Device for the triggering of safety equipments of a lift plant

Details Device for the triggering of safety equipments of a lift plant Device for the triggering of safety equipments of a lift plant

1992-11-18

1994-06-28

Noland, Kenneth W.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

188189, B66B 516

Patent

active

053238770

ABSTRACT:
An apparatus is mounted on an elevator car for actuating a safety catch or a car brake when an excess car speed is detected in either a downward or an upward direction of travel, or when an unchecked movement of the elevator car takes place. The actuation takes place by movement of a pull rod cage connected to upper or lower pull rods, wherein the pull rod cage transmits a mechanical relative movement which is performed by a mechanical or an electromagnetic car speed monitoring device. Upper and lower sliding connections, which transmit tension forces and actuate the safety catch and the car brake respectively according to whether the car is moving downward or upwardly respectively, serve as connections between the pull rod cage and the upper and lower pull rods respectively.

REFERENCES:
patent: 3441107 (1969-04-01), Thorne et al.
patent: 5052523 (1991-10-01), Ericson
patent: 5096020 (1992-03-01), Korhonen

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