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
1993-07-19
1994-04-26
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
411542, 411915, F16B 3300, F16B 4302
Patent
active
053061080
ABSTRACT:
A self-sealing washer for use on a fluid containing housing includes a semi-rigid circular member having a horizontal portion and a relatively short vertical portion disposed at the distal edge thereof suitable to be received into a channel provided on a flat surface of the housing. The horizontal portion of the circular member includes a centrally disposed through aperture to receive the screw therein, the screw has a relatively large head portion. A first elevation portion is provided on the circular member which is disposed remote from the distal edge and a second elevation portion generally centrally disposed within the first elevation portion which terminates in a relatively sharp edge. Preferably the second elevation portion is higher than the first elevation portion.
REFERENCES:
patent: 4280390 (1981-07-01), Murray
patent: 5011162 (1991-04-01), Jelinek
patent: 5188495 (1993-02-01), Jones, Jr.
patent: 5201625 (1993-04-01), Takenouchi et al.
Mechanical Manufacturing Corp.
Wilson Neill R.
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