Radial piston pump

US5295797A · kind A · utility

Assignee

• Alfred Teves GmbH · DE

Inventors

• Manfred Kahrs · Wiesbaden, DE
• Gerhard Kunz · Heiligenhaus, DE
• Franz Fleck · Frankfurt am Main, DE
• Hermann Schoellhorn · Frankfurt am Main, DE
• Gerhard Schudt · Hanau, DE
• Winfried Huthmacher · Frankfurt am Main, DE

Key dates

• Filing date: Jul 6, 1992
• Grant date: Mar 22, 1994
• Expiry date: Jul 6, 2012

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B1/0456
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A suction-restricted radial piston pump is described, in particular for use with automotive vehicles. The pump delivers a flow constant over a broad speed range and involving low losses in output and generating only negligible noise. In one embodiment, a control slot (13), on the pressure side, is subdivided into several grooves (27,28) which at least in part are in communication, through check valves (32), with the pressure connection (20). An alternative embodiment provides a shape of the pressure-sided control slot in which the introducing end thereof is comparatively narrow to reduce noise at a high speed and the outlet-sided end thereof with a wider width sufficient to meet the required output. According to a third embodiment, the suction-sided slot (12) is provided with a narrow width section and a subsequent wider width section.