Mortise lock for ordinary door and panic door

Details Mortise lock for ordinary door and panic door Mortise lock for ordinary door and panic door

2008-06-24

2010-11-23

Cuomo, Peter M (Department: 3673)

Locks

Special application

For closures

C070S107000, C070S218000, C070S224000, C292S169140, C292S336500

Reexamination Certificate

active

07836738

ABSTRACT:
A mortise lock includes a case having first and second sidewalls. A follower plate is pivotably mounted in the case and actuatable by a key-operable cylinder to move a latch bolt from an extended position to a retracted position. A locking plate is moveable by the cylinder through transmission by a lever link between an unlocking position allowing movement of the latch bolt and a locking position not allowing movement of the latch bolt. The locking plate is active when a connecting member is slideably extended through a slot in the first sidewall and through an engaging hole of the lever link into another engaging hole in the follower. The locking plat is inactive when the connecting member is slideably extended through another slot in the second sidewall and engaged in the engaging hole of the follower and not engaged in the engaging hole of the lever link.

REFERENCES:
patent: 3672714 (1972-06-01), Schultz
patent: 6050115 (2000-04-01), Schroter et al.
patent: 6302456 (2001-10-01), Errani
patent: 6581423 (2003-06-01), Lin
patent: 6619705 (2003-09-01), Dalsing
patent: 6851287 (2005-02-01), Yang et al.
patent: 6993946 (2006-02-01), Shen
patent: 7303215 (2007-12-01), Moon et al.
patent: 7377140 (2008-05-01), Shen et al.
patent: 7497486 (2009-03-01), Davis et al.
patent: 7603880 (2009-10-01), Chen

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