US PATENT SUBCLASS 411 / 978
.~.~ 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}
974  DF  .~ Side lock {7}
978.~.~ Pawl and ratchet

DEFINITION

Classification: 411/978

Pawl and ratchet:

Art collection under art collection 974 wherein the device is locked by a resilient dog against movement in one direction, permitting free movement in the other.