US PATENT SUBCLASS 411 / 40
.~.~ Frangibly connected expander

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}
40.~.~ Frangibly connected expander {1}
41  DF  .~.~.~> Projecting outwardly from head

DEFINITION

Classification: 411/40

Frangibly connected expander:

(under subclass 39) Subject matter wherein a connection between the expander element and the remainder of the holding device or anchor defines a weakened area which fractures in response to a predetermined force.