Pump with side surface coating

US8066497B2 · kind B2 · utility

Assignee

• Luk Fahrzeug-Hydraulik GmbH & Co. KG · DE

Inventors

• Waldemar Hebisch · Pocking, DE
• Markus Meitinger · Eppstein, DE
• Karl Prinzhorn · Mellrichstadt, DE
• Dirk Webert · Bad Homburg vor der Höhe, DE

Key dates

• Filing date: Dec 12, 2005
• Grant date: Nov 29, 2011
• Expiry date: Jan 12, 2027

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04C2230/91
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a preferred embodiment of the present invention, a positive-displacement pump, in particular a vane cell pump, having a pump element, in particular a rotor, which is situated within a contour ring and rotatable between two side surfaces where a limited coating is located on at least one of the side surfaces.