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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Electronic Products Branch)
Class 187
ELEVATOR, INDUSTRIAL LIFT TRUCK, OR STATIONARY LIFT FOR
VEHICLE
Class Definition:
This class is the locus for apparatus (i.e., elevator) for
shifting a discrete load, in its entirety, from an entry
level to a vertically spaced exit level along a fixed path
when the apparatus includes (1) a reciprocating,
load-underlying, support surface (e.g., car), (2) rigid or
semirigid means for contacting and limiting the travel of the
load support surface to the fixed vertical path, and (3)
either (a) drive means* (e.g., fluid motor, manually operated
linkage) for transmitting to the load support surface the
force necessary to shift the load between the levels or (b)
motion resisting means (e.g., counterweight) for slowing the
travel of the load supporting surface when moving from a
higher load entry level to a lower load exit level.
In addition, this class is the locus for a fixedly mounted
apparatus (i.e., vehicle lift) which elevates a discrete
vehicle, in its entirety, from a lower entrance and exit
level to a significantly higher upper level where the vehicle
is intended to be repaired or inspected when the apparatus
includes both (1) a vertically reciprocating,
vehicle-underlying support surface and (2) drive-means* for
transmitting to the support surface the force necessary for
it to elevate the vehicle.
Further, this class is the locus for a mobile wheeled or
tracked apparatus (e.g., forklift) which travels to, picks
up, and shifts a discrete load, in its entirety, from one
level to another vertically spaced level and then carries the
load, while still fully supported thereby, a short horizontal
distance (e.g, length of a warehouse) to a load discharge
point; when the apparatus includes (1) a vertically
reciprocating load support surface (e.g., forks) which
travels only along a confined linear path and (2)
drive-means* for transmitting to the support surface the
force necessary for it to elevate the load.
This class also provides for a subcombination of one of the
above types of apparatus when (1) no specific locus for the
subcombination exists in another class and (2) the
subcombination is limited to use with the above types of
apparatus by a structural modification.
Finally, this class also provides for an ancillary device
(e.g., call registration system) which is (1) used
exclusively with and (2) has its operation either influencing
or being influenced by the operation of one of the above
types of apparatus when no particular locus exists for the
device in another class.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
Elevating apparatus otherwise proper for this class which is
either (a) specially modified for use with or within another
disparate apparatus (e.g., machine tool, furnace), (b) in
combination with structure for treating the discrete load or
vehicle in some manner (e.g., work cutting) or (c) claimed in
combination with specific details of a distinct disparate
apparatus (e.g., endless feeding belt) or distinct structure
(e.g., rack) is classified in other classes (e.g., Class 414,
subclass 564, Class 414, subclasses 592+).
Elevating apparatus which is constructed in such a manner
that the support surface for the load or vehicle is
inherently self-charged or self-discharged during movement
along its fixed generally vertical path of travel is excluded
from this class and is classified in other handling classes
(e.g., Class 414, subclasses 595+).
An apparatus including a load or vehicle support surface
which travels in a circuit around a fixed pathway having both
a vertical and a horizontal segment is excluded from this
class and is found in other handling classes (e.g., Class
198, subclasses 321+).
The load or vehicle support surface of an apparatus proper
for this class is intended to support the load or vehicle
only for a short period of time during handling and is not
intended for either (a) supporting an article in a nonuse
storage location (e.g., Class 312, subclass 247 vertically
moveable cabinet) (b) supporting a useable machine or tool
(e.g., Class 248, subclasses 646+ movable machinery support)
or (c) moving one portion of a machine or article relative to
another portion thereof (e.g., an operator). In the
situation when a vehicle is supported, the surface may also
support the vehicle during the time necessary for its repair
or inspection.
The line between an elevator proper for this class (187) and
a jack proper for Class 254, Implements or Apparatus for
Applying Pushing or Pulling Force is as follows:
(A) Class 187 provides for elevating apparatus which (1)
lifts the entire load a significant distance, (2) is either
stationary, nonmanually transported as a unit between use
locations, or supported, at least in part, by a building it
services in use, and (3) has a load supporting surface
intended to be guided along or confined to (e.g., located
within a shaft) a linear path; and
(B) Class 254 provides for "jacking" apparatus which either
(1) elevates only one portion of the load, (2) is manually
pulled as an assembled self supporting unit between use
locations or carried and is also positioned under the load,
or (3) is stationary mounted at a particular location and is
capable of lifting the load only a relatively short distance
(e.g., far less than the distance between the floor and
ceiling of a room).
The discrete load proper for this class (187) is either (a)
an animal, (b) an article, (c) a unitized bulk material
(e.g., cotton bail, ice block) or (d) a group or mix thereof
moved as a unit between levels.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
52, Static Structures, (e.g., Buildings), subclass 30 for an
elevator combined with building structure other than that
necessary to support or guide the elevator.
104, Railways, 35 for structure shifting railroad vehicles
through use of a turntable and subclasses 127+ for an
elevator having its operation interconnected with that of an
elevated railway.
108, Horizontally Supported Planar Surfaces, 20 for a power
driven surface and subclasses 144.11+ for a vertically
adjustable surface which supports a load (e.g., lowers as
articles are being stacked) but does not transport it as a
unit between vertical locations.
182, Fire Escape, Ladder, or Scaffold, 141 for a platform
having elevating or lowering means which is used to either
escape a fire or in the maintenance of a building.
186, Merchandising, 22 for an elevator or drop used to
service a store and subclasses 47 and 51 for an elevator used
in servicing a dining room.
212, Traversing Hoists, subclass 319 for a traveling
bridge-type crane having a load engager (other than a
platform, cage, or similar device) which is mounted for
guided vertical movement toward and away from the bridge.
244, Aeronautics, 137.1 for means (e.g., elevator ) to load
cargo or a passenger onto an aircraft.
312, Supports: Cabinet Structure, subclass 247 for a
vertically movable cabinet.
318, Electricity: Motive Power Systems, appropriate
subclasses for electric motor controls, per se.
405, Hydraulic and Earth Engineering, subclass 3 for means
for lifting a marine vessel during portage, launching, or
removing.
414, Material or Article Handling, as following subclasses:
246, 247+, 249+, 260, and 264 for a vertically moving vehicle
carrier, which carrier is adapted for charging or discharging
a facility for the parking of wheeled vehicles; subclass
281, for a means for charging or discharging plural, static
structures, and wherein the means includes a portable
elevating device having a load sustaining surface; subclasses
364+, for the combination of a pivotably or tiltably movable
structure for supporting a wheeled, load-transporting type
vehicle and reorienting the vehicle into a load-releasing
attitude, and the vehicle being unloaded thereby, and wherein
the axis of pivot or tilt of the structure is vertically
shiftable (e.g., by means in the nature of an elevator or
hoist); subclasses 422+, for a receptacle emptying device of
an elevator type; subclasses 427, for a wheel and wheel type
article handler and transporter having a wheel engaging means
of an elevator type; subclasses 441, for a motion responsive
load handler and transporter wherein the handler is operated
by a ground-engaging wheel and is guided for rectilinear
movement in a vertical or inclined path; subclasses 458+, for
a vehicle having load handling means in the nature of spaced,
shelf-like load engaging portions which portions engage the
load from opposite sides and elevate it for transport;
subclasses 460+, for a vehicle which straddles a load and
elevates it onto load supporting structure; subclasses 471,
for a self-loading or unloading vehicle having a load
receiving portion which is pivotable relative to the
horizontal, and wherein means is provided for also raising or
lowering the portion and its axis of pivot; subclasses 495+,
for a self-loading or unloading vehicle having a load
receiving portion which is movable in a vertical or inclined
path; subclasses 540+, for a self-loading or unloading
vehicle having a load handling means which raises or lowers a
load in a path which includes vertical rectilinear movement;
subclasses 564, for a combination of carriers, at least one
of which is an elevator or hoist and another is an endless or
rotary carrier; subclasses 589+, for a load support which
moves linearly in a vertical direction and has additional
movement for aligning and mounting its load; and subclasses
592+, for the combination of an elevator or hoist and a
loading or unloading means therefor; subclasses
452, Butchering, subclass 178 for an elevator combined with
or having particular structure limiting it to use with,
butchering means.
472, Amusement Devices, appropriate subclasses, particularly
subclass 2, for an amusement device which lifts an individual
during a ride.
GLOSSARY:
Repetitive terms used in the titles or definitions of the
class definition and its indented subclasses in a special or
limited sense are set forth below with the meaning each is to
have. For economy of space, an asterisk (*) following a word
located in the definition or notes indicates that reference
should be made to this Glossary for the specific meaning
thereof. In addition, an asterisk (*) following a hyphenated
phase (e.g., drive-means*) indicates that the entire
hyphenated phase has been defined in this Glossary.
CABLE*
A flaccid, elongated, flexible element which can transmit
force only when under tension (e.g., rope, wire, chain).
CONTROL*
Means for regulating the operation of a separate and distinct
force generating, transmitting, or retarding device (e.g.,
motor, drive-means*, brake) which moves or stops the movement
of a relatively movable component of apparatus proper for
this class (e.g., elevator car), and includes both (1) an
information input component (e.g., sensor, information
storage means, manual push button) and (2) a distinct
component which effects the operation of the force
generating, transmitting, or retarding device in a particular
manner based on the input information.
DRIVE-MEANS*
Means for supplying a motive force to an element to be moved
which includes both force generating means (e.g., motor) and
structural linkage (e.g., gears) needed to transmit the force
from the generating means to the element.
LANDING*
An in situ floor within a structure (e.g., building) located
adjacent to an elevator shaft* and to or from which a load
(e.g., passenger, cargo) transfers during the charging or
discharging of the load-underlying support surface of an
elevator.
SHAFT*
A long, narrow, in situ passageway within a structure (e.g.,
building, ship, mine) which defines the fixed path between
the vertically spaced load entrance and exit levels traveled
by the load-underlying support surface of an elevator.
notorieties
SUBCLASSES
Subclass:
200
STAIRWAY ASSIST FOR INDIVIDUAL OR MINOR BARRIER (E.G., CURB)
LIFT FOR IMPAIRED INDIVIDUAL:
This subclass is indented under the class definition.
Subject matter either (1) intended to carry only a single
person and located on or very near to a flight of stairs for
use by the person as (a) an alternative to or (b) in
conjunction with the stairs or (2) located adjacent a small
obstruction (e.g., loading dock) which would be no serious
obstacle to a healthy person and having a specific feature
(e.g., modified access, wheelchair guides) adapting it to
carry a person having some physical problem which prohibits
or restricts the ability of the person to travel past the
small obstruction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
901 for an elevator control modified for use by a disabled
individual.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 564.1 for means for
lifting a person vertically into or out of a tub.
5, Beds, 83.1 for hoisting means for lifting a person into
or out of a bed.
198, Conveyors: Power-Driven, 321 for a conveyor or an
accessory therefor with specialized structure for conveying
people.
414, Material or Article Handling, 467 and 921 for vehicles
having means to load or unload an individual in a
wheelchair.
Subclass:
201
Mounted adjacent stairway for travel parallel thereto:
This subclass is indented under subclass 200. Subject matter
which is located near a flight of stairs and wherein the
rigid or semirigid means for limiting the path of travel of
its load-underlying support surface restricts the path to a
direction parallel to the incline of the flight of stairs.
SEE OR SEARCH THIS CLASS, SUBCLASS:
245 for an inclined elevator of general utility.
SEE OR SEARCH CLASS:
414, Material or Article Handling, 595 for an inclined track
elevator with means which loads or unloads it.
Subclass:
202
Having specific means contacting or on load support for
stopping thereof:
This subclass is indented under subclass 201. Subject matter
having a particular structural aspect (e.g., operator) of
braking or catching means mounted on or engaging the
load-underlying support surface and selectively holding the
load-underlying support surface at different locations along
its path of travel detailed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
351 for means for stopping a load support of general
utility.
Subclass:
203
STATIONARY LIFT FOR ROADWAY VEHICLE OR REQUIRED COMPONENT
THEREOF:
This subclass is indented under the class definition.
Subject matter consisting of fixedly mounted apparatus, or a
specified component thereof (i.e., drive-means*,
vehicle-underlying support surface component) not provided
for in another class, for elevating a discrete wheeled
highway vehicle, in its entirety, from a lower entrance and
exit level to a significantly higher upper level where the
vehicle is intended to be repaired or inspected.
(1) Note. The line between a vehicle lift proper for this
subclass and its indented subclasses and one proper for Class
254, Implements or Apparatus for Applying Pushing or Pulling
Force is as follows:
This subclass and its indents provide for vehicle elevating
apparatus which (a) has a vehicle supporting surface entirely
separable from the vehicle, (b) lifts the entire vehicle a
significant distance along a generally rectilinear path, (c)
maintains its vehicle underlying support surface in a
substantially level attitude relative to ground, and (d) is
stationarily mounted at a particular location; and
(2) Class 254 provides for vehicle elevating apparatus
otherwise proper therefor which either (a) elevates only one
portion of the vehicle at a time, (b) is manually carried or
moved as an assembled, self supporting unit between use
locations and positioned under the vehicle, (c) lifts the
entire vehicle only a relatively short distance (e.g., a
small lever arm lifting less than the height of the vehicle)
or (d) is attached to and travels with the vehicle.
