Elevator brake and safety

Details Elevator brake and safety Elevator brake and safety

B - Operations, Transporting

66

B

188/4

B66B 5/16 (2006.01) B60T 8/24 (2006.01) B66B 5/18 (2006.01)

Patent

CA 1262875

Abstract Two hydraulically controlled brakes (32) are attached to an elevator car (10) and each engages a guide rail (18). Each brake (32) is applied by a spring (40). The spring is compressed to release the brake, by actuating hydraulic cylinders (31a) through an electromechanically operated master cylinder (31) that responds to a signal from the motor control (16). An electromechanical release valve (52) is operated by a governor (22), when an overspeed condition exists to quickly release the pressure in the cylinders, applying the brake.

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