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. 10, 1990
Filed:
Nov. 21, 1989
Applicant:
Inventor:
Armin Bauder, Neckarsulm, DE;
Assignee:
AUDI AG, , DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
180 694 ; 123519 ;
Abstract
A venting device for the fuel tank of a motor vehicle has a venting line in which a fuel vapor filter is disposed. The filter is connected to the atmosphere through an aeration device, the outlet of which lies in the road region of the vehicle. To prevent an excessive vacuum arising in the venting system, when the outlet is plugged, a vacuum limiting valve is connected to the aeration line. This valve, at a particular vacuum in the aerating line, connects this line with the atmosphere at a place above the outlet of the aeration line.