Patent · US Expired

Apparatus for filling a hollow and closed system provided with only one filling aperture

US4149574A · kind A · utility

12Cited by

2References

8Claims

0Family size

Assignee

Sihi GmbH · DE

Inventors

Wilfried Lehmann · Heiligenstedten, DE
Erwin Zimmermann · Heiligenstedten, DE

Key dates

Filing date	Oct 18, 1977
Grant date	Apr 17, 1979
Priority date	—
Expiry date	Oct 18, 1997

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/3109
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

Apparatus for selectively charging and evacuating a separate liquid system such as an engine cooling system, refrigeration system or the like and having a liquid storage tank, a single fluid pump and valve means for selectively connecting both the pump inlet and pump outlet for either pumping liquid from the storage tank via a connector conduit to the separate system or from the separate system via the connector conduit to the storage tank.

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