Floor controller for an elevator

Details Floor controller for an elevator Floor controller for an elevator

1976-03-03

1977-09-27

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 152

Patent

active

040505472

ABSTRACT:
An elevator system is provided with a floor controller for controlling the speed of a car. One typical form of floor controller is composed of a synchronizer operated on a reduced scale in synchronism with the movement of an elevator car, an advancer which moves in advance of the synchronizer and stops when it detects a call, and a difference detector which moves in accordance with the relative distance between the synchronizer and the advancer for controlling the running speed of the elevator car in accordance with its own position. When a call is generated, the advancer must be driven in advance of the synchronizer in the direction selected by a direction selector separately provided. For this purpose, an electric motor for driving the advancer is provided, but it need not drive the advancer directly. Since any one of the synchronizer, the advancer or the difference detector moves in accordance with the difference between the distances covered by the travelling of the others, the advancer can be moved indirectly by driving the difference detector. This simplifies both the construction of the elevator system and the control of the advance motor.

REFERENCES:
patent: 3685618 (1972-08-01), Takahashi et al.
patent: 3707206 (1972-12-01), Watanabe et al.
patent: 3814215 (1974-06-01), Takahashi et al.

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