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:
Nov. 01, 2011
Filed:
Dec. 11, 2007
Stefan Feichtinger, Büchl, AT;
Stefan Feichtinger, Büchl, AT;
MAGNA STEYR Fuel Systems GesmbH, Sinabelkirchen, AT;
Abstract
A tank filler neck comprises an outer wall (), an inner wall () and an inner space () closed off from the environment during operation. In order to enable the pressure in this space () to be equalized in both directions, a negative and positive pressure relief valve () is provided in the annular space () between outer wall () and inner wall (). The valve comprises a partition () with holes () distributed over the circumference, said partition dividing the annular space () between outer wall () and inner wall () into a first annular space () connected to the atmosphere and a second annular space () connected to the inner space (), a first valve ring () in the first annular space () and a second valve ring () in the second annular space (), which valve rings have first zones () and second offset zones () alternating in the circumferential direction, see FIG.