SEE OR SEARCH CLASS:
104, Railways, subclass 44 for an automobile turntable
combined with an elevator, and subclasses 127+ for a railway
vehicle elevator.
137, Fluid Handling, subclass 234.6 for a vehicle lift,
vehicle guide, or vehicle support combined with a fluid
supply means for the vehicle.
184, Lubrication, subclass 1.5 for means used in emptying or
filling a vehicle's crank case.
254, Implements or Apparatus for Applying Pushing or Pulling
Force, 2, 88, 89+, 94, 418+, and Dig. 9 for apparatus for
lifting an entire vehicle a short distance.
414, Material or Article Handling, 233 for a parking
facility including one or more movable sites (i.e., a vehicle
is transported by and also stored on the load support
surface), and subclass 678 for a device having a support for
a boat or land vehicle and means to lift and tilt the
support.
Subclass:
204
With distinct jack on vehicle support:
This subclass is indented under subclass 203. Subject matter
provided with means having its own drive-means* and mounted
on, or adjacent to and traveling with, the vehicle-underlying
support surface of the elevating apparatus for lifting one
portion of a vehicle while the vehicle is located on the
support surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
220 for axle or undercarriage type support structure which
normally travels with distinct wheel supporting trackways,
but is selectively sustained by a prop at an elevated
position to remove the vehicle from the trackways when the
trackways are lowered relative thereto.
Subclass:
205
With floor pit opening for support and safety cover
therefor:
This subclass is indented under subclass 203. Subject matter
provided with both a hole in the floor surrounding the
elevating apparatus which allows the vehicle-underlying
support surface to be flush with the floor when not elevated
and means which extends over at least a portion of the hole
when the vehicle-underlying support surface is elevated to
prevent an object from falling into the hole.
Subclass:
206
With safety prop or braking rod for support:
This subclass is indented under subclass 203. Subject matter
provided with an elongated rigid member which (a) is attached
to and extends from the elevated vehicle-underlying support
surface to the floor, (b) is distinct from the drive-means*
for the support surface, and (c) holds the support surface in
its elevated position if the drive-means* therefor fails by
pushing against the surface of the floor or coacting with
means for stopping (e.g., a stationary catch) its motion.
Subclass:
207
Having position lock for engaging sustaining drive means or
guide means of support:
This subclass is indented under subclass 203. Subject matter
having a catch or brake which engages either (a) a portion of
the drive-means* directly supporting (e.g., piston of fluid
ram) the vehicle-underlying support surface or (b) travel
directing structure (e.g., guide shoe) for the
vehicle-underlying support surface to retain at a particular
position, or slow the travel of, the vehicle-underlying
support surface.
Subclass:
208
Ratchet bar and latching pawl-type lock:
This subclass is indented under subclass 207. Subject matter
wherein the vehicle-underlying support surface is retained at
a particular position by a catch engaging a corresponding
surface configuration (e.g., tooth) on an elongated member
and wherein the catch, when not engaged, moves vertically
relative to the elongated member when the vehicle-underlying
support surface is elevated or lowered.
Subclass:
209
With safety cutoff for drive means:
This subclass is indented under subclass 203. Subject matter
provided with means (e.g., limit switch) which turns off or
disconnects the vehicle-underlying support surface
drive-means* to protect the user of, or vehicle on, the
vehicle elevating apparatus when the apparatus is either
improperly used (e.g., overloaded) or a potentially injurious
condition exist.
SEE OR SEARCH THIS CLASS, SUBCLASS:
276 for a control* for the drive means of an elevator car.
Subclass:
210
Having specific drive means for support:
This subclass is indented under subclass 203. Subject matter
having a particular structural aspect of drive-means* (e.g.,
cable drum) for transmitting to the vehicle-underlying
support surface the force necessary to shift the vehicle
between its upper and lower levels detailed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
250 for specific drive means for an elevator car.
Subclass:
211
Includes plural sustaining levers (e.g., scissored levers):
This subclass is indented under subclass 210. Drive-means*
including two distinct elongated members which are (a)
located between the vehicle-underlying support surface and a
supporting floor and (b) mounted in a manner allowing them to
each swing vertically in conjunction with each other and to
hold up the vehicle while restricting its movement to a
generally linear vertical path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
269 for an elevator car supported by scissored levers in the
drive means.
SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling
Force, subclass 91 for a swinging platform which elevates an
entire vehicle.
Subclass:
212
Powered by vehicle being lifted:
This subclass is indented under subclass 210. Drive-means*
having as its source of power either the motor, drive train,
or road wheel of a vehicle located on the vehicle-underlying
support surface of the apparatus.
SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling
Force, subclass 91, 94, and 422 and digest 9 for vehicle
lifting apparatus powered by either the impact of, the motion
of, or a driven part of a supported vehicle.
Subclass:
213
Includes driven sustaining columns on opposite sides of
support:
This subclass is indented under subclass 210. Drive-means*
including two distinct elongated structures positioned on
different sides of a common vehicle-underlying support
surface and directly across from each other which transmit
elevating force to, and together hold up, the
vehicle-underlying support surface.
Subclass:
214
Having threaded rider and mating screw:
This subclass is indented under subclass 213. Drive-means*
wherein one of the force transmitting elongated structures
includes both (a) an element attached to the
vehicle-underlying support surface which has an aperture
therein with an internally facing threaded tooth and (b) a
cylindrical rod passing through the aperture which has a
tooth on its outer surface threaded around the longitudinal
axis of the rod, mating with the tooth of the aperture
element, and rotating relative thereto when the
vehicle-underlying support surface is elevated or lowered.
SEE OR SEARCH THIS CLASS, SUBCLASS:
267 for an elevator car supported by threaded rider and
screw drive means.
Subclass:
215
Includes sustaining fluid ram:
This subclass is indented under subclass 210. Drive-means*
including a vertically extending, fluid powered mechanism
which (a) is attached to the vehicle-underlying support
surface and (b) has two concentric, telescoping components
bearing a portion of the weight of the vehicle-underlying
support surface when it travels vertically.
(1) Note. The line between a stationary vehicle lift drive
proper for this class (187) and a linear fluid motor and its
control proper for Class 91, Motors: Expansible Chamber Type,
or a linear fluid motor proper for Class 92, Expansible
Chamber Devices, is as follows:
(1) Class 187 provides for lifting apparatus which claims
more than a named stationary lift for a vehicle moving a
vehicle in its entirety between vertically spaced levels by a
linear fluid motor and additional structure which is not
necessary to the internal fluid drive of the linear fluid
motor (e.g., external load support guide structure,
particular load-underlying support surface structure,
particular lifting apparatus controls (e.g., rope
controls)),
(2) Class 91 provides for linear fluid motors and their
controls moving a load between spaced positions and claiming
a named load supporting surface, and
(3) Class 92 provides for linear fluid motors moving a load
between spaced positions and claiming a named load supporting
surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
272 for an elevator car with a fluid supporting ram in its
drive means.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, appropriate subclasses,
for fluid pressure operated linear motors and their
controls.
92, Expansible Chamber Devices, appropriate subclasses, for
fluid pressure operated linear motors.
254, Implements or Apparatus for Applying Pushing or Pulling
Force, subclass 93 for fluid pressure powered apparatus for
lifting a portion of a vehicle a short distance.
Subclass:
216
Having specific vehicle support structure (e.g., trackways):
This subclass is indented under subclass 203. Subject matter
having a particular aspect of the vehicle-underlying support
surface of the apparatus detailed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
403 for an elevator having a load-underlying support surface
with means to engage the wheels of a carried vehicle.
SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling
Force, 133 for special engaging structure on a jack.
Subclass:
217
With movable stop engaging vehicle wheel:
This subclass is indented under subclass 216.
Vehicle-underlying support surface provided with structure
(e.g., chock) shiftable from a position where it does not
interfere with the movement of the vehicle wheel onto the
support surface to a position where it contacts the wheel and
prevents movement of the vehicle off of the support surface
in one direction.
Subclass:
218
Includes portion positioned or shaped to engage axle or
undercarriage:
This subclass is indented under subclass 216.
Vehicle-underlying support surface including a component or
section particularly arranged or contoured to contact the
axle or supporting framework of the vehicle and transmit
lifting force thereto.
Subclass:
219
Portion adjusts to plural use positions:
This subclass is indented under subclass 218.
Vehicle-underlying support surface having an attached contact
component or section shiftable from one location to another
to contact either (a) different portions of the supporting
framework or axle of the same vehicle or (b) the axles or
supporting frameworks of vehicles having different
configurations.
Subclass:
220
Portion moves from use to nonuse configuration (e.g.,
alternate supports):
This subclass is indented under subclass 218.
Vehicle-underlying support surface having at least one
attached contact component or section which shifts from (a) a
location where it does not contact the vehicle axle or
framework when the vehicle elevating apparatus is in
operation to (b) another location where it will contact the
vehicle axle or framework when the vehicle elevating
apparatus is in operation.
Subclass:
221
Includes auxiliary or adjustably spaced trackway:
Vehicle-underlying support surface under 216 including a
component which (1) is designed to direct a wheel of a
vehicle driving onto the support surface and (2) is either
(a) located where it does not contact and direct a wheel
every time the vehicle elevating apparatus is in operation
(e.g., one of plural alternatively useable trackways) or (b)
shiftable toward or away from a similar wheel directing
component during different vehicle elevating operations for
vehicles having a different gauge or wheel arrangement.
Subclass:
222
INDUSTRIAL LIFT TRUCK OR REQUIRED COMPONENT THEREOF (E.G.,
FORKLIFT):
This subclass is indented under the class definition.
Subject matter consisting of a mobile wheeled or tracked
apparatus (e.g., forklift) or a specified component thereof
(i.e., drive-means*, load support surface, guides for
surface) not provided for in another class, which travels to,
picks up, and shifts a discrete load, in its entirety, from
one level to another vertically spaced level and then carries
the load while still fully supported on the surface a short
horizontal distance (e.g., the length of a warehouse) to a
load discharge point.
(1) Note. The line between a mobile lift truck proper for
this and the indented subclasses and one proper for Class
254, Implements or Apparatus for Applying Pushing or Pulling
Force is as follows: (1) This subclass and its indents
provide for a mobile wheeled or track guided truck which both
(a) selfloads, supports, and travels with a load between
horizontally spaced locations and (b) is capable of
vertically moving this load along a fixed path for a
significant distance and unloading it at a different,
vertically spaced level; and (2) Class 254 provides for a
mobile lift truck which either (a) elevates only one portion
of the load or (b) lifts the entire load only a relatively
short distance (e.g., less than the height of the load) and
then returns it to its original level when unloading.
(2) Note. Wheeled or tracked apparatus otherwise proper for
this and the indented subclasses is excluded therefrom when
the load support surface is mounted for movement in an
additional direction (e.g., tilted) and is found in Class 414
subclasses 629, 631+, 641+, and 663+ even when the movement
is not utilized to load or unload the surface (e.g., merely
stabilizes the load).
SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling
Force, 2 for a jack-type hoist truck.
414, Material or Article Handling, subclass 629, 631+, 641+,
663+, and 914 for portable elevators having an additional
handling feature (e.g., tilting vertical guide).
Subclass:
223
Having safety cutoff control:
This subclass is indented under subclass 222. Mobile wheeled
or tracked apparatus having a control* which determines when
an unsafe operating condition has occurred and responds to
the condition by regulating or stopping the operation of the
apparatus or load support surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
209 for a stationary lift for a roadway vehicle having
safety cutoff means for its drive-means*.
SEE OR SEARCH CLASS:
701, Data Processing: Vehicles, Navigation, and Relative
Location, subclass 50 for operation controlling means, per
se, of this type for a forklift when the algorithm utilized
is not peculiar solely to use with a forklift.
Subclass:
224
Having control for load support drive-means:
This subclass is indented under subclass 222. Mobile wheeled
or tracked apparatus having a control* for regulating the
operation of the drive-means* for the load support surface of
the apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
209 for a stationary lift for a roadway vehicle having a
safety cutoff means for its drive-means*.
276 for a control* regulating the power source of
drive-means* for an elevator.
SEE OR SEARCH CLASS:
701, Data Processing: Vehicles, Navigation, and Relative
Location, subclass 50 for an operation controlling means for
a forklift utilizing an algorithm not peculiar solely to use
with a forklift.
Subclass:
225
Having foldable vertical guide:
This subclass is indented under subclass 222. Mobile wheeled
or tracked apparatus provided with rigid, vertically
extending, elongated structure for limiting the load support
surface to travel along its confined linear path, the
structure having two elongated vertical segments attached to
one another in a manner allowing one segment of the elongated
structure to bend over and lie adjacent to the other
segment.
