US PATENT SUBCLASS 411 / 421
.~.~.~.~.~ Helically oriented

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
417  DF  .~.~ Circumferentially interrupted thread {2}
418  DF  .~.~.~ By longitudinal slot {2}
420  DF  .~.~.~.~ Inclined slot {1}
421.~.~.~.~.~ Helically oriented

DEFINITION

Classification: 411/421

Helically oriented:

(under subclass 420) Subject matter wherein the groove slot traces a spiral path about the fastening means.