US PATENT SUBCLASS 411 / 448
.~.~.~ Expansible on impact

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

439  DF  IMPACT DRIVEN FASTENER, E.G., NAIL, SPIKE, TACK, ETC. {13}
446  DF  .~ Including integral locking means {3}
447  DF  .~.~ Comprising deformable portion {1}
448.~.~.~ Expansible on impact {1}
449  DF  .~.~.~.~> Axially collapsible section

DEFINITION

Classification: 411/448

Expansible on impact:

(under subclass 447) Subject matter wherein the alterable portion is radially expandable in response to the axially applied force.

(1) Note. The axially applied force will simultaneously cause radially expansion of the deformable portion while causing the fastener to penetrate the material, substructure, or other work to be fastened.