Elevator – industrial lift truck – or stationary lift for vehicle – Having specific guide shoe – With roller
Patent
1994-03-09
1995-08-08
Noland, Kenneth
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific guide shoe
With roller
187278, B66B 702
Patent
active
054390753
ABSTRACT:
An elevator car vertically guided along a hoistway rail has horizontal motions controlled by means of an actuator wherein horizontal acceleration of the elevator car and relative horizontal displacement between the car and the rail is sensed for controlling such horizontal motions by means of the actuator. Guiding means can be provided in the form of roller clusters at the corners of the car for engaging hoistway rails on opposite sides of the car wherein, for each roller cluster, plural actuators are included with accompanying springs wherein the roller cluster actuators are responsive to the controller for actuating the elevator car horizontally with respect to the hoistway rail. The roller cluster actuators can be electromagnets. Each wheel of the roller cluster can have stop means assocaiated therewith that is operable to limit the extent of movement of the guide wheel in a direction away from the guide rail.
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Hollowell Richard L.
Salmon John K.
Skalski Clement A.
Traktovenko Boris G.
Maguire Francis J.
Noland Kenneth
Otis Elevator Company
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