Positive displacement machine with elastic suspension

US4300875A · kind A · utility

Assignee

• Leybold-Heraeus GmbH · DE

Inventors

• Berthold Fischer · Lechenich, DE
• Hans-Peter Kabelitz · Cologne, DE
• Hansen Pfaff · Lechenich, DE
• Andreas Schmitz · Glückstadt, DE

Key dates

• Filing date: Jul 16, 1979
• Grant date: Nov 17, 1981
• Expiry date: Jul 16, 1999

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04C29/0057
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a displacement machine operating according to the spiral principle and having two displacement elements presenting respective axially interengaging sprial-shaped walls, and drive means connected between the elements to produce a relative translatory circular movement therebetween, an elastic suspension is provided to support at least one of the displacement elements for permitting elastic movement between the elements in a plane perpendicular to the axis of translatory circular movement. In such a displacement machine, whether or not the elastic suspension is provided, the walls of the displacement elements are preferably made, at least at the surfaces contacting one another, of respectively different materials presenting a low mutual coefficient of friction.