Method of contactlessly monitoring elevator shaft doors

Details Method of contactlessly monitoring elevator shaft doors Method of contactlessly monitoring elevator shaft doors

2005-09-20

2005-09-20

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

With barrier for regulating access to load support

Includes motor or motor driven linkage for shifting barrier

C187S300000, C187S301000, C187S303000

Reexamination Certificate

active

06945363

ABSTRACT:
A method for monitoring shaft doors of a elevator installation uses at least one contactlessly acting shaft door monitoring sensor to emit a beam of electromagnetic waves, wherein at least during specific detection phases the beam extends over several floors and is detected by a receiver. The beam is influenced by a shaft door panel not being completely closed and/or a shaft door lock not being disposed in the locking setting such that a disturbance signal is generated to the elevator control.

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