U.S. PATENT AND TRADEMARK OFFICE
Information Products Division |
U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
Patents classified in a subclass may be accessed by either clicking on
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Classification Index
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(definitions have been obtained from the
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Electronic Products Branch)
Class 464
ROTARY SHAFTS, GUDGEONS, HOUSINGS, AND FLEXIBLECOUPLINGS FOR
ROTARY SHAFTS
Class Definition:
This is the class for rotary shafts, a rotary shaft being
defined as an elongated member intended to be rotated about
its longitudinal axis to transmit torque.
This is also the class for gudgeons, a gudgeon being defined
as a device secured to the end of a shaft or other rotary
body, for rotation therewith, to facilitate mounting the body
in a support.
This is also the class for housings, a housing being defined
as a structure providing an enclosure surrounding at least a
portion of a shaft, a flexible coupling, or a flexible motion
transmitting device such as a Bowden Cable; such enclosure
functioning to prevent in advertant contact between an
operator or foreign matter and the shaft, flexible coupling,
or flexible motion transmitting device; or to retain
lubricant or the like within the space surrounded by the
enclosure.
This is also the class for flexible couplings for rotary
shafts, a flexible coupling being defined as structure
interconnecting rotary devices, at least one of them being a
shaft, in order to facilitate relative motion between them as
they transmit torque, or to enable torque to be transmitted
through rotary devices having misaligned or angularly related
rotational axes.
A nominal recitation of a device for applying rotary power
to, or receiving rotary power from, a structure of this class
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 structure of this
class that is not found herein, may be found in an
appropriate manufacturing class, such as Class 29, Metal
Working; or Class 72, Metal Deforming.
LINE BETWEEN CLASS 192 AND CLASS 464
Class 192 has couplings of the kind wherein torque
transmission may be selectively or automatically disrupted,
wherein the couplings of Class 464 are generally intended for
continuous torque transmission with provision for relative
movement between the coupled members while torque is being
transmitted. There are, however, exceptions to this general
rule as follows:
A. Class 464, in subclasses 32+, has structure wherein
torque transmission is disrupted by breakage of a frangible
element which may be replaced.
B. Class 464, in subclasses 30+, has overload release
couplings wherein relative rotation between coupled members
continues so long as an overload condition occurs. The line
between Class 464, subclasses 30+, and Class 192, subclass
56.1+, is that Class 464 takes structure wherein relatively
rotatable surfaces move with respect to each other during an
overload condition; but drive through such surfaces is
automatically re-established, without an additional
operation, upon correction of the overload condition. Class
192, subclass 56.1+, requires a further operation, in
addition to correcting the overload condition, to
re-establish the drive; such further operation being, for
example, operator assisted re-engagement or reduction in
rotational speed of a power input member.
C. Class 464, in subclasses 24+, provides for fluid
couplings wherein relative movement between coupled members
is facilitated by compression or decompression of a fluid
wherein a significant feature is to accommodate relative
movement between the coupled members for dampening,
buffering, etc. Class 192, subclasses 58.1+, has fluid
couplings wherein a fluent material envelops the coupled
parts, and the torque transmission occurs via a shearing
action in the fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
22 for a cleaning device which is mounted to act on a shaft
so as to clean it during normal torque transmission.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 256.5
for a cleaning device mounted to act on a moving surface. A
cleaning device which is mounted to act on a shaft so as to
clean it during normal torque transmission is in Class 464.
See Subclass References to the Current Class, above.
29, Metal Working, for a method of assembling a structure of
this class (464).
74, Machine Element or Mechanism, subclass 15.6 for a power
take-off from a shaft extension; subclasses 18+ for motion
transmitting means including a flexible sealing diaphragm
connected to a moving rod and a casing; subclasses 380+ for
pivotally supported gearing; subclass 411 for structure
providing yield ability in gear trains; subclass 443 for
sound deadening means associated with rotary bodies;
subclasses 489 and 500.5+ for a flexible motion transmitter
(e.g., Bowden cable); subclasses 572+ for a flywheel or rotor
with balancing or vibration dampening means; and subclasses
606+ for a gear casing.
81, Tools, subclasses 467+ for a wrench or screwdriver
responsive to torque on the work.
105, Railway Rolling Stock, subclass 131 for a resilient
wheel or axle drive.
123, Internal-Combustion Engines, subclass 406.75 for spark
ignition timing controlled by a centrifugal timing
mechanism.
138, Pipes and Tubular Conduits, subclasses 118+ for a
flexible conduit.
152, Resilient Tires and Wheels, appropriate subclasses for a
connection which facilitates relative movement between a rim
and a hub on a wheel.
160, Flexible or Portable Closure, Partition, or Panel,
subclass 326 for a combined roller and gudgeon in a roller
for accumulating material on a roll.
172, Earth Working, subclasses 261+ for an earthworking
element combined with means permitting said element to shift
in response to an overload condition.
173, Tool Driving or Impacting, subclass 93.5 for a rotary
tool drive having a torque responsive impact in an impacting
device; and subclasses 165+ for means to drive a tool about
an axis and including a relatively fixed drive for an
advancing tool.
175, Boring or Penetrating the Earth, subclass 195 for a
rotary drive table for a relatively advancing tool. See the
Class 175 Class Definition, References to Other Classes, the
Search Note to Class 464 and see also Class 175, subclass
320, (2) Note, for a statement of the line.
180, Motor Vehicles, subclasses 254+ for a vehicle having a
driven and steerable wheel and including a flexible drive
transmitting means for transmitting torque to the wheel.
184, Lubrication, for lubrication systems, per se; but if a
shaft or flexible coupling includes structure which is
modified so as to admit lubrication, classification is in
Class 464, subclasses 7+.
192, Clutches and Power-Stop Control, subclass 56.1 for an
overload release clutch; subclasses 58.1+ for a fluent
material clutch; subclasses 84.1+ for an electric operator
for a clutch; subclasses 85+ for a fluid pressure operator
for a clutch; subclasses 103+ for a speed responsive
operator; and subclasses 200+ for a clutch element combined
with means for resiliently mounting such element on a hub.
In general, Class 192 has couplings of the kind wherein
torque transmission may be selectively or automatically
disrupted, wherein the couplings of Class 464 are generally
intended for continuous torque transmission with provision
for relative movement between the coupled members while
torque is being transmitted. For exceptions to this general
rule, see Lines With Other Classes and Within This Class,
Line Between Class 192 and Class 464, above.
200, Electricity: Circuit Makers and Breakers, subclass
19.28 for ignition distributors with centrifugal advance
mechanism.
241, Solid Material Comminution or Disintegration, subclass
32 for overload release means for comminution apparatus, and
subclasses 291+ for significant comminuting structure mounted
on a drive shaft therefor.
277, Seal for a Joint or Juncture, for a generic sealing
means or process, subclass 504 for a dynamic,
circumferential contact seal for other than a piston that
accommodates gyratory or oscillatory motion by using a
flexible connection having static contact between the seal
and one of the relatively movable parts; subclasses 549+ for
a dynamic circumferential contact seal for other than a
piston having a peripheral radially sealing flexible
projection (e.g., lip seal, etc.) or subclasses 634+ for a
static, contact seal for other than an internal combustion
engine, or a pipe, conduit, or cable that is a flexible
sleeve, boot, or diaphragm.
279, Chucks or Sockets, subclass 16 for a self-centering or
floating chuck or socket.
285, Pipe Joints or Couplings, appropriate subclasses for a
coupling between fluid conducting pipes.
295, Railway Wheels and Axles, subclass 36.1 for an axle of
that class.
301, Land Vehicles: Wheels and Axles, subclass 124.1 for an
axle of that class.
310, Electrical Generator or Motor Structure, subclasses 75+
for a drive mechanism which may include a flexible shaft,
and subclasses 92+ for torque transmitting clutches.
403, Joints and Connections, appropriate subclasses for a
joint or connector, per se. If, however, a coupling between
torque transmitting members is such as to facilitate
connection or relative movement between members having
misaligned or angularly related axes, then such coupling is
in Class 464. See Class 403, subclasses 52+ for a joint
between articulated members other than rotary torque
transmitting members.
409, Gear Cutting, Milling, or Planing, subclasses 231+ for
a cutter spindle or spindle support.
433, Dentistry, subclass 112 for a flexible shaft
transmission in a dental apparatus.
440, Marine Propulsion, subclass 83 for shafting combined
with a screw propeller in marine propulsion apparatus.
474, Endless Belt Power Transmission Systems or Components,
subclass 94 for a flexible connection between a pulley or
guide roll rim and its mount.
475, Planetary Gear Transmission Systems or Components,
subclasses 346+ (and see The Search Notes therein) for a
flexible coupling in a planetary gear arrangement.
492, Roll or Roller, for a roll, per se, not elsewhere
provided for, and see the search notes thereunder.
SUBCLASSES
Subclass:
1
SPEED RESPONSIVE DEVICE FOR ADJUSTING RELATIVE ROTATIONAL
POSITION OF COUPLED MEMBERS:
This subclass is indented under the class definition.
