Electric switch contained within lock frame and actuated by move

Details Electric switch contained within lock frame and actuated by move Electric switch contained within lock frame and actuated by move

1974-06-10

1976-02-17

Scott, James R.

Electricity: circuit makers and breakers

Special application

Actuated concurrently with operation or use of art device

70DIG3, 200 6167, H01H 2700

Patent

active

039393151

ABSTRACT:
A door lock condition indicator includes a lock frame adapted to be mounted on a door panel. Outer and inner spindles carrying knobs and rotatable about an axis are mounted on the lock frame to actuate a lock mechanism. A locking bar is disposed partly in the lock frame and partly in the inner spindle and is movable parallel to the axis between one position in engagement with the lock frame and free of the outer spindle and another position in engagement with the lock frame and engaging the outer spindle to prevent the lock mechanism from being actuated thereby. There is an electric switch included in an indicator circuit and disposed on the lock frame in a position to be engaged by the locking bar and actuated to close the circuit when the locking bar is in a selected one of the positions.

REFERENCES:
patent: 867220 (1907-09-01), Themke
patent: 921168 (1909-05-01), Schlage
patent: 1112316 (1914-09-01), Percival
patent: 1579457 (1926-04-01), Schlage
patent: 1708138 (1929-04-01), Hildahl
patent: 2266086 (1941-12-01), Schlage
patent: 2917337 (1959-12-01), Schlage
patent: 3056125 (1962-09-01), Harry
patent: 3259707 (1966-07-01), Eickhoff
patent: 3353383 (1967-11-01), Fish
patent: 3643249 (1972-02-01), Haywood
patent: 3735613 (1973-05-01), Diebel et al.

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