Subclass:
226
Having extensible vertical guide for load support:
This subclass is indented under subclass 222. Mobile wheeled
or tracked apparatus provided with rigid, vertically
extending, elongated structure for limiting the load support
surface to travel along its confined linear path, the
structure having two elongated vertical sections attached to
one another in a manner allowing one section to move
vertically relative to the other section to lengthen or
shorten the height of the elongated structure.
Subclass:
227
Guide or drive-means* therefor positioned to enhance operator
visibility:
This subclass is indented under subclass 226. Mobile wheeled
or tracked apparatus in which either (a) the structure for
confining the load support surface to a linear path, (b) the
drive-means* for the movable section thereof, or (c) the
drive-means* for the load support surface is positioned,
relative to a work station for the human operator of the
apparatus, in a manner designed to avoid obstructing the view
of the operator when using the apparatus.
Subclass:
228
And guiding means for fluid drive line:
This subclass is indented under subclass 226. Mobile wheeled
or tracked apparatus also having directing means for limiting
the path traveled by a pipe which is shifted when the
sections of the elongated structure are moved relative to
each other and which carries fluid to drive-means* for either
(a) the movable section of the elongated structure or (b) the
load support surface of the apparatus.
Subclass:
229
Extended by single fluid ram:
This subclass is indented under subclass 226. Mobile wheeled
or tracked apparatus wherein the two sections of the
vertically extending, elongated structure are moved relative
to each other by a single, fluid powered mechanism having two
telescopic concentric components.
Subclass:
230
Specific vertical guide:
This subclass is indented under subclass 226. Mobile wheeled
or tracked apparatus in which one particular aspect (e.g.,
cross section) of the vertically extending elongated
structure is detailed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
238 for a nonextensible vertical guide for the load support
surface of a lift truck.
Subclass:
231
Having structure allowing propulsion or steering by walking
attendant:
This subclass is indented under subclass 222. Mobile wheeled
or tracked apparatus having hand engaged structure used to
propel or to direct the course of the mobile apparatus which
is positioned in a manner designed to allow a human operator
to walk while propelling or directing the apparatus when it
travels between horizontally spaced locations.
Subclass:
232
With stabilizing outrigger:
This subclass is indented under subclass 231. Mobile wheeled
or tracked apparatus provided with structure extending
outwardly from the main track engaging or wheeled supporting
base of the mobile apparatus which prevents the mobile
apparatus from toppling over or overturning when in use.
Subclass:
233
Having specific drive-means for load support:
This subclass is indented under subclass 222. Mobile wheeled
or tracked apparatus having a particular aspect of
drive-means* (e.g., cable drum) for transmitting to the load
support surface of the apparatus the force necessary to shift
it along its confined linear path detailed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
250 for specific load support drive-means* for an elevator.
Subclass:
234
Including fluid ram:
This subclass is indented under subclass 233. Mobile wheeled
or tracked apparatus wherein the drive-means* includes a
fluid powered mechanism having two telescopic, concentric
components which mechanism is directly attached or linked to
the load support surface of the apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
272 for a fluid ram type drive-means* for an elevator car.
Subclass:
235
Including cable accumulating-type drum:
This subclass is indented under subclass 233. Mobile wheeled
or tracked apparatus wherein the drive-means* includes both
(1a a cable* directly attached to the load support surface of
the apparatus and (b) a drum turned about its central axis by
the source of power and having a perimeter about which the
cable* is wound and collected when the drum is turned to
apply a pulling force to the load support surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
261 for a drive-means* for an elevator car which includes a
cable accumulating type drum.
Subclass:
236
Including gear and mating rack or chain:
Mobile wheeled or tracked apparatus under 233 wherein the
drive-means* includes both (a) a toothed gear rotatably
attached to the load support surface or to a relatively
stationary component of the mobile apparatus and (b) a bar or
chain which is mounted along the confined path of travel of
the load support surface or attached to the load support
surface and which has a row of complementary teeth or
apertures mating with teeth of the gear.
SEE OR SEARCH THIS CLASS, SUBCLASS:
270 for drive-means* for an elevator car which includes a
gear and mating rack or chain.
Subclass:
237
Having specific load support structure (e.g., forks):
This subclass is indented under subclass 222. Mobile wheeled
or tracked apparatus having at least one particular aspect of
the load support surface detailed.
(1) Note. The line between an elevator or industrial lift
truck proper for this and the indented subclasses and one
proper for Class 414, Material or Article Handling, is as
follows:
(a) This subclass and its indents provide for an elevator or
industrial lift truck or component thereof when the load is
shifted in its entirety in a primary lifting direction from
one level to another vertically spaced level and may
additionally include (1) mere pivoting or tilting of the load
supporting structure for detachment or storage or (2)
retaining of a received load on the support surface; and
(b) Class 414 provides for load engaging structure in which
the load support surface travels in a generally vertical
primary lift direction and (1) is mounted for movement in a
direction other than the primary lift direction (e.g.,
tilting) or (2) has an additional load handling structure
(e.g., conveyor) or (3) is constructed in such a manner that
the load support surface is inherently self-charged or
self-discharged along the primary lift direction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
401 for specific load support structure for an elevator.
SEE OR SEARCH CLASS:
414, Material or Article Handling, subclass 785 for a
load-underlying support surface for an elevator or industrial
lift truck having an additional load handling feature.
Subclass:
238
Having specific guide means for load support:
This subclass is indented under subclass 222. Mobile wheeled
or tracked apparatus having one particular aspect of means
which contacts or is on the load support surface of the
apparatus for limiting the surface to vertical travel along
its confined linear path detailed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
230 for an extensible vertical guide for the support surface
of a lift truck.
Subclass:
239
MOUNTED ON EXTERIOR OF BUILDING:
This subclass is indented under the class definition.
Subject matter wherein (a) the rigid or semirigid means for
limiting the path of travel of the load-underlying support
surface of an elevator is attached to or formed in the outer
surface of a wall forming the perimeter of a building and (b)
the load-underlying support surface is completely located, at
all times, beyond the perimeter of the building.
SEE OR SEARCH CLASS:
182, Fire Escape, Ladder, or Scaffold, 141 for a platform
having elevating or lowering means and subclass 37 for a
similar platform which also traverses horizontally along a
track.
Subclass:
240
TRANSPORTABLE ELEVATOR:
This subclass is indented under the class definition.
Subject matter constructed in a manner which makes it easily
movable, as a unit, from one location where it functions as
an elevator to another location where it again functions as
an elevator.
(1) Note. The line between a portable elevator proper for
Class 254, Implements or Apparatus for Applying Pushing or
Pulling Force, is as follows: (a) Class 187 provides for
transportable elevating apparatus which (a) lifts the entire
load a significant distance between a loading and unloading
position (e.g., greater than the height of a load being
lifted), (b) is transported between use locations in an
unloaded condition and (c) has a load supporting surface
intended to be guided along or confined to (e.g., located
within a shaft) a linear path, and (b) Class 254 provides for
portable "jacking" apparatus which is movable between
locations and either (a) elevates only one portion of the
load, or (b) is manually transported as an assembled self
supporting unit between use locations or (c) is carried and
positioned under the load and is capable of lifting the load
only a relatively short distance (e.g., less than the
distance between the floor and ceiling of a room).
SEE OR SEARCH THIS CLASS, SUBCLASS:
222 for an industrial lift truck.
SEE OR SEARCH CLASS:
182, Fire Escape, Ladder, or Scaffold, appropriate subclasses
especially 141 for a portable platform where a workman only
does work while supported thereon (e.g., sandblasting, window
washing, etc.)
254, Implements or Apparatus for Applying Pushing or Pulling
Force, appropriate subclasses, for portable "jacking"
apparatus lifting only a portion of a load or lifting a load
a short distance.
414, Material or Article Handling, 495 for a self-loading
vehicle with an elevating load body and subclasses 540+ for a
self-loading vehicle loaded by an attached elevator.
Subclass:
241
Nonselfsupporting-type (e.g., leaned against building):
This subclass is indented under subclass 240. Movable
elevator wherein the rigid or semirigid means for contacting
and limiting the travel of the load-underlying support
surface to a fixed vertical path is incapable of maintaining
itself in an operative position without being leaned against
or propped up by another structure (e.g., building, pole).
SEE OR SEARCH CLASS:
182, Fire Escape, Ladder, or Scaffold, 101 for a vertically
moving platform on a ladder.
Subclass:
242
Knockdown or collapsible for transport:
This subclass is indented under subclass 240. Movable
elevator which is either designed to be (a) quickly
disassembled and reassembled when moved between use locations
or (b) readily folded into a more compact size, in at least
one dimension, when moved between use locations.
Subclass:
243
Wheel supported:
This subclass is indented under subclass 242. Movable
elevator wherein a portion of the weight of the elevator is
sustained or borne by an attached wheel in contact with the
ground when the elevator is moved in its disassembled or
folded configuration between use locations.
Subclass:
244
Wheel supported:
This subclass is indented under subclass 240. Movable
elevator wherein a portion of the weight of the elevator is
sustained or borne by an attached wheel in contact with the
ground when the elevator is moved between use locations.
Subclass:
245
INCLINED ELEVATOR:
This subclass is indented under the class definition.
Subject matter wherein the rigid or semirigid means for
contacting and limiting the path of travel of the
load-underlying support surface is obliquely angled relative
to the horizontal surface or ground upon which the elevator
is supported.
SEE OR SEARCH THIS CLASS, SUBCLASS:
201 for an inclined elevator mounted adjacent a stairway and
used to move only a single individual.
SEE OR SEARCH CLASS:
182, Fire Escape, Ladder, or Scaffold, 10 for a support
traveling along an inclined cable.
414, Material or Article Handling, 595 for an inclined track
elevator with means to load or unload it.
Subclass:
246
Having linking cable tension change actuated stopping means
for load support:
This subclass is indented under subclass 245. Subject matter
having braking or catching means mounted on or engaging the
load-underlying support surface and selectively holding it at
different locations along its travel path, which means is
responsive to variations in the amount of tension in a cable*
structurally linking the power source of a drive-means* to
the load-underlying support surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
202 for means for stopping the load-underlying support
surface of an inclined elevator mounted adjacent a stairway.
361 for means for stopping the load-underlying support
surface of an elevator which is actuated by a change in
tension of its suspension cable.
Subclass:
247
HAVING COMPUTER CONTROL OF ELEVATOR:
This subclass is indented under the class definition.
Subject matter having a central processing unit (CPU)
supervising a control* which fully regulates the entire
operation of an elevator without assistance by an
individual.
SEE OR SEARCH CLASS:
700, Data Processing: Generic Control Systems or Specific
Applications, subclass 275 for data processing mechanical
control system, which may be used in an environment that
includes an elevator.
Subclass:
248
Includes redundant circuitry:
This subclass is indented under subclass 247. Subject matter
also having a secondary central processing unit, components
of the control*, or means for carrying electric current
therebetween which assumes the function of its equivalent in
response to the failure of either the primary central
processing unit, components of the control*, or means for
carrying electric current therebetween.
Subclass:
249
HAVING INDEPENDENT SUPPORTS CARRYING DISTINCT LOADS AND
SHARING COMMON PATH:
This subclass is indented under the class definition.
Subject matter wherein the elevator has two or more
unattached load support surfaces which (a) shift different
loads and (b) follow the same rigid or semirigid means for
contacting and limiting the travel path.
(1) Note. Plural load-underlying support surfaces attached
to an endless belt or chain and having a vertical component
of travel are found in Class 198, Conveyors: Power-Driven
when the supports travel around a closed path and this
subclass when the supports reciprocate along a linear path
only.
SEE OR SEARCH CLASS:
104, Railways, subclass 25 for an endless horizontal train.
198, Conveyors: Power-Driven 321 for a conveyor specialized
to conveying people and 793+ for plural supports attached to
an endless belt or chain.
Subclass:
250
HAVING SPECIFIC LOAD SUPPORT DRIVE MEANS OR ITS CONTROL:
This subclass is indented under the class definition.
Subject matter having either (a) a particular structural
aspect of drive-means* (e.g., cable drum) for transmitting to
the load-underlying support surface of the elevator the force
necessary to shift the load between its entry and exit levels
or (b) a particular aspect of a control* for regulating the
operation of such a drive-means* detailed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
210 for specific drive-means* for the vehicle support of a
vehicle lift.
233 for specific drive-means* for the load support of an
industrial lift truck.
Subclass:
251
Includes linking support cable (e.g., rope, chain) in drive
means:
This subclass is indented under subclass 250. Drive-means*
including a cable* attached to the load underlying support
surface and which (a) is part of the structural linkage
needed to transmit power from the power source to the
load-underlying support surface of the elevator and (b) bears
at least a portion of the weight of the load-underlying
support surface during its travel along the shaft*.
(1) Note. Class 254, Implements or Apparatus for Applying
Pushing or Pulling Force, provides for the type of
drive-means proper for this and the indented subclasses when
the load support is merely named and no additional elevator
structure (e.g., load support guide) is claimed.
SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling
Force, 264 for apparatus for lifting a load which contacts
and pulls on a cable supporting the load.
Subclass:
252
And reciprocatingly shifted pulley wheel pulling thereon:
This subclass is indented under subclass 251. Drive-means*
also including an element having a generally circular
perimeter which engages the cable* and is (a) freely (i.e.,
nonpowered) rotatable about an axis through its center in
response to movement of the cable* over its perimeter and (b)
attached at its axis to the source of power and bodily
reciprocated thereby from one position to another to apply a
pulling force to the cable*.
SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling
Force, 385 for a load supporting cable shifted by a cable
engaging pulley reciprocated by drive means.
Subclass:
253
Shifted by fluid ram:
This subclass is indented under subclass 252. Drive-means*
wherein the source of power includes a telescopic, fluid
powered mechanism having (a) at least two concentric
components and (b) the axis of the cable* engaging element
attached to the reciprocating component thereof.
Subclass:
254
And rotatably driven drum pulling thereon:
This subclass is indented under subclass 251. Drive-means*
also including a drum turned about its central axis by the
source of power and having a perimeter which contacts the
cable* and either winds a segment of cable* around its
perimeter, or otherwise engages and pulls on a segment of the
cable*, to apply a pulling force on the load-underlying
support surface of the elevator.
(1) Note. The term "drum" is used in this and the indented
subclasses to designate a rotatable structure (e.g., capstan,
driven pulley, driven sprocket wheel, winding drum, windless,
etc.) which is caused to turn about its axis of rotation by
the source of power (e.g., motor).
SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling
Force, 266 for a rotatably driven drum pulling on a load
hoisting cable.
Subclass:
255
With projections or apertures for engaging complementary
formations on cable (e.g., sprocket):
This subclass is indented under subclass 254. Drive-means*
wherein the drum is provided with projections or apertures
located on the surface of its perimeter for engaging mating
apertures or projections formed along the length of the
cable*.
Subclass:
256
Plural driven drums:
This subclass is indented under subclass 254. Drive-means*
including at least one other drum turned about its central
axis by a source of power and having a perimeter which
contacts the same or another cable* to apply a pulling force
on the same or another load-underlying support surface.
Subclass:
257
Each moves distinct load support:
This subclass is indented under subclass 256. Drive-means*
wherein each drum engages and pulls on distinct cables*
attached to different load-underlying support surfaces.
Subclass:
258
Having distinct drive motors:
This subclass is indented under subclass 256. Drive-means*
wherein different motors having no common components and
whose operation is not dependent on one another provide the
source of power for each drum.
Subclass:
259
Cable accumulating-type drums:
This subclass is indented under subclass 256. Drive-means*
having at least two drums, each of which is of the type which
winds the contacted cable* about, and collects it on, its
perimeter when the drum is turned to apply a pulling force to
the load support surface.
Subclass:
260
Different size drums:
This subclass is indented under subclass 256. Drive-means*
having at least two drums, one of which has a larger
perimeter than the other.
Subclass:
261
Cable accumulating-type drum:
This subclass is indented under subclass 254. Drive-means*
wherein the drum is of the type which winds the cable* about,
and collects it on, the perimeter of the drum when the drum
is turned to apply a pulling force to the load-underlying
support surface.
Subclass:
262
Having cable guiding pulley wheel spaced therefrom:
This subclass is indented under subclass 261. Drive-means*
having a cable* directing element (e.g., pulley) positioned
along the path of travel of the cable* at a location spaced
from the drum, which element is provided with a generally
circular perimeter rotatable about an axis through its center
in response to the movement of the cable* over its
perimeter.
Subclass:
263
With structure adapting drum for manual drive:
This subclass is indented under subclass 254. Drive-means*
wherein the drum is provided with structure attached to it
which allows the drum to be turned by a human, rather than
mechanical, energy source of power.
Subclass:
264
With separate biasing means maintaining cable tension:
This subclass is indented under subclass 254. Drive-means*
wherein the cable* linking the drum to the load support
surface of the elevator has means engaging or attached to it,
other than the drum, which applies a force to the cable* to
keep it at the proper tautness.
Subclass:
265
Includes spring supported pulley:
This subclass is indented under subclass 264. Drive-means*
wherein the cable* tauting means includes (a) a cable*
directing element (e.g., pulley) positioned along the path of
the cable* and provided with a generally circular perimeter
which rotates about an axis through its center in response to
the movement of the cable* over its perimeter and (b) spring
means for movably mounting the cable* directing element to
supporting structure.
Subclass:
266
Having cable guiding pulley wheel spaced therefrom:
This subclass is indented under subclass 254. Drive-means*
having a cable* directing element (e.g., pulley) positioned
along the path of travel of the cable* and spaced from the
drum, which element is provided with a generally circular
perimeter rotatable about an axis through the center of the
element in response to the movement of the cable* over the
perimeter.
Subclass:
267
Includes threaded rider mating with support screw in drive
means:
This subclass is indented under subclass 250. Drive-means*
including (a) an element attached to the load-underlying
support surface of the elevator which has an aperture therein
with an internally facing threaded tooth and (b) a
cylindrical rod passing through the aperture and mounted
along the length of the shaft* which has a tooth on its outer
surface threaded around the longitudinal axis of the rod and
mating with the tooth of the element, and rotating relative
thereto, when power is transmitted to the load-underlying
support surface to shift it along the shaft*.
SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling
Force, 98 for screw type means for lifting a load.
Subclass:
268
Driven rider:
This subclass is indented under subclass 267. Drive-means*
wherein the apertured element attached to the load-underlying
support surface is rotated about the axis of the aperture by
the power source.
Subclass:
269
Includes scissored supporting levers in drive-means:
This subclass is indented under subclass 250. Drive-means*
including two levers attached to the load-underlying support
surface of the elevator which (a) are joined together by a
pivot pin at a point spaced from their ends and about which
they swing when the levers are transmitting power from the
power source to the support surface and (b) bear at least a
portion of the weight of the load-underlying support surface
during its travel along the shaft*.
SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling
Force, subclass 122 for lazy tong means used to lift a
load.
Subclass:
270
Includes gear on support mating with stationary rack or
chain:
This subclass is indented under subclass 250. Drive-means*
including both (a) a power transmitting toothed gear
rotatively attached to the load-underlying support surface of
the elevator and (b) a bar or chain mounted along the length
of the shaft* and having a row of complementary teeth or
apertures with which the teeth of the gear mate.
SEE OR SEARCH THIS CLASS, SUBCLASS:
352 for a gear mounted on the support surface and provided
with rotation inhibiting means which mates with a stationary
rack or chain.
Subclass:
271
Worm-type gear:
This subclass is indented under subclass 270. Drive-means*
wherein the rotatable gear either (a) has a cylindrical shape
and a continuous tooth on its outer surface which is threaded
around the longitudinal axis of the cylinder or (b) has teeth
on its outer surface shaped to cooperate with a cylinder
shaped bar mounted along the length of the shaft* and having
a continuous tooth on its outer surface which is threaded
around the longitudinal axis of the cylinder shaped bar.
Subclass:
272
Includes fluid supporting ram in drive-means:
This subclass is indented under subclass 250. Drive-means*
including a fluid powered mechanism attached to the
load-underlying support surface of the elevator having two
concentric telescopic components which bear a portion of the
weight of the load-underlying support surface and move it
along the shaft* when telescoped.
(1) Note. The line between an elevator drive proper for
this class (187) and a linear fluid motor and its control
proper for Class 91, Motors: Expansible Chamber Type, or a
linear fluid motor proper for Class 92, Expansible Chamber
Devices is as follows:
(a) Class 187 provides for elevating apparatus which claims
more than a named load-underlying support surface moved
between vertically spaced levels by a linear fluid motor or
additional elevator structure which is not necessary to the
internal fluid drive of the linear fluid motor (e.g.,
external load support guide structure, particular
load-underlying support surface structure, particular
elevator controls (e.g., rope controls), elevator
counterbalances),
(b) Class 91 provides for linear fluid motors and their
controls moving a load between spaced positions and claiming
a named load supporting surface, and
(c) Class 92 provides for linear fluid motors moving a load
between spaced positions and claiming a named load supporting
surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
215 for a stationary lift for a roadway vehicle having fluid
ram-type drive-means.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, appropriate subclasses,
for fluid pressure operated linear motors and their
controls.
92, Expansible Chamber Devices, appropriate subclasses, for
fluid pressure operated linear motors.
254, Implements or Apparatus for Applying Pushing or Pulling
Force, subclass 93 for fluid pressure operated lifting
means.
Subclass:
273
Pneumatic (e.g., steam):
This subclass is indented under subclass 272. Drive-means*
wherein the fluid utilized to power the mechanism is a gas.
Subclass:
274
Plural fluid rams having interrelated operation:
This subclass is indented under subclass 272. Drive-means*
provided with an additional, similar, telescopic, fluid
powered mechanism having its operation influenced or affected
by the other fluid powered mechanism.
Subclass:
275
With fluid flow controlling means:
This subclass is indented under subclass 272. Drive-means*
provided with particular means for directing and regulating
the amount of fluid going to the telescopic, fluid powered
mechanism.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, subclass 428 for a
manual control for a motive fluid valve carried and operated
from a named load.
Subclass:
276
Includes control for power source of drive- means:
This subclass is indented under subclass 250. Subject matter
including a control* which regulates the operation of either
(a) the force generating means of the drive-means* (e.g.,
motor) or (b) a component of the force transmitting linkage
of the drive-means* not bearing the weight of the
load-underlying support surface (e.g., fluid valve for fluid
ram).
SEE OR SEARCH THIS CLASS, SUBCLASS:
209 for a stationary lift for a roadway vehicle having
safety cutoff means for its drive-means*.
224 for an industrial lift truck having a control* for its
load support drive-means*.
Subclass:
277
With specific electrical component:
This subclass is indented under subclass 276. Subject matter
wherein the control* is provided with a particular part for
receiving input information or effecting the regulating
operation powered by an electric current.
SEE OR SEARCH THIS CLASS, SUBCLASS:
308 for an electrically actuated latch for holding the
manual input component of a control* for the power source of
drive-means* for an elevator.
SEE OR SEARCH CLASS:
200, Electricity: Circuit Makers and Breakers, digest 26 for
a circuit maker or breaker operated when a lifting cable
becomes slack (e.g., cable breaks).
318, Electricity: Motive Power Systems, appropriate
subclasses for electric motor controls, per se.
Subclass:
278
Actuated by movement of building (e.g., seismic activity):
This subclass is indented under subclass 277. Control*
wherein the load-underlying support surface travels within a
normally static, multistory structure and the information
input component has its operation induced or modified by a
change in position of one portion of the structure relative
to either (a) another portion of the structure or (b) the
ground caused by an accidental (e.g., explosion) or natural
(e.g., wind deflection) external force thereon.
Subclass:
279
Actuated by presence of obstruction in shaft:
This subclass is indented under subclass 277. Control* in
which the information input component has its operation
induced by the presence of an object (e.g., foot) projecting
into the shaft* and when the object is in this location it is
either (a) obstructing the safe passage of the
load-underlying support surface or (b) endangering its safety
when the load-underlying support surface passes through the
shaft*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
300 for a mechanical control* for the power source of a
drive-means* actuated by the presence of an obstruction in
the shaft*.
Subclass:
280
Actuated by location of access barrier or its lock:
Control* under subclasses 277 in which the information input
component has its operation induced by either (a) the
position of a door which allows or prevents the passage of a
load onto the load-underlying support surface or (b) the
position of a device having the sole function of holding such
a door in its load blocking or unblocking position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
301 for a mechanical control* for the power source of a
drive-means* actuated by the location of an access barrier or
its lock.
SEE OR SEARCH CLASS:
200, Electricity: Circuit Makers and Breakers, 61.62
particularly subclass 61.65, for a circuit maker or breaker
actuated by the operation of a closure, closure operator or
closure accessory.
Subclass:
281
Actuated by excessive load:
This subclass is indented under subclass 277. Control* in
which the information input component has its operation
induced by an increase in the weight of the load on the
load-underlying support surface beyond the normal or
acceptable limit.
Subclass:
282
Actuated by load support contacting trip in shaft:
This subclass is indented under subclass 277. Control* in
which the information input component has its operation
induced by engagement with either (a) a device located along
the shaft* and projecting thereinto when the input component
of the control* travels with the load-underlying support
surface or (b) the load-underlying support surface or
structure attached thereto when the input component of the
control is stationarily mounted, located along, and projects
into the shaft*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
302 for a mechanical control* for the power source of a
drive-means* actuated by a trip in the shaft*.
Subclass:
283
Having trip at each of plural landings:
This subclass is indented under subclass 282. Control*
having either a projecting operation inducing device or a
control input component located near each of numerous (i.e.,
more than two) landings* along the shaft*.
