Elevator car-mounted govenor system

Details Elevator car-mounted govenor system Elevator car-mounted govenor system

1991-02-14

1991-10-01

Olszewski, Robert P.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 38, 187 81, 187 90, B66B 516

Patent

active

050525239

ABSTRACT:
An elevator car speed governor is mounted on the top of the car assembly, and measures car speed by contacting a fixed element in the hoistway. The fixed element can be a taut cable extending from the top of the hoistway to the pit, or one of the car guide rails, for example. The governor has a centrifugally operated connection with emergency brakes on the car. When overspeed is detected, the connection is actuated to cause the brakes to engage the guide rails and stop the car. The governor can operate at relatively low overspeed rates, and can be used on elevator systems which do not have an overhead machine room, such as hydraulic and linear induction motor elevators.

REFERENCES:
patent: 259951 (1882-06-01), Voerde
patent: 403668 (1889-05-01), Heermans
patent: 3934682 (1976-01-01), Hedstrom
patent: 4029177 (1977-06-01), Fiss
patent: 4538706 (1985-09-01), Koppensteiner
patent: 4662481 (1987-05-01), Morris et al.

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