Procedure and apparatus for triggering the safety gear of an ele

Details Procedure and apparatus for triggering the safety gear of an ele Procedure and apparatus for triggering the safety gear of an ele

1994-05-25

1996-02-20

Noland, Kenneth

Elevator, industrial lift truck, or stationary lift for vehicle

Having means engaging cable attached to load support, or its...

188189, B66B 500

Patent

active

054922003

ABSTRACT:
A procedure and an apparatus triggers the safety gear of an elevator at a speed lower than the gripping speed. The overspeed governor of the elevator comprises a pulley (3) driven by the safety gear rope and a brake (5) connected to it by knuckle pins (14,14'). The brake is provided with centrifugal weights (16,16'). Eccentric cams (15,15') and a brake disc (6) are also provided for the overspeed governor. At a speed lower than the gripping speed, using a separately controlled solenoid (30) attached to the overspeed governor, the brake (5) is caused to engage the pulley (3) by driving the plunger of the solenoid into the path of rubber rollers (31,32) rotating with the centrifugal weights.

REFERENCES:
patent: 3327811 (1967-06-01), Mastroberte
patent: 4653612 (1987-03-01), Winkler
patent: 5183978 (1993-02-01), Sheridan et al.

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