Control system for variable displacement pumps

Details Control system for variable displacement pumps Control system for variable displacement pumps

1975-12-22

1977-06-14

Croyle, Carlton R.

Pumps

Condition responsive control of drive transmission or pump...

Plural pumps with individual or relative control

60428, 60449, F15D 3102, F04B 4900, F04B 126

Patent

active

040294390

ABSTRACT:
In a hydraulic system having a plurality of variable displacement pumps driven by a prime mover, each pump has a variable ratio input device connected to a load sensing means. Each variable ratio input device automatically reduces the displacement of its respective pump by the same proportion when the prime mover is overloaded irrespective of the displacement setting of the pump and automatically increases the displacement of its pump by the same proportion up to the set displacement when the prime mover is not overloaded.

REFERENCES:
patent: 3649134 (1972-03-01), Wagenseil
patent: 3695783 (1972-10-01), Soyland et al.
patent: 3732036 (1973-05-01), Busbey et al.
patent: 3841795 (1974-10-01), Ferre et al.
patent: 3891354 (1975-06-01), Bosch
patent: 3908519 (1975-09-01), Born et al.
patent: 3963378 (1976-06-01), McMillan

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