Patent · US Expired

Radial piston pump

US4257750A · kind A · utility

1Cited by

5References

4Claims

0Family size

Assignee

G. L. Rexroth GmbH

Inventors

Jorg Dantlgraber · Lohr am Main, DE
Horst Krämer · Ginsheim-Gustavsburg, DE
Horst Fischer · Hilden, DE

Key dates

Filing date	Apr 16, 1979
Grant date	Mar 24, 1981
Priority date	—
Expiry date	Apr 16, 1999

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B1/063
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The radial pump preferably for use in connection with a hydraulic clamping device includes a plurality of pumping elements enclosed in a housing and cooperating with a corresponding pluraity of discharge valves. A multiway control valve controls the delivery of pressure fluid to a load port in such a manner that during the actuation of the load the outlet of all discharge valves are united to deliver the entire flow of pressure fluid into the load port, whereas when the load is maintained under a constant pressure, only one pumping element delivers discharged fluid via a single discharge valve into the load port and the remaining pumping elements deliver their output into the reservoir.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.