Patent · US Active

Coolant conditioning unit comprising a non-return valve

US8691090B2 · kind B2 · utility

2Cited by

6References

20Claims

0Family size

Assignee

Hengst GmbH & Co. KG · DE

Inventors

Ludger Schachtrup · Hachenburg, DE
Richard Eberle · Sankt Ingbert, DE

Key dates

Filing date	Jul 13, 2005
Grant date	Apr 8, 2014
Priority date	—
Expiry date	Mar 20, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01P2011/061
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Coolant conditioning unit for coolant of an internal combustion engine. The unit includes a cup-shaped housing, a removable cover for closing the housing, a replaceable filter insert arranged in the housing and being detachably connected to the cover, an inlet, an anti-drain valve that is normally open during filtering, and a stop valve arranged in the inlet. The stop valve is held in an open position by the filter insert and closes when the filter insert is removed from the housing and closes before the cover has been completely separated from the housing. This abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

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