Two stage rotary vane pump

US4508494A · kind A · utility

Assignee

• Arthur Pfeiffer Vakummtechnik Wetzlar GmbH · US

Inventors

• Erich Bachmann · Aßlar, DE
• Ludwig Fabel · Wetzlar, DE
• Roland Fischer · Trostberg, DE
• Werner Peter · Wettstetten, DE
• Bernd Scheiter · Vollnkirchen, DE
• Werner Wenzel · Lübeck, DE

Key dates

• Filing date: Sep 28, 1982
• Grant date: Apr 2, 1985
• Expiry date: Sep 28, 2002

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04C15/0061
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An arrangement for transmitting torque between the two rotors of a two stage rotary vane pump, consists of a coupling element, which forms between engagements on opposing faces of the two rotors, a connection which permits two degrees of freedom between the two rotors in the plane perpendicular to the rotor axis.