US PATENT SUBCLASS 411 / 937.1
.~.~.~ Predistorted 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}
937.1.~.~.~ Predistorted thread pitch or diameter

DEFINITION

Classification: 411/937.1

Predistorted thread pitch or diameter:

Art collection under art collection 937 in which either the thread pitch of the nut or the diameter of the nut is distorted prior to the assembly of the nut to the bolt.