Flexible coupling structure wherein a shaft and another
member are mounted for relative rotation about a common axis
and wherein means is provided to sense velocity or change of
velocity of the shaft or other member and responsive to such
sensed velocity or change of velocity, said means acts
directly or indirectly to alter the relative rotational
position of the shaft and other member between predetermined
relative rotational positions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 160+ for a coupling other than speed responsive
to adjust the relative rotational position of coupled
members.
SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, subclass 406.75 for spark
ignition timing controlled by a centrifugal timing
mechanism.
200, Electricity: Circuit Makers and Breakers, subclass
19.21 for an ignition distributor with centrifugal advance
mechanism.
Subclass:
2
Actuated by fluid or electricity:
This subclass is indented under subclass 1. Subject matter
wherein said means acts through the medium of force derived
from fluid or electrical power to alter the relative
rotational position of the shaft and the other member.
Subclass:
3
Pivoted weight:
This subclass is indented under subclass 1. Subject matter
wherein said means comprises a mass swingably mounted for
movement about a pivotal axis in response to centrifugal
force caused by rotation of the shaft or other member.
Subclass:
4
Gear segment on pivoted weight:
This subclass is indented under subclass 3. Subject matter
wherein the relative rotational positions of the shaft and
the other member are altered via gear teeth formed on or
carried by the swingable mass so as to interact with another
set of gear teeth.
SEE OR SEARCH THIS CLASS, SUBCLASS:
109 for a gear segment associated with a coupling which
accommodates drive between members having misaligned or
angularly related axes.
Subclass:
5
Pivotal movement opposed by compression of coil spring along
its axis:
This subclass is indented under subclass 3. Subject matter
wherein a helically wound device, which is resiliently
compressible along its longitudinal axis, is mounted with
respect to said swingable mass in such a manner that movement
of said mass by centrifugal force is opposed by the resilient
compression of said device.
Subclass:
6
Pivotal movement opposed by expansion of coil spring along
its axis:
This subclass is indented under subclass 3. Subject matter
wherein a helically wound device, which is resiliently
expansible along its longitudinal axis, is mounted with
respect to said swingable mass in such a manner that movement
of said mass by centrifugal force is opposed by the resilient
expansion of said device.
Subclass:
7
HAVING LUBRICATING MEANS:
This subclass is indented under the class definition. Subject
matter provided with means for directing or applying a fluid
substance between relatively movable surfaces to reduce
friction between such relatively movable surfaces.
SEE OR SEARCH CLASS:
184, Lubrication, appropriate subclasses for lubrication
systems, per se.
Subclass:
8
Lubricant impregnated into material:
This subclass is indented under subclass 7. Subject matter
wherein said lubricant is applied by means of a porous
surface and wherein said porous surface is permeated by said
fluid substance so that said flowable substance is located on
and beneath the surface of said device throughout the extent
of said porous surface.
Subclass:
9
Metallic material:
This subclass is indented under subclass 8. Subject matter
wherein said permeated device is made of metal.
Subclass:
10
For overload release coupling:
This subclass is indented under subclass 7. Subject matter
wherein said relatively movable surfaces are associated with
flexible coupling structure which permits relative rotation
between torque input and output members for as long as said
output member is subjected to a resistance to rotation
greater than a predetermined value.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 30+ for an overload release coupling.
Subclass:
11
For coupling having torque transmitted via radially directed
pin received in conforming aperture:
This subclass is indented under subclass 7. Subject matter
wherein said relatively movable surfaces are associated with
flexible coupling structure including a first part carried by
one member of the coupling, said first part being in the form
of a right cylinder with the axis of the cylinder extending
perpendicularly to, and radially outwardly from, the axis of
rotation of said one member of the coupling; and including a
second part carried by the coupling, said second part
comprising means defining a opening for receiving said first
part.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 112+ for a coupling which transmits torque via a
radially directed pin.
Subclass:
12
Lubricant supplied to plural pins via common ring which
encapsulates pins:
This subclass is indented under subclass 11. Subject matter
wherein coupling structure includes a plurality of
circumferentially spaced right cylindrical parts, and said
structure further includes an annular member enclosing said
parts, said annular member comprising walls defining a path
for flow of said substance from one to another of said
parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 125+ for a ring which receives plural pins.
Subclass:
13
Pin includes longitudinally extending internal passage:
This subclass is indented under subclass 12. Subject matter
wherein at least one of said right cylindrical parts includes
means defining a flow path for said fluid, said flow path
being located internally of the external surface of said part
and extending in a direction parallel to said axis of said
part.
Subclass:
14
Pin includes longitudinally extending internal passage:
This subclass is indented under subclass 11. Subject matter
wherein said right cylindrical part includes means defining a
flow path for said fluid, said flow path being located
internally of the external surface of said part and extending
in a direction parallel to the axis of said part.
Subclass:
15
For coupling having torque transmitted via a ball:
This subclass is indented under subclass 7. Subject matter
wherein said relatively movable surfaces are associated with
flexible coupling structure including a spherical part for
transmitting torque between said relatively movable members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 139+ for a coupling which transmits torque via a
radially spaced ball.
Subclass:
16
For coupling having torque transmitted via intermeshing
teeth:
This subclass is indented under subclass 7. Subject matter
wherein said relatively movable surfaces are associated with
flexible coupling structure including alternating ridges and
valleys on each of said coupled members, the ridges of one
member being received within the valleys of the other member,
and wherein torque is transmitted by surface engagement of
the ridges of one member with the ridges of the other
member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 157+ for a coupling which transmits torque via
intermeshing teeth.
Subclass:
17
HAVING HEATING OR COOLING MEANS:
This subclass is indented under the class definition. Subject
matter provided with means for applying heat to or extracting
heat from said subject matter.
SEE OR SEARCH CLASS:
165, Heat Exchange, for heating or cooling means, per se.
Subclass:
18
FLEXIBLE COUPLING BETWEEN FLUID-CONDUCTING ROTARY SHAFTS
(E.G., COUPLING BETWEEN SECTIONS OF DRILL STRING, ETC.):
This subclass is indented under the class definition. A
flexible coupling for interconnecting plural shafts, said
shafts being of tubular construction for conducting a fluid
internally of the shaft along the length thereof.
SEE OR SEARCH CLASS:
175, Boring or Penetrating the Earth, subclasses 320+ for a
tool shaft detail, and see the reference to Class 175 in the
search class notes under the class definition of Class 464.
285, Pipe Joints or Couplings, appropriate subclasses for a
coupling between fluid conducting pipes.
Subclass:
19
Relative angular displacement of axes of shafts:
This subclass is indented under subclass 18. Subject matter
wherein said coupling facilitates changing the angle defined
by the longitudinal axes of the shafts with respect to each
other.
Subclass:
20
Including member deformable by relative movement between
shafts:
This subclass is indented under subclass 18. Subject matter
and further including a part which is deformed when one of
said shafts moves relative to the other of said shafts.
Subclass:
21
Member is coiled spring:
This subclass is indented under subclass 20. Subject matter
wherein said part is a helically wound resilient device.
Subclass:
22
HAVING CLEANING MEANS:
This subclass is indented under the class definition. Subject
matter provided with means associated with such subject
matter to maintain its cleanliness during operation.
(1) Note. For a patent to be placed herein, the cleaning
device must be particularly adapted to be associated with a
subject matter of this class to provide cleaning during
torque transmission. If the device is of general utility and
not particularly adapted to be mounted on operating members
of this class, classification is in a class appropriate for
cleaning of general utility, such as Class 15 or 134.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 256.5
for a cleaning device mounted to act on a moving surface.
Subclass:
23
WITH AUXILIARY INDICATOR OR ALARM:
This subclass is indented under the class definition. Subject
matter and further including a separate device for indicating
a condition thereof or for providing a warning that an
undesirable condition exists.
Subclass:
24
FLUID COUPLING:
This subclass is indented under the class definition. A
flexible coupling wherein a liquid or gas is used to affect
or effect the coupling.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 58.1 wherein
a fluent material envelops the coupled parts; subclasses 85+
for a fluid pressure operator for a clutch; and see the
reference to Class 192 in the search class notes under the
general definition of Class 464 for a statement of the line.
Subclass:
25
For transmitting limited pulsating torque (e.g., fluid drive
coupling for impulse tool):
This subclass is indented under subclass 24. Subject matter
including structure for applying torque in cyclical pulses
from an input member to a relatively rotatable output member
through the medium of said liquid or gas, and wherein means
is provided to limit the maximum torque applied during each
pulse.
SEE OR SEARCH CLASS:
81, Tools, subclasses 467+ for a wrench or screwdriver
responsive to torque on the work.
Subclass:
26
Including piston axially movable in cylinder having axis
coextensive with axis of rotation of coupled members:
This subclass is indented under subclass 24. Subject matter
wherein the liquid or gas is contained within a cylinder
having an axis which is aligned with the rotational axis of
the coupled members, and wherein a piston is mounted within
the cylinder for reciprocable movement along the axis of the
cylinder.
Subclass:
27
Including multiple piston-cylinder devices radially spaced
from axis of rotation:
This subclass is indented under subclass 24. Subject matter
wherein a plurality of cylinders containing the liquid or gas
are located in a position radially spaced from the axis of
rotation of the coupled members, each of said cylinders
having a piston reciprocable therein.
Subclass:
28
Fluid confined in enclosure having flexible walls:
This subclass is indented under subclass 24. Subject matter
wherein the liquid or gas is contained within a device having
walls made of flexible material.
