Otis Elevator Company

Gary Copsey

Jacek F Gieras

Pei-Yuan Peng

Bryan Robert Siewert

Muhidin A Lelic

An electromagnetic door lock assembly () includes a first portion () supported relative to hoistway doors () and a second portion () supported for movement with an elevator car (). The first and second portions cooperate so that electromagnetic interaction between them unlocks a set of hoistway doors () for access to the car (), for example. In disclosed embodiments, a first portion () of the actuator has at least one stationary electromagnetic portion (A,B) and at least one moveable portion (). The second portion () that moves with the car () includes at least one stationary electromagnetic portion (). Magnetic interaction between the first and second portions () causes selected movement of the moveable portion () for selectively locking or unlocking the doors ().

Electromagnetically operated elevator door lock

A detector of foreign objects, and particularly fingers, between the doors and the contiguous walls of landing and car openings in an elevator with glass car and landing doors includes a light beam emitter and a receiver. The emitter, which is located near an opening frame edge of the car, emits a light beam that extends transversally across the car and landing glass doors from the vertical car opening frame edge to the opposite vertical landing frame edge. The receiver, which receives the emitted light beam, is adapted to detect any obstacle to the light beam and to order the simultaneous halt and reversal, as required, of the car and landing doors.

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Gien, France

Gary Copsey