Patents by Inventor Tetsuji Murata

Tetsuji Murata 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).

  • Hollow rack end diameter reducing method
    Patent number: 8595936
    Abstract: The one end side portion is nipped by a jig including a jig member having a pair of convex portions which are to be fitted to a depressions in contact with a tooth side face and a inclined portion and positioning a bar and a jig member which is to be clamped/opened with respect to the jig member. A die having an inside diameter smaller than the diameter of the outer periphery is pressed onto the outer periphery of the end portion of the cylindrical end side portion projected from the jig up to a press-in depth determined preliminarily based on the rack, so as to reduce the diameter of the end portion.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: December 3, 2013
    Assignee: Neturen Co., Ltd.
    Inventors: Takashi Yamawaki, Ryosuke Suzuki, Tetsuji Murata, Tsuyoshi Yamamoto, Yutaka Kiyosawa
  • Hollow rack and hollow rack manufacturing method
    Patent number: 8499660
    Abstract: The one end side portion is nipped by a jig including a jig member having a pair of convex portions which are to be fitted to a depressions in contact with a tooth side face and a inclined portion and positioning a bar and a jig member which is to be clamped/opened with respect to the jig member. A die having an inside diameter smaller than the diameter of the outer periphery is pressed onto the outer periphery of the end portion of the cylindrical end side portion projected from the jig up to a press-in depth determined preliminarily based on the rack, so as to reduce the diameter of the end portion.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: August 6, 2013
    Assignee: Neturen Co., Ltd.
    Inventors: Takashi Yamawaki, Ryosuke Suzuki, Tetsuji Murata, Tsuyoshi Yamamoto, Yutaka Kiyosawa
  • Hollow Rack End Diameter Reducing Method
    Publication number: 20120102739
    Abstract: The one end side portion is nipped by a jig including a jig member having a pair of convex portions which are to be fitted to a depressions in contact with a tooth side face and a inclined portion and positioning a bar and a jig member which is to be clamped/opened with respect to the jig member. A die having an inside diameter smaller than the diameter of the outer periphery is pressed onto the outer periphery of the end portion of the cylindrical end side portion projected from the jig up to a press-in depth determined preliminarily based on the rack, so as to reduce the diameter of the end portion.
    Type: Application
    Filed: January 10, 2012
    Publication date: May 3, 2012
    Applicant: NETUREN CO., LTD.
    Inventors: Takashi Yamawaki, Ryosuke Suzuki, Tetsuji Murata, Tsuyoshi Yamamoto, Yutaka Kiyosawa
  • Hollow Rack and Hollow Rack Manufacturing Method
    Publication number: 20120103120
    Abstract: The one end side portion is nipped by a jig including a jig member having a pair of convex portions which are to be fitted to a depressions in contact with a tooth side face and a inclined portion and positioning a bar and a jig member which is to be clamped/opened with respect to the jig member. A die having an inside diameter smaller than the diameter of the outer periphery is pressed onto the outer periphery of the end portion of the cylindrical end side portion projected from the jig up to a press-in depth determined preliminarily based on the rack, so as to reduce the diameter of the end portion.
    Type: Application
    Filed: January 10, 2012
    Publication date: May 3, 2012
    Applicant: NETUREN CO., LTD.
    Inventors: Takashi Yamawaki, Ryosuke Suzuki, Tetsuji Murata, Tsuyoshi Yamamoto, Yutaka Kiyosawa
  • Hollow rack, hollow rack end diameter reducing method, hollow rack end diameter reducing apparatus, and hollow rack manufacturing method
    Patent number: 8104369
    Abstract: The one end side portion is nipped by a jig including a jig member having a pair of convex portions which are to be fitted to a depressions in contact with a tooth side face and a inclined portion and positioning a bar and a jig member which is to be clamped/opened with respect to the jig member. A die having an inside diameter smaller than the diameter of the outer periphery is pressed onto the outer periphery of the end portion of the cylindrical end side portion projected from the jig up to a press-in depth determined preliminarily based on the rack, so as to reduce the diameter of the end portion.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: January 31, 2012
    Assignee: Neturen Co., Ltd.
    Inventors: Takashi Yamawaki, Ryosuke Suzuki, Tetsuji Murata, Tsuyoshi Yamamoto, Yutaka Kiyosawa
  • HOLLOW RACK, HOLLOW RACK END DIAMETER REDUCING METHOD, HOLLOW RACK END DIAMETER REDUCING APPARATUS, AND HOLLOW RACK MANUFACTURING METHOD
    Publication number: 20080229856
    Abstract: The one end side portion is nipped by a jig including a jig member having a pair of convex portions which are to be fitted to a depressions in contact with a tooth side face and a inclined portion and positioning a bar and a jig member which is to be clamped/opened with respect to the jig member. A die having an inside diameter smaller than the diameter of the outer periphery is pressed onto the outer periphery of the end portion of the cylindrical end side portion projected from the jig up to a press-in depth determined preliminarily based on the rack, so as to reduce the diameter of the end portion.
    Type: Application
    Filed: March 20, 2008
    Publication date: September 25, 2008
    Applicant: NETUREN Co., Ltd. (a Japanese corporation)
    Inventors: Takashi Yamawaki, Ryosuke Suzuki, Tetsuji Murata, Tsuyoshi Yamamoto, Yutaka Kiyosawa