US PATENT SUBCLASS 411 / 181
.~.~.~.~ Both cooperating regions deformed

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

81  DF  THREADED FASTENER LOCKED TO A DISCREET STRUCTURE (E.G., PLATE, RAIL, WHEEL) {13}
172  DF  .~ Nut having a portion for attachment to substructure {2}
176  DF  .~.~ Fastener having a deformable portion or deforms substructure (e.g., prong) {3}
177  DF  .~.~.~ Nut assembled to substructure utilizing cooperating regions on both {5}
181.~.~.~.~ Both cooperating regions deformed

DEFINITION

Classification: 411/181

Both cooperating regions deformed:

(under subclass 177) Device wherein the nut and the substructure each include a region which is capable of undergoing a significant change in configuration or shape and wherein the regions coact to undergo such a change as a result of the joining.

(1) Note. The two regions may undergo change simultaneously, or the change may be sequential.