Master door operator for vertically movable elevator gates and l

Details Master door operator for vertically movable elevator gates and l Master door operator for vertically movable elevator gates and l

1975-06-23

1977-04-05

Blunk, Evon C.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

49118, 187 59, B66B 1312

Patent

active

040156885

ABSTRACT:
A drive motor on an elevator car is connected by a pivotally driven arm to a clutch mechanism on the front of a vertically movable gate which upon operation of the drive motor engages a clutch mechanism on one of the landing doors to lift the gate and landing door in synchronism.

REFERENCES:
patent: 2307353 (1943-01-01), Bond
patent: 2432293 (1947-12-01), De Giovanni
patent: 2497080 (1950-02-01), Guilbert et al.
patent: 2633932 (1953-04-01), Clift
patent: 3051269 (1962-08-01), Guilbert et al.
patent: 3065826 (1962-11-01), Tucker
patent: 3605952 (1971-09-01), Lusti
patent: 3783977 (1974-01-01), Voser
patent: 3921763 (1975-11-01), Westerlund

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