Drive unit for an elevator

Details Drive unit for an elevator Drive unit for an elevator

2004-03-16

2008-09-09

Donovan, Lincoln (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

C187S256000, C187S258000, C187S391000, C318S105000, C318S495000

Reexamination Certificate

active

07422089

ABSTRACT:
An elevator drive unit including a traction sheave supported by a shaft rotatably supported by a pair of bearings. Mounted on opposite free ends of the shaft are rotors of a pair of electric motors. Cage-housings on a pair of spaced bearing end-plates retain the stators of the motors. A plurality of frequency converters operating in a master/slave mode to supply electrical power to the motors.

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