Apparatus for the controlled release of an elevator hoist brake

Details Apparatus for the controlled release of an elevator hoist brake Apparatus for the controlled release of an elevator hoist brake

1991-10-16

1993-07-20

Meislin, D. S.

Tools

Spreader

81486, B25B 3300

Patent

active

052283640

ABSTRACT:
Apparatus (20) is provided to enable a single operator to effect a controlled release of an elevator hoist brake (32) thus allowing "drifting" of the elevator car to the nearest floor and quick safe rescue of trapped passengers during an electrical outage. Other apparatus (120, 130) is provided which may be combined with elements of the apparatus 20 to release brakes on special types of elevators. An additional arrangement (20') of the apparatus 20 is provided to release brakes on still other special types of elevators. An observer having the elevator car in view may communicate (e.g. by hand held transceiver) desired car movements to the operator who is typically located in the machine room atop the elevator shaft.

REFERENCES:
patent: 48431 (1865-06-01), Peace
patent: 2551880 (1951-05-01), Gressley
patent: 3249351 (1966-05-01), Smith
patent: 4516423 (1985-05-01), Reich

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