04139810 is referenced by 7 patents and cites 5 patents.

The present invention is a device for stopping a passenger conveyor.

A stop pushbutton is depressed to deenergize a driving motor for an escalator and an operating winding for an electromagnetic brake. The electromagnetic brake has a mechanical braking means whose operations is opposed by the magnetic force of the operating winding. Then two timing relays are energized and also the brake operating winding is reenergized through a variable resistor to brake the motor with a low braking force. The timing relays are successively picked up after predetermined time intervals to increase the resistance of the resistor to increase the braking force stepwise by decreasing the current and hence the magnetic force of the operating winding. When the escalator reaches a predetermined low speed, the brake operating winding is again deenergized to apply the rated braking force to the motor until the escalator is stopped.

Title
Device for stopping passenger conveyor
Application Number
5/780349
Publication Number
4139810
Application Date
March 23, 1977
Publication Date
February 13, 1979
Inventor
Masaaki Nakayama
Inazawa
JP
Yasuo Ueki
Inazawa
JP
Agent
Wenderoth Lind & Ponack
Assignee
Mitsubishi Denki Kabushiki Kaisha
JP
IPC
H01H 47/04
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