US PATENT SUBCLASS 411 / 964
.~.~ Detent

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

955  DF  LOCKED BOLTHEAD OR NUT {7}
956  DF  .~ Automatic base clutch {4}
964.~.~ Detent

DEFINITION

Classification: 411/964

Detent:

Art collection under art collection 956 wherein the interface of the device and either the substructure, or a washer mounted between the device and the substructure is provided with coacting means which are resiliently held interengage, but permit force relative turning in either direction.