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
1980-08-22
1983-03-22
Holko, Thomas J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Member or portion thereof located between substructure and...
411162, 411164, 411188, 411332, F16B 3924
Patent
active
043773613
ABSTRACT:
A reversible lock washer having oppositely disposed cam surfaces adapted for use in combination with a threaded fastener of the type wherein a screw head or nut includes at least one cam surface arranged to engage at least one cam-engaging surface of the reversible lock washer, the cam surfaces of the washer being formed on the inner recessed ring of the washer body. The washer body includes an outer raised peripheral ring having a frictional surface formed on the opposite sides thereof, whereby the washer body is provided with a pair of identical cam and frictional surfaces, thus allowing the washer to be positioned randomly between the engageable cam surface of the nut or screw head and the respective workpiece which is engaged by the frictional surface of the outer peripheral ring, and wherein one arrangement of the nut includes two oppositely disposed reversible cam surfaces, whereby it too can be randomly positioned over the reversible lock washer.
REFERENCES:
patent: 299287 (1884-06-01), Jordan
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patent: 884933 (1908-04-01), Kesler
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patent: 3967083 (1976-06-01), Bould et al.
patent: 4034788 (1977-07-01), Melone
patent: 4134438 (1979-01-01), Frieberg et al.
Holko Thomas J.
Lojacono Francis X.
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