Patents by Inventor Jiro Hirao

Jiro Hirao 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).

  • Method for manufacturing an overrunning clutch
    Patent number: 8297420
    Abstract: Rollers and springs are installed in notch portions of a clutch outer (S104), an inscribed circle diameter of the rollers is measured in a state in which the rollers are placed in contact with stopping portions by pressure from the springs (S105), and an outside diameter of a cylindrical portion is determined from the inscribed circle diameter measured value such that a predetermined amount of roller bite is achieved (S106). Then, the outside diameter of the cylindrical portion is finished so as to have the determined value of the outside diameter (S108). An overrunning clutch is assembled by pairing together the clutch outer, rollers, and springs and the clutch inner (S110).
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: October 30, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koichiro Kamei, Kazuhiro Odahara, Hidekazu Katayama, Jiro Hirao
  • Method for manufacturing an overrunning clutch
    Publication number: 20080053777
    Abstract: Rollers and springs are installed in notch portions of a clutch outer (S104), an inscribed circle diameter of the rollers is measured in a state in which the rollers are placed in contact with stopping portions by pressure from the springs (S105), and an outside diameter of a cylindrical portion is determined from the inscribed circle diameter measured value such that a predetermined amount of roller bite is achieved (S106). Then, the outside diameter of the cylindrical portion is finished so as to have the determined value of the outside diameter (S108). An overrunning clutch is assembled by pairing together the clutch outer, rollers, and springs and the clutch inner (S110).
    Type: Application
    Filed: March 9, 2007
    Publication date: March 6, 2008
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koichiro Kamei, Kazuhiro Odahara, Hidekazu Katayama, Jiro Hirao
  • Starter
    Patent number: 6382037
    Abstract: To prevent an attracting force to the plunger from becoming insufficient, at least one of an output shaft and a thrust spline is formed from magnetic material having a lower relative permeability than iron.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: May 7, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takehiro Kobayashi, Shigeru Shiroyama, Akira Kuragaki, Koichiro Kamei, Hidekazu Katayama, Masahiko Tsukahara, Tadanori Yamaguchi, Jiro Hirao