Patents by Inventor Takeshi Masaka

Takeshi Masaka 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: 11338395
    Abstract: A welding position is provided which can prevent surface pressure drop in a seal bead in a pair of metal gaskets is determined. Joint surfaces of a pair of metal gaskets are joined to each other by welding. The pair of metal gaskets include a seal bead that encloses opening and a plurality of structures that bulge from the joint surfaces. A pressure-sensitive medium is sandwiched between the seal bead and a member to be engaged so that the pair of joined metal gaskets and the member to be engaged are stacked on one another, and the pair of joined metal gaskets are tightly engaged with the member to be engaged. The tight engagement is released, and a surface-pressure-drop location in the seal bead is detected based on a mark which remains on the pressure-sensitive medium after the release of the tight engagement.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: May 24, 2022
    Inventors: Takeshi Masaka, Kento Nagamatsu, Kazuaki Setoguchi
  • Publication number: 20210039205
    Abstract: A welding position is provided which can prevent surface pressure drop in a seal bead in a pair of metal gaskets is determined. Joint surfaces of a pair of metal gaskets are joined to each other by welding. The pair of metal gaskets include a seal bead that encloses opening and a plurality of structures that bulge from the joint surfaces. A pressure-sensitive medium is sandwiched between the seal bead and a member to be engaged so that the pair of joined metal gaskets and the member to be engaged are stacked on one another, and the pair of joined metal gaskets are tightly engaged with the member to be engaged. The tight engagement is released, and a surface-pressure-drop location in the seal bead is detected based on a mark which remains on the pressure-sensitive medium after the release of the tight engagement.
    Type: Application
    Filed: October 31, 2019
    Publication date: February 11, 2021
    Inventors: Takeshi MASAKA, Kento NAGAMATSU, Kazuaki SETOGUCHI
  • Patent number: 10780610
    Abstract: Provided is a structure in which an inserted article is easily inserted and a product is easily released from a die after molding. The structure includes a positioning mechanism which is vertically arranged on one split die, includes a positioning pin having a tapered distal end, and positions the inserted article by engaging the inserted article with the positioning pin, a stop mechanism that has a spring means assembled with the one split die and a stopper portion held by the spring means, and temporarily stops movement of the other split die when the other split die comes into contact with the stopper portion at the time of mold clamping, and a pressing mechanism that has a spring assembled with the other split die, a pusher pin, a spring assembled with the one split die, and a pusher pin, and elastically presses the inserted article by the pusher pin.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: September 22, 2020
    Assignee: NOK CORPORATION
    Inventors: Takeshi Masaka, Shigeru Watanabe
  • Patent number: 10717219
    Abstract: The purpose of the present invention is to make it possible to shorten the time required for a burr removal step and make it difficult for the burrs to detach from a sheet member in a step for removing the burrs together with the sheet member. For removal, by making the burrs to adhere to a pliable sheet member such as paper or nonwoven fabric that has been incorporated beforehand in the molding die and stripping the sheet member from the molding die, the burrs are removed together with the sheet member. The present invention is characterized in that in order to make it difficult for the burrs to detach from the sheet member during the stripping, a radiused shape with an arc-shaped cross-section is formed by the molding die on the areas surrounding the sections where the burrs adhere to the sheet member.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: July 21, 2020
    Assignee: NOK CORPORATION
    Inventors: Bunpei Yoshida, Takeshi Masaka, Shigeru Watanabe, Shun Murasaki
  • Patent number: 10513068
    Abstract: A method of manufacturing a substrate integrated gasket that includes applying an adhesive agent onto a surface of the substrate in a pattern that corresponds to a configuration of the substrate integrated gasket, wherein the pattern of the adhesive agent includes a first section having dimensions that correspond to a length and width of substrate integrated gasket, a plurality of second sections that extend away from the first section, and third sections that do not include the adhesive agent. The third sections that do not include the adhesive agent define a passageway between a mold cavity to an exterior of the mold that is configured to expel a gas from the mold cavity during injection of a molding material into the mold cavity.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: December 24, 2019
    Assignee: NOK CORPORATION
    Inventor: Takeshi Masaka
  • Patent number: 10476085
    Abstract: A unit cell that constitutes a fuel cell stack is obtained by sandwiching an electrolyte mem-brane/electrode structure with a cathode-side separator and an anode-side separator. A first resin member is provided along the entire periphery of the cathode-side separator in the outer peripheral portion of the cathode-side separator. Surfaces of the cathode-side separator are provided with sealing parts that cover a part of the first resin member and constitute a first sealing member.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: November 12, 2019
    Assignees: Honda Motor Co., Ltd., NOK Corporation
    Inventors: Satoshi Oyama, Go Morimoto, Satoru Terada, Shuhei Goto, Akihito Giga, Takahiro Hayashi, Takeshi Masaka, Satomi Yogo, Shotaro Koga
  • Publication number: 20180186047
    Abstract: A method of manufacturing a substrate integrated gasket includes an application step of applying an adhesive agent onto a surface of a substrate with a predetermined pattern which corresponds to an extending shape of the gasket to be formed, and a step of filling an uncured molding material into a cavity defined between the substrate and an inner surface of a metal mold by setting the substrate within the metal mold and mold clamping and curing the uncured molding material. The application step forms an adhesive agent main application area of the adhesive agent extending along an extending direction of the cavity, an adhesive agent partial application area coming into close contact with the metal mold in an outer side of the cavity, and an adhesive agent non-application area reaching a position in an inner side of the cavity from a position in an outer side of the cavity.
