Escalator service speed control

Details Escalator service speed control Escalator service speed control

B - Operations, Transporting

66

B

318/111, 342/31

B66B 25/00 (2006.01) H02P 7/44 (1990.01)

Patent

CA 1313244

Escalator Service Speed Control Abstract Reduced running speeds are provided for servicing an escalator by interposing a service unit which is essentially a variable-frequency, variable- voltage converter, between the AC source and the escalator drive motor. OT-541

508803

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