Subclass:
284
And means for final leveling:
This subclass is indented under subclass 283. Control*
having additional means which (a) begins its operation when a
relatively short vertical distance remains between the
load-underlying support surface and a landing* at which it is
stopping and (b) adjusts the regulating functioning of the
control* to accurately align the landing* and load-underlying
support surface when fully stopped.
Subclass:
285
For fluid-type power source:
This subclass is indented under subclass 277. Subject matter
in which the force generating means regulated by the control*
is powered by a fluid flowing therethrough.
SEE OR SEARCH THIS CLASS, SUBCLASS:
275 for a fluid ram which moves the load-underlying support
surface and has specific fluid flow controlling means (e.g.,
valve).
Subclass:
286
Actuated by load support speed sensor or governor:
This subclass is indented under subclass 285. Control* in
which the information input component has its operation
induced by regulating or detecting means which either
measures or is responsive to (a) changes in the velocity or
(b) improper velocity of the load support surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
305 for a mechanical control* for the power source of a
drive-means* actuated by a load support speed sensor or
governor.
Subclass:
287
Includes safety cut off switch actuated by load support speed
sensor or governor:
This subclass is indented under subclass 277. Control*
including a device for stopping the flow of electric current
to the force generating means when the information input
component has its operation induced by regulating or
detecting means which measures or is responsive to excessive
or improper velocity of the load-underlying support surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
305 for a mechanical control* for the power source of a
drive-means* actuated by a load support speed sensor or
governor.
Subclass:
288
Control actuates mechanical braking means for power source:
This subclass is indented under subclass 277. Subject matter
wherein the control* regulates the operation of means
directly engaging and stopping or slowing the motion of a
moving component of either (a) the force generating means of
the drive-means* (e.g., motor) or (b) a component of the
force transmitting linkage of the drive-means* not bearing
the weight of the load-underlying support surface (e.g.,
clutch).
SEE OR SEARCH CLASS:
254, Implements or Apparatus for Applying Pushing or Pulling
Force, subclass 267 for a rotational speed governor
controlling retarding means engaging a cable pulling drum.
Subclass:
289
For electric power source:
This subclass is indented under subclass 277. Subject matter
in which the force generating means regulated by the control*
is powered by an electric current.
Subclass:
290
With auxiliary supply of electricity:
This subclass is indented under subclass 289. Subject matter
provided with an alternate or reserve supply (e.g., battery)
of electric current for powering the control* or force
generating means upon failure or reduction in the primary
supply of electric current.
Subclass:
291
Having means for final leveling:
This subclass is indented under subclass 289. Control*
having means which (a) begins its operations when a
relatively short vertical distance remains between the
load-underlying support surface and a landing* at which it is
stopping and (b) adjusts the regulating functioning of the
control* to accurately align the landing* and load-underlying
support surface when fully stopped.
Subclass:
292
With means for stopping vibration or bump start:
This subclass is indented under subclass 289. Control with
means adjusting the functioning of the control* so as to
prevent either (a) the oscillation of the load-underlying
support surface during its travel or (b) any motion opposite
to the intended direction of travel of the load-underlying
support surface when it is leaving a landing*.
Subclass:
293
Controls power source speed:
This subclass is indented under subclass 289. Subject matter
wherein the control* regulates the force output rate of the
generating means.
Subclass:
294
Actuated near terminus of shaft:
This subclass is indented under subclass 293. Control* in
which the information input component has its operation
induced when the load-underlying support surface comes close
to the upper or lower end of the shaft*.
Subclass:
295
Having control signal pattern generator:
This subclass is indented under subclass 293. Control*
having an electrical component in the regulating circuitry of
the force generating means which receives a signal from a
landing*, formulates the electrical command signals necessary
to accomplish the desired movement of the load-underlying
support surface, and transmits these signals to another
component of the regulating circuitry.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247 for a central processing unit which accomplishes this
function.
Subclass:
296
Limited to power source (i.e., motor) utilizing A.C. power:
This subclass is indented under subclass 293. Subject matter
in which the force generating means regulated by the control*
must specifically use an alternating electric current.
SEE OR SEARCH CLASS:
318, Electricity: Motive Power Systems, 727 for an
induction motor system which is not combined with, or limited
to use solely with, an elevator.
Subclass:
297
Limited to Power Source (i.e., motor) Utilizing D.C. Power:
This subclass is indented under subclass 293. Subject matter
in which the force generating means regulated by the control*
must specifically use a direct electric current.
SEE OR SEARCH CLASS:
388, Electricity: Motor Control Systems, appropriate
subclasses for a D.C. motor control which is not combined
with, or limited to use solely with, an elevator.
Subclass:
298
Actuated by human operator engaging specific input part:
This subclass is indented under subclass 289. Control* in
which a particular aspect of the information input component
is detailed and has its operation induced by force applied to
it by an individual (e.g., manual pull starting cable).
SEE OR SEARCH THIS CLASS, SUBCLASS:
306 for a mechanical control* for the power source of a
drive-means* actuated by a human operator.
Subclass:
299
With means locking input part of control against movement:
This subclass is indented under subclass 298. Control*
provided with means having the sole function of holding the
information input component at a particular position and
resisting its shifting by the individual.
Subclass:
300
Actuated by presence of obstruction in shaft:
This subclass is indented under subclass 276. Control* in
which the information input component has its operation
induced by the presence of an object (e.g., foot) projecting
into the shaft* and when the object is in this location it is
either (a) obstructing the safe passage of the
load-underlying support surface or (b) endangering its safety
when the load-underlying support surface passes through the
shaft*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
279 for an electric control* for the power source of the
drive-means* actuated by the presence of an obstruction in
the shaft*.
Subclass:
301
Actuated by location of access barrier or its lock:
This subclass is indented under subclass 276. Control* in
which the information input component has its operation
induced by either (a) the position of a door which allows or
prevents the passage of a load onto the load-underlying
support surface or (b) the position of a device having the
sole function of holding such a door in its load blocking or
unblocking position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
280 for an electric control* for the power source of a
drive-means* actuated by the location of an access barrier or
its lock.
Subclass:
302
Actuated by load support contacting trip in shaft:
This subclass is indented under subclass 276. Control* in
which the information input component has its operation
induced by engagement with either (a) a device located along
the shaft* and projecting thereinto when the input component
of the control* travels with the load-underlying support
surface or (b) the load-underlying support surface or
structure attached thereto when the input component of the
control is stationarily mounted, located along, and projects
into the shaft*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
282 for an electric control* for the power source of the
drive-means* actuated by a trip in the shaft*.
Subclass:
303
Having trip at each of plural landings:
This subclass is indented under subclass 302. Control*
having either a projecting operation inducing device or a
control input component located near each of numerous (i.e.,
more than two) landings* located along the shaft*.
Subclass:
304
Trip supported on or formed by cable:
This subclass is indented under subclass 303. Control*
wherein the projecting operation inducing device or the
control input component located near a landing* is sustained
by or made of a cable*.
Subclass:
305
Actuated by load support speed sensor or governor:
This subclass is indented under subclass 276. Control* in
which the information input component has its operation
induced by regulating or detecting means which either
measures or is responsive to (a) changes in the velocity or
(b) improper velocity of the load-underlying support
surface.
Subclass:
306
Actuated by human operator engaging specific input part:
This subclass is indented under subclass 276. Control* in
which the information input component has its operation
induced by force applied to it by an individual and a
particular structural aspect of the input component is
detailed (e.g., made of cable*).
SEE OR SEARCH THIS CLASS, SUBCLASS:
298 for an electric control* for the power source of the
drive-means* actuated by a human operator.
Subclass:
307
With means for locking input part of control against movement
by operator:
This subclass is indented under subclass 306. Control*
provided with means having the sole function of holding the
information input component (e.g., handle) at a particular
location to prevent its operation by an individual until the
holding means is released.
Subclass:
308
Actuated by position or movement of access barrier or its
position lock:
This subclass is indented under subclass 307. Control*
wherein the holding means for the information input component
has its operation induced by the location or shifting of
either (a) a passage door for the load-underlying support
surface or (b) a device for holding such a door in its
blocking or unblocking location.
Subclass:
309
Having barrier position lock operable only when load support
or control input part safely positioned:
This subclass is indented under subclass 308. Control*
wherein damage to the load is prevented by having the device
for holding the door constructed or located so it may not be
normally released or applied except when either (a) the
load-underlying support surface is at a landing* or (b) the
information input component of the control* is in a neutral
location where the drive-means* will not transmit force to
the load-underlying support surface.
Subclass:
310
With common actuation of barrier position lock and input part
locking means:
This subclass is indented under subclass 309. Control*
provided with structural linkage for transmitting force
either (a) from the means holding the information input
component to the device for holding the door to release or
apply the device when the holding means is shifted or (b)
from a single input source to both the means for holding the
information input component and the device for holding the
door at the same time to make their operation
interdependent.
Subclass:
311
Using cable to transmit input:
This subclass is indented under subclass 306. Control*
wherein a cable* conveys force from the individual to the
input component.
Subclass:
312
Running cable type:
This subclass is indented under subclass 311. Control* in
which the cable* is linked to the load-underlying support
surface in such a manner as to travel therewith or at a rate
proportional thereto.
Subclass:
313
WITH BARRIER FOR REGULATING ACCESS TO LOAD SUPPORT:
This subclass is indented under the class definition.
Subject matter provided with means (e.g., gate, door) which
allows or prevents the passage of a load (e.g., freight,
rider) entering or leaving the load-underlying support
surface by selectively moving, relative to the path of travel
of the load, into a blocking or unblocking position.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, in appropriate subclasses,
for door structure in combination with merely named elevator
structure (e.g., car, shaft).
Subclass:
314
Operation variable for emergency, maintenance, or abnormal
condition:
This subclass is indented under subclass 313. Subject matter
provided with means which changes, or allows changes to, the
normal functioning of the path blocking means when (a) a
serious crisis exists which could cause injury (e.g., fire,
broken support cable*), (b) repair or cleaning of a component
of the elevator is needed, or (c) an unusual situation occurs
(e.g., landing* and car not correctly aligned).
Subclass:
315
Includes motor or motor driven linkage for shifting barrier:
This subclass is indented under subclass 313. Subject matter
wherein the path blocking means is moved between its
positions by drive-means* which includes either (a) a device
which converts nonmechanical energy (e.g., electrical) or
stored energy (e.g., fuels) into mechanical energy or (b) a
structural linkage intended to be driven by such a device.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, 324 for an operator for
moving a closure.
Subclass:
316
With specific electrical control therefor:
This subclass is indented under subclass 315. Subject matter
provided with a control* for the drive-means* of the path
blocking means having a particular aspect of a part powered
by an electric current detailed (e.g., electric eye).
Subclass:
317
Includes object detecting sensor or switch on barrier:
This subclass is indented under subclass 316. Subject matter
wherein the information input component of the control* is
carried by the path blocking means and includes circuit
making and breaking means which contacts, or otherwise
determines the physical presence of, an object obstructing
the course along which the path blocking means moves.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, 26 for safety means
responsive to an obstruction in the path of a closure.
200, Electricity: Circuit Makers and Breakers, subclass
61.43 for a sensitive edge type feeler, per se, intended to
be mounted on a closure and to detect an object in its path.
Subclass:
318
Shifts barrier mounted at landing:
This subclass is indented under subclass 315. Subject matter
wherein the drive-means* moves path blocking means which is
stationarily positioned at a landing* to allow or prevent
passage of the load between the load-underlying support
surface and the landing*.
Subclass:
319
Through coupling with barrier on load support:
This subclass is indented under subclass 318. Subject matter
wherein the path blocking means positioned at the landing* is
detachably connected to distinct path blocking means attached
to and traveling with the load-underlying support surface
when both path blocking means are at the same landing* and a
common energy converting device (i.e., motor) of the
drive-means* therefor utilizes this connection to move both
path blocking means simultaneously.
Subclass:
320
Plural interconnected motors shift barriers at different
landings:
This subclass is indented under subclass 318. Subject matter
having at least two distinct energy converting devices which
either (a) share a common energy supply system, (b) power
portions of the same drive-means*, or (c) have their
operation regulated by the same control* and which move
distinct path blocking means stationarily positioned at
various landings* along the shaft*.
Subclass:
321
Motor stationarily mounted and linkable to barriers on
different landings:
This subclass is indented under subclass 318. Subject matter
wherein the energy converting device is attached to structure
at a fixed location and the structural linkage which it
powers is constructed to move distinct path blocking means
stationarily positioned at various landings* along the
shaft*.
Subclass:
322
Includes rotating shaft extending between landings:
This subclass is indented under subclass 321. Subject matter
wherein the structural linkage includes an elongated rigid
element which passes through plural landings* and turns about
its longitudinal axis when transmitting power to path
blocking means.
Subclass:
323
Nonelectric motor:
Subject matter under 318 in which the energy converting
device (i.e., motor) does not utilize electric current as
input energy.
