US PATENT SUBCLASS 411 / 961
.~.~ Pawl and ratchet

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}
961.~.~ Pawl and ratchet {2}
962  DF  .~.~.~> Bolthead or nut-carried pawl
963  DF  .~.~.~> Yielding interlocking washer

DEFINITION

Classification: 411/961

Pawl and ratchet:

Art collection under art collection 956 wherein a resiliently urged dog locks the device against movement in one direction permitting free movement in another.