Safety door lock

Details Safety door lock Safety door lock

1998-02-12

1999-04-06

Meyers, Steven

Locks

Special application

For closures

70149, 70218, 70422, 292167, 292139, 2923363, 292DIG27, C05B 5504

Patent

active

058903852

ABSTRACT:
A safety door lock comprises follower member turned with an inside door knob or an outside door knob to move a latch bolt between the locking position and the unlocking position, and a clutch controlled by a push block between a first position where the outside door knob is coupled to the follower member and a second position where the outside door knob is disconnected from the follower member.

REFERENCES:
patent: 563867 (1896-07-01), Moser
patent: 3375687 (1968-04-01), Foster
patent: 3750433 (1973-08-01), Sanders
patent: 3808849 (1974-05-01), Alexander
patent: 4589691 (1986-05-01), Foshee et al.

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