Pressure hydraulic pump having first and second synchronously dr

Details Pressure hydraulic pump having first and second synchronously dr Pressure hydraulic pump having first and second synchronously dr

1996-12-09

2000-05-30

Freay, Charles G.

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

417212, 417251, 417321, 417536, F04B 4906, F04B 3910

Patent

active

060684488

ABSTRACT:
A high pressure hydraulic pump apparatus constituting a two-stage pressurizing hydraulic booster combining a pair of plunger pumps. The first and second pumps are driven into a push-pull synchronous operation at the equal stroke with each other. The per-stroke displacement of the first pump is greater than that of the second pump. The first pump draws by self-suction the liquid from a reservoir while the second pump is on the pressurizing and delivery stroke. When the first pump is on the delivery stroke, the liquid pressurized to a certain intermediate pressure by the first pump is sucked into the second pump. During the next reverse stroke the second pump further pressurizes and discharges the liquid while the first pump effects the suction stroke. At the final pressurization by the second pump, the driving stroke length of the pump is controlled to a limited value which provides a minimum delivery flow required for the interior of a load vessel to attain a target pressure in accordance with the compressibility of the liquid and the detection of a load pressure.

REFERENCES:
patent: 2592836 (1952-04-01), Weber
patent: 3010641 (1961-11-01), Peregrine
patent: 4883409 (1989-11-01), Strohmeier
patent: 5526962 (1996-06-01), Huggenberger
patent: 5767883 (1998-06-01), Castro et al.
patent: 5865602 (1999-02-01), Nozari
Grainger Catalog # 380 p. 1795, Dec. 1991.

Affiliated with

Also associated with

Rating

Pressure hydraulic pump having first and second synchronously dr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pressure hydraulic pump having first and second synchronously dr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure hydraulic pump having first and second synchronously dr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1906140