Subclass:
324
Shifts sliding barrier on load support:
This subclass is indented under subclass 315. Subject matter
wherein the drive-means* moves path blocking means attached
to the load-underlying support surface bodily, as a unit,
along guide means which constrains its movement to
rectilinear reciprocation in substantially a single primary
direction when repositioned either to prevent or allow
passage of a load.
Subclass:
325
Including barrier mounted at landing:
This subclass is indented under subclass 313. Subject matter
including path blocking means stationarily positioned at a
landing* to allow or prevent passage of the load between the
load-underlying support surface and the landing*.
Subclass:
326
Barrier shifted by drive means powered by motion of load
support:
This subclass is indented under subclass 325. Subject matter
wherein the stationary path blocking means is selectively
moved to prevent or allow passage of the load by drive-means*
powered by contact with a moving load-underlying support
surface, or by structure attached to the load-underlying
support surface, of an elevator.
Subclass:
327
Having endless driving belt in drive means:
This subclass is indented under subclass 326. Drive-means*
having a flaccid element (e.g., chain) formed into a
continuous loop which transmits force to the path blocking
means when moved around a closed path by the power source.
Subclass:
328
Having rotatably driven drum and cable pulled thereby in
drive means:
This subclass is indented under subclass 326. Drive-means*
having a drum turned about its central axis by the source of
power and a cable* which is either wound around or otherwise
engaged by the perimeter of the drum to transmit force to the
path blocking means.
Subclass:
329
Having cable and guiding pulley therefor in drive means:
This subclass is indented under subclass 326. Drive-means*
having a cable* and a cable* directing element (e.g., pulley)
positioned along the path of travel of the cable*, which
element is provided with a generally circular perimeter
rotatable about an axis through the center of the element in
response to the movement of the cable* over its perimeter
when the cable transmits force to the path blocking means.
Subclass:
330
With means to couple to barrier on load support:
This subclass is indented under subclass 325. Subject matter
provided with means for detachably connecting the path
blocking means stationarily positioned at a landing* to
distinct path blocking means attached to and traveling with
the load-underlying support surface when both path blocking
means are at the same landing* so that both are moved
Subclass:
331
With position lock therefor:
This subclass is indented under subclass 325. Subject matter
provided with means having the sole function of restricting
or preventing the movement of the path blocking means from a
location where it allows passage of the load to a location
where it prevents passage of the load.
Subclass:
332
Collapsible or rollable type:
This subclass is indented under subclass 325. Subject matter
wherein the stationary path blocking means has two distinct
edges which are connected to each other by load blocking
structure which permits the edges to move either closer
together by reducing one of its dimensions (e.g., folds
compact, winds around one of the edges) when the path of the
load is cleared or spread apart by expanding one of its
dimensions when the path of the load is blocked thereby.
Subclass:
333
Slideably mounted:
This subclass is indented under subclass 325. Subject matter
wherein the stationary path blocking means both (a) is
attached to the landing* by guide means which constrains its
movement to rectilinear reciprocation in substantially a
single primary direction and (b) moves bodily as a unit when
repositioning to prevent or allow passage of the load.
Subclass:
334
Including slideably mounted barrier on load support:
This subclass is indented under subclass 313. Subject matter
including path blocking means which (a) travels with and is
attached to the load-underlying supporting surface by guide
means which constrains the blocking movement of the means to
rectilinear reciprocation in substantially a single primary
direction and (b) moves bodily as a unit when repositioning
to prevent or allow passage of the load.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, 116 for plural closures
having opposed similar movement.
Subclass:
335
With position lock therefor:
This subclass is indented under subclass 334. Subject matter
provided with means having the sole function of restricting
or preventing the movement of the path blocking means from a
location where it either allows passage of the load or
prevents passage of the load.
Subclass:
336
WITH CLOSURE MEANS FOR SHAFT OPENING THROUGH LANDING:
This subclass is indented under the class definition.
Subject matter provided with repositionable means for
covering the passageway formed through the landing* by the
elevator shaft*.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, subclass 33 for a closure
shiftable to bridge an obstacle or pit.
Subclass:
337
Including pivoted closure:
This subclass is indented under subclass 336. Subject matter
wherein at least a portion of the means covering the
passageway includes covering structure (e.g., door) connected
to the landing* in a manner allowing it to both (a) swing in
an arcuate path about a constantly contacted connection point
or region located on the landing* and (b) maintain movement
between the covering structure and landing* at their contact
point or region.
Subclass:
338
Shifted by drive means powered by load support motion:
This subclass is indented under subclass 337. Passageway
covering means wherein the swinging covering structure is
moved about its connection to the landing* by drive-means*
powered by contact with a moving load-underlying support
surface, or structure attached to the load-underlying support
surface, of an elevator.
(1) Note. Means located on and traveling with the load
supporting surface which is intended to impact directly
against the passageway covering means is not considered a
drive-means* proper for this subclass and is found in
subclass 337.
Subclass:
339
With closure latching means:
This subclass is indented under subclass 337. Passageway
covering means provided with means for releasably holding the
free end of the swinging covering structure in its passage
covering position or its passage uncovering position.
Subclass:
340
Including transversely sliding closure:
This subclass is indented under subclass 336. Subject matter
wherein the means covering the passageway includes covering
structure (e.g., door) which is (a) connected to the landing*
by guide means which constrains its movement to rectilinear
reciprocation in substantially a single primary direction
intersecting the central axis of the shaft*, and (b) movable
only bodily as a unit between its covering and uncovering
positions.
Subclass:
341
Shifted by drive means powered by load support motion:
This subclass is indented under subclass 340. Passageway
covering means wherein the reciprocating covering structure
is moved by drive-means* powered by contact with a moving
load-underlying support surface, or structure attached to the
load-underlying support surface, of an elevator.
(1) Note. Means located on and traveling with the
load-underlying support surface which is intended to impact
directly against the passageway covering means is not
considered a drive-means* proper for this subclass and is
found in subclass 340.
Subclass:
342
Including closure bodily carried along shaft by load
support:
This subclass is indented under subclass 336. Subject matter
wherein at least a portion of the means covering the
passageway includes covering structure (e.g., hatch)
completely detachable from the passageway formed in the
landing*, this detachable covering structure being moved in
at least one direction along the shaft* by the
load-underlying support surface of an elevator, or structure
attached thereto, when the surface or structure passes
through the passageway.
Subclass:
343
HAVING MEANS CUSHIONING CONTACT OF LOAD SUPPORT WITH TERMINUS
OF SHAFT:
This subclass is indented under the class definition.
Subject matter having means which (1) is located either (a)
near the top or bottom of the shaft* of the elevator or (b)
on the upper or lower portion of the load-underlying support
surface and (2) coacts respectively with the upper or lower
portion of the support surface or the top or bottom of the
shaft when the load-underlying support surface comes close to
an end of the shaft* to soften the force of impact of the
support surface therewith.
(1) Note. An impact softening means proper for this and the
indented subclasses is capable of retarding the movement of
the load-underlying support surface only adjacent to the ends
of a shaft* and not at different points along the shaft*.
SEE OR SEARCH CLASS:
188, Brakes, 266 for an internal-resistance retarder, per
se.
Subclass:
344
Fluid resistance or shock absorber-type means:
This subclass is indented under subclass 343. Subject matter
wherein the impact softening means includes structure which
contacts or compresses a gas or liquid medium and utilized
the retarding force caused by this contact or compression to
slow down the load-underlying support surface coacting
therewith.
(1) Note. This subclass includes patents in which the
load-underlying support surface is designed to act as a
piston within a cylinder of a fluid shock absorber when
entering a modified portion of the shaft.
Subclass:
345
HAVING FLUID DAMPENING MEANS REGULATING LOAD SUPPORT
MOVEMENT:
This subclass is indented under the class definition.
Subject matter having means which (a) contacts and pushes
against a resisting fluid and (b) is linked to, engages, or
is supported on the load-underlying support surface to slow
the travel of the support surface to an acceptable speed in
at least one direction by direct utilization of the
resistance of the fluid to the movement of a component of the
means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
343 for means which cushions the travel of the load
supporting surface only near an end of the shaft*.
351 for means stopping the load supporting surface which
utilizes a fluid operator* for moving a component.
SEE OR SEARCH CLASS:
188, Brakes, 266 for an internal-resistance motion retarder,
per se.
Subclass:
346
With fluid coacting portion carried by load support:
This subclass is indented under subclass 345. Subject matter
wherein the component of the means which contacts and pushes
against the resisting fluid is supported by, and bodily
transported with, the load-underlying support surface during
its travel up and down the shaft*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
352 for a nonfluid dampened rotating gear attached to a
load-underlying support surface which coacts with a
stationary rack.
Subclass:
347
Includes piston and cylinder attached to support by cable:
This subclass is indented under subclass 345. Subject matter
wherein the fluid resistance means includes a component
located within and movable along the length of an elongated
hollow chamber containing the resisting fluid, the component
displacing or compressing the fluid when moved relative to
the chamber by the travel of the load-underlying support
surface which is linked thereto by a cable*.
Subclass:
348
WITH EMERGENCY RUNNING SUSPENSION CABLE FOR LOAD SUPPORT:
This subclass is indented under the class definition.
Subject matter provided with a cable* either attached or
attachable to the load-underlying support surface which
travels with and assumes a portion of the weight of the
load-underlying support surface upon the breakage or failure
of the normal or primary weight sustaining structure of the
load-underlying support surface to prevent its uncontrolled
falling.
SEE OR SEARCH THIS CLASS, SUBCLASS:
251 for a suspension cable* which is a component of the
normal drive-means* for the load-underlying support surface.
407 for a stationary cable which guides the travel of the
load-underlying supporting surface.
Subclass:
349
WITH CONDITION ACTUATED MEANS RELEASING LOAD SUPPORT FROM
DRIVE MEANS:
This subclass is indented under the class definition.
Subject matter provided with means which disconnects or
detaches the load-underlying support surface from its
drive-means* in response to a particular circumstance (e.g.,
over tensioned cable, cable overwinding).
(1) Note. The patents within this subclass usually include
structure for supporting or stopping the movement of the load
supporting surface after it has been detached or
disconnected.
SEE OR SEARCH THIS CLASS, SUBCLASS:
411 for a device which is not detached in response to a
particular condition for connecting the drive-means* to the
load-underlying support surface.
SEE OR SEARCH CLASS:
294, Handling: Hand and Hoist-Line Implements, 82.24 for a
load release type hoisting hook and subclasses 110.1+ for an
automatically released pivoting jaws type grapple.
Subclass:
350
HAVING MEANS ENGAGING CABLE ATTACHED TO LOAD SUPPORT, OR ITS
GUIDE, TO SLOW LOAD SUPPORT:
This subclass is indented under the class definition.
Subject matter having (a) a cable* (e.g., haulage cable,
counter weight cable, looped braking cable) connected to and
traveling with the load-underlying support surface which can
transmit slowing or halting force directly thereto and (b)
braking means for engaging either the cable* or a nondriven
cable* directing means (e.g., pulley) to slow or halt the
travel of the load-underlying support surface by transmitting
the braking force through the cable* thereto.
SEE OR SEARCH CLASS:
188, Brakes, subclass 65.1 for a brake for a strand.
Subclass:
351
HAVING SPECIFIC MEANS CONTACTING OR ON LOAD SUPPORT FOR
STOPPING OR SLOWING THEREOF:
This subclass is indented under the class definition.
Subject matter having particular means (e.g., pawl, brake
shoe) which either (1) is located along or cooperates with
the shaft* and directly engages the load-underlying support
surface or (2) is carried by the load-underlying support
surface and engages structure located along or cooperating
with the shaft* for (a) retaining the support surface at a
particular location (e.g., catch) or (b) halting or retarding
the travel of the support surface (e.g., brake).
Subclass:
352
Includes gear on support mating with stationary rack:
This subclass is indented under subclass 351. Subject matter
wherein the retaining, halting, or retarding means includes
(a) a toothed gear rotatively attached to the load-underlying
support surface of the elevator and provided with means to
inhibit its rotation and (b) a bar or chain mounted along the
length of the shaft* and having a row of complementary teeth
or apertures with which the teeth of the rotatable gear
intermesh.
Subclass:
353
Worm-type gear:
This subclass is indented under subclass 352. Subject matter
in which the rotatable gear either (a) has a cylindrical
shape and a continuous tooth on its outer surface which is
threaded around the longitudinal axis of the cylinder or (b)
has teeth on its outer surface shaped to cooperate with a
cylinder shaped bar mounted along the length of the shaft*
and having a continuous tooth on its outer surface which is
threaded around the longitudinal axis of the cylinder shaped
bar.
Subclass:
354
Means actuated by access barrier movement:
This subclass is indented under subclass 351. Retaining,
halting, or retarding means having its operation induced by
the shifting of path blocking means (e.g., door) which allows
or prevents the passage of a load entering or leaving the
load-underlying support surface by a path going to or from a
landing*.