Subclass:
29
ELECTRICAL OR MAGNETIC COUPLING:
This subclass is indented under the class definition. A
flexible coupling including electrical or magnetic means for
affecting or effecting the coupling.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 84.1 for an
electric operator for a clutch.
Subclass:
30
OVERLOAD RELEASE COUPLING:
This subclass is indented under the class definition. A
flexible coupling wherein means is provided for transmitting
torque between input and output members so as to accommodate
relative rotation between said members when resistance to
rotation of said output member exceeds a predetermined value,
said means including either (a) a device which is designed to
rupture when said resistance to rotation exceeds said
predetermined value, or (b) a device which slips or
disengages when said resistance to rotation exceeds said
predetermined value but which automatically reengages without
operator intervention or other additional operation when said
resistance to rotation no longer exceeds said predetermined
value.
SEE OR SEARCH THIS CLASS, SUBCLASS:
10 for an overload release coupling including means to
supply a lubricant to relatively rotating surfaces.
25 for a coupling for transmitting a limited pulsating
torque via a fluid.
SEE OR SEARCH CLASS:
81, Tools, subclasses 467+ for a wrench or screwdriver
responsive to torque on the work.
172, Earth Working, subclasses 261+ for an earthworking
element combined with means permitting said element to shift
in response to an overload.
173, Tool Driving or Impacting, subclass 93.5 for a rotary
tool drive having torque responsive impact in an impacting
device.
192, Clutches and Power-Stop Control, subclass 56.1 for an
overload release clutch, and see a statement of the line in
the search class notes following the general definition of
Class 464.
241, Solid Material Comminution or Disintegration, subclass
32 for an overload release means for comminution apparatus.
Subclass:
31
Including thermally responsive element:
This subclass is indented under subclass 30. Subject matter
wherein said means includes a device for sensing the
temperature of a part in said coupling, and in response to
said sensed temperature, controlling the relative rotation
between the members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
17 for class subject matter including an auxiliary device to
apply heat to or extract heat from such subject matter.
Subclass:
32
Torque transmitted via frangible element:
This subclass is indented under subclass 30. Subject matter
wherein rotation is transmitted from the input member to the
output member through the medium of a device which is
designed to rupture when the resistance to rotation is
greater than said predetermined value.
Subclass:
33
Axially extending pin:
This subclass is indented under subclass 32. Subject matter
wherein the device is an elongated rodlike element mounted so
that the longitudinal extent of the element is parallel to,
or coextensive with, the axis of rotation of the coupled
members.
Subclass:
34
Torque transmitted via radially spaced deformable roller:
This subclass is indented under subclass 30. Subject matter
wherein rotation is transmitted from the input to the output
member through the medium of a device rotatable about its own
axis and spaced radially from the axis of rotation of the
members, and wherein the device is made of a material capable
of being deformed to accommodate said relative rotation.
Subclass:
35
Torque transmitted via a ball:
This subclass is indented under subclass 30. Subject matter
wherein rotation is transmitted from the input to the output
member through the medium of a spherical element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 139+ for a coupling which transmits torque via a
radially spaced ball to accommodate drive between members
having misaligned or angularly related axes.
Subclass:
36
Axially biased:
This subclass is indented under subclass 35. Subject matter
wherein the spherical element is resiliently biased along a
line of force parallel to the rotational axes of the driving
and driven members.
Subclass:
37
Torque transmitted via resiliently biased positive drive
connection (e.g., cam and follower):
This subclass is indented under subclass 30. Subject matter
wherein one of said input or output members, or an
intermediate member, includes a contoured face; and the other
of said input or output members, or an intermediate member,
includes or carries a device resiliently biased into
engagement with the contoured face to provide a positive
drive connection for transmitting torque between the input
and output members by contact of the device with an abutment
forming a part of the contoured face, and wherein the shape
of the abutment is such as to force the device against its
resilient bias in a direction away from the abutment to
permit said relative rotation when said resistance to
rotation exceeds said predetermined value.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 35+ wherein the torque transmitting element is a
ball.
Subclass:
38
Axially biased:
This subclass is indented under subclass 37. Subject matter
wherein the resilient bias of said device into engagement
with said contoured surface is along a line of force parallel
to the rotational axes of the driving and driven members.
Subclass:
39
By spring coiled about axis of rotation:
This subclass is indented under subclass 38. Subject matter
wherein the resilient bias is provided by a device helically
wound about the axis of rotation of the driving and driven
members.
Subclass:
40
Torque transmitted via frictional engagement of coil spring:
This subclass is indented under subclass 30. Subject matter
wherein rotation is transmitted from the input member to the
output member through the medium of a helically coiled
resilient device which frictionally engages one of said
members to transmit torque, but which slips when said
resistance to rotation is greater than said predetermined
value.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 57+ for a flexible coupling wherein torque is
transmitted via a coiled spring.
Subclass:
41
Torque transmitted via plural circumferentially spaced
friction elements:
This subclass is indented under subclass 30. Subject matter
wherein one of said input or output members includes or
carries a plurality of discrete frictional elements
circumferentially spaced from each other about the axis of
rotation of said one of said members, said frictional
elements having surfaces engaged with a surface or surfaces
on the other of said members to transmit rotation, the
engaged surfaces slipping when the resistance to rotation
exceeds said predetermined value.
Subclass:
42
Torque transmitted via frictional engagement of conical or
frustoconical surfaces:
This subclass is indented under subclass 30. Subject matter
wherein rotation is transmitted from said input member to
said output member by frictional engagement of surfaces
having the shape of a cone or the frustum of a cone.
Subclass:
43
With separate resilient member for biasing surfaces into
engagement:
This subclass is indented under subclass 42. Subject matter
which further includes a disparate resilient device for
biasing the conical or frustoconical surfaces into
engagement.
Subclass:
44
Coil spring:
This subclass is indented under subclass 43. Subject matter
wherein the resilient device is a helically coiled resilient
member.
Subclass:
45
Torque transmitted via frictional engagement of planar
radially extending surfaces:
This subclass is indented under subclass 30. Subject matter
wherein rotation is transmitted from said input member to
said output member by frictional engagement of surfaces which
extend in a direction radially outwardly from, and in a plane
perpendicular to, the axis of rotation of the driving and
driven members.
Subclass:
46
With separate resilient members for biasing surfaces into
engagement:
This subclass is indented under subclass 45. Subject matter
which further includes a disparate resilient device for
biasing the frictionally engaged surfaces into engagement.
Subclass:
47
Coil spring:
This subclass is indented under subclass 46. Subject matter
wherein the resilient device is a helically coiled resilient
member.
Subclass:
48
Plural, circumferentially spaced coil springs:
This subclass is indented under subclass 47. Subject matter
including a plurality of helically coiled resilient members
spaced circumferentially from each other about the rotational
axis of the driving and driven members.
Subclass:
49
COUPLING DEVICE INCLUDES ENDLESS CHAIN ENGAGED WITH
CIRCUMFERENTIAL TEETH ON COUPLED MEMBERS:
This subclass is indented under the class definition. A
flexible coupling wherein the coupled members are axially
spaced from each other, and each includes a plurality of
circumferentially spaced, radially extending teeth, and
wherein coupling structure includes a closed loop chain
having grooves or openings spaced along the length thereof
for receiving the teeth on the coupled members.
Subclass:
50
COUPLING DEVICE INCLUDES ANGLED OR HINGED ROD HAVING OPPOSITE
ENDS RELATIVELY RECIPROCABLE AXIALLY IN BORES IN SPACED
COUPLED MEMBERS:
This subclass is indented under the class definition. A
flexible coupling comprising an axially elongated member
which is bent along its longitudinal axis or which is formed
or pivotally connected sections, the opposite ends of said
member being mounted for relative reciprocable axial movement
in openings formed in axially spaced coupled members.
Subclass:
51
TORQUE TRANSMITTED VIA FLEXIBLE ELEMENT:
This subclass is indented under the class definition. A shaft
or flexible coupling as defined in the ... wherein said
shaft or flexible coupling includes an element through which
rotational torque is transmitted, and wherein said element is
made of a material which is flexible.
(1) Note. While all materials may have at least some
minimal inherent flexibility, for a patent to be placed in
this and indented subclasses, such flexibility must be
intended to be used as a desirable feature in the functional
operation of the device.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclass 411 for structure
providing yield ability in gear trains; subclass 443 for
sound deadening means associated with rotary bodies; and
subclasses 489 and 500.5+ for a flexible push-pull motion
transmitting means such as a Bowden cable.
105, Railway Rolling Stock, subclass 131 for a resilient
drive for a wheel or axle.
180, Motor Vehicles, subclasses 254+ for a vehicle having a
driven and steerable wheel and including a flexible drive
transmitting means for transmitting torque to the wheel.
192, Clutches and Power-Stop Control, subclasses 200+ for a
clutch element combined with means to resiliently mount such
element on a hub.
279, Chucks or Sockets, subclass 16 for a self-centering or
floating chuck or socket.
310, Electrical Generator or Motor Structure, subclasses 75+
for a drive mechanism which may include a flexible shaft.
433, Dentistry, subclass 112 for a flexible shaft
transmission in a dental apparatus.
