Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1989-08-02
1991-05-28
Pellinen, A. D.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
187124, B66B 300
Patent
active
050186043
ABSTRACT:
An apparatus for transmitting signals for group supervision of elevators having a group supervising device which receives hall calling signals for and assigns the hall callings to different cages, a plurality of controllers in a machine room connected by signal lines to the group supervising device, signal transmitter/receivers provided in the controllers, and connected in series through signal lines for transmitting and receiving signals through the signal lines, call buttons connected to signal transmitters/receivers on respective floors for generating the hall calling signals, and calling signal transmitters provided in the controllers for transmitting the hall calling signal to the supervising device.
REFERENCES:
patent: 4765442 (1988-08-01), Blain et al.
patent: 4872532 (1989-10-01), Tobita et al.
Eckholdt Charles E.
Mitsubishi Denki & Kabushiki Kaisha
Pellinen A. D.
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