air escape, etc.):
This subclass is indented under subclass 237. Subject matter
wherein a component providing an otherwise imperforate
exposed face of the belt* has a groove, plural grooves,
apertures, or depressions formed in such exposed face and
arranged in a pattern, or extending, along substantially the
entire length of the belt. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
204 for a belt having grooves or openings for intended
positive drive engagement with teeth or ridges or a pulley.
Subclass:
250
Grooves transversely extending on belt surface:
This subclass is indented under subclass 249. Subject matter
wherein at least one exposed face of said component has
plural grooves formed therein spaced along the length of the
belt*, and said grooves extend in a direction substantially
perpendicular to the longitudinal extent of the belt.
[figure]
Subclass:
251
And additional groove on opposite surface:
This subclass is indented under subclass 250. Subject matter
wherein a face on said component opposite from said one face
also has a groove or grooves formed therein. [figure]
Subclass:
252
Groove continuous and longitudinally extending:
This subclass is indented under subclass 249. Subject matter
wherein an exposed face of said component has a groove formed
therein which extends substantially the entire length of the
belt*. [figure]
Subclass:
253
Including particular means connecting opposite ends to form
loop:
This subclass is indented under subclass 237. Subject matter
wherein the belt* is formed by interconnecting opposite ends
of an elongated member, and wherein significance is
attributed to the manner by which said opposite ends are
interconnected. [figure]
Subclass:
254
Connected by adhering surface on one end to surface on other
end (e.g., by adhesive heat, seal, etc.):
This subclass is indented under subclass 253. Subject matter
wherein the opposite ends are interconnected via a chemical
bond. [figure]
Subclass:
255
Including discrete connector:
This subclass is indented under subclass 253. Subject matter
wherein the opposite ends are interconnected via a separate
connector component. [figure]
SEE OR SEARCH CLASS:
24, Buckles, Buttons, Clasps, etc., 31 for a belt connector,
per se.
Subclass:
256
Connector comprises element inserted into longitudinal
openings in belt ends:
This subclass is indented under subclass 255. Subject matter
wherein each end of the member includes walls defining an
opening which has an axial extent parallel to the direction
of the longitudinal extent of the member, said openings in
said opposite ends being axially aligned with each other when
the ends are brought together, and wherein said connector
component comprises a device inserted into the aligned
openings. [figure]
Subclass:
257
Connector comprises plate clamped externally of belt ends:
This subclass is indented under subclass 255. Subject matter
wherein said connector component is in the form of a thin,
flat device which overlaps and is interconnected with
opposite ends of the member when the ends are brought
together to form the loop. [figure]
Subclass:
258
Connector comprises cord sewn through belt ends:
This subclass is indented under subclass 255. Subject matter
wherein the connector component is the form of a separate
strand which is interlaced through opposite ends of the
member when the ends are brought together to form the loop.
[figure]
Subclass:
259
Drive surface on single sheet or web wound in plural,
completely overlying convolutions:
This subclass is indented under subclass 237. Subject matter
wherein the drive surface is formed as an integral surface on
a thin, flat elongated piece of material, said material being
wound or folded upon itself to include at least two complete
wraps of the same piece of material about itself, and wherein
the second wrap of the material completely covers the first
wrap. [figure]
Subclass:
260
Including embedded elongated strand having multiple
components or layers of diverse materials:
This subclass is indented under subclass 237. Subject matter
wherein separate cordlike member embedded interiorly of the
drive surfaces of the belt and extending through
substantially the entire length of the belt, said cordlike
member being formed of separate interwound filaments of
different materials or being impregnated or coated, prior to
being embedded in the belt, with a material different from
the material forming the cordlike member. [figure]
Subclass:
261
Including plural superposed layers each having strands
particularly oriented relative to belt dimension:
This subclass is indented under subclass 237. Subject matter
wherein the belt* includes a first group of plural cords
arranged at a first level in the belt, and a second group of
plural cords arranged at a second level in the belt, the
second level being disposed relative to the first level in a
direction toward the outermost periphery of the belt, and the
cords in the first level being formed as a part of a separate
web or as separate components from the cords in the second
level, and wherein significance is attributed to the
directional orientation of the cords in each group as related
to a length, width, or thickness dimension of the belt.
[figure]
Subclass:
262
Strand in the layers are oblique to longitudinal run of belt
(e.g., plural layers of bias fabric, etc.):
This subclass is indented under subclass 261. Subject matter
wherein the longitudinal centerline of the cords in each of
the first and second layers is at an angle less than ninety
degrees relative to the longitudinal centerline of the belt*.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
266 for a belt including at least one fabric layer.