474, Endless Belt Power Transmission Systems or Components,
subclass 94 for a flexible connection between a pulley or
guide roll rim and its mount.
Subclass:
52
With stationary housing:
This subclass is indented under subclass 51. Subject matter
and further including a housing as defined in the class
definition, said housing being nonrotatable with said shaft
or coupling.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 170+ for a housing, per se, for a shaft or
coupling.
Subclass:
53
And threaded annulus surrounding terminal end of housing for
attachment to auxiliary housing:
This subclass is indented under subclass 52. Subject matter
wherein an annular, threaded connector device extends around
the end of said housing, said threads on said connector
cooperating with complementary threads on another housing to
secure said housings together.
SEE OR SEARCH THIS CLASS, SUBCLASS:
177 for separably connected housings for separably connected
shafts.
Subclass:
54
Element coiled sinusoidally about axially spaced driving and
driven members:
This subclass is indented under subclass 51. Subject matter
wherein said element is bent into the general shape of a sine
curve, and wherein the bends of the element are curved about
portions of driving and driven members spaced apart from each
other in the direction of the longitudinal axis of rotation
of the members.
Subclass:
55
Element is flaccid and operates in tension during torque
transmission (e.g., belt, cable, etc.):
This subclass is indented under subclass 51. Subject matter
wherein said element is limp or sags under its own weight,
said element being connected to driving and driven members at
points spaced from each other along the longitudinal extent
of said element so that rotary torque transmitted from the
driving to the driven member via said element places said
element in tension.
Subclass:
56
Element has circular cross section:
This subclass is indented under subclass 55. Subject matter
wherein a cross section in a plane perpendicular to the
longitudinal extent of the element is generally circular.
Subclass:
57
Element has plural convolutions wound about rotational axis:
This subclass is indented under subclass 51. Subject matter
wherein said element is elongated and coiled about a
longitudinal centerline which is the rotational axis of said
element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
40 for a spring which transmits torque by frictional
engagement in an overload release coupling.
Subclass:
58
Plural radially overlapping convoluted elements:
This subclass is indented under subclass 57. Subject matter
and further including an additional elongated torque
transmitting element coiled about the same longitudinal
centerline in a manner such that one of said elongated
elements overlaps the other in a direction extending radially
outwardly of said rotational axis.
Subclass:
59
Single element has plural radially overlapping convolutions:
This subclass is indented under subclass 57. Subject matter
wherein said element is wound in a plurality of successive
radially overlapping coils.
Subclass:
60
Convoluted element has noncircular cross section:
This subclass is indented under subclass 57. Subject matter
wherein the shape of a transverse cross section taken through
said element is other than circular.
Subclass:
61
Element is a spring coiled about centerline angularly related
to or radially spaced from rotational axis:
This subclass is indented under subclass 51. Subject matter
wherein said element is a helically coiled resilient element,
and wherein the center line of the helix is either radially
spaced from or extends at an angle to the rotational axes of
members interconnected by said element.
Subclass:
62
Plural springs:
This subclass is indented under subclass 61. Subject matter
and further including an additional helically coiled element
having its centerline radially spaced from or extending at an
angle to the rotational axes of members interconnected by
said elements.
Subclass:
63
Centerline of springs axially spaced from each other along
rotational axis:
This subclass is indented under subclass 62. Subject matter
wherein the centerline of the helix of one of the elements is
spaced from the centerline of the helix of the other of the
elements in an axial direction along the rotational axes of
members interconnected by said elements.
Subclass:
64
Plural superposed springs on common centerline:
This subclass is indented under subclass 62. Subject matter
wherein both of the elements are coiled about a common
centerline, and wherein one of the elements overlaps the
other.
Subclass:
65
Centerline of springs radially spaced from and parallel to
rotational axis:
This subclass is indented under subclass 62. Subject matter
wherein the centerline of each of the elements is spaced
radially outwardly from and extends parallel to the
rotational axis of members interconnected by said elements.
Subclass:
66
Opposite ends of springs are equidistant from rotational
axis:
This subclass is indented under subclass 62. Subject matter
wherein the distance on a radial line extending from the
rotational axis to the centerline of the element at one end
of the element is the same as the distance on a radial line
extending from the rotational axis to the centerline of the
element at the opposite end of the element.
Subclass:
67
Springs on circumferentially extending curved centerline:
This subclass is indented under subclass 66. Subject matter
wherein the centerline of said element is curved and extends
in circumferential direction radially spaced from the
rotational axes of members interconnected by said elements.
Subclass:
68
Springs positioned between axially spaced plates of one
member and driven by other member extending radially between
said plates:
This subclass is indented under subclass 66. Subject matter
wherein driving and driven members are resiliently connected
by said elements, one of said members including a pair of
plates spaced apart axially from each other along the
rotational axis, said elements being received in the space
between said plates, and the other of said members including
a radial projection extending between said plates and
engaging said elements for said radial projections to drive
said plates via said elements.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclasses 200+ for a
clutch element combined with means to resiliently mount such
element on a hub.
Subclass:
69
Plural flexible links connected to circumferentially spaced
axially directed pins on drive and driven members:
This subclass is indented under subclass 51. Subject matter
wherein driving and driven members each include a plurality
of connector pins extending in an axial direction and spaced
circumferentially about the axis of rotation of said members,
and wherein a plurality of said elements are positioned
between said members, each of said elements being elongated
and joined at one point to a connector pin on one of said
members and joined at a spaced point to a connector pin on
the other of said members.
Subclass:
70
Element is annular liner within radially spaced pin-receiving
opening:
This subclass is indented under subclass 51. Subject matter
wherein a rotary drive or driven member includes means
defining an aperture spaced in a radial direction of the
rotational axis of one of said members for receiving a pin
extending between said members, and wherein said element
comprises a ringlike device positioned between the walls of
said aperture and said pin.
Subclass:
71
Axially directed pin:
This subclass is indented under subclass 70. Subject matter
wherein the longitudinal axis of said pin extends in a
direction generally parallel to the rotational axis of the
members.
Subclass:
72
Plural axially spaced liners:
This subclass is indented under subclass 71. Subject matter
wherein there is provided a plurality of said ringlike
devices spaced axially from each other, either in the same
aperture or in separate apertures, in the same direction as
the rotational axes of the members.
Subclass:
73
Element positioned between intermeshing teeth on driving and
driven members:
This subclass is indented under subclass 51. Subject matter
wherein a driving member includes a face having surfaces
defining alternating ridges and valleys, and a driven member
also includes a face having surfaces defining alternating
ridges and valleys, the ridges of one member nesting within
the valleys of the other member to provide surfaces facing
each other, and wherein said element has portions positioned
between said facing surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
157 for other coupling structure including axially
intermeshing teeth, and see the search notes following
subclass 157.
Subclass:
74
Teeth on radially overlapping surfaces:
This subclass is indented under subclass 73. Subject matter
wherein the face having ridges and valleys on one of said
members overlaps the face having ridges and valleys on the
other of said members in a direction extending radially
outwardly of the rotational axes of the members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 158+ for other coupling structure including
intermeshing teeth on radially overlapping surfaces, and see
the search notes following subclass 158.
Subclass:
75
Element is a continuous annulus extending around rotational
axis:
This subclass is indented under subclass 74. Subject matter
wherein said element is ringlike in shape and encircles the
rotational axis of said members, said element including
projecting portions around its circumference which fit
between said nesting ridges and valleys.
Subclass:
76
Plurality of disparate elements:
This subclass is indented under subclass 73. Subject matter
including a plurality of individually separable elements.
(1) Note. Patents in this subclass are distinguished from
patents in subclass 73, in that, in subclass 73 a common
element is shaped so as to provide surface portions between
intermeshing teeth, while in this subclass (76) the elements
are separable, at least at the initial stages of assembly
between the teeth.
Subclass:
77
Element is an open loop spring curved about rotational axis:
This subclass is indented under subclass 51. Subject matter
wherein said element is an elongated resilient device bent
into the general shape of an open circle with the free ends
spaced from each other on one side of the rotational axis of
members interconnected by said element, and the curved
portion between the ends extends around the rotational axis.
Subclass:
78
Element is a tube with slot through wall to provide
flexibility:
This subclass is indented under subclass 51. Subject matter
wherein said element is an elongated tube having an opening
cut through the wall thereof to facilitate flexure of the
element.
Subclass:
79
Element includes diverging wall portions defining annular
groove completely surrounding Rotational axis (e.g.,
bellows):
This subclass is indented under subclass 51. Subject matter
wherein said element comprises a pair of walls which meet at
a common juncture and diverge from said juncture, said walls
at said juncture following a circular circumferential path
which surrounds and completely encloses the rotational axis
of said element with said diverging walls defining a groove
surrounding said rotational axis.
Subclass:
80
Nonmetallic:
This subclass is indented under subclass 79. Subject matter
wherein said element is formed of a material other than
metal.
Subclass:
81
Plural circumferentially spaced elements:
This subclass is indented under subclass 51. Subject matter
wherein there is provided a plurality of said elements spaced
circumferentially from each other about the rotational axes
of driving and driven members interconnected by said
elements.
