Apparatus for detecting and signaling the function and status of

Details Apparatus for detecting and signaling the function and status of Apparatus for detecting and signaling the function and status of

1991-10-02

1993-10-26

Oberleitner, Robert J.

Brakes

With condition indicator

Electrical

188 729, 188170, 187 73, 200 614, 192 30W, 192 90, 340454, F16D 6600, B66B 516

Patent

active

052557600

ABSTRACT:
An apparatus for detecting and signaling the function and the status of an electronically actuated two-circuit safety disk brake for elevators includes an axially moveable spring centering bolt and a sliding block attached to each of a pair of brake shoes for actuating position sensors. A force imbalance due to breakage of a brake pressure spring displaces the spring centering bolt from its neutral position and actuates a microswitch of a first position sensor by way of sliding block attached to the bolt to generate a signal to a monitoring circuit. A double switching arm formed on the sliding blocks attached to the brake shoes signals not only the normal closure and opening movements of the brake, but causes, on exceeding an admissible wear of the brake lining for the first time, an alarm switching cycle of a microswitch of a second position sensor.

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patent: 5103940 (1992-04-01), Meneut et al.

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