US PATENT SUBCLASS 192 / 84.81
.~.~.~.~ Coil spring

Current as of: June, 1999
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192 /   HD   CLUTCHES AND POWER-STOP CONTROL

30 R  DF  CLUTCHES {15}
82 R  DF  .~ Operators {18}
84.1  DF  .~.~ Electric or magnetic {8}
84.8  DF  .~.~.~ Operator for transversely engaging elements {1}
84.81.~.~.~.~ Coil spring

DEFINITION

Classification: 192/84.81

Coil spring:

(under subclass 84.8) Subject matter, wherein one of the driving and driven clutch parts is an elongated member wound into a helix shape that is adapted to unwind into or out of frictional engagement with the other clutch part.

SEE OR SEARCH THIS CLASS, SUBCLASS:

89.2+, for a spring-engaged operator.