Subclass:
82
Extending between radially overlapping surfaces on driving
and driven members:
This subclass is indented under subclass 81. Subject matter
wherein one of said members has a surface which overlaps a
surface of the other of said members in a direction extending
radially outwardly of the rotational axis, and wherein said
elements extend between and interconnect said overlapping
surfaces.
Subclass:
83
Nonmetallic:
This subclass is indented under subclass 82. Subject matter
wherein said elements are made of a material other than
metal.
Subclass:
84
Elements are bowed leaf springs:
This subclass is indented under subclass 81. Subject matter
wherein said elements have a substantial length and width as
compared to a thickness dimension, and are curved in the
relaxed condition for deflection along said curve to provide
flexure during torque transmission.
Subclass:
85
Nonmetallic:
This subclass is indented under subclass 81. Subject matter
wherein said elements are formed of a material other than
metal.
Subclass:
86
Axially extending torsion bars:
This subclass is indented under subclass 81. Subject matter
wherein said elements are each in the form of an elongated
rodlike device, and wherein flexibility is obtained by twist
of said elements about their longitudinal axis.
Subclass:
87
Nonmetallic element:
This subclass is indented under subclass 51. Subject matter
wherein said element is made of a material other than metal.
Subclass:
88
Element is hollow sleeve surrounding rotational axis and
connected at opposite ends to axially spaced torque
transmitting surfaces on driving and driven members:
This subclass is indented under subclass 87. Subject matter
wherein said element is an elongated tube, the longitudinal
axis of which is coincident with the rotational axes of
driving and driven members interconnected by it, said tube
being connected at one end to a torque transmitting surface
on said driving member and being connected at the opposite
end to a torque transmitting surface on said driven member.
Subclass:
89
Extending between radially overlapping surfaces on driving
and driven members:
This subclass is indented under subclass 87. Subject matter
wherein one of a driving or driven member interconnected by
said element has a surface which overlaps a surface on the
other member in a direction extending radially outwardly of
the rotational axis of said members, and wherein said element
extends between and interconnects said overlapping surfaces.
Subclass:
90
Plural elements radially overlapping:
This subclass is indented under subclass 89. Subject matter
wherein a plurality of said elements are arranged in such a
manner that one of said elements is positioned radially
outwardly of another of said elements.
Subclass:
91
Plural elements axially spaced along rotational axis:
This subclass is indented under subclass 89. Subject matter
wherein a plurality of said elements are spaced from each
other along the rotational axes of the members.
Subclass:
92
Annular element between and coincident with drive and driven
members:
This subclass is indented under subclass 87. Subject matter
wherein said element comprises a ring-like or apertured
disc-like body having a rotational center which is coincident
with the longitudinal axis of driving and driven members that
are interconnected by said body.
Subclass:
93
Including means to receive radially spaced axially extending
projection on drive and driven members:
This subclass is indented under subclass 92. Subject matter
wherein said body is provided with grooves or apertures for
receiving an axially extending projection carried by each of
said driving and driven members, said projections being
spaced radially from the rotational axis of said members.
Subclass:
94
Laminated element or plural elements abutting or spaced along
rotational axis:
This subclass is indented under subclass 93. Subject matter
wherein said body is formed of a plurality of laminated
nonmetallic parts, or wherein a plurality of said bodies are
distributed along the rotational axis of said members in
either contacting or spaced apart relationship.
Subclass:
95
With disparate spacer between plural separable elements:
This subclass is indented under subclass 94. Subject matter
wherein said bodies are separable and spaced apart axially
from each other, and wherein a separate spacer member formed
of a different material than said bodies is positioned
between said bodies.
Subclass:
96
Laminated element or plural elements abutting or spaced along
axis of rotation:
This subclass is indented under subclass 92. Subject matter
wherein said body is formed of a plurality of nonmetallic
parts laminated together, or wherein a plurality of said
bodies are distributed along the rotational axis of said
members in either contacting or spaced apart relationship.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 94+ for similar structure and further including
means to receive radially spaced axially extending
projections on the drive and driven members.
Subclass:
97
Element is a torsion bar having a longitudinal axis
coincident with the rotational axis:
This subclass is indented under subclass 51. Subject matter
wherein said element is an elongated rod which transmits
torque by rotation about its longitudinal axis which is
coincident with the axes of the members, and wherein
flexibility is obtained by twist of said rod about its
longitudinal axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
86 for a coupling including plural, circumferentially spaced
torsion bars.
Subclass:
98
Element is plate with external edge completely surrounding
rotational axis (e.g., disc):
This subclass is indented under subclass 51. Subject matter
wherein said element connects driving and driven members and
comprises a disc-like body having a center of rotation
coinciding with, and an outer circumferential edge completely
surrounding the rotational axes of the members.
Subclass:
99
Plural axially spaced plates:
This subclass is indented under subclass 98. Subject matter
wherein a plurality of said bodies are spaced apart axially
from each other along the rotational axis.
Subclass:
100
Element is leaf spring:
This subclass is indented under subclass 51. Subject matter
wherein said element is a strip-like body having a
substantially greater length and width when compared to its
thickness dimension.
Subclass:
101
Bowed:
This subclass is indented under subclass 100. Subject matter
wherein said body is curved in the relaxed condition for
deflection along said curve to provide flexure during torque
transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
84 for a coupling including plural bowed leaf springs
circumferentially spaced about the rotational axis.
Subclass:
102
SEPARATE COUPLING DEVICE MOVABLE RADIALLY OF AXES TORQUE
TRANSMITTING MEMBERS TO ACCOMMODATE PARALLEL, MISALIGNED AXES
(E.G., OLDHAM COUPLING):
This subclass is indented under the class definition. A
flexible coupling including a disparate device positioned and
between drive and driven members having rotational axes which
are parallel but out of alignment with each other, said
device being mounted for reciprocable movement in a radial
direction during each revolution of the drive and driven
members.
Subclass:
103
Coupling device includes rolling body for transmitting
torque:
This subclass is indented under subclass 102. Subject matter
wherein torque is transmitted between the drive and driven
members via a spherical or other rotary body, mounted for
rotary motion about its own axis, which is spaced from the
rotational axis of the drive and driven members.
Subclass:
104
Coupling device has aperture or groove for receiving
complementary driving projection on torque transmitting
members:
This subclass is indented under subclass 102. Subject matter
wherein said coupling device includes means defining an
opening or channel into which is positioned a protuberance
carried by the drive or driven member for relative
reciprocable movement of said protuberance in said opening or
channel.
Subclass:
105
Projection-receiving slot extends completely through
thickness dimension of coupler:
This subclass is indented under subclass 104. Subject matter
wherein said device includes oppositely facing surfaces
longitudinally spaced from each other along the rotational
axes of the drive and driven members, and wherein said
opening extends from one of said surfaces through the other
of said surfaces.
Subclass:
106
COUPLING ACCOMMODATES DRIVE BETWEEN MEMBERS HAVING MISALIGNED
OR ANGULARLY RELATED AXES:
This subclass is indented under the class definition. A
flexible coupling including structure which facilitates
transfer of rotary torque between members wherein the
rotational axes of the members are out of alignment with each
other, or wherein the rotational axis of one of the members
defines an angle of less than 180 deg. with the rotational
axis of the other of the members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
19 for coupling structure which facilitates angular
displacement of fluid-conducting rotary shafts.
49 50 and 102+, for particular kinds of couplings
accommodating misalignment or angular relationship between
coupled members.
subclasses 51+ for coupling structure wherein torque is
transmitted via an element made of flexible material and
which may accommodate misaligned or angularly related axes.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclass 15.6 for a power
takeoff from a shaft extension.
180, Motor Vehicles, subclasses 254+ for a vehicle having a
driven and steerable wheel and including a flexible drive
transmitting means for transmitting torque to the wheel.
279, Chucks or Sockets, subclass 16 for a self-centering
chuck or socket.
403, Joints and Connections, subclasses 52+ for a joint
between articulated members other than rotary torque
transmitting members.
433, Dentistry, subclass 112 for a flexible shaft
transmission in dental apparatus.
Subclass:
107
Coupling between wheel and vertically oriented shaft (e.g.,
millstone):
This subclass is indented under subclass 106. Subject matter
wherein one of the members is a shaft having its rotational
axis oriented in a vertical direction, and the other of the
members is a rotary body including a hub portion mounted on
said shaft for facilitating relative angular movement of the
rotational axis of the hub with respect to the rotational
axis of the shaft.
SEE OR SEARCH CLASS:
241, Solid Material Comminution or Disintegration, subclasses
291+ for comminuting structure mounted on a drive shaft
therefor.
Subclass:
108
Wheel mounted on rolling body:
This subclass is indented under subclass 107. Subject matter
wherein balls or rollers support said hub for rotation.
Subclass:
109
Coupling includes relatively movable gear segments:
This subclass is indented under subclass 106. Subject matter
wherein said structure includes relatively movable parts
having teeth interengageable with each other, wherein teeth
on one of the parts sequentially move from engaged to
disengaged positions with respect to cooperating teeth on the
other of said parts when the axes of said members move to
different relative angular positions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
4 for a pivoted weight including a gear segment in a speed
responsive device for adjusting the relative rotational
position of coupled members.
