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
1997-07-11
1999-10-19
Wilson, Neill
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Member or portion thereof located between substructure and...
411135, 411533, 411535, F16B 3100, F16B 3924
Patent
active
059677244
ABSTRACT:
A locking fastener in which coacting ramp surfaces are provided on a nut and washer assembly to generate wedging forces in response to backing off movement of the nut which urge the nut into tighter engagement with the associated bolt and the workpiece and in which a spring member disposed radially from the ramp surfaces is biased by the final relative tightening movement of the nut and washer so as to bias the ramp surfaces for movement in the direction to augment the locking action of the fastener. A torque control fastener is disclosed in which the gap between the adjacent ramp shoulders on the nut and washer is indicative of the torque and the damping force exerted by the fastener.
REFERENCES:
patent: Re33827 (1992-02-01), Terry
patent: 891574 (1908-06-01), Swain
patent: 1139819 (1915-05-01), Smith
patent: 1622581 (1927-03-01), Gunkel
patent: 1746978 (1930-02-01), Winkler
patent: 1966780 (1934-07-01), Wyrick
patent: 3329190 (1967-07-01), Oldenkott
patent: 3438416 (1969-04-01), Thurston
patent: 4538313 (1985-09-01), Frieberg
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