US PATENT SUBCLASS 188 / 272
.~ Combined with mechanism retarded by brake


Current as of: June, 1999
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188 /   HD   BRAKES

266  DF  INTERNAL-RESISTANCE MOTION RETARDER {29}
272.~ Combined with mechanism retarded by brake {1}
273  DF  .~.~> Restricting exhaust from engine


DEFINITION

Classification: 188/272

(under subclass 266) Internal-resistance brake combined with the moving mechanism that causes the motion which is to be restrained by the brake; the combination being not otherwise provided for.

(1) Note. The devices in this and indented subclasses are those wherein the mechanism is not significant (therefore the device is not proper for the class wherein other such mechanisms are found) and wherein the proper class for such mechanism, per se, does not provide for the combination of mechanism and motion-retarder therefor. See the Search Class Notes below for a partial listing of classes providing for such combination.

(2) Note. It is customary for a motor vehicle to have included therein a shock absorber of an appropriate subclass of 266+. Therefore the "combination" of a vehicle and shock absorber will be found in the subclass pertaining to the shock absorber, per se, unless significant vehicle structure warrants classification of the device in an appropriate vehicle class.

SEE OR SEARCH CLASS

4, Baths, Closets, Sinks, and Spittoons,

248, for buffer and dashpot structure. 16, Miscellaneous Hardware,

84, for a pneumatic closure check.

73, Measuring and Testing,

862.09+, for a torque absorbing dynamometer using fluid, and subclass 430, for an instrument mechanism damping device.

104, Railways,

256, for a fluid-pressure car-stopping bumper.

105, Railway Rolling Stock,

193, for a bogie bolster damper.

123, Internal-Combustion Engines,

323, for a significant charge-proportion-varying internal combustion engine having braking means therefor including exhaust restricting means.

137, Fluid Handling,

514+, for a valve having a dashpot thereon to retard its actuation. 177, Weighing Scales,

184+, for a weighing scale having a shock absorber or damper.

187, Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle,

344, and subclasses 345+, for an elevator having a fluid governor.

200, Electricity: Circuit Makers and Breakers,

34, for a dashpot in a circuit maker.

244, Aeronautics,

110+, for aircraft arresting gear including fluid resistance means.

251, Valves and Valve Actuation,

48+, for a valve retarded by a dashpot.

254, Implements or Apparatus for Applying Pushing or Pulling

Force, 377, for a cable drum retarded by a fluid resistance brake.

280, Land Vehicles,

89.11, for a general utility wheeled land vehicle including occupant controlled steering of laterally opposed, stub axle supported, steerable road wheels provided with means for returning the steerable road wheels to a center or neutral angulation which may or may not be fluid operated; subclass 89.13 for a fluid positioning device employed in conjunction with the tie rod interconnecting laterally opposed steerable stub axles not returning the steerable road wheels to a center or neutral angulation; or subclass 90 for a general utility wheeled land vehicle including occupant controlled steering having fluid positioning devices not limited to laterally opposed stub axle supported steerable road wheels.

297, Chairs and Seats,

470+, for a body restrainer having an energy-absorbing device.

314, Electric Lamp and Discharge Devices: Consumable Electrodes,

99+, for a movable electrode having a dashpot for retarding motion thereof.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

29, 61 and 240, for a switch having a dashpot.

475, Planetary Gear Transmission Systems or Components,

31+, for planetary gearing associated with a fluid brake.