Patent · US Expired

Radial piston pump having sealing disc

US4681514A · kind A · utility

6Cited by

5References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Klaus Griese · Kupferzell, DE
Siegfried Mayer · Leinfelden, DE
Dieter Weigle · Urach, DE

Key dates

Filing date	Feb 18, 1986
Grant date	Jul 21, 1987
Priority date	—
Expiry date	Feb 18, 2006

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B1/08
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A pump comprising a housing and two end covers receiving a drive shaft with an eccentric thereon and with a plurality of radial pistons displaceable in radial bores provided in the housing and biased by springs. An inlet passage and an outlet passage are provided in each bore receiving the radial piston. A sealing disc is inserted between the housing and one of the end covers. Sealed through openings for high pressure medium are provided in the sealing disc. The maximal feeding flow of the pressure medium is limited by throttled passages provided in the sealing disc. A pressure control valve is provided, which is connected to an inner chamber of the housing, accommodating the eccentric.

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