US PATENT SUBCLASS 411 / 347
.~ Headed fastener element with securing means and biasing spring

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

337  DF  HEADED FASTENER ELEMENT WITH NUT, WASHER, SECURING MEANS OR CAP {12}
347.~ Headed fastener element with securing means and biasing spring {2}
348  DF  .~.~> Ball detent securing means
349  DF  .~.~> Securing means rotatable about fastener element or rotatably engageable by tool-rotatable headed fastener element {3}

DEFINITION

Classification: 411/347

Securing means having biasing spring:

(under subclass 337) Subject matter further provided with an elastic structure tending to return to its normal shape after being distorted.