Subclass:
355
And having movable contact component carried by support:
This subclass is indented under subclass 354. Retaining,
halting, or retarding means carried by the load-underlying
support surface and having one relatively moving part which
in one of its positions forcefully engages fixed structure
located along or forming a portion of the shaft* to retain,
halt, or retard the travel of the support surface and in
another of its positions allows free movement of the support
surface past or along the fixed structure.
SEE OR SEARCH CLASS:
188, Brakes, 41 for a brake applied to the traction rail of
a railroad.
Subclass:
356
Stationarily mounted and having disparate movable contact
component:
This subclass is indented under subclass 351. Retaining,
halting, or retarding means which is fixedly located along a
side of the shaft* and has at least one relatively moving
connected part which has no other function but to engage the
load-underlying support surface, or structure traveling
therewith, to retain, halt, or retard the supporting surface
when in one of its positions and in another of its positions
allow free movement of the supporting surface therepast.
(1) Note. A fixedly located movable structure along a side
of the shaft having a function other than the mere stopping
of the load-underlying support surface (e.g., movable
elongated guide rail) is found in subclass 351.
Subclass:
357
Mounted only at landings or terminus of shaft:
This subclass is indented under subclass 356. Retaining,
halting, or retarding means which is located along the shaft*
solely at the landings* or at the top or bottom of the
shaft*.
Subclass:
358
Having drive means for component powered by load support
motion:
Retaining, halting, or retarding means under 356 having its
relatively moving part moved by drive-means* powered by
contact with a moving load-underlying support surface, or
structure attached to such load-underlying support surface,
of an elevator.
Subclass:
359
Includes movable contact component on support for engaging
shaft structure:
This subclass is indented under subclass 351. Retaining,
halting, or retarding means which is carried by the
load-underlying support surface and has at least one
relatively moving connected part which in one of its
positions forcefully engages fixed structure located along or
forming a portion of the shaft* to retain, halt, or retard
the travel of the support surface and in another of its
positions allows free movement of the support surface past or
along the fixed structure.
SEE OR SEARCH CLASS:
188, Brakes, 41 for a brake applied to the traction rail of
a railroad.
Subclass:
360
Interlocking only with structure of landings or terminus of
shaft:
Retaining, halting, or retarding means under 359 wherein the
movable part can only forcefully engage fixed structure
forming a portion of the landings* or the top or bottom of
the shaft* to retain, halt, or retard the travel of the
load-underlying support surface.
Subclass:
361
Actuated by change in suspension or counterweight cable
tension:
This subclass is indented under subclass 359. Retaining,
halting, or retarding means in which the relatively movable
engaging part has its operation induced by a variation in
tautness (e.g., breaking) of a cable* connected to the
load-underlying support surface and wherein this cable both
(a) bears a portion of the weight of the load-underlying
support surface during its travel along the shaft* and (b) is
linked either to the power source or a weight which causes or
opposes the travel of the load-underlying support surface in
one direction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
246 for means for stopping the load-underlying support
surface of an inclined elevator which is actuated by a change
in tension of its drive cable.
Subclass:
362
And shaped to cut into cooperating structure:
This subclass is indented under subclass 361. Retaining,
halting, or retarding means wherein the relatively movable
engaging part has a sharp edge configured in such a manner as
to sever or deeply pierce into fixed structure located along
or forming a portion of the shaft* to retain, halt, or retard
the load-underlying support surface.
Subclass:
363
And interlocking with complementary stationary formation
(e.g., catches):
This subclass is indented under subclass 361. Retaining,
halting, or retarding means wherein the relatively movable
engaging part engages a corresponding surface configuration
on fixed structure located along or forming a portion of the
shaft* to retain, halt, or retard the load-underlying support
surface.
Subclass:
364
Slideably mounted contact component:
This subclass is indented under subclass 363. Retaining,
halting, or retarding means having its relatively moving
engaging part connected to another part of the means, or to
the structure attaching it to the load-underlying support
surface, by two distinct, rigid or semirigid formations which
(1) are each integral with or attached to a different one of
the parts or part and attaching structure and (2) have
mutually cooperating surfaces both (a) in gliding contact
with each other and (b) restricting the relative movement of
the engaging part to substantially a single primary
direction.
Subclass:
365
Slides perpendicular to path of support:
This subclass is indented under subclass 364. Retaining,
halting, or retarding means wherein the single primary
direction along which the engaging part moves is at a right
angle to the fixed structure located along or forming a
portion of the shaft* which is engaged by it.
Subclass:
366
Plural pivotally attached gripping contact components
engaging common rail:
This subclass is indented under subclass 363. Retaining,
halting, or retarding means having two relatively moveable
engaging parts which (1) are connected to the load-underlying
support surface in a manner allowing both of them to (a)
swing in an arcuate path about a constantly contacted
connection point or region traveling with the support surface
and (b) maintain movement between the part and connection at
their contact point or region and (2) forcefully engage
opposite sides of a slender member or formation which extends
along the length of the shaft*.
Subclass:
367
Pivotally attached contact component:
This subclass is indented under subclass 361. Retaining,
halting, or retarding means in which the relatively movable
engaging part is connected to the load-underlying support
surface in a manner allowing it to both (a) swing in an
arcuate path partially about a constantly contacted
connection point or region traveling with the support surface
and (b) maintain movement between the part and connection at
their contact point or region.
(1) Note. Patents with an engaging part which revolves
completely around the contacted point or region (e.g., a
rotating guide wheel with a brake) are not proper for this
and the indented subclasses and are found in subclass 361.
Subclass:
368
With eccentric camming face:
This subclass is indented under subclass 367. Retaining,
halting, or retarding means wherein the engaging part is
provided with a curved engaging periphery and the axis about
which the engaging part swings is positioned in such a manner
that it is not geometrically centered relative to the
engaging periphery of the part which arrangement causes the
periphery to apply ever increasing pressure to the fixed
structure it engages as the part swings toward its final
position.
Subclass:
369
Having similar contact component cooperating to grip common
rail:
This subclass is indented under subclass 368. Retaining,
halting, or retarding means having an additional engaging
part which is shaped like the first engaging part and acts
therewith to forcefully engage opposite sides of a slender
member or formation which extends along the length of the
shaft*.
Subclass:
370
Plural gripping contact components engaging common rail:
This subclass is indented under subclass 367. Retaining,
halting, or retarding means having two swinging engaging
parts forcefully engaging opposite sides of a slender member
or formation which extends along the length of the shaft*.
Subclass:
371
Slideably mounted contact component:
This subclass is indented under subclass 361. Retaining,
halting, or retarding means having its relatively moving
engaging part connected to another part of the means, or to
the structure attaching it to the load-underlying support
surface, by two distinct, rigid or semirigid formations which
(1) are each integral with or attached to a different one of
the parts or part and attaching structure and (2) have
mutually cooperating surfaces both (a) in gliding contact
with each other and (b) restricting the relative movement of
the engaging part to substantially a single primary
direction.
Subclass:
372
Having wedge shape or sliding along incline:
This subclass is indented under subclass 371. Retaining,
halting, or retarding means in which either (a) the moving
engaging part has a tapered contour or (b) the cooperating
formations restricting its movement to a primary direction
are at an acute or an obtuse angle to the fixed structure
located along the shaft*, and the engaging part and
cooperating formation are positioned relative to each other
in such a manner that the part will increase the engaging
force applied against the fixed structure when moved along
the formation in one direction.
Subclass:
373
Actuated by load support speed governor or sensor:
This subclass is indented under subclass 359. Retaining,
halting, or retarding means in which the relatively movable
engaging part has its operation induced by regulating or
detaching means which either measures or is responsive to
changes in the velocity of the load-underlying support
surface.
SEE OR SEARCH CLASS:
188, Brakes, 180 and 189 for a speed-responsive brake.
Subclass:
374
Pivotally attached contact component:
This subclass is indented under subclass 373. Retaining,
halting, or retarding means in which the relatively movable
engaging part is connected to the load-underlying support
surface in a manner allowing it to both (a) swing in an
arcuate path partially about a constantly contacted
connection point or region traveling with the support surface
and (b) maintain movement between the part and connection at
their contact point or region.
(1) Note. Patents with an engaging part which revolves
completely around the contacted point or region (e.g., a
rotating guide wheel with a brake) are not proper for this
and the indented subclasses and are found in subclass 373.
Subclass:
375
Plural gripping contact components engaging common rail:
This subclass is indented under subclass 374. Retaining,
halting, or retarding means having two swinging engaging
parts forcefully engaging opposite sides of a slender member
or formation which extends along the length of the shaft*.
Subclass:
376
Slidable contact component having wedge shape or sliding
along incline:
This subclass is indented under subclass 373. Retaining,
halting, or retarding means having its relatively moving
engaging part connected to another part of the means, or to
the structure attaching it to the load-underlying support
surface, by two distinct rigid or semirigid formations which
(1) are each integral with or attached to a different one of
the parts or part and attaching structure and (2) have
mutually cooperating surfaces both (a) in gliding contact
with each other and (b) restricting the relative movement of
the engaging part to substantially a single primary
direction, and further wherein either (i) the engaging part
has a tapered contour or (ii) the cooperating formations
restricting its movement to a primary direction are at an
acute or an obtuse angle to the fixed structure located along
the shaft*, and the engaging part and cooperating formation
are positioned relative to each other in such a manner that
the part will increase the engaging force applied against the
fixed structure when moved along the formation in one
direction.
Subclass:
377
Actuated by human operator:
This subclass is indented under subclass 359. Retaining,
halting, or retarding means in which the relatively movable
engaging part has its operation induced by force applied to
it by an individual.
Subclass:
378
And interlocking with complementary stationary formation:
This subclass is indented under subclass 377. Retaining,
halting, or retarding means wherein the relatively movable
engaging part engages a corresponding surface configuration
on fixed structure located along or forming a portion of the
shaft* to retain, halt, or retard the load-underlying
surface.
Subclass:
379
Pivotally attached contact component:
This subclass is indented under subclass 377. Retaining,
halting, or retarding means in which the relatively movable
engaging part is connected to the load-underlying support
surface in a manner allowing it to both (a) swing in an
arcuate path partially about a constantly contacted
connection point or region which travels with the support
surface and (b) maintain movement between the part and
connection at their contact point or region.
(1) Note. Patents with an engaging part which revolves
completely around the contacted point or region (e.g., a
rotating guide wheel with a brake) are not proper for this
and the indented subclasses and are found in subclass 377.
Subclass:
380
WITH CALL REGISTRATION MEANS:
This subclass is indented under the class definition.
Subject matter provided with means which receives, processes,
and stores or cancels requests (i.e., car calls, hall calls)
by individuals for elevator service to change their
landing*.
SEE OR SEARCH CLASS:
361, Electricity: Electrical Systems and Devices, 139 for
relay control systems.
Subclass:
381
Having call cancel or refuse feature:
This subclass is indented under subclass 380. Subject matter
in which the service request means has means to either
nullify, reject, or prevent the processing of a service
request.
Subclass:
382
Shared by plural load supports:
This subclass is indented under subclass 380. Subject matter
in which a single means handles all service requests for or
from two or more load-underlying support surfaces and
coordinates their operation.
Subclass:
383
Assigns load supports to zones:
This subclass is indented under subclass 382. Subject matter
wherein all the landings* served by the load-underlying
support surfaces are subdivided into small regions of
adjoining landings* and the service request handling means
either (a) restricts a load-underlying support surface to
servicing only one of these smaller regions or (b) allows a
load-underlying support surface to respond to service request
only from one of these specified smaller regions.
Subclass:
384
Having security or priority preemption feature:
This subclass is indented under subclass 382. Subject matter
having means to either (a) refuse an unauthorized or accept
an authorized request from an individual or (b) alter the
normal precedence for processing a service request from an
individual.
Subclass:
385
Dispatches load supports from designated landing:
This subclass is indented under subclass 382. Subject matter
wherein the service request handling means also restricts the
load-underlying support surface to a single landing* when not
in use and permits the idle load-underlying support surfaces
to travel therefrom only when service is requested to another
landing* or another condition in a preexisting service plan
is met.
Subclass:
386
Frequency based on interval of time:
This subclass is indented under subclass 385. Subject matter
having preexisting service plan which requires the passing of
a particular amount of time before an idle load-underlying
support surface may travel from the landing*.
(1) Note. The amount of time may either be fixed or changed
periodically based on another factor (e.g., time of day).
Subclass:
387
Assigns calls to load supports on predetermined basis:
This subclass is indented under subclass 382. Subject matter
wherein the service request handling means directly selects
an individual load-underlying support surface of the group to
respond to the request for service from a landing* based on a
preexisting selection plan.
Subclass:
388
Also directs response:
This subclass is indented under subclass 380. Subject matter
wherein the means for handling service request also sends the
load-underlying support surface to a landing* in answer to
the request.
Subclass:
389
Includes specific floor selector:
This subclass is indented under subclass 380. Subject matter
including a particular device for either (a) causing the
load-underlying support surface to be stopped at a landing*
or (b) signaling an individual controlling the operation of
the load-underlying support surface to stop it at a landing*
in response to a request for service.
