US PATENT SUBCLASS 411 / 411
.~ Thread or 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.~ Thread or shank structure {7}
412  DF  .~.~> Plural threads on single shank {1}
414  DF  .~.~> Buttress thread
415  DF  .~.~> Of varying thread pitch
416  DF  .~.~> Lobular thread
417  DF  .~.~> Circumferentially interrupted thread {2}
423  DF  .~.~> Truncated thread
424  DF  .~.~> Shank structure {2}

DEFINITION

Classification: 411/411

Thread or shank structure:

(under subclass 378) Subject matter wherein significance is attributed to either that portion of the fastening means between a head and the helical ridge, i.e., the shank or the helical ridge.