Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having structure to restrict rotation of threaded – mating... – Comprising a thread lock
Patent
1988-01-11
1989-05-23
Gall, Lloyd A.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having structure to restrict rotation of threaded, mating...
Comprising a thread lock
4034071, 411324, 411369, 411437, 411542, F16B 39284
Patent
active
048325511
ABSTRACT:
A fastener for releasably securing an object to a panel having a hole therethrough comprises a screw having a screw head attached to the object and having a threaded screw shank insertable through the hole in the panel. The fastener further comprises a flexible resilient plastic push-on/screw-off nut having a bore therethrough which is slidably mountable onto the threaded screw shank into engagement with the panel. The nut has a resilient flexible concave nut head which operates to seal the panel hole and has a nut shank defining two resilient flexible legs, each of which has internal nut threads for engaging the threaded screw shank. The nut also comprises webs, each connected between the nut head and the outer side of a leg, which operate to force the nut threads tightly against the screw thread in locking engagement when the nut head is forced against the panel. The nut is removable from the screw by rotation in a conventional manner. The fastener also comprises an optionally usable washer which is disposed between the screw head and the panel and operates to further seal the panel hole.
REFERENCES:
patent: 168597 (1875-10-01), Atwood
patent: 929027 (1909-07-01), Schumann
patent: 2364668 (1944-12-01), Simmons
patent: 2400072 (1946-05-01), Burke
patent: 3001567 (1961-09-01), Brill
patent: 3670917 (1972-06-01), Nishimaki et al.
patent: 4236561 (1980-12-01), Monticelli
patent: 4435111 (1984-03-01), Mizusawa
patent: 4600344 (1986-07-01), Sutenbach et al.
patent: 4756654 (1988-07-01), Clough
Brueske Curtis B.
Gall Lloyd A.
Kirby Thomas F.
Nilles James E.
Phillips Plastics Corporation
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