Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Frangible member
Patent
1981-06-10
1983-03-01
Holko, Thomas J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Frangible member
411 45, 411 57, F16B 1304
Patent
active
043753426
ABSTRACT:
A two-piece plastic fastener has a sleeve-like body comprising forwardly projecting flexible legs and having a concentric radially enlarged head at its rear end. Longitudinal slots in the body define the legs and space them apart laterally. A cylindrical plunger, forwardly insertable in the body to an operative position at which it holds the legs forwardly diverged, has two radially outwardly opening circumferential grooves, one near its front end, the other near its rear end. At the rear end of each slot in the body is a detent lug that has its rear end integrally connected with the body to have its front end flexible radially outwardly. These lugs detent-wise engage in the front groove to define a projecting position of the plunger and in the rear groove to define its operative position. Lugs and grooves are so configured as to offer more resistance to rearward than to forward plunger displacement. A concentric head on the rear of the plunger, substantially larger than the body head, is forwardly concave to overlie and conceal the body head when the plunger is in its operative position.
REFERENCES:
patent: 2542144 (1951-02-01), Kearns
patent: 2941439 (1960-06-01), Rapata
patent: 3033624 (1962-05-01), Biesecker
patent: 3074134 (1963-01-01), Buechler
patent: 3147525 (1964-09-01), Teher
patent: 3188905 (1965-06-01), Millet
patent: 3198058 (1965-08-01), Barry
patent: 3385158 (1968-05-01), Morin
patent: 3417438 (1968-12-01), Schulpin
patent: 3918130 (1975-11-01), Poe
patent: 4276806 (1981-07-01), Morel
Schwind Richard J.
Wollar Burnell J.
Holko Thomas J.
Nilles James E.
Phillips Plastic Corp.
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