Furniture anti-tip and lock mechanism

Details Furniture anti-tip and lock mechanism Furniture anti-tip and lock mechanism

1988-02-03

1989-06-13

Falk, Joseph

Supports: cabinet structure

Gang-bar type locking or latching means

Concealed

292140, E05C 706

Patent

active

048386243

ABSTRACT:
An improvement in an actuator of the type having a slide plate with an L-shaped slot, guide structure for movement of the slide plate in a reciprocating path between locked and unlocked positions, structure for connecting the slide plate to a locking member so that the locking member follows reciprocating movement of the slide plate, a crank for rotation about an axis and having a pin offset from the axis, and structure mounting the crank to the channel so that the crank is rotatable back and forth about its axis through a predetermined range with the pin in the slot to thereby cause the pin to engage and shift the slide plate between its locked position and its unlocked position upon the crank being rotated. With the pin at the juncture of the two slot legs, the slide bar can be shifted to its unlocked position without rotating the crank. With the pin so situated and all drawers closed, the crank is jammed and cannot be rotated. Structure is provided to permit rotation of the crank with the pin otherwise situated in its jammed position. To accomplish this, the slide plate has a deflectable tab with transverse edges bounding a portion of the L-shaped slot. The crank can be rotated in one direction to thereby move the pin from its jammed position at the bottom of the vertical slot leg against the tab, which is thereby deformed to allow passage of the pin into the horizontal slot leg. Thereafter, the crank can be rotated opposite to the one direction to normally move the slide plate and associated locking bar to its open position.

REFERENCES:
patent: 1462805 (1923-07-01), Gibson
patent: 4609233 (1986-09-01), Walla

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