Control apparatus

Details Control apparatus Control apparatus

1975-11-17

1978-03-28

Schaefer, Robert K.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 130

Patent

active

040810585

ABSTRACT:
Control apparatus for regulation of the deceleration of an elevator has a comparator for two currents which are functions of the actual decrease of the velocity and the other of the desired decrease provided by a source and including means controlled by the differential current from the comparator to determine the variation of the speed of the elevator. The source is served by means causing decrease of the current that they elaborate as a function of the available distance and not of time. The invention is applicable to elevators, invalid carriers, freight carriers and similar apparatus.

REFERENCES:
patent: 3773146 (1973-11-01), Dixon, Jr. et al.
patent: 3777855 (1973-12-01), Boyldew et al.
patent: 3815711 (1974-06-01), Hoelscher
patent: 3893695 (1975-07-01), Rickert

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