Patents by Inventor Yoshihiro YAMAGATA
Yoshihiro YAMAGATA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11431001Abstract: A fuel cell includes: a membrane electrode gas diffusion layer assembly; a frame member which surrounds the membrane electrode gas diffusion layer assembly; and a pair of separators with the frame member and the membrane electrode gas diffusion layer assembly sandwiched therebetween. The separators include a manifold hole through which a reaction gas is supplied or discharged. The frame member includes a manifold opening which communicates with the manifold hole, an in-plane opening in which the membrane electrode gas diffusion layer assembly is disposed, a gas flow path which communicates with the in-plane opening and the manifold opening, a seal portion which is welded to the separators around the gas flow path, and an accommodation portion which is provided between the seal portion and the gas flow path to accommodate a material of the frame member caused to flow by welding.Type: GrantFiled: December 17, 2020Date of Patent: August 30, 2022Assignee: Toyota Jidosha Kabushiki KaishaInventors: Daisuke Kanno, Yoshihiro Yamagata
-
Patent number: 11063270Abstract: A fuel cell includes: a membrane electrode gas diffusion layer assembly; a frame member which surrounds the membrane electrode gas diffusion layer assembly; and a pair of separators with the frame member and the membrane electrode gas diffusion layer assembly sandwiched therebetween. The separators include a manifold hole through which a reaction gas is supplied or discharged. The frame member includes a manifold opening which communicates with the manifold hole, an in-plane opening in which the membrane electrode gas diffusion layer assembly is disposed, a gas flow path which communicates with the in-plane opening and the manifold opening, a seal portion which is welded to the separators around the gas flow path, and an accommodation portion which is provided between the seal portion and the gas flow path to accommodate a material of the frame member caused to flow by welding.Type: GrantFiled: July 25, 2018Date of Patent: July 13, 2021Assignee: Toyota Jidosha Kabushiki KaishaInventors: Daisuke Kanno, Yoshihiro Yamagata
-
Publication number: 20210104754Abstract: A fuel cell includes: a membrane electrode gas diffusion layer assembly; a frame member which surrounds the membrane electrode gas diffusion layer assembly; and a pair of separators with the frame member and the membrane electrode gas diffusion layer assembly sandwiched therebetween. The separators include a manifold hole through which a reaction gas is supplied or discharged. The frame member includes a manifold opening which communicates with the manifold hole, an in-plane opening in which the membrane electrode gas diffusion layer assembly is disposed, a gas flow path which communicates with the in-plane opening and the manifold opening, a seal portion which is welded to the separators around the gas flow path, and an accommodation portion which is provided between the seal portion and the gas flow path to accommodate a material of the frame member caused to flow by welding.Type: ApplicationFiled: December 17, 2020Publication date: April 8, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daisuke KANNO, Yoshihiro YAMAGATA
-
Patent number: 10830680Abstract: A tension applying device is configured to fix a test substance between a lower fixing part and an upper fixing part, and apply tension between the lower fixing part and the upper fixing part while the test substance is immersed in liquid, wherein the tension applying device includes: a container storing the liquid; a lifter fixed to the lower fixing part and configured to immerse the test substance into the liquid; and a float coupled to the upper fixing part and configured to float in the liquid so as to apply tension to the test substances.Type: GrantFiled: December 17, 2018Date of Patent: November 10, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshihiro Yamagata
-
Patent number: 10481103Abstract: An inspection device is adapted for inspecting whether or not there is a foreign matter or dirt adhered to a surface of a workpiece or whether or not there is a scratch on the surface of the workpiece. A first polarizing plate having a polarizing axis in a first direction is attached to an open window of the cover part, and a second polarizing plate having a polarizing axis in a second direction orthogonal to the first direction is attached to the open window so as to open and close. In a state where the second polarizing plate is closed, the second polarizing plate overlaps the first polarizing plate. In a state where the second polarizing plate is open, the first polarizing plate and the second polarizing plate are present on a straight line connecting the outside light source and the fuel cell.Type: GrantFiled: October 11, 2018Date of Patent: November 19, 2019Assignee: Toyota Jidosha Kabushiki KaishaInventor: Yoshihiro Yamagata
-
Publication number: 20190226957Abstract: A tension applying device is configured to fix a test substance between a lower fixing part and an upper fixing part, and apply tension between the lower fixing part and the upper fixing part while the test substance is immersed in liquid, wherein the tension applying device includes: a container storing the liquid; a lifter fixed to the lower fixing part and configured to immerse the test substance into the liquid; and a float coupled to the upper fixing part and configured to float in the liquid so as to apply tension to the test substances.Type: ApplicationFiled: December 17, 2018Publication date: July 25, 2019Inventor: Yoshihiro YAMAGATA
-
Publication number: 20190120772Abstract: An inspection device is adapted for inspecting whether or not there is a foreign matter or dirt adhered to a surface of a workpiece or whether or not there is a scratch on the surface of the workpiece. A first polarizing plate having a polarizing axis in a first direction is attached to an open window of the cover part, and a second polarizing plate having a polarizing axis in a second direction orthogonal to the first direction is attached to the open window so as to open and close. In a state where the second polarizing plate is closed, the second polarizing plate overlaps the first polarizing plate. In a state where the second polarizing plate is open, the first polarizing plate and the second polarizing plate are present on a straight line connecting the outside light source and the fuel cell.Type: ApplicationFiled: October 11, 2018Publication date: April 25, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yoshihiro YAMAGATA
-
Publication number: 20190097247Abstract: A fuel cell includes: a membrane electrode gas diffusion layer assembly; a frame member which surrounds the membrane electrode gas diffusion layer assembly; and a pair of separators with the frame member and the membrane electrode gas diffusion layer assembly sandwiched therebetween. The separators include a manifold hole through which a reaction gas is supplied or discharged. The frame member includes a manifold opening which communicates with the manifold hole, an in-plane opening in which the membrane electrode gas diffusion layer assembly is disposed, a gas flow path which communicates with the in-plane opening and the manifold opening, a seal portion which is welded to the separators around the gas flow path, and an accommodation portion which is provided between the seal portion and the gas flow path to accommodate a material of the frame member caused to flow by welding.Type: ApplicationFiled: July 25, 2018Publication date: March 28, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daisuke KANNO, Yoshihiro YAMAGATA