Check rail lock

Details Check rail lock Check rail lock

1987-04-30

1989-01-31

Gall, Lloyd A.

Closure fasteners

Bolts

Swinging

74548, 292209, 292241, 292DIG47, 292DIG61, E05C 304

Patent

active

048011649

ABSTRACT:
A check rail lock having a housing with an interior space which rotatably mounts a shaft connected to a handle and a cam and with stop members associated with the cam and the housing for limiting rotation of the cam between locked and unlocked positions. The cam is releasably held in either of these positions by mounting of a spring washer on the shaft to which the cam is fixed, and with the spring washer and the housing having coacting detent structure which releasably holds the cam in either the locked or unlocked position. The spring is generally concave for predetermined spring loading and has planar sections with detents to assure good engagement with detent notches on the housing.

REFERENCES:
patent: 423761 (1890-03-01), Hasenpflug
patent: 952277 (1910-03-01), Pilarski
patent: 1139575 (1915-05-01), Pitsch
patent: 1203980 (1916-11-01), Clarke
patent: 1575330 (1926-03-01), Goodman
patent: 2258617 (1941-10-01), Knauff
patent: 3119591 (1964-01-01), Malecki
patent: 3135542 (1964-06-01), Wilkinson
patent: 3811718 (1974-05-01), Bates
patent: 3951444 (1976-04-01), Shull
patent: 4436328 (1984-03-01), Chernosky

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