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:
Jul. 20, 2010
Filed:
Dec. 24, 2004
Hiroshi Suzuki, Nishikamo-gun, JP;
Go Tejima, Toyota, JP;
Tomoaki Nakashima, Toyota, JP;
Ryo Akagawa, Okazaki, JP;
Hiroshi Suzuki, Nishikamo-gun, JP;
Go Tejima, Toyota, JP;
Tomoaki Nakashima, Toyota, JP;
Ryo Akagawa, Okazaki, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A process of disassembling a fuel cellsupplies a fluid to both a fuel gas conduitand an oxidizing gas conduit. Since outlets of the respective gas conduitsandare shielded, the internal pressure or in-passage pressure of the respective gas conduitsandgradually rises and eventually exceeds a specific in-passage pressure level for power generation of the fuel cell. The high in-passage pressure expands a gas diffusion electrodeof a membrane electrode assembly (MEA)and a separator, which define the fuel gas conduit, in opposite directions to make a clearance between the gas diffusion electrodeand the separator. Similarly the high in-passage pressure expands a gas diffusion electrodeof the MEAand a separator, which define the oxidizing gas conduit, in opposite directions to make a clearance between the gas diffusion electrodeand the separator. The supplied fluid then flows out through these clearances into seals between the separatorsandand the MEA. These flows raise the in-passage pressure and release the seals.