Patent ID: 11901121
Assignee: OTIS ELEVATOR COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 10:
11. A method of detecting a condition or state of a first solenoid (2) or a magnet (3) of an electronic safety actuator (1) for an elevator safety brake, the magnet (3) being movable by the first solenoid (2) between a first position proximate to the first solenoid (2) and a second position distal from the first solenoid (2), comprising:
applying an electrical signal to the first solenoid (2) or a second solenoid (6);
detecting an electrical signal induced in the other of the first solenoid (2) and the second solenoid (6) as a result of the applied electrical signal; and
determining the condition or state based on the detected electrical signal.