Radial piston pump

US5716198A · kind A · utility

Assignee

• LuK Automobiltechnik GmbH & Co. KG · DE

Inventors

• Ulrich Hiltemann · Wermelskirchen, DE
• Dieter Otto · Achern, DE

Key dates

• Filing date: May 13, 1996
• Grant date: Feb 10, 1998
• Expiry date: May 13, 2016

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B23/023
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A radial piston pump having a shaft which is mounted in a pump housing an eccentric in the shaft and a stationary piston ring surrounding the eccentric. The piston ring receives the pistons arranged in radial direction to the shaft and surrounding the eccentric. The piston ring is provided with bore holes that open toward the eccentric, for receiving the pistons. The bore holes are closed off at their ends facing away from the eccentric by respective closure plugs. The piston ring is surrounded by a portion of the pump housing, e.g., an annular wall part, so that a liquid filled chamber is defined at least between the closure plugs and the inner side of the portion of the pump housing.