US PATENT SUBCLASS 254 / 377
.~.~.~ Fluid resistance brake

Current as of: June, 1999
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254 /   HD   IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE

264  DF  APPARATUS FOR HAULING OR HOISTING LOAD, INCLUDING DRIVEN DEVICE WHICH CONTACTS AND PULLS ON CABLE {4}
266  DF  .~ Device includes rotatably driven, cable contacting drum {34}
375  DF  .~.~ Including means for preventing or retarding rotation of drum in at least one direction {3}
377.~.~.~ Fluid resistance brake

DEFINITION

Classification: 254/377

Fluid resistance brake:

(under subclass 375) Apparatus wherein the means consist of a

brake which utilizes the resistance force of a fluid against a portion of the brake structure to oppose the rotation of the drum.

SEE OR SEARCH CLASS

182, Fire Escape, Ladder, or Scaffold,

233, and 238 for a reel having a strand wound on it which is used in an occupant lowering fire escape and includes a fluid resistance brake for retarding the unwinding of the strand from the reel.

188, Brakes,

266+, for internal resistance motion retarders.