Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Patent
1980-07-28
1983-07-05
Holko, Thomas J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
411 41, 411 60, F16B 1304
Patent
active
043915590
ABSTRACT:
A plastic fastener comprises a female member provided with a flange, a leg extended from the flange and an insertion hole bored longitudinally along the axis of the leg, and a male member provided with a head portion and a shaft portion extended from the head portion and adapted to be inserted into the insertion hole of the female member, whereby panels are brought into tight union. The female member and the male member are provided on the upper surface of the flange and on the lower surface of the head portion respectively with cam faces which are inclined in the circumferential direction around the common axis of the two members and matched so that these are brought into intimate contact at the time of the forced driving of the male member into the female member and, at the time of release of the tight union of the panels, caused to slide on each other by a rotation given to the male member to thereby cause the head portion to be lifted from the upper surface of the flange. Thus, the plastic fastener makes it possible to easily bring the panels into tight union and to readily release the panels from the tight union.
REFERENCES:
patent: 1229562 (1917-06-01), Willetts
patent: 3116528 (1964-01-01), Poe
patent: 3147525 (1964-09-01), Texier
patent: 3417438 (1968-12-01), Schuplin
patent: 4263833 (1981-04-01), Loudin et al.
Buckman Thomas W.
Forsberg Jerold M.
Holko Thomas J.
Nifco Inc.
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