Waterproof screw fastener

Details Waterproof screw fastener Waterproof screw fastener

1991-09-03

1992-10-20

Lindsey, Rodney M.

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

411371, 411377, 411402, 411542, 411915, F16B 3300

Patent

active

051565099

ABSTRACT:
A waterproof screw fastener includes a head having a top and a bottom end, and a threaded shank downwardly extending from the bottom end of the head. The bottom end of the head has an indentation around the threaded shank. A sealing washer is sleeved onto the threaded shank and received in the indentation of the bottom end of the head.

REFERENCES:
patent: 641191 (1900-01-01), Champion
patent: 3087370 (1963-04-01), Iaia
patent: 3202033 (1965-08-01), Weidner, Jr.
patent: 3247752 (1966-04-01), Greenleaf et al.
patent: 3452636 (1969-07-01), Cohen et al.
patent: 3656396 (1972-04-01), Gutshall
patent: 3897712 (1975-08-01), Black
patent: 4084478 (1978-04-01), Simmons
patent: 4295767 (1981-10-01), Temple, Jr.
patent: 4373842 (1983-02-01), Bettini et al.
patent: 4749321 (1988-06-01), Knohl et al.
patent: 4887951 (1989-12-01), Hashimoto

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