US PATENT SUBCLASS 411 / 541
.~.~ Secured by plastic deformation

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

531  DF  WASHER STRUCTURE {11}
539  DF  .~ Radially positionable {2}
541.~.~ Secured by plastic deformation

DEFINITION

Classification: 411/541

Secured by plastic deformation:

(under subclass 539) Subject matter wherein the element is altered in shape after being positioned about a shank of a fastener.