US PATENT SUBCLASS 411 / 942
.~.~ Tangential key

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

924  DF  COUPLED NUT AND BOLT {13}
929  DF  .~ Thread lock {12}
942.~.~ Tangential key

DEFINITION

Classification: 411/942

Tangential key:

Art collection under art collection 929 in which a special structure is provided in the form of a key in the nut which moves tangentially to the bolt and bites or binds against the threads thereof.