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. 29, 2014
Filed:
Sep. 02, 2011
Gerhard Müller-riederer, Bretzfeld, DE;
Bernd Kipp, Nörten-Hardenberg, DE;
Gerhard Müller-Riederer, Bretzfeld, DE;
Bernd Kipp, Nörten-Hardenberg, DE;
Abstract
A ventilation arrangement for the head space of the fuel tank of a vehicle consists of a valve assembly received in a housing (), which assembly is arranged to produce a maximum pressure, which is not to be exceeded, a minimum pressure below which the pressure must not fall, and a random pressure, for example, for the tank filling process, within the head space. For this purpose a valve which is biased by a spring () in the direction towards an atmospheric connector () and is characterised by a sealing plate (), and a valve biased by a spring () in the direction towards a connector () intended for connection to the head space, and a valve characterised by a sealing head () are provided, the latter of which is simultaneously connected to an electromagnetic drive in order to produce the random pressure. As a result of the constructional combination of all three valve functions in the housing (), the mutually coaxial guidance of the sealing head () and of the sealing plate (), a valve assembly is provided which takes up a small construction volume and is suitable in particular for use under the spatially limited installation conditions of a hybrid vehicle.