    Type: Application
    Filed: June 10, 2016
    Publication date: July 5, 2018
    Inventor: Takeshi MASAKA
  • Publication number: 20180083295
    Abstract: A unit cell that constitutes a fuel cell stack is obtained by sandwiching an electrolyte mem-brane/electrode structure with a cathode-side separator and an anode-side separator. A first resin member is provided along the entire periphery of the cathode-side separator in the outer peripheral portion of the cathode-side separator. Surfaces of the cathode-side separator are provided with sealing parts that cover a part of the first resin member and constitute a first sealing member.
    Type: Application
    Filed: March 22, 2016
    Publication date: March 22, 2018
    Inventors: Satoshi OYAMA, Go MORIMOTO, Satoru TERADA, Shuhei GOTO, Akihito GIGA, Takahiro HAYASHI, Takeshi MASAKA, Satomi YOGO, Shotaro KOGA
  • Patent number: 9895835
    Abstract: In order to achieve lower costs in a molding apparatus using a mold by reducing mold cleaning steps following releasing of the product from the mold and shortening the molding cycle, the apparatus is equipped with a plurality of fixed molds and movable molds which are heated to the temperature necessary to harden a molding material and come together by means of clamping to form a cavity, and a non-heated cold runner which supplies the molding material from an injection device to the interior of the cavity via a gate opened in the movable mold, the fixed molds and movable molds being movable between an injection stage where the injection device and cold runner (32) are present and an opening stage near the injection stage.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: February 20, 2018
    Assignee: NOK Corporation
    Inventors: Shotaro Koga, Tetsuya Urakawa, Takeshi Masaka, Yoshihiro Kurano, Shigeru Watanabe, Toshihiro Shimazoe
  • Publication number: 20170312963
    Abstract: The purpose of the present invention is to make it possible to shorten the time required for a burr removal step and make it difficult for the burrs to detach from a sheet member in a step for removing the burrs together with the sheet member. For removal, by making the burrs to adhere to a pliable sheet member such as paper or nonwoven fabric that has been incorporated beforehand in the molding die and stripping the sheet member from the molding die, the burrs are removed together with the sheet member. The present invention is characterized in that in order to make it difficult for the burrs to detach from the sheet member during the stripping, a radiused shape with an arc-shaped cross-section is formed by the molding die on the areas surrounding the sections where the burrs adhere to the sheet member.
    Type: Application
    Filed: September 17, 2015
    Publication date: November 2, 2017
    Applicant: NOK CORPORATION
    Inventors: Bunpei YOSHIDA, Takeshi MASAKA, Shigeru WATANABE, Shun MURASAKI
  • Publication number: 20170129141
    Abstract: Provided is a structure in which an inserted article is easily inserted and a product is easily released from a die after molding. The structure includes a positioning mechanism which is vertically arranged on one split die, includes a positioning pin having a tapered distal end, and positions the inserted article by engaging the inserted article with the positioning pin, a stop mechanism that has a spring means assembled with the one split die and a stopper portion held by the spring means, and temporarily stops movement of the other split die when the other split die comes into contact with the stopper portion at the time of mold clamping, and a pressing mechanism that has a spring assembled with the other split die, a pusher pin, a spring assembled with the one split die, and a pusher pin, and elastically presses the inserted article by the pusher pin.
