Patent · US Expired

Oil lubricated vacuum pump including an oil separator disposed adjacent of its suction opening

US4360326A · kind A · utility

8Cited by

4References

5Claims

0Family size

Assignee

Volkswagenwerk AG · DE

Inventors

Peter Buchholz · Gifhorn, DE
Rolf Warnecke · Ulmen, DE

Key dates

Filing date	Jan 31, 1980
Grant date	Nov 23, 1982
Priority date	—
Expiry date	Jan 31, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/789
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An oil separator in combination with an oil lubricated vacuum pump. The separator includes a hollow housing having one end disposed adjacent the suction opening of the pump and the other end adapted for attachment to a vacuum line. A valve seat comprises an internal surface of the housing, and a resilient elastic sealing element having a relatively low mass is positioned under tension on the valve seat between the seat and the suction opening. The sealing element permits a stream of air from the vacuum line to enter the suction opening of the pump while preventing oil from the pump from passing into the vacuum line.

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