Door latch operating device

Details Door latch operating device Door latch operating device

1983-10-27

1986-08-19

Moore, Richard E.

Closure fasteners

Operators with knobs or handles

292DIG38, 292 1, E05C 1300

Patent

active

046065679

ABSTRACT:
Herein disclosed is a door latch operating device which comprises a stationary member fixed to the door, a first movable member movable from a first position to cause the door to be locked to a second position to cause the door to be unlocked, a second movable member hingedly connected to the stationary member, and a third movable member having one end hingedly connected to the leading end of the second movable member and the other end pivotally connected to the first movable member. With this arrangement, the movement of the second movable member induces the movement of the first movable member, and vice versa.

REFERENCES:
patent: 202186 (1878-04-01), Montgomery
patent: 1605989 (1926-11-01), Rucker
patent: 2534693 (1950-12-01), Adams
patent: 3918754 (1975-11-01), Isbister
patent: 4083589 (1978-04-01), Palmerino
patent: 4099757 (1978-07-01), Palmer et al.

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