US PATENT SUBCLASS 411 / 36
.~.~ Twistable sleeve

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}
34  DF  .~ Bulged by axially contracting ends {4}
36.~.~ Twistable sleeve

DEFINITION

Classification: 411/36

Twistable sleeve:

(under subclass 34) Subject matter wherein the holding device or anchor is in the form of a generally tubular member one end of which is caused to turn relative to its other end when the member is bulged.