Subclass:
110
Coupling transmits torque via semicylindrical segments
separated by pivot pin (e.g., slipper bearing):
This subclass is indented under subclass 106. Subject matter
wherein said structure includes a pair of spaced
semicylindrical parts interconnected between their ends by a
pivot pin, the semicylindrical parts and pivot pin being
received in a cylindrical aperture of one of said members,
and the other of said members including an axially extending
tongue portion pivotally mounted on said pin.
Subclass:
111
Tripod coupling:
This subclass is indented under subclass 106. Subject matter
wherein said structure includes three pins extending along
its own axis which is angularly related with respect to the
rotational axes of the driving and driven members, and the
axes of the pins being circumferentially spaced 120 deg.
apart about the rotational axes of the driving and driven
members.
Subclass:
112
Coupling transmits torque via radially directed pin:
This subclass is indented under subclass 106. Subject matter
wherein said structure includes an element having a
cylindrical surface wherein the axis of the cylinder extends
in a radial direction perpendicular to the rotational axis of
a part which carries the element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 11+ for a coupling including lubrication means
associated with a radially directed pin.
subclasses 70+ for a coupling including a pin received in
an opening having an annular liner of flexible material.
Subclass:
113
With additional axially spaced torque-transmitting coupling
which facilitates relative movement between members:
This subclass is indented under subclass 112. Subject matter,
and further including an additional coupling spaced from said
element in a direction along the rotational axes of said
coupled members, said additional coupling facilitating
relative movement of said coupled members during torque
transmission.
Subclass:
114
Radially directed pin in each coupling:
This subclass is indented under subclass 113. Subject matter
wherein said additional coupling also includes an element
having a cylindrical surface wherein the axis of the cylinder
extends in a radial direction perpendicular to the axis of
rotation of a part which carries the element.
Subclass:
115
Pin slidable axially in slot:
This subclass is indented under subclass 114. Subject matter
wherein one of said members includes walls defining a passage
extending in the same direction as the rotational axis of
said one of said members, said passageway receiving one of
said elements and permitting relative axial movement of said
one of said elements between said walls.
Subclass:
116
Axially spaced pin-carrying parts interconnected by pivotal
head and socket centering joint:
This subclass is indented under subclass 115. Subject matter
wherein a separate part carries each of said axially spaced
coupling elements, and wherein one of said parts includes
head structure arranged along the axis of rotation of
interconnected members, and said other of said parts includes
socket structure also arranged along the axis of rotation of
said interconnected members, said head being received in said
socket for relative pivotal movement to provide a centering
effect.
Subclass:
117
Plural pins in each coupling with pin ends spaced 90 degrees
apart:
This subclass is indented under subclass 114. Subject matter
wherein each of said parts carries a plurality of cylindrical
elements, the ends of said elements on each part being spaced
90 deg. circumferentially about the rotational axis of the
part.
Subclass:
118
Axially spaced pin-carrying parts interconnected by pivotal
head and socket centering joint:
This subclass is indented under subclass 117. Subject matter
wherein a separate part carries each of said axially spaced
coupling elements, and wherein one of said parts includes
head structure arranged along the axis of rotation of said
interconnected members, and said other of said parts includes
socket structure also arranged along the axis of rotation of
said interconnected members, said head being received in said
socket for relative pivotal movement to provide a centering
effect.
Subclass:
119
Pins in sequential couplings oriented at right angles to each
other:
This subclass is indented under subclass 114. Subject matter
wherein the axis of the cylindrical element in one of said
couplings is oriented 90 deg. with respect to the axis of
said element in said axially spaced coupling.
Subclass:
120
Pin slidable axially in slot:
This subclass is indented under subclass 112. Subject matter
wherein one of said members includes walls defining a passage
extending in the same direction as the rotational axis of
said one of said members, said passageway receiving said
element and permitting relative axial movement of said
element between said walls.
Subclass:
121
Pin carried by intermediate element and slidable axially in
slots in both coupled members:
This subclass is indented under subclass 120. Subject matter
wherein each of said members includes walls defining a
passage extending in the same direction as the rotational
axis of said members, and wherein said element, carried by a
separate part between said members, is positioned for
relative axial movement in the passageways between the wall
of each of said members.
Subclass:
122
Pin carries disparate sleeve engaged with slot walls:
This subclass is indented under subclass 120. Subject matter
wherein a separate member encircles said element and is
movable therewith for engagement with the walls defining said
passageway to guide said element during said relative axial
movement.
Subclass:
123
Sleeve rotatable about pin axis:
This subclass is indented under subclass 122. Subject matter
wherein said separate member is rotatable about the axis of
said element.
Subclass:
124
Sleeve has spherical or semispherical bearing surface:
This subclass is indented under subclass 123. Subject matter
wherein the surface of said member engageable with said walls
is spherical or semispherical in cross-sectional
configuration.
Subclass:
125
Plural pins received in conforming apertures in ring:
This subclass is indented under subclass 112. Subject matter
wherein an annulus having a circumferentially continuous wall
surrounds the axis of rotation of said members, said wall
being provided with a plurality of circumferentially spaced
openings, each of said openings receiving one of a plurality
of circumferentially spaced torque transmitting elements.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 12+ for a coupling wherein a ring encapsulates a
pin, and wherein the ring provides a lubricant passageway.
Subclass:
126
Split ring:
This subclass is indented under subclass 125. Subject matter
wherein said annulus is formed of separate parts, each of
said parts including surface portions configured to provide a
part of said openings.
Subclass:
127
With particular balancing means:
This subclass is indented under subclass 112. Subject matter
wherein significance is attributed to structure for
minimizing vibration imparted to coupled members during
torque transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
180 for a shaft having particular balancing means.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclasses 572+ for a
flywheel or rotor with vibration dampening or balancing
means.
Subclass:
128
With particular bearing cup surrounding pin end:
This subclass is indented under subclass 112. Subject matter
wherein significance is attributed to a separate cap which is
positioned over the end of said element, said cap enclosing
the top and extending at least partially along the
cylindrical side surfaces of said element.
Subclass:
129
Spherical or semispherical cup:
This subclass is indented under subclass 128. Subject matter
wherein the external surface of said cap is spherical or
semispherical in cross-sectional configuration.
Subclass:
130
And disparate device for securing cup to pin or receiver:
This subclass is indented under subclass 128. Subject matter
and further including a separate member for attaching said
cap to said element or to a device which receives said
element.
Subclass:
131
And flexible seal:
This subclass is indented under subclass 128. Subject matter
and further including a seal formed of flexible material,
e.g., a lubricant seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 11+ for a flexible coupling including
lubricating means associated with a pin received in a
conforming aperture.
SEE OR SEARCH CLASS:
277, Seal for a Joint or Juncture, for a generic sealing
means or process, subclasses 549+ for a dynamic
circumferential contact seal for other than a piston having a
peripheral radially sealing flexible projection (e.g., lip
seal, etc.).
Subclass:
132
With particular bearing or bushing mounted on pin:
This subclass is indented under subclass 112. Subject matter
wherein significance is attributed to a separate device
encircling said element for minimizing friction between said
element and a part which pivots relative to said element.
Subclass:
133
With particular flexible seal:
This subclass is indented under subclass 112. Subject matter
wherein significance is attributed to a seal made of flexible
material, e.g., a lubricant seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 7+ for a flexible coupling associated with
particular lubricating means.
131 for a flexible seal associated with a bearing cup on a
pin end.
SEE OR SEARCH CLASS:
277, Seal for a Joint or Juncture, for a generic sealing
means or process, subclasses 549+ for a dynamic,
circumferential, contact seal for other than a piston having
a peripheral radially sealing flexible projection (e.g., lip
seal, etc.).
Subclass:
134
With particular yoke providing pin-receiving aperture:
This subclass is indented under subclass 112. Subject matter
wherein significance is attributed to structure which is
U-shaped or Y-shaped with one leg on each side of the axis of
rotation of said members, the legs including openings for
receiving a plurality of elements.
Subclass:
135
Split yoke:
This subclass is indented under subclass 134. Subject matter
wherein said structure is formed of separable parts.
Subclass:
136
Plural pins carried by intermediate member with pin ends
spaced 90 degrees apart:
This subclass is indented under subclass 112. Subject matter
wherein a plurality of said cylindrical elements are carried
by structure which is mounted between said members, and
wherein the ends of said elements are spaced
circumferentially 90 deg. apart.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 117+ for axially spaced couplings each including
plural pins with pin ends spaced 90 deg. apart.
Subclass:
137
Coupling transmits torque via axially directed pin radially
spaced from rotational axis:
This subclass is indented under subclass 106. Subject matter
wherein said structure includes an element having a
cylindrical surface, and wherein the axis of the cylinder is
radially spaced from the axis of rotation of said members and
extends in a direction parallel to the axis of rotation of
said members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 71+ for a coupling including an axially directed
radially spaced pin received within an opening having a liner
made of flexible material.
Subclass:
138
Particular pivotal mounting for pin:
This subclass is indented under subclass 137. Subject matter
wherein significance is attributed to means for mounting the
element relative to its supporting structure in order to
facilitate pivotal motion of the element.
Subclass:
139
Coupling transmits torque via radially spaced ball:
This subclass is indented under subclass 106. Subject matter
wherein said structure includes a spherical element spaced
radially from the axis of rotation of said members for
transmitting torque between said members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15 for a coupling including lubrication means associated
with a radially spaced ball.
subclasses 35+ for an overload release coupling having
torque transmitted via a ball.
