Patents by Inventor Tsuyoshi Yamakawa

Tsuyoshi Yamakawa 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).

  • ROTATING MEMBER AND METHOD FOR COATING THE SAME
    Publication number: 20100124490
    Abstract: A pulsed discharge is generated between tip ends of a rotating member such as a blade and a discharge electrode including a hard material such as cBN in dielectric liquid or gas by a power supply for discharge to melt the discharge electrode, and a part of the discharge electrode is attached to the tip end of the rotating member to form an abrasive coating film including the hard materials such as cBN.
    Type: Application
    Filed: April 17, 2009
    Publication date: May 20, 2010
    Applicants: IHI CORPORATION, C/O MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Hiroyuki Ochiai, Mitsutoshi Watanabe, Mikiya Arai, Shigeru Saburi, Tsuyoshi Yamakawa, Shogu Tsugumi, Jun Sakai, Akihiro Goto, Masao Akiyoshi
  • ROTATING MEMBER AND METHOD FOR COATING THE SAME
    Publication number: 20090200748
    Abstract: A pulsed discharge is generated between tip ends of a rotating member such as a blade and a discharge electrode including a hard material such as cBN in dielectric liquid or gas by a power supply for discharge to melt the discharge electrode, and a part of the discharge electrode is attached to the tip end of the rotating member to form an abrasive coating film including the hard materials such as cBN.
    Type: Application
    Filed: April 17, 2009
    Publication date: August 13, 2009
    Applicants: IHI CORPORATION, C/O MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Hiroyuki Ochiai, Mitsutoshi Watanabe, Mikiya Arai, Shigeru Saburi, Tsuyoshi Yamakawa, Shogo Tsugumi, Jun Sakai, Tsunao Tezuka, Akihiro Goto, Masao Akiyoshi
  • Rotating member and method for coating the same
    Patent number: 7537809
    Abstract: A pulsed discharge is generated between tip ends of a rotating member such as a blade and a discharge electrode including a hard material such as cBN in dielectric liquid or gas by a power supply for discharge to melt the discharge electrode, and a part of the discharge electrode is attached to the tip end of the rotating member to form an abrasive coating film including the hard materials such as cBN.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: May 26, 2009
    Assignees: IHI Corporation, Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroyuki Ochiai, Mitsutoshi Watanabe, Mikiya Arai, Shigeru Saburi, Tsuyoshi Yamakawa, Shogo Tsugumi, Jun Sakai, Tsunao Tezuka, Akihiro Goto, Masao Akiyoshi
  • Rotating member and method for coating the same
    Publication number: 20050063827
    Abstract: A pulsed discharge is generated between tip ends of a rotating member such as a blade and a discharge electrode including a hard material such as cBN in dielectric liquid or gas by a power supply for discharge to melt the discharge electrode, and a part of the discharge electrode is attached to the tip end of the rotating member to form an abrasive coating film including the hard materials such as cBN.
    Type: Application
    Filed: October 29, 2004
    Publication date: March 24, 2005
    Applicants: Ishikawajima-Harima Heavy Industries Co., Ltd., Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroyuki Ochiai, Mitsutoshi Watanabe, Mikiya Arai, Shigeru Saburi, Tsuyoshi Yamakawa, Shogo Tsugumi, Jun Sakai, Tsunao Tezuka, Akihiro Goto, Masao Akiyoshi
  • Elastic support members for an electric actuator
    Patent number: 4682135
    Abstract: An electric actuator comprising a housing, a permanent magnet disposed within the housing, an axially movable armature disposed within the permanent magnet, an actuating coil supported by the housing for driving the armature to axially move, and an axially movable actuating rod fixedly connected to the armature, wherein the electric actuator further comprises a pair of elastic support members having radially inner end portions fixedly connected to the actuating rod and radially outer end portions fixedly connected to the housing, respectively.
    Type: Grant
    Filed: April 1, 1986
    Date of Patent: July 21, 1987
    Assignee: Teijin Seiki Company Limited
    Inventor: Tsuyoshi Yamakawa