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:
Jul. 11, 2017
Filed:
Nov. 19, 2011
Timm Heidemeyer, Cologne, DE;
Volker Treudt, Windeck, DE;
Timm Heidemeyer, Cologne, DE;
Volker Treudt, Windeck, DE;
Kautex Textron GmbH & Co. KG, Bonn, DE;
Abstract
The invention relates to a ventilating device () for liquid containers (), in particular for liquid containers () for an aqueous urea solution, including a housing () which can be mounted at an opening of the liquid container () and has a first opening () to the liquid container () and a second opening () to the surroundings of the liquid container (), a diaphragm () which is arranged within the housing (), is permeable to air, is impermeable to liquid and is configured in such a way that a deformation of the diaphragm () takes place by a pressure change in the liquid container (), as a result of which the volume within the housing () within the diaphragm () changes, with the result that the displaced volume leaves the housing () via the second opening () to the surroundings of the liquid container (). Furthermore, the invention relates to a liquid container () having a ventilating device () according to the invention.