Multiple-bolt door latch

Details Multiple-bolt door latch Multiple-bolt door latch

1991-06-24

1992-03-17

Moore, Richard E.

Closure fasteners

Bolts

Multiple

292 39, 292DIG44, E05B 6314

Patent

active

050962370

ABSTRACT:
A latch has a housing, a main bolt displaceable in the housing between a fully extended position projecting fully from the housing and a retracted position generally withdrawn into the housing, and a spring engaged between the main bolt and the housing for urging the main bolt with a predetermined spring force into the fully extended position. At least one secondary bolt is similarly displaceable relative to the housing between an extended and a retracted position. A lockout mechanism in the housing connected between the main bolt and the secondary bolt prevents the secondary bolt from being displaced from its withdrawn into its extended position except when the main bolt is in its fully extended position. The bolt is engageable in a keeper provided with a spring-loaded flap that inhibits the bolt from extending thereinto into its fully extended position and that normally retains it in an intermediate position.

REFERENCES:
patent: 2010461 (1935-08-01), Milligan
patent: 2192398 (1940-03-01), Devereaux
patent: 3791180 (1974-02-01), Doyle
patent: 4183563 (1980-01-01), Stevens

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