Hinge lock mechanism for folding table leg

Details Hinge lock mechanism for folding table leg Hinge lock mechanism for folding table leg

1974-11-13

1976-03-23

Frazier, Roy D.

Horizontally supported planar surfaces

Folding

Legs fold axially parallel to surface edges

A47B 308

Patent

active

039453286

ABSTRACT:
The crank arm of a hinge lock mechanism acts as an over-center latch for a folding leg when the leg is in its extended position perpendicular to the table top and also in its retracted position parallel to the table top. The crank arm is pivotally connected at one end to a support plate on the bottom of the table and is pivotally linked to a support arm on the folding leg. When the crank arm is rotated downwardly, it moves the folding leg far enough away from an apron or abutment so that the leg can be manually swung from its extended position to its retracted position and vice versa. The crank arm is subsequently rotated back to its upper limit in either case to latch the leg in position. The hinge lock mechanism is entirely hidden from view by aprons when the table is upright.

REFERENCES:
patent: 2075778 (1937-03-01), Johannsen
patent: 2657963 (1953-11-01), Fox
patent: 2860940 (1958-11-01), DeSaussure
patent: 3554141 (1971-01-01), Burr
patent: 3662694 (1972-05-01), Mitchell

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