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:
Apr. 05, 2005
Filed:
Jan. 17, 2001
Michael Nau, Dornhan/Alschfeld, DE;
Nikolaus Benninger, Vaihingen, DE;
Marc Bareis, Markgroeningen, DE;
Frank Ilgner, Karlsruhe, DE;
Horst Harndorf, Schwieberdingen, DE;
Michael Nau, Dornhan/Alschfeld, DE;
Nikolaus Benninger, Vaihingen, DE;
Marc Bareis, Markgroeningen, DE;
Frank Ilgner, Karlsruhe, DE;
Horst Harndorf, Schwieberdingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A metering unit for metering liquid and/or gaseous educts by means of a feed pump for a fuel cell system, including at least one lead line for delivering an educt flow, at least one control piston, and a differential pressure valve for regulating the educt flow; the differential pressure valve has a regulatable throttling cross section, which is variable automatically, as a function of a flow pressure dictated by the control piston, in order to regulate the educt flow. The lead line leads to the control piston, and between the control piston and the differential pressure valve a first and a second connecting line are provided.