US PATENT SUBCLASS 411 / 555
.~.~.~.~ Through-slot for engagement with crossbar

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  DF  .~ Headed fastener element with securing means and biasing spring {2}
349  DF  .~.~ Securing means rotatable about fastener element or rotatably engageable by tool-rotatable headed fastener element {3}
554  DF  .~.~.~ Helically slotted securing means having cooperating engaging portion on socket member {1}
555.~.~.~.~ Through-slot for engagement with crossbar

DEFINITION

Classification: 411/555

Through-slot for engagement with crossbar:

(under subclass 554) Subject matter wherein the recess extends transverse to and entirely through the shank of the headed elongated fastening means and the cooperating structure on the socket member comprises a rod entirely transversing a shank receiving opening in the socket member.

CROSS-REFERENCE ART COLLECTIONS

The patents in the following collections have been placed without regard to their original classification or to their claimed subject matter and are therefore not exhaustive of the art subject matter but are only example of the art.