Push button lock

Details Push button lock Push button lock

1996-01-29

1997-11-25

Boucher, Darnell M.

Locks

Special application

For control and machine elements

292170, 292DIG31, 70145, 70224, E05C 112

Patent

active

056899807

ABSTRACT:
A push button lock for mounting at an opening formed through a door panel near an edge of the door includes a flush mountable exterior housing having a thin mounting flange that encircles central housing portions that are configured to extend into the door panel opening, and a surface mountable interior housing that defines a bolt passage that carries a spring-projected slide bolt having an end formation configured to latchingly engage a suitably configured striker. The interior housing and the mounting flange of the exterior housing overlap and are clamped toward engagement with interior and exterior door panel portions that extend about the opening. The interior and exterior housings define button passages that intersect with the bolt passage, within which interior and exterior push buttons are slidably carried, with inner end regions of the buttons defining inclined cam surfaces that are configured to matingly engage separate interior-facing and exterior-facing inclined cam surfaces formed on the slide bolt so that, when either of the buttons is pressed, the engagement of its cam surface with one of the cam surfaces of the slide bolt will cause the slide bolt to retract from latchingly engaging the striker. A key-operated lock cylinder carried by the exterior housing and a locking knob carried by the interior housing each are operable to move a locking cam into and out of the path of the slide bolt to selectively permit and prevent slide bolt retraction.

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