US PATENT SUBCLASS 411 / 39
.~ Frangible member

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.~ Frangible member {3}
40  DF  .~.~> Frangibly connected expander {1}
42  DF  .~.~> Sleeve including weakened portion
43  DF  .~.~> Frangible mandrel

DEFINITION

Classification: 411/39

Frangible member:

(under subclass 15) Subject matter wherein a weakened area is provided on the holding device or anchor to facilitate its separation into discrete parts when sufficient force is applied.

SEE OR SEARCH THIS CLASS, SUBCLASS:

476, for a multiple prong impact driven force fastener having a frangible portion.