Hydraulic control system for variable displacement pumps

Details Hydraulic control system for variable displacement pumps Hydraulic control system for variable displacement pumps

1979-09-24

1981-02-03

Croyle, Carlton R.

Pumps

Condition responsive control of drive transmission or pump...

Plural pumps with individual or relative control

60447, 60486, F04B 4900

Patent

active

042485746

ABSTRACT:
A hydraulic control system for variable displacement pumps, comprising at least two variable displacement pumps, a prime mover for driving the variable displacement pumps, a fixed displacement pilot pump driven by the common prime mover, a pressure compensating valve comprising a two-stage proportional pressure reducing valve and a negative proportional pressure reducing valve, the pressure compensating valve being connected to the variable displacement pumps and the fixed displacement pilot pump, and at least two servo boosters each being mechanically connected to the respective variable displacement pumps for controlling the displacement therefrom, the servo boosters being connected to the fixed displacement pilot pump and the pressure compensating valve and controlled thereby.

REFERENCES:
patent: 3732036 (1973-05-01), Busbey et al.
patent: 3738779 (1973-06-01), Hein et al.
patent: 3841795 (1974-10-01), Ferre et al.
patent: 3935706 (1976-02-01), Stevens
patent: 4065228 (1977-12-01), McMillan
patent: 4203712 (1980-05-01), Uehara

Affiliated with

Also associated with

Rating

Hydraulic control system for variable displacement pumps does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic control system for variable displacement pumps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic control system for variable displacement pumps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-548699