Elevator – industrial lift truck – or stationary lift for vehicle – With barrier for regulating access to load support
Patent
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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King William L.
Kowalczyk Thomas M.
Kulak Richard E.
Reddy K. Narasimha
Rivera James A.
Moore Gregory A.
Otis Elevator Company
Young Karen M.
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