US PATENT SUBCLASS 188 / 72.7
.~.~.~ By inclined surface (e.g., wedge, cam or screw)

Current as of: June, 1999
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188 /   HD   BRAKES

*  DD  WHEEL {10}
71.1  DF  .~ Axially movable brake element or housing therefor {8}
72.1  DF  .~.~ With means for actuating brake element {5}
72.7.~.~.~ By inclined surface (e.g., wedge, cam or screw) {1}
72.8  DF  .~.~.~.~> Screw or helical cam

DEFINITION

Classification: 188/72.7

(under subclass 72.1) Apparatus wherein said component-pressing means includes a first element moving in a first direction and having a surface angular to said direction, and also includes a second element movable in a second direction and in contact with said surface, whereby movement of said first element in a first direction causes movement of said second element in a second direction.

(1) Note. In the disclosures of this and indented subclasses one or more balls or rollers may be interposed between the first and second elements to reduce friction in the actuator mechanism.