Multiple lock assembly

Details Multiple lock assembly Multiple lock assembly

1996-11-12

1997-12-16

Dino, Suzanne

Locks

Special application

For closures

70120, 292 36, E05B 6314

Patent

active

056972342

ABSTRACT:
A lock assembly for locking and unlocking a door comprising a lock bar moveable between a locked and unlocked position, three locks, each of which have lock arms moveable between a locked and an unlocked position, and a linkage connecting the lock arms to the lock bar. The linkage has a first operating configuration whereby the lock bar moves from its locked to its unlocked position in response to the movement of any pair of lock arms from their locked to their unlocked position. The linkage also has a second operating configuration whereby the lock bar moves from its locked to its unlocked position in response to either movement by a predetermined pair of lock arms from their locked to unlocked position or the movement of the third lock arm from its locked to unlocked position.

REFERENCES:
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patent: 5067755 (1991-11-01), James
patent: 5341752 (1994-08-01), Hambleton
patent: 5603234 (1997-02-01), Lozier et al.

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