Nichias Corporation

Toyota Jidosha Kabushiki Kaisha

Tetsuo Ohinata

Atsushi Omura

Toshiyuki Suzuki

Yasuyuki Asai

Chisato Kato

Kenichiro Ishikawa

Naohiro Takeshita

Kouji Nagai

Tsuyoshi Inagaki

Toru Segawa

Katsuya Kusuno

Hideto Ishikawa

Naochiro Takeshita

Hideto Nakano

A gasket material including: a metal plate; and a fluorine rubber layer having a Vickers hardness of 15 to 30 N/mm, being provided on one side or both sides of the metal plate, and obtained from a fluorine rubber composition containing a fluorine rubber polymer. The gasket material maintains a sealing bead surface at a high surface pressure without changing the engine block design and the gasket design and also possible to absorb flange surface roughness that is an original purpose of the rubber layer.

Gasket material comprising a metal plate and a fluorine rubber layer having a specific vickers hardness

The present invention provides a separator for fuel cell containing: a flat plate member; a gas passage-side member provided on one side of the flat plate member and having passages for passing a reactant gas therethrough; and a cooling water passage-side member provided on the other side of the flat plate member and having passages for passing cooling water therethrough, wherein the gas passage-side member and the cooling water passage-side member are formed from first and second conductive resin compositions which are different from each other, respectively, and the difference between the thermal expansion coefficient of the gas passage-side member in its thickness direction and the thermal expansion coefficient of the cooling water passage-side member in a direction perpendicular to its thickness direction is 25&#xd7;10/K or smaller, and wherein the flat plate member contains at least one of the first and second conductive resin compositions.

Separator for fuel cell and process for producing the same

A rubber gasket to be disposed in a compressed state between separators of a fuel cell includes a sealing portion having a sectional shape of a two-projection structure with a first projection having a curved slope of a first curvature radius (D), and a second projection provided on the first projection and having a second curvature radius (H). A pedestal portion extends in a horizontal direction with a predetermined thickness continuously from a foot portion of the curved slope of the first projection and has a flat bottom surface.

Rubber gasket for separator of fuel cell

Growing community of inventors

Shizuoka, Japan

Tetsuo Ohinata