Patent · US Expired

Unloading mechanisms for air compressors

US4505648A · kind A · utility

6Cited by

1References

4Claims

0Family size

Assignee

Wabco Fahrzeughremsen GmbH · DE

Inventors

Werner Heger · Lehrte, DE
Wolfgang Kaltenthaler · Wennigsen (Deister), DE
Helmut Wilke · Neunburg vorm Wald, DE

Key dates

Filing date	Sep 13, 1982
Grant date	Mar 19, 1985
Priority date	—
Expiry date	Sep 13, 2002

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B49/246
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A pressure gas generating system including the compressor which is switched to a no-load condition when a predetermined pressure level is reached. The system employs either a regulator or a governor to allow the free exchange of gas between the suction chamber and the compression chamber to prevent the development of high temperatures. In the pressure regulator control system, the opening of the discharge valve is enlarged and is vented into the atmosphere by the pressure regulator so that the compressor continues to operate with reduced drive power and generates less heat during the no-load condition. In the pressure control system, the pressure discharge valve as well as the suction valve are opened during the no-load condition.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.