US PATENT SUBCLASS 411 / 424
.~.~ Shank structure

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

378  DF  EXTERNALLY THREADED FASTENER ELEMENT, E.G., BOLT, SCREW, ETC. {16}
411  DF  .~ Thread or shank structure {7}
424.~.~ Shank structure {2}
425  DF  .~.~.~> Twisted
426  DF  .~.~.~> Tapered

DEFINITION

Classification: 411/424

Shank structure:

(under subclass 411) Subject matter wherein significance is attributed to that portion of the fastening means between a head and the helical ridge, i.e., a shank.

SEE OR SEARCH THIS CLASS, SUBCLASS:

487+, for shank structure of impact driven fastener.