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:
Jan. 11, 2005
Filed:
Jan. 31, 2003
Applicants:
Peter Haushaelter, Moenchengladbach, DE;
Michael Benra, Witten, DE;
Rolf Lappan, Cologne, DE;
Martin Nowak, Burscheid, DE;
Inventors:
Peter Haushaelter, Moenchengladbach, DE;
Michael Benra, Witten, DE;
Rolf Lappan, Cologne, DE;
Martin Nowak, Burscheid, DE;
Assignee:
Pierburg GmbH, Neuss, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 2500 ;
U.S. Cl.
CPC ...
Abstract
A flap valve for fuel aggregates, such as fuel cells, comprises a flap arranged within a flow channel. A shaft for pivoting the flap is connected to the flap. Further, a seal disposed in a recess of the channel wall is provided, which comprises at least one pressure pocket connected with the flow channel.