Subclass:
263
Including discrete embedded fibers:
This subclass is indented under subclass 237. Subject matter
wherein said belt* includes multiple, slender, flexible
elements dispersed within a plastic or rubberlike material,
said elements having a length shorter than a width or
thickness dimension of said belt, and said elements being
noninterlinked with each other prior to being dispersed in
the plastic or rubberlike material.
(1) Note. Fibers which have been interlinked as by
twisting, felting, etc., to form a structure longer than the
length of the individual fibers, such as a cord or fabric,
are not considered to be discrete fibers for purposes of this
subclass. [figure]
Subclass:
264
Including plural layers of different elastomeric materials:
This subclass is indented under subclass 237. Subject matter
wherein the belt* includes at least two layers of material
having an elastic, rubberlike property, the material in one
of the layers being of different chemical composition than
the material in the other of the layers.
[figure]
Subclass:
265
Having trapezodial cross section (e.g., "V-belt", etc.):
This subclass is indented under subclass 237. Subject matter
wherein a cross section of the belt*, taken on a plane
perpendicular to the longitudinal extent of the belt, has the
approximate shape of a trapezoid. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
238 for belt structure including plural interconnected and
transversely spaced "V-belts".
242 for a "V-belt" wherein longitudinally spaced drive faces
are on separate members.
Subclass:
266
Including fabric web (e.g., knit, woven, etc.):
This subclass is indented under subclass 237. Subject matter
wherein said belt* is formed from or includes a flat,
elongated unitary piece of material, said material being
formed of strands or fibers which have been knitted, woven,
felted, or otherwise interlaced with each other to form said
unitary piece of material. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
262 for a belt including plural layers of bias fabric.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, 846 for an endless conveyor
formed of a fabric.
Subclass:
267
Fabric having particular knit or weave:
This subclass is indented under subclass 266. Subject matter
wherein the material is formed from interlaced strands, and
wherein significance is attributed to the manner in which
such strands are arranged relative to each other.
[figure]
Subclass:
268
And additional coating, layer or reinforcement of diverse
kind of material:
This subclass is indented under subclass 266. Subject matter
wherein an additional material of different chemical
construction than said elongated, unitary piece of material
is coated or otherwise formed as a layer on said elongated,
unitary piece of material. [figure] [caption]fabric
coated with oil bar compound
Subclass:
269
Additional material is leather:
This subclass is indented under subclass 268. Subject matter
wherein the additional material is leather. [figure]
Subclass:
270
Additional material is metal:
This subclass is indented under subclass 268. Subject matter
wherein the additional material is metal. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
272 for a belt having a drive surface formed of metal.
Subclass:
271
Additional material is rubber:
This subclass is indented under subclass 268. Subject matter
wherein the additional material is rubber. [figure]
Subclass:
272
Including metallic drive face:
This subclass is indented under subclass 237. Subject matter
wherein the drive surface is formed of metal. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
239 for a belt having a drive surface on a helically coiled
metal wire.
270 for a belt including a fabric layer and a metal layer.
Subclass:
273
MISCELLANEOUS:
This subclass is indented under the class definition.
Subject matter not provided for in the previous subclasses.
[figure]
CROSS-REFERENCE ART COLLECTIONS
Subclass:
900
PHASE VARIATOR:
Structure wherein at rest or during operation a point on the
periphery of a drive pulley* has a first positional
relationship with respect to a point on the periphery of a
driven pulley, and wherein means is provided for changing the
positional relationship from said first positional
relationship to a second positional relationship without
changing effective drive circumference of either pulley.
[figure]
Subclass:
901
PULLEY OR GUIDE ROLL FOR TRACK OF ENDLESS TRACK VEHICLE:
A pulley* or guide roll* intended to be used to drive or to
guide a flexible or articulated endless member used as a
wheel substitute for a land vehicle. [figure]
Subclass:
902
PARTICULAR CONNECTION BETWEEN RIM AND HUB:
Structure wherein significance is attributed to the manner in
which a belt*-engaging component of a pulley* or guide roll*
is interconnected to a component having an opening for
receiving a drive or support shaft. [figure]
Subclass:
903
PARTICULAR CONNECTION BETWEEN HUB AND SHAFT:
Structure wherein significance is attributed to the manner of
interconnecting a drive or support shaft with a component of
a pulley* or guide roll receiving such shaft. [figure]
SEE OR SEARCH CLASS:
403, Joints and Connections, appropriate subclasses for
connections, per se, and particularly 230 for a connection
between the side of a member and a rod extending transversely
thereto.
Information Products Division -- Contacts
Questions regarding this report should be directed to:
U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231
tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov
Last Modified: 6 October 2000