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:
Jun. 26, 1990
Filed:
Apr. 21, 1989
Applicant:
Inventors:
Assignee:
Audi AG., Ingolstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
123 / ; 1231 / ;
Abstract
An apparatus for introducing a fuel additive into the fuel tank of an automotive vehicle comprising a pumping device including a pneumatically actuated displacement pump the pumping element of which is displaceable by pressure against the force of a pretensioned spring by means of a control valve and the control valve is preferably directly actuable by the lid of the fuel tank.
Naumann, Fritz. (1990). Apparatus for introducing a fuel additive to the fuel tank of an (U.S. Patent No. 4936261). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4936261
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