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. 31, 2017
Filed:
Oct. 18, 2011
Volker Treudt, Windeck, DE;
Volker Treudt, Windeck, DE;
Kautex Textron GmbH & Co. KG, Bonn, DE;
Abstract
The invention relates to a liquid reservoir (), in particular for an aqueous urea solution, comprising a buffer storage means () arranged on the bottom of the liquid reservoir () in the installation position, a liquid delivery unit (), at least one, preferably a plurality of first filter elements () arranged on the bottom in the installation position outside the buffer storage means (), each of which first filter elements is connected to the liquid delivery unit () via a liquid line (), the first filter elements () being constructed such that the filter fabric of the first filter elements () is permeable to the liquid located in the liquid reservoir () and impermeable to air, a second filter element () being arranged between the interior of the buffer storage means () and the liquid delivery unit (), which second filter element is constructed such that the filter fabric of the second filter element () is permeable to the liquid located in the liquid reservoir () and impermeable to air, the breakthrough pressure of the second filter element (), at which air is delivered through the filter element, being greater than the breakthrough pressure of the first filter elements (), furthermore comprising a first valve () between the liquid delivery unit () and the first filter elements (), the opening pressure of the first valve () being smaller than the breakthrough pressure of the second filter element ().