US PATENT SUBCLASS 411 / 956
.~ Automatic base clutch

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.~ Automatic base clutch {4}
957  DF  .~.~> Biting tooth {2}
960  DF  .~.~> Friction
961  DF  .~.~> Pawl and ratchet {2}
964  DF  .~.~> Detent

DEFINITION

Classification: 411/956

Automatic base clutch:

Art collection under art collection 955 wherein a face of the device adjacent the substructure is gripped thereto by the turning of the device into fastening position.