Elevator rotary door interlock

Details Elevator rotary door interlock Elevator rotary door interlock

1992-02-24

1993-05-04

Olszewski, Robert P.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 62, 187 65, B66B 100

Patent

active

052072983

ABSTRACT:
An elevator door interlock has a camming surface which is in contact with a lead of an electrical circuit and has a bridge thereon. The camming surface rotates the bridge into contact with the lead if a hoistway door is locked and out of contact with the lead if the hoistway door is not locked.

REFERENCES:
patent: 978269 (1910-12-01), Collier
patent: 1453551 (1923-05-01), Fogal
patent: 2060283 (1936-11-01), Cullmer
patent: 2378218 (1945-06-01), Hard
patent: 3292737 (1966-12-01), Crispen et al.
patent: 4483420 (1984-11-01), Byrne

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