Control system for a plurality of elevators

Details Control system for a plurality of elevators Control system for a plurality of elevators

1978-04-20

1980-04-01

Truhe, J. V.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

340 19R, B66B 300

Patent

active

041957121

ABSTRACT:
A control system for use in conjunction with several elevators which are located close to one another and are controlled independently. The elevators are provided with a call button for each elevator door on each floor. After actuating one call button, all other call buttons on that same floor are blocked from being operative for a predetermined time interval. Each call button is constructed as a parallel contact and is connected, on the one hand, by a time relay and, on the other hand, directly to an auxiliary relay wired as an interrupter. From there, the call button is connected by a call line to associated elevator controls. The call buttons may be constructed as conventional push button switches, and a control unit in the form of a common interrupter may be installed in the call line together with a time lag relay, an auxiliary relay and an OR-circuit. The arrangement may be such that after actuating one "up" button all other "up" buttons are blocked for a predetermined time interval. Similarly, after actuating one "down" button, all other "down" buttons on the same floor are blocked for the predetermined time interval.

REFERENCES:
patent: 2066908 (1937-01-01), Bouton et al.
patent: 2100736 (1937-11-01), Eames
patent: 2240044 (1941-04-01), Kramer
patent: 2742979 (1956-04-01), Santini et al.
patent: 2826751 (1958-03-01), Thurston et al.

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