Radial piston pump

Details Radial piston pump Radial piston pump

1989-03-22

1991-04-02

Michalsky, Gerald A.

Pumps

Three or more cylinders arranged in parallel, radial, or...

Radial cylinders

F04B 110

Patent

active

050044060

ABSTRACT:
A radial piston pump has a rotor provided within a cylinder chamber in such a manner that a center axis of the rotor is offset from a center axis of the cylinder chamber. The rotor has three working chambers a piston is slidably provided each of which. Each working chamber may connect with a suction groove or a discharge groove so that there exists a couple of situations, one of which is that two working chambers connect with the discharge chamber simultaneously and another one of which is that single working chamber connects with the discharge chamber. In order to make the forcing point at which total biassing force of the piston is focussed move gradually, the radial piston pump has a delay angle at a front side of the suction chamber. Namely a pressure within the working chamber is preliminary reduced before the working chamber connects to the suction groove so that the forcing point should shift gradually.

REFERENCES:
patent: 3874271 (1975-05-01), Eickmann
patent: 4555223 (1985-11-01), Budecker et al.
patent: 4652215 (1987-03-01), Kuroyanagi et al.
patent: 4927338 (1990-05-01), Ito et al.

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