Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Headed bolt or screw with threads and complementary nut
Patent
1991-02-11
1992-06-02
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Headed bolt or screw with threads and complementary nut
411480, 411531, 411533, 411908, 52410, 52512, F16B 3900, F16B 4300
Patent
active
051182351
ABSTRACT:
A washer molded from a polymeric material and useful with a fastener having a head and a shank, such as, for example, a screw or a drive pin, and a fastening assembly comprised of the washer and such a fastener, is disclosed. The fastener head is contained within a washer socket with the fastener shank extending through a washer aperture. An integral flap hinged from a lateral wall portion of the washer socket is used to substantially cover the fastener head. The flap has a curved end, which is adapted to be snap-fitted under a locking formation, comprising a curved lip, formed upon a lateral wall portion of the socket which is disposed opposite the lateral wall portion upon which the flap is hinged.
REFERENCES:
patent: 4214505 (1980-07-01), Aimar
patent: 4380413 (1983-04-01), Dewey
patent: 4686808 (1987-08-01), Triplett
patent: 4884932 (1989-12-01), Meyer
patent: 4900206 (1990-02-01), Kazino et al.
Illinois Tool Works Inc.
Wilson Neill R.
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