Panic proof passage lock set

Details Panic proof passage lock set Panic proof passage lock set

1988-06-06

1989-09-19

Smith, Gary L.

Locks

Special application

For closures

70DIG42, 29216917, E05B 5504

Patent

active

048669652

ABSTRACT:
Disclosed is a lock set for installation in a bored hole in a door having an inside thumb turn locking mechanism. A unique combination camming device, operated by both the thumb turn and independently by the internal spindle through the internal handle, permits inside privacy with a panic proof feature while simultaneously allowing emergency entrance through secondary outside function with an independent means such as a coin or screwdriver.

REFERENCES:
patent: 2188149 (1940-01-01), Kaiser
patent: 2207801 (1940-07-01), Harp
patent: 2400403 (1946-05-01), Falk
patent: 2544959 (1951-03-01), Hillgren
patent: 2723874 (1955-11-01), Hillgren
patent: 4453753 (1984-06-01), Fayerman et al.

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