Subclass:
390
ALARM SYSTEM:
This subclass is indented under the class definition.
Subject matter which includes means to detect a dangerous
condition and signal a warning in response thereto.
SEE OR SEARCH CLASS:
116, Signals and Indicators, subclass 68 for a mechanical
alarm, per se, actuated by the motion of an elevator.
340, Communications: Electrical, 500 for an electrical
alarm system, per se.
Subclass:
391
WITH MONITORING, SIGNALLING, AND INDICATING MEANS:
This subclass is indented under the class definition.
Subject matter provided with means which senses or keeps
track of a physical condition important to the operation of
the elevator and transmits notice of a change in this
condition to a communication device designed to inform either
an individual or a central processor of the change.
SEE OR SEARCH CLASS:
116, Signals and Indicators, subclass 64 for mechanical
means for signaling the elevator car from different floors.
362, Illumination, subclass 481 for means for lighting an
elevator threshold.
369, Dynamic Information Storage or Retrieval, subclass 21
for control of a dynamic recording or reporting means by a
named elevator absent any specific elevator structure or
elevator control, and subclass 69 for a recording or
reporting device combined with a named elevator absent any
specific elevator structure or control.
Subclass:
392
Monitors passengers:
This subclass is indented under subclass 391. Subject matter
wherein the physical condition checked or sensed is related
to an individual riding, or waiting at a landing* to ride,
the load-underlying support surface.
Subclass:
393
Monitors operational parameter:
This subclass is indented under subclass 391. Subject matter
wherein the physical condition checked or sensed is one which
it is essential for anyone maintaining or using the elevator
to know for the safe or proper functioning of the elevator
(e.g., position, speed, direction).
Subclass:
394
Load support position:
This subclass is indented under subclass 393. Subject matter
in which the location of the load-underlying support surface
along the shaft* is the physical condition checked.
Subclass:
395
HAVING CALL BUTTON WITH INDICATOR:
This subclass is indented under the class definition.
Subject matter having a device (e.g., push button) used by an
individual to request elevator service which is provided with
communication means (e.g., it lights up when request is
recorded) informing the same individual that load-underlying
support surface will be responding.
SEE OR SEARCH CLASS:
200, Electricity: Circuit Makers and Breakers, appropriate
subclasses for mechanical switches, per se.
Subclass:
396
GENERAL INFORMATION DISPLAY (E.G., STORE DIRECTORIES):
This subclass is indented under the class definition.
Subject matter which includes either (a) means for
communicating both knowledge necessary to the operation of an
elevator and knowledge (e.g., advertising) which is not
limited in its useful application to an individual using an
elevator or (b) means having its operation caused or modified
by an elevator, which communicates knowledge (e.g.,
advertising) not limited in its useful application to an
individual using an elevator.
SEE OR SEARCH CLASS:
40, Card, Picture, Sign Exhibiting, 446 for a changing
exhibitor, subclasses 541+ for an illuminated directory, and
subclass 585 for a sign type directory.
340, Communications: Electrical, 815.01 for electrical
visual display means other than those changing the operation
of the elevator or those having their operation or
information modified by an elevator.
Subclass:
397
WITH VISUAL INDICATOR OF MOVEMENT OF LOAD SUPPORT:
This subclass is indented under the class definition.
Subject matter provided with means for exhibiting to the view
of an individual a read-out showing some facet of the motion
or travel of the load-underlying support surface.
SEE OR SEARCH CLASS:
116, Signals and Indicators, subclass 226 for mechanical
means for indicating the position of an elevator car.
340, Communication: Electrical, 815.01 for a visual
indicator, per se, and subclasses 286.01+ for a visual
indicator in a communication system other than the type used
with an elevator.
Subclass:
398
Indicates particular one of plural load supports responding:
This subclass is indented under subclass 397. Exhibiting
means which shows the specific one of several load-underlying
support surfaces which will answer a request for service made
from any given landing*.
Subclass:
399
Indicates existing location:
This subclass is indented under subclass 397. Exhibiting
means which shows the current position in the shaft* of, or
the landing* nearest to, the load-underlying support
surface.
SEE OR SEARCH CLASS:
116, Signals and Indicators, subclass 226 for mechanical
means indicating the position of an elevator within its
shaft.
Subclass:
400
WITH SAFETY OR SEALING MEANS FOR GAP BETWEEN LOAD SUPPORT AND
LANDING:
This subclass is indented under the class definition.
Subject matter provided with means attached to the
load-underlying support surface, landing* or shaft* of the
elevator which alleviates, prevents, or restricts the
accidental, harmful, or unwanted (a) passage of a substance
(e.g., gas, dirt) or (b) intrusion of a portion of a
passenger or cargo (e.g., hand, chair leg) into the space
between the landing* and load-underlying support surface.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, 303 for a closure
movement actuated retractable sealing, guiding, or locking
strip and subclasses 316+ for an operator for a retractable
sealing, guiding, or locking strip.
Subclass:
401
HAVING SPECIFIC LOAD SUPPORT STRUCTURE OR ARRANGEMENT (E.G.,
CAR FRAMING):
This subclass is indented under the class definition.
Subject matter having a particular structural aspect of the
load-underlying, support surface of the elevator (e.g.,
framing, shape, flooring) detailed.
(1) Note. The line between an elevator or industrial lift
truck proper for this and the indented subclasses and one
proper for Class 414, Material or Article Handling, is as
follows: (a) This subclass and its indents provide for an
elevator or industrial lift truck or component thereof when
the load is shifted in its entirety in a primary lifting
direction from one level to another vertically spaced level
and may additionally include (1) mere pivoting or tilting of
the load supporting structure for detachment or storage or
(2) retaining of a received load on the support surface; and
(b) Class 414 provides for load engaging structure in which
the load support surface travels in a generally vertical
primary lift direction and (1) is mounted for movement in a
direction other than the primary lift direction (e.g.,
tilting) or (2) has an additional load handling structure
(e.g., conveyor) or (3) is constructed in such a manner that
the load support surface is inherently self-charged or
self-discharged along the primary lift direction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
216 for specific vehicle-underlying support structure for a
roadway vehicle lift.
237 for specific load support structure for an industrial
lift truck.
SEE OR SEARCH CLASS:
294, Handling: Hand and Hoist-Line Implements, 67.1 for a
load supporting frame attached to a hoist-line.
312, Supports: Cabinet Structure, subclass 247 for a
vertically movable cabinet mounted on the wall or ceiling of
a room.
414, Material or Article Handling, 592 for a load-underlying
support surface for an elevator, or industrial lift truck
having an additional load handling feature.
Subclass:
402
Arranged to carry masonry hod:
This subclass is indented under subclass 401.
Load-underlying, support surface particularly constructed to
support between the entrance and exit levels of the elevator
a tray or container attached to a pole type handle which is
intended to carry a load of building material (e.g., brick)
used by a mason.
Subclass:
403
With means for engaging wheels of carried vehicle:
This subclass is indented under subclass 401.
Load-underlying, support surface provided with means which
contacts the wheels of a vehicle positioned on the support
surface while it travels between its entrance and exit
levels.
SEE OR SEARCH THIS CLASS, SUBCLASS:
217 for a stationary lift for a roadway vehicle having
vehicle-underlying support structure with a movable stop
which engages a wheel of the vehicle.
SEE OR SEARCH CLASS:
104, Railways, 127 for an elevator having its operation
interconnected with that of an elevated railway.
410, Freight Accommodation on Freight Carrier, 7 for means
for retaining a vehicle type load on a freight carrier.
Subclass:
404
HAVING SPECIFIC COUNTERBALANCE MEANS FOR LOAD SUPPORT:
This subclass is indented under the class definition.
Subject matter having a particular structural aspect of means
detailed which is structurally linked to and mitigates the
effect of either (a) gravitational force on or (b) the
driving force exerted by the drive-means* on the
load-underlying support surface in at least one direction of
its travel within the shaft* by opposing those forces with a
resistance tending to balance them.
SEE OR SEARCH THIS CLASS, SUBCLASS:
406 for specific stationary guiding structure for a
counterbalance means.
SEE OR SEARCH CLASS:
16, Miscellaneous Hardware, 193 for counterbalance means for
a door or window respectively and subclasses 400+ for a
counterbalance device, per se.
104, Railways, subclass 174 for a counterbalance system used
in railway traction and subclass 254 for a counterweighted
bumper.
Subclass:
405
Includes variable weight:
This subclass is indented under subclass 404. Subject matter
wherein the means for resisting the gravitational or driving
force on the load-underlying support surface includes
structure capable of having its weight changed by the
addition or removal of material to thereby increase or
decrease the amount of resistance to the travel of the
load-underlying support surface.
Subclass:
406
HAVING SPECIFIC STATIONARY GUIDING STRUCTURE FOR
COUNTERBALANCE MEANS OR LOAD SUPPORT:
This subclass is indented under the class definition.
Subject matter having a particular aspect (e.g., cross
section) of the immovable structure which contacts and limits
the travel of (a) a weight designed to at least partially
balance or counteract the weight of the load-underlying
support surface or (b) the load-underlying support surface of
the elevator to a fixed path detailed.
SEE OR SEARCH CLASS:
184, Lubrication, 21 for a device mounted on an elevator car
which lubricates its guiding structure.
Subclass:
407
Formed from cable:
This subclass is indented under subclass 406. Subject matter
in which the path limiting structure is constructed from a
cable*.
Subclass:
408
And mounting means therefor:
This subclass is indented under subclass 406. Subject matter
having means for attaching the path limiting means to the
elevator shaft*.
Subclass:
409
HAVING SPECIFIC GUIDE SHOE:
This subclass is indented under the class definition.
Subject matter having a particular structural aspect (e.g.,
shape) of a device mounted on the load-underlying support
surface and bodily traveling therewith detailed which is
intended to contact and slide along the rigid or semirigid
means limiting the travel of the load-underlying support
surface of the elevator to a fixed vertical path.
Subclass:
410
With roller:
This subclass is indented under subclass 409. Subject matter
wherein the device is provided with at least one revolvably
mounted wheel or caster to reduce friction between the device
and the path limiting means.
Subclass:
411
HAVING SPECIFIC FORCE TRANSMITTING CONNECTION FOR
COUNTERWEIGHT OR LOAD SUPPORT:
This subclass is indented under the class definition.
Subject matter having a particular structural aspect of a
device detailed for attaching either (a) drive-means* to the
load-underlying support surface of the elevator, (b) a weight
designed to at least partially balance or counteract the
weight of the load-underlying support surface to structure
linking the weight to the support surface, or (c) the
load-underlying support surface to structure linking it to a
weight designed to at least partially balance or counteract
the weight of the support surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
349 for an attaching means which releases the
load-underlying support surface from the drive-means* in
response to a particular condition.
SEE OR SEARCH CLASS:
24, Buckles, Buttons, Clasps, etc., 115 for a cord or rope
holder per se which connects a cord or rope to a structure.
Subclass:
412
Equalizes tension in, or length of, plural linking cables:
This subclass is indented under subclass 411. Attaching
device which attaches two or more cables to the
load-underlying support surface or weight at a common
location and is constructed to maintain the cables at the
same degree of tautness or at the same length.
Subclass:
413
HAVING SPECIFIC ARRANGEMENT OR CONNECTION OF ELECTRICAL OR
FLUID SERVICE LINE:
This subclass is indented under the class definition.
Subject matter having (1) a particular aspect of structure
within the shaft* detailed which limits the path of or (2) a
particular aspect of a device used to attach a portion of
either (a) a wire which carries electric current or (b) a
pipe which carries fluid under pressure to the
load-underlying support surface.
SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators, 68.1 for
electrical conductors, per se.
248, Supports, 49 for a pipe or cable support which is not
combined with more than named elevator structure.
285, Pipe Joints or couplings, appropriate subclasses for a
pipe attaching device which is not combined with more than
named elevator structure.
439, Electrical Connectors, appropriate subclasses for a
connector for attaching an electric wire which is not
combined with more than named elevator structure.
Subclass:
414
MISCELLANEOUS:
This subclass is indented under the class definition.
Subject matter not provided for in another subclass.
CROSS-REFERENCE ART COLLECTIONS
Subclass:
900
TEMPORARY CONSTRUCTION ELEVATOR FOR BUILDING:
A collection of art disclosing a useful detail of an elevator
intended to be nonpermanently located at a site and to move
building material to its final landing* within an insitu
structure during the erection of the structure.
Subclass:
901
CONTROL MODIFIED FOR USE BY DISABLED INDIVIDUAL:
A collection of art disclosing a control* which regulates the
operation of a component of an elevator (e.g., door) and has
a specific feature adapting it for use by a person having
some physical problem which prohibits or restricts the
ability of the person to operate a standard control.
Subclass:
902
CONTROL FOR DOUBLE-DECKER CAR:
A collection of art disclosing a control* which regulates the
operation of an elevator car having two distinct passenger
compartments located at different vertical levels.
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