Screw-locking device

Details Screw-locking device Screw-locking device

1976-04-14

1978-05-30

Britts, Ramon S.

Brushing, scrubbing, and general cleaning

F16B 3924

Patent

active

040918530

ABSTRACT:
A screw-locking device has a stamped cup spring with a solid annular core having closely spaced triangular radial ribs top and bottom. The distance from the peaks of the ribs from the center plane of the core continually decreases from the outer rim of the annular spring towards the inner rim.

REFERENCES:
patent: 299987 (1884-06-01), Jordan
patent: 813714 (1906-02-01), Ketcham
patent: 1162566 (1915-11-01), Bushyeager
patent: 2783810 (1957-03-01), Wrigley
patent: 3077218 (1963-02-01), Ziegler
patent: 3329190 (1967-07-01), Oldenkott
patent: 3389734 (1968-06-01), Gutshall
patent: 3605845 (1971-09-01), Junker
patent: 3825051 (1974-07-01), Sigmund

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