The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2014
Filed:
Jul. 15, 2011
Uwe Haas, Stammham, DE;
Thomas Anzenberger, Ingolstadt, DE;
Uwe Haas, Stammham, DE;
Thomas Anzenberger, Ingolstadt, DE;
Audi AG, Ingolstadt, DE;
Abstract
Expansion reservoir () for a coolant circuit, having a fill opening () that can be closed by a lid () and is located in the geodetically upper region of the expansion reservoir (), wherein a differential-pressure-controlled valve () having at least two switching positions is integrated into the lid (), and having at least one inlet port () which opens into a lid region (), and an outlet port () in the geodetically lower region of the expansion reservoir (), wherein the inlet port () is closed by the valve () in a first switching position and is opened in at least one second switching position, thus allowing the inlet port () to vent into the expansion reservoir ().