High performance linear induction motor door operator

Details High performance linear induction motor door operator High performance linear induction motor door operator

1996-11-07

1999-01-26

Young, Karen M.

Elevator, industrial lift truck, or stationary lift for vehicle

With barrier for regulating access to load support

187316, B66B 1308

Patent

active

058628878

ABSTRACT:
An elevator car door system for opening and closing elevator car doors in an elevator car includes a high performance linear induction motor having a pair of movable motor primaries, each attached to a door hanger for each door, and a stationary motor secondary attached to a header bracket which is secured to the elevator car. Each motor primary includes a primary winding and a backiron spaced apart by a plurality of spacers that establish a magnetic gap therebetween. The motor secondary fits between the primary winding and the backiron as the moving motor primaries travel across the motor secondary, generating thrust.

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EPC Search Report for Serial No. 97308731.5-2313 dated Feb. 12, 1998.
U.S. Patent Application Serial No. 8/225,024 filed Apr. 8, 1994 entitled "Linear Induction Motor Door Drive Assembly for Elevators"; Jerome F. Jaminet, et al.

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