Elevator control apparatus

Details Elevator control apparatus Elevator control apparatus

1986-01-17

1987-03-31

Shoop, Jr., William M.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 502

Patent

active

046536116

ABSTRACT:
A period of time required since the output signal of an acceleration detector for detecting an earthquake exceeds a first set level, until it reaches a second set level greater in value than the first set level, is measured, and a calculation is executed on the basis of the measured value thereby to predict the scale of the earthquake, and a resetting period of time since an elevator is brought to a stoppage operation due to the earthquake, until the stoppage operation is released, is calculated on the basis of the predicted scale of the earthquake. Thus, the period of time till the reset is automatically set is variable according to the scale of the earthquake.

REFERENCES:
patent: 3792759 (1974-02-01), Kirsch
patent: 4056169 (1977-11-01), Showalter
patent: 4382489 (1983-05-01), Suzuki et al.

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