Elevator governor

Details Elevator governor Elevator governor

1995-10-19

1997-08-05

Noland, Kenneth

Elevator, industrial lift truck, or stationary lift for vehicle

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

188188, B66B 500

Patent

active

056533128

ABSTRACT:
An elevator governor has two balancing springs, i.e., a first balancing spring for continually urging flyweights in a direction against a centrifugal force and a second balancing spring for urging flyweights in a direction against the centrifugal force only when speed of a cage exceeds a previously set first overspeed. Thereby, two overspeeds may be set independently from each other whereby the setting operation may be facilitated and accuracy in setting the overspeeds may be improved.

REFERENCES:
patent: 4742891 (1988-05-01), Kunii et al.
patent: 5299661 (1994-04-01), Pramanik et al.
patent: 5492200 (1996-02-01), Konhonen

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