Radial piston pump

US6769351B2 · kind B2 · utility

Assignee

• Ina Schaeffler KG · DE

Inventors

• Johannes Lang · Bad Wildbad, DE
• Stefan Willared · Pautzfeld, DE
• Klaus Scharinger · Gauchsdorf, DE

Key dates

• Filing date: Nov 15, 2002
• Grant date: Aug 3, 2004
• Expiry date: Jan 22, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2360/42
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In an eccentric bearing arrangement for a pump shaft (2) comprising an eccentric ring (4) that is fixedly attached thereto, and further comprising a needle roller bearing that is arranged on an outer peripheral surface of the eccentric ring, a stop washer (12) is retained in a circumferential groove (13) of the needle roller bushing (9) and is surrounded radially by the adjoining flange (11) of the needle roller bushing (9), and the stop washer (12) comprises an axially inward open annular groove (15) in which the cage (6) is guided.