Subclass:
140
With additional axially spaced torque-transmitting coupling
which facilitates relative movement between members:
This subclass is indented under subclass 139. Subject matter
and further including an additional coupling spaced from said
spherical element in a direction along the rotational axes of
said coupled members, said additional coupling facilitating
relative movement of said coupled members during torque
transmission.
Subclass:
141
Ball mounted in groove for relative axial movement with
respect to coupled member:
This subclass is indented under subclass 139. Subject matter
wherein said spherical element is mounted in an axially
extending channel formed in one of said members for relative
axial movement of said element with respect to said one of
said members.
Subclass:
142
Mounted for relative axial movement with respect to both
coupled members:
This subclass is indented under subclass 41. Subject matter
wherein the other of said coupled members also includes means
permitting relative axial movement between said element and
said other of said coupled members.
Subclass:
143
Grooves formed in radially overlapping elements:
This subclass is indented under subclass 142. Subject matter
wherein an internal axially extending channel is formed on
one of said members, and an external axially extending
channel is formed on the other of said members, said internal
channel being located radially outwardly from said external
channel with and said spherical element being positioned for
relative axial movement in each of said channels.
Subclass:
144
Intersecting grooves:
This subclass is indented under subclass 143. Subject matter
wherein the internal channel is out of alignment in an axial
direction with the external channel.
Subclass:
145
With intermediate positioning cage for ball:
This subclass is indented under subclass 143. Subject matter
wherein a separate annular device is positioned intermediate
said channels, said device including openings for receiving
said spherical element.
Subclass:
146
Bottom wall of groove in outer member is parallel to axial
centerline of outer member (e.g., internally grooved
cylinder):
This subclass is indented under subclass 145. Subject matter
wherein said internal channel is defined by opposed side
walls and a top wall, and said top wall extends in a
direction parallel to the axial centerline of the member
having said internal channel formed therein.
Subclass:
147
Torque transmitted via intermediate element:
This subclass is indented under subclass 106. Subject matter
wherein said structure includes means interconnecting driving
and driven members, said means being relatively movable with
respect to each of said members.
Subclass:
148
Element carries or receives hook on opposite ends for
connection to drive and driven members (e.g., link chain):
This subclass is indented under subclass 147. Subject matter
wherein said interconnecting means includes cooperating
parts, at least one of said parts including a portion bent
back upon itself along the rotational axis to provide a loop
which cooperates with a portion on the other of said parts to
accommodate said relative movement during torque
transmission.
(1) Note. The term hook as used herein includes also an
eye.
Subclass:
149
Axially intermeshing teeth:
This subclass is indented under subclass 147. Subject matter
wherein said interconnecting means includes a body having
opposite end faces, each of said end faces having a surface
defined by alternating axially facing ridges and valleys,
said surfaces cooperating with complementary axially facing
surfaces on said members to accommodate said relative
movement during torque transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
16 for a coupling including lubrication means associated
with intermeshing teeth.
73 for coupling structure including axially intermeshing
teeth and having an element formed of flexible material
between the teeth to transmit torque.
157 for other coupling structure including axially
intermeshing teeth.
Subclass:
150
Intermediate element located between overlapping surfaces on
drive and driven members:
This subclass is indented under subclass 147. Subject matter
wherein said interconnecting means includes a body positioned
relative to the driving and driven members in such a manner
that a plane perpendicular to the axis of rotation of said
members intersects surface portions of said body and both of
said members.
Subclass:
151
Intermediate element is externally grooved or ribbed sphere:
This subclass is indented under subclass 150. Subject matter
wherein said body is spherical and includes slots or
projections on its outer surface for cooperating with
complementary surfaces on the driving and driven members.
Subclass:
152
Plural circumferentially spaced intermediate elements:
This subclass is indented under subclass 150. Subject matter
including a plurality of said bodies circumferentially spaced
from each other around the rotational axes of said driving
and driven members.
Subclass:
153
Intermediate element includes internal openings at opposite
ends for receiving axially spaced ends on drive and driven
members:
This subclass is indented under subclass 147. Subject matter
wherein said interconnecting means comprises a body having
opposite ends spaced axially along the axis of rotation, and
wherein each of said ends includes a wall having a
circumferentially continuous surface facing inwardly toward
the rotational axis and configured to receive and mate with a
complementary outwardly facing surface on axially spaced ends
of the driving and driven members.
Subclass:
154
Intermeshing teeth on element and members:
This subclass is indented under subclass 153. Subject matter
wherein said inwardly facing surfaces comprise alternating
ridges and valleys which mesh with complementary alternating
ridges and valleys forming said outwardly facing surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 158+ for other coupling structure including
radially overlapping teeth, and see the search notes
following subclasses 158+.
Subclass:
155
Intermediate member includes external surface at opposite
ends received in complementary openings in axially spaced
ends of driving and driven members:
This subclass is indented under subclass 147. Subject matter
wherein said interconnecting means comprises a body having
opposite ends spaced axially along the axis of rotation, and
wherein each of said ends includes a circumferentially
continuous surface facing outwardly of the rotational axis,
said outwardly facing surface being configured to mate with
complementary inwardly facing surfaces defining openings in
axially spaced ends of the driving and driven members.
Subclass:
156
Intermeshing teeth on element and members:
This subclass is indented under subclass 155. Subject matter
wherein said outwardly facing surfaces comprise alternately
ridges and valleys which nest with complementary alternating
ridges and valleys forming said inwardly facing surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 158+ for other coupling structure including
radially overlapping teeth, and see the search notes
following subclass 158.
Subclass:
157
Torque transmitted via intermeshing teeth on drive and driven
members:
This subclass is indented under subclass 106. Subject matter
wherein a surface on one of said members includes a plurality
of alternating ridges and valleys which mate with a plurality
of alternating ridges and valleys formed on a surface of the
other of said members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
16 for a coupling including lubrication means associated
with intermeshing teeth.
subclasses 73+ and 149, for other coupling structure
including axially intermeshing teeth.
Subclass:
158
Teeth on radially overlapping surfaces:
This subclass is indented under subclass 157. Subject matter
wherein the alternating ridges and valleys on one of said
members are formed on an inwardly facing surface which is
located radially outwardly from the other of said surfaces
having said alternating ridges and valleys.
SEE OR SEARCH THIS CLASS, SUBCLASS:
16 for coupling structure including lubrication means
associated with intermeshing teeth.
subclasses 74+ 154 and 156, for other coupling structure
including radially overlapping intermeshing teeth.
Subclass:
159
Spherical or semispherical surfaces:
This subclass is indented under subclass 158. Subject matter
wherein at least one of said surfaces carrying said
alternating ridges and valleys is spherical or partially
spherical in shape.
Subclass:
160
COUPLING FACILITATES RELATIVE ROTARY DISPLACEMENT BETWEEN
COUPLED MEMBERS:
This subclass is indented under the class definition. A
flexible coupling wherein means is provided to accommodate
relative rotation between coupled members about their
respective rotational axes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 1+ for a coupling including a speed responsive
device to adjust relative rotational position of coupled
members.
subclasses 24+ for a coupling wherein a fluid is used to
affect the movement of coupled members.
subclasses 30+ for a coupling wherein relative rotary
displacement occurs due to overload release.
subclasses 51+ for a coupling facilitating relative rotary
motion wherein torque is transmitted via an element made of
flexible material.
Subclass:
161
Members coupled via axially movable, resiliently biased
intermediate element:
This subclass is indented under subclass 160. Subject matter
wherein torque is transmitted from one member to the other
via a separate body, said body being movable relative to both
of said members along the axis of rotation of the members,
and said body being biased by a spring along said axial
direction.
Subclass:
162
COUPLING FACILITATES RELATIVE AXIAL MOTION BETWEEN COUPLED
MEMBERS:
This subclass is indented under the class definition. A
flexible coupling having means to accommodate relative
movement between the coupled members along their rotational
axes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 18+ for a coupling facilitating relative axial
motion between interconnected shafts in a drill string.
subclasses 24+ for a coupling wherein a fluid is used to
affect movement of coupled members.
subclasses 51+ for a coupling facilitating relative axial
motion wherein torque is transmitted via an element made of
flexible material.
172 for a coupling facilitating relative telescopic movement
between mating housing parts.
SEE OR SEARCH CLASS:
173, Tool Driving or Impacting, subclasses 165+ for means
to drive a tool about an axis and including a relatively
fixed drive for an advancing tool.
384, Bearings, subclasses 43+, 49, 50+ for an antifriction
ball or roller bearing.
Subclass:
163
Coupling between rotary drive table and axially movable drill
string:
This subclass is indented under subclass 162. Subject matter
wherein one of said members is a rotating pipe used in an
earth-boring operation, and the other of said members is a
device positioned around the external circumference of the
pipe for transmitting rotary torque to the pipe.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 18+ for a coupling facilitating relative
movement between interconnected shafts in a drill string.
SEE OR SEARCH CLASS:
173, Tool Driving or Impacting, subclasses 165+ for means
to drive a tool about an axis and including a relatively
fixed drive for an advancing tool.
