Supervisory operation control system for protecting elevators or

Details Supervisory operation control system for protecting elevators or Supervisory operation control system for protecting elevators or

1985-03-11

1987-03-17

Birmiel, Howard A.

Measuring and testing

Vibration

Sensing apparatus

187107, 376217, B66B 1324

Patent

active

046497510

ABSTRACT:
A supervisory operation control system responds to detection of vibration occurring at a predetermined location of an equipment for causing the equipment susceptible to adverse influence of the vibration to perform a predetermined supervisory operation. Transition to the supervisory operation is enabled when a product of speed and displacement of the vibration exceeds a predetermined value.

REFERENCES:
patent: 3783978 (1974-01-01), Hamilton
patent: 4069897 (1978-01-01), Tomate et al.
patent: 4106594 (1978-08-01), Kirsch et al.
patent: 4238005 (1980-12-01), Watanabe et al.
patent: 4382489 (1983-05-01), Suzuki et al.
"An Earthquake-Emergency Landing Device with a Primary-Wave Sensor for Elevators," Suzuki et al, Mitsubishi Electric Advance, vol. 15, Mar. 1981, pp. 10-11.

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