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. 03, 2017
Filed:
Nov. 13, 2014
Dr. Ing. H.c. F. Porsche Aktiengesellschaft, Stuttgart, DE;
Markus Timmer, Leonberg, DE;
Stephan Becker, Sachsemheim, DE;
DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT, Stuttgart, DE;
Abstract
A tank ventilation valve has a housing (), a closing member (), a sealing seat () and a first space (). A second space () is connected to the first space () via a control opening () that surrounds the sealing seat (). A spring () pretensions the closing member () against the sealing seat () and closes the control opening (). The closing member () opens as a function of a pressure difference between the first and second spaces (). The opened closing member () opens the control opening () so that the first space () is connected to a first line () connects to fresh air. The second space () is connected to a second line () that is attachable to a filter. Structure is provided to exert a further negative pressure on the closing member () to move the closing member () into the open position.