Speed dictation apparatus

Details Speed dictation apparatus Speed dictation apparatus

1971-04-07

1978-12-26

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 128

Patent

active

041311833

ABSTRACT:
Improved speed dictation apparatus for controlling the speed of an elevator car in which the deceleration of the elevator car is brought into conformity with that which would be provided by a distance controlled signal notwithstanding the continued application of a time controlled signal and the deceleration is made consistent regardless of the length of trip by controlling the speed of the car in accordance with the distance controlled signal before the car starts to decelerate and by controlling the conformity process with a dischargingcapacitive circuit which at the time the conformity process begins is charged to a voltage signifying the difference between the actual speed being dictated to the car and the speed the distance controlled signal is then dictating.

REFERENCES:
patent: 3523232 (1970-08-01), Hall et al.
patent: 3599755 (1971-08-01), Lund et al.
patent: 3670851 (1972-06-01), Shima

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