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:
Mar. 26, 2002
Filed:
Feb. 28, 2000
Matthias Bronold, Berlin, DE;
Christian Leu, Berlin, DE;
Abstract
A fuel cell stack including bipolar plates disposed between membrane-electrode units. The stack has two end-position monopolar plates. Two current collectors and two end plates enclose the stack on opposite sides said current collectors have at least one collector passage hole with a port end face. The stack includes at least one connection port and substantially annular sealing elements. The two end plates have at least one end plate passage hole communicating with the at least one connection port and the at least one collector passage hole. The sealing elements each have an opening. A single sealing element completely seals the transporting of media between the end face of a connection port and the end-position media-carrying plate by being disposed in the passage holes in the end plate and the current collector for transporting the reaction and cooling media to and from the opening in the adjoining end-position plate.