US PATENT SUBCLASS 411 / 960
.~.~ Friction

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}
960.~.~ Friction

DEFINITION

Classification: 411/960

Friction:

Art collection under art collection 956 wherein the device is held from rotation solely by the pressure between the substructure and the face of the device adjacent thereto.