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:
Apr. 17, 2012
Filed:
Apr. 28, 2009
Stephan Ammermann, Gottingen, DE;
Heiko Freter, Einbeck, DE;
Stephan Ammermann, Gottingen, DE;
Heiko Freter, Einbeck, DE;
A. Kayser Automotive Systems GmbH, Einbeck, DE;
Abstract
An active carbon filter unit for a tank system consists of a housing () in which two chambers () are formed, carrying an active carbon filling, which form a section of a flow path which at its one end leads via a valve () and an air filter () into the ambient atmosphere and at its other end leads via a valve () and a non-return valve () to a connection for producing an underpressure or into the suction region of an internal combustion engine and via a connection () into the tank system. The valves (), the non-return valve () and a housing part () receiving the electrical connections thereof are part of a uniform control module (), which is exchangeably inserted into a recess () of the housing (). The control module () is equipped with almost all functional elements of a technical nature relating to measurement, control and energy supply which are necessary for an aeration and air removal operation, a flushing operation directed to a regeneration of the active carbon, and a tightness check of the tank system.