Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Member or portion thereof located between substructure and...
Patent
1989-10-05
1990-07-17
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Member or portion thereof located between substructure and...
411150, 411155, F16B 3924
Patent
active
049417878
ABSTRACT:
A bolt shank and washer have contiguous respective elliptical and circular surfaces that interact to impart an undulated axial distortion to the washer in a circumferentially running sinusoidal way, so that the washer acts in spring-like fashion to lock the bolt in its tightened position. The elliptical surface is tapered outwardly toward the bolt head to give an increased spring constant with increased tightening.
REFERENCES:
patent: 259665 (1882-06-01), Broomall et al.
patent: 1083471 (1914-01-01), Walton et al.
patent: 3241423 (1966-03-01), Davis
patent: 3241589 (1966-03-01), Enders
patent: 3434520 (1969-03-01), Bedford, Jr.
Consulier Industries, Inc.
Franz Warren L.
Wilson Neill R.
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