US PATENT SUBCLASS 411 / 937.2
.~.~.~ Post-distorted thread pitch or diameter

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}
937  DF  .~.~ Distorted nut {2}
937.2.~.~.~ Post-distorted thread pitch or diameter

DEFINITION

Classification: 411/937.2

Post-distorted thread pitch or diameter:

(under subclass 937) Art collection of fasteners in which either the nut thread pitch or its diameter is distorted after the nut has been applied to the bolt.