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. 20, 2018
Filed:
Oct. 22, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Makoto Takeyama, Toyota, JP;
Tateki Takayama, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A fuel cell end plate that is provided at an end portion of a fuel cell includes a through-hole which penetrates the end plate and through which at least one of a fuel gas, an oxygen containing gas and cooling water fed to the fuel cell is distributed and a seal which covers an inner circumferential surface of the through-hole and a circumferential edge surface around the through-hole. The cutting processing mark of a corner portion connected from the inner circumferential surface of the through-hole to the circumferential edge surface is a processing mark in which a curved surface processing mark that is formed with a curved surface from any one of the inner circumferential surface and the circumferential edge surface toward the side of the other surface and a linear processing mark that is formed from the curved surface processing mark to the other surface and that is a straight line in a cross section in an axial direction of the through-hole are continuous.