Helical conical spring lock-washer and method of formation there

Details Helical conical spring lock-washer and method of formation there Helical conical spring lock-washer and method of formation there

1979-12-20

1981-11-24

Bonck, Rodney H.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Threaded fastener locked to a discreet structure

Member or portion thereof located between substructure and...

10 86B, 411156, F16B 3924, B21D 5320

Patent

active

043021360

ABSTRACT:
A helical conical spring lock-washer includes a lock-washer body having formed on one surface thereof a plurality of triangular pyramid-shaped depressions. Each of the depressions provides a triangular opening formed on the respective surface of the lock-washer body, with the base of the triangular opening positioned adjacent to the outer margin of the lock-washer body and the apex of the triangular opening directed toward the center of the lock-washer body.

REFERENCES:
patent: 329738 (1885-11-01), Harvey
patent: 1020438 (1912-03-01), Norlund
patent: 2345419 (1944-03-01), Olson
patent: 2624128 (1953-01-01), Phillips
patent: 3097679 (1963-07-01), Jordan
patent: 3221792 (1965-12-01), Poupitch
patent: 3476009 (1969-11-01), Markey
patent: 4103725 (1978-08-01), Abe

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