US PATENT SUBCLASS 172 / 270
.~ Friction lock

Current as of: June, 1999
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172 /   HD   EARTH WORKING

261  DF  OVERLOAD SHIFTING {6}
270.~ Friction lock

DEFINITION

Classification: 172/270

(under subclass 261) Apparatus wherein a friction clamp is employed to rigidly hold the element in place until a predetermined overload occurs.

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269, for an element held in position by a resilient latch which yields upon overload to permit the element to shift.

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464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts,

30+, for friction drive connections in rotary drive overload release devices.