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:
Feb. 20, 1990
Filed:
Jan. 23, 1989
Bernd Beicht, Gross-Umstadt, DE;
Reinhard Tinz, Gross-Bieberau, DE;
Joachim Heinemann, Weinheim, DE;
Firma Carl Freudenberg, Weinheim/Bergstrasse, DE;
Abstract
An apparatus for the temporary storage and controlled feeding of the volatile fuel components situated in the free space of a tank to the intake tube of an internal combustion engine. The apparatus includes a vent line connecting the free space to the atmosphere. In the vent line there is disposed a storage chamber containing an absorption element, as well as a line connecting the storage chamber to the intake tube, which can be shut off by an electromagnetic check valve. Between the check valve and the intake tube there is disposed an auxiliary valve with a control chamber. The auxiliary valve can be closed by a vacuum actuator in dependence upon the pressure difference between the control chamber and the atmosphere.