    Type: Application
    Filed: May 11, 2015
    Publication date: May 11, 2017
    Inventors: Takeshi MASAKA, Shigeru WATANABE
  • Publication number: 20160288390
    Abstract: In order to achieve lower costs in a molding apparatus using a mold by reducing mold cleaning steps following releasing of the product from the mold and shortening the molding cycle, the apparatus is equipped with a plurality of fixed molds and movable molds which are heated to the temperature necessary to harden a molding material and come together by means of clamping to form a cavity, and a non-heated cold runner which supplies the molding material from an injection device to the interior of the cavity via a gate opened in the movable mold, the fixed molds and movable molds being movable between an injection stage where the injection device and cold runner (32) are present and an opening stage near the injection stage.
    Type: Application
    Filed: March 20, 2014
    Publication date: October 6, 2016
    Applicant: NOK CORPORATION
    Inventors: Shotaro KOGA, Tetsuya URAKAWA, Takeshi MASAKA, Yoshihiro KURANO, Shigeru WATANABE, Toshihiro SHIMAZOE
  • Patent number: 9269967
    Abstract: Provided is a gasket which can improve a handling property of the gasket by enhancing a rigidity of a carrier, can secure a space saving without increasing a thickness of the gasket, and can improve a yield ratio of a resin material, in the gasket of a type that a gasket body is integrated with the resin carrier. A planar gasket used by being pinched between two members superposed with each other has a gasket body achieving a seal action, and a carrier retaining the gasket body, the carrier is formed as a predetermined planar shape by a metal mold with a resin material, and is formed as a stepped shape by setting a partial portion which is superposed with the gasket body on a plane to a thin portion, and setting the other portion which is not superposed with the gasket body on the plane to a thick portion.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: February 23, 2016
    Assignee: NOK Corporation
    Inventors: Takeshi Masaka, Yoshihiro Kurano, Shotaro Koga
  • Patent number: 9178226
    Abstract: A fuel cell sealing structure has a power generating body, and first and second separators arranged in both sides in a thickness direction of the power generating body. On a surface in one side in a thickness direction of the first separator, formed integrally first and second sealing protrusions respectively brought into close contact with an outer peripheral portion of the power generating body and the second separator in an outer peripheral side of the first sealing protrusion, and a short circuit prevention rib protruding in line with the first and second sealing protrusions by an electrically insulating rubber-like elastic material. On a surface in another side thereof, formed integrally a third sealing protrusion brought into close contact with a surface in an opposite side to the power generating body in the second separator, by the electrically insulating rubber-like elastic material.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: November 3, 2015
    Assignee: NOK Corporation
    Inventors: Takeshi Masaka, Yoshihiro Kurano, Shinichiro Taguchi, Kenichi Kikuchi, Tetsuya Urakawa
  • Publication number: 20130065158
    Abstract: Provided is a gasket which can improve a handling property of the gasket by enhancing a rigidity of a carrier, can secure a space saving without increasing a thickness of the gasket, and can improve a yield ratio of a resin material, in the gasket of a type that a gasket body is integrated with the resin carrier. A planar gasket used by being pinched between two members superposed with each other has a gasket body achieving a seal action, and a carrier retaining the gasket body, the carrier is formed as a predetermined planar shape by a metal mold with a resin material, and is formed as a stepped shape by setting a partial portion which is superposed with the gasket body on a plane to a thin portion, and setting the other portion which is not superposed with the gasket body on the plane to a thick portion.
    Type: Application
    Filed: May 26, 2011
    Publication date: March 14, 2013
    Applicant: NOK CORPORATION
    Inventors: Takeshi Masaka, Yoshihiro Kurano, Shotaro Koga
  • Publication number: 20120107718
    Abstract: A fuel cell sealing structure has a power generating body, and first and second separators arranged in both sides in a thickness direction of the power generating body. On a surface in one side in a thickness direction of the first separator, formed integrally first and second sealing protrusions respectively brought into close contact with an outer peripheral portion of the power generating body and the second separator in an outer peripheral side of the first sealing protrusion, and a short circuit prevention rib protruding in line with the first and second sealing protrusions by an electrically insulating rubber-like elastic material. On a surface in another side thereof, formed integrally a third sealing protrusion brought into close contact with a surface in an opposite side to the power generating body in the second separator, by the electrically insulating rubber-like elastic material.
    Type: Application
    Filed: May 27, 2010
    Publication date: May 3, 2012
    Applicant: NOK CORPORATION
    Inventors: Takeshi Masaka, Yoshihiro Kurano, Shinichiro Taguchi, Kenichi Kikuchi, Tetsuya Urakawa