US PATENT SUBCLASS 411 / 42
.~.~ Sleeve including weakened portion

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

15  DF  HAVING SEPARATE EXPANDER MEANS {13}
39  DF  .~ Frangible member {3}
42.~.~ Sleeve including weakened portion

DEFINITION

Classification: 411/42

Sleeve including weakened portion:

(under subclass 39) Subject matter wherein the holding device or anchor comprises a substantially tubular element which includes a weakened area which fractures in response to a

predetermined force.

SEE OR SEARCH THIS CLASS, SUBCLASS:

449, for an impact driven fastener provided an axially collapsible section provided to secure the fastener.