US PATENT SUBCLASS 411 / 55
.~ Threaded 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}
55.~ Threaded expander

DEFINITION

Classification: 411/55

Threaded expander:

(under subclass 44) Subject matter which includes a mover element wherein the mover element activates the expander by means of threaded engagement therebetween.