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US 2002/0175812 A1Published application
Inductive safety sensor for monitoring doors and gates
AssigneeBernstein AG
InventorsAndreas Hofmann, Matthias Kruhler
Life of this patent
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Abstract
Inductive safety sensor for monitoring the condition of doors and gates, particularly of elevators, having a sensor device for sensing a target which is designed such that it emits a signal only when sensing a target made of a defined material and switches from a first constant current to another constant current when the target is sensed.
Claims17
An inductive safety sensor for monitoring the condition of doors and gates, particularly of elevators, the safety sensor comprising:
- a sensor device for sensing a target, the sensor emitting a signal only when sensing a target made of a defined material and switches from a first constant current to another constant current when the target is sensed.
Dependencies are inferred from the claim text.