US PATENT SUBCLASS 411 / 931
.~.~ Superposed nuts

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}
931.~.~ Superposed nuts {1}
932  DF  .~.~.~> Oppositely threaded {1}

DEFINITION

Classification: 411/931

Superposed Nuts:

Art collection under art collection 929 in which more than one nut is placed on a bolt wherein the other nut having some special construction or adjunct whereby it is adapted to lock the other nut.

(1) Note. Jam-nuts are included only when they are especially adapted to serve as jam-nuts.