US PATENT SUBCLASS 188 / 78
.~.~ Expanding

Current as of: June, 1999
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188 /   HD   BRAKES

*  DD  WHEEL {10}
74  DF  .~ Transversely movable {4}
78.~.~ Expanding {9}
79  DF  .~.~.~> Multiple sets
323  DF  .~.~.~> Three shoes {1}
325  DF  .~.~.~> Two shoes {4}
335  DF  .~.~.~> Radially guided shoe
336  DF  .~.~.~> Continuous split band {2}
340  DF  .~.~.~> Lateral guide for shoe
341  DF  .~.~.~> Anchor
342  DF  .~.~.~> Self-energizing
343  DF  .~.~.~> Wedge operator

DEFINITION

Classification: 188/78

Brakes moving transversely to and away from the axis and partially or wholly encircling the inner rim of the wheel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

135+, and especially subclasses 140+, for brakes, the braking action of which is due to the momentum of the machine to which the brake is applied.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

567+, for the structure of cam elements, per se.