175, Boring or Penetrating the Earth, subclass 195 for a
rotary drive table for a relatively advancing tool wherein
significance is attributed to table structure.
Subclass:
164
Coupler includes endless belt or chain run engageable with
drill string and movable in direction of axial advance:
This subclass is indented under subclass 163. Subject matter
wherein said coupling means comprises a closed loop belt or
chain entrained for movement around and between spaced
rotational axes, and wherein one run of said belt or chain
engages and moves with said pipe along the rotational axis of
the pipe.
Subclass:
165
Coupler includes antifriction rolling body engageable with
drill string:
This subclass is indented under subclass 163. Subject matter
wherein said coupling means includes a body rotatable about
its own axis and engaging the external periphery of the pipe
for facilitating axial movement of the pipe.
Subclass:
166
With screw device for adjusting radial position of rolling
body:
This subclass is indented under subclass 165. Subject matter
and including an elongated threaded member rotatable about
its own axis and coupled to said rotary body in such a manner
that rotary movement of the threaded member causes linear
movement of said rotary body in a direction toward or away
from the rotational axis of the pipe.
Subclass:
167
Coupler includes antifriction rolling body engageable with
axially moveable member:
This subclass is indented under subclass 162. Subject matter
wherein said coupling means includes a body rotatable about
its own axis and engaging the external periphery of one of
said members for facilitating axial movement of said one of
said members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
165 for an antifriction roller engageable with an axially
movable drill string.
Subclass:
168
Recirculating rolling bodies:
This subclass is indented under subclass 167. Subject matter
wherein a plurality of bodies mounted for movement
individually along a closed loop path are supported for
engagement with said axially movable member along a axial
extent of the member.
Subclass:
169
Including spring to bias member in axial direction:
This subclass is indented under subclass 162. Subject matter
wherein a resilient device is associated with one of said
members to bias said member along the rotational axis of the
member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 20+ for resilient means biasing relatively
movable, fluid conducting rotary shafts in an axial
direction.
36 38+, 43+, and 46+, for axially resilient biasing means
associated with an overload release coupling.
Subclass:
170
HOUSING:
This subclass is indented under the class definition. A
housing as defined in the ....
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 52+ for a housing combined with a torque
transmitting member made of flexible material.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclasses 606+ for a
gear casing.
Subclass:
171
Rigid semispherical surface on one housing part slidably
engaged with surface on mating housing part:
This subclass is indented under subclass 170. Subject matter
wherein said enclosure is formed of a plurality of relatively
movable components, one of said components being rigid and
having a semispherical surface portion which engages a
corresponding surface portion on another of said components.
Subclass:
172
Telescoping cylindrical housing members:
This subclass is indented under subclass 170. Subject matter
wherein said enclosure is formed of a plurality of
cylindrical components, one of said components fitting within
the other of said components, and said components being
mounted with respect to each other for relative movement
along the rotational axis of the shaft or coupling which is
surrounded by said enclosure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 162+ for a coupling facilitating relative axial
motion between torque transmitting members.
Subclass:
173
Flexible housing:
This subclass is indented under subclass 170. Subject matter
wherein the enclosure is formed of a material which is
flexible, per se, or which is configured in such a manner as
to permit flexure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 52+ for a flexible housing combined with a shaft
of flexible material.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclass 18 for motion
transmitting means including a flexible sealing diaphragm
connected to a moving rod and casing; and subclasses 489 and
500.5+ for flexible push-pull motion transmitting means such
as a Bowden Cable.
138, Pipes and Tubular Conduits, subclasses 118+ for a
flexible conduit.
277, Seal for a Joint or Juncture, for a generic sealing
means or process, subclass 504 for a dynamic,
circumferential, contact seal for other than a piston that
accommodates gyratory or oscillatory motion by using a
flexible connection having static contact between the seal
and one of the relatively movable parts or subclasses 634+
for a static, contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable that is a
flexible sleeve, boot, or diaphragm.
Subclass:
174
Helically coiled member:
This subclass is indented under subclass 173. Subject matter
wherein said enclosure includes a helically coiled
component.
Subclass:
175
Corrugated structure:
This subclass is indented under subclass 173. Subject matter
wherein said enclosure has an undulating surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 79+ for a flexible element in the form of a
bellows which transmits torque.
Subclass:
176
Pivotally mounted housing supported for movement between open
and closed positions:
This subclass is indented under subclass 170. Subject matter
wherein said enclosure includes a component which is
pivotally supported about an axis so that said component can
be moved to permit access to the shaft or coupling surrounded
by said enclosure.
Subclass:
177
Separably connected housings for separably connected shafts:
This subclass is indented under subclass 170. Subject matter
comprising separate enclosures for separate shafts and
including means for interconnecting said separate enclosures
when said shafts are interconnected.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 52+ for a housing combined with a shaft of
flexible material and including means for attachment to an
auxiliary housing.
182 for a disparate device for separably connecting one
shaft to another.
Subclass:
178
With rolling body supporting shaft in housing:
This subclass is indented under subclass 170. Subject matter
wherein a body rotatable about its own axis is mounted
between said enclosure and a shaft surrounded by said
enclosure for facilitating rotation of said shaft within said
enclosure.
Subclass:
179
SHAFTING:
This subclass is indented under the class definition. A shaft
as defined in the ....
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 51+ for a shaft made of flexible material or a
shaft including flexible material providing a torque
transmitting coupling between shaft sections.
subclasses 106+ for a shaft made of sections articulated
along the longitudinal extent of the shaft axis.
SEE OR SEARCH CLASS:
295, Railway Wheels and Axles, subclasses 36+ for an axle
of that class.
301, Land Vehicle: Wheels and Axles, subclass 124.1 for an
axle of that class.
440, Marine Propulsion, subclass 83 for shafting with a
screw propeller in marine propulsion apparatus.
Subclass:
180
Particular vibration dampening or balancing structure:
This subclass is indented under subclass 179. Subject matter
wherein significance is attributed to structure associated
with the shaft for the purpose of minimizing unwanted
vibrations during torque transmission or for providing a
desirable balance to the shaft structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
127 for balancing means associated with a trunnion style of
universal joint.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclasses 572+ for a
flywheel or rotor with balancing or vibration dampening
means.
Subclass:
181
Nonmetallic shaft or component:
This subclass is indented under subclass 179. Subject matter
wherein said shaft or a portion thereof is made of a material
other than metal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 51+ for a shaft made of flexible material or
combined with an element made of flexible material to provide
a torque transmitting coupling between shaft sections.
Subclass:
182
With disparate device for coupling shaft to additional shaft
or rotary body:
This subclass is indented under subclass 179. Subject matter
wherein separate means is provided to connect the shaft to
another shaft or to another rotary body.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 52+ for a flexible shaft and housing which may
include means to couple to an auxiliary shaft and housing.
177 for separably connected housings for separably connected
shafts.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclass 15.6 for a power
takeoff from a shaft extension.
403, Joints and Connections, appropriate subclasses for a
joint or connector, per se, and see a reference to the line
in the search class notes following the general definition of
Class 464.
Subclass:
183
Hollow or layered shaft:
This subclass is indented under subclass 179. Subject matter
wherein said shaft is hollow along its length, or wherein the
shaft is formed of plural concentric layers of material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 18+ for a flexible coupling between rotary
fluid-conducting shafts.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, appropriate subclasses for a
hollow pipe.
175, Boring or Penetrating the Earth, subclasses 320+ for a
tool shaft detail, and see the reference to Class 175 in the
search class notes under the class definition of Class 464.
Subclass:
184
GUDGEONS:
This subclass is indented under the class definition. A
gudgeon as defined in the ....
SEE OR SEARCH CLASS:
29, Metal Working, for a roll or roller, per se, having a
generally cylindrical work contacting surface.
160, Flexible or Portable Closure, Partition, or Panel,
subclass 326 for a gudgeon combined with a roller that
accumulates material on a roll.
Subclass:
185
MISCELLANEOUS:
This subclass is indented under the class definition. Subject
matter not provided for in the previous subclasses.
CROSS-REFERENCE ART COLLECTIONS
Subclass:
900
ELECTRICALLY INSULATIVE MEMBER:
Structure wherein significance is attributed to the use of a
material having electrically insulative properties in a shaft
or shaft coupling.
Subclass:
901
RAPID ATTACHMENT OR RELEASE:
Structure wherein significance is attributed to means which
enables coupled members to be quickly connected or
disconnected.
Subclass:
902
PARTICULAR MATERIAL:
Structure wherein significance is attributed to the
particular composition of material used in making a structure
of this class.
Subclass:
903
Nonmetal:
This subclass is indented under subclass 902. Subject matter
wherein the composition includes a nonmetallic component.
Subclass:
904
HOMOKINETIC COUPLING:
A flexible coupling wherein significance is attributed to
structure that obtains a uniform angular velocity between
input and output members.
Subclass:
905
Torque transmitted via radially extending pin:
This subclass is indented under subclass 904. Subject matter
wherein torque is transmitted by a pin which extends radially
outwardly of the rotational axes of the coupled members.
Subclass:
906
Torque transmitted via radially spaced balls:
This subclass is indented under subclass 904. Subject matter
wherein torque is transmitted by spherical elements spaced
radially outwardly of the rotational axis of the coupled
members.
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