Elevator

Details Elevator Elevator

1992-10-26

1994-03-01

Olszewski, Robert P.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 1R, B66B 704

Patent

active

052899020

ABSTRACT:
An elevator having a cage disposed inside guide rails, a damper unit, a vibration sensor, and a control circuit. The damper unit is controlled by the control circuit in response to vibrations of the cage which are detected by the vibration sensor. The vibration sensor detects the vibration of the cage, converts the vibration into an electric signal, and transmits the electric signal to the control circuit. The control circuit compares the electric signal with a predetermined value and controls the coefficient of viscous damping of the damper unit according to the result of the comparison. Accordingly, vibrations of the cage are absorbed and reduced, and the elevator provides a more comfortable ride.

REFERENCES:
patent: 1854976 (1932-04-01), Brady
patent: 2253820 (1941-08-01), Spiro
patent: 2260922 (1941-10-01), Spiro
patent: 2265086 (1941-12-01), Spiro
patent: 3087583 (1963-04-01), Bruns
patent: 3099334 (1963-07-01), Tucker
patent: 3669222 (1972-06-01), Takamura et al.
patent: 4754849 (1988-07-01), Ando
patent: 5086882 (1992-02-01), Sugahara et al.

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