Open-loop hydraulic supply system

Details Open-loop hydraulic supply system Open-loop hydraulic supply system

1992-09-10

1994-06-14

Bertsch, Richard A.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

4172221, 60431, 60449, F04B 126

Patent

active

053204999

ABSTRACT:
A system comprising a secondary mover such as an hydraulic pump driven by a prime mover such as a motor powered, in use, by an alternating current (AC) electrical supply, whereby the operation of the secondary mover is affected by any frequency variation in a substantially constant voltage AC supply. The system further comprises adjustment means in use powered by the same AC supply as the prime mover, having inherently substantially the same operating characteristics as the prime mover, being coupled to the secondary mover and operable to adjust the operating range thereof in accordance with variations in the frequency of the AC supply.

REFERENCES:
patent: 4158290 (1979-06-01), Cornell
patent: 4559778 (1985-12-01), Krushe
patent: 5064351 (1991-11-01), Hamey et al.

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