Patents by Inventor Yasuo Eto

Yasuo Eto 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).

  • Electric power tool
    Patent number: 6745883
    Abstract: In an electric power tool having a clutch ring for adjusting a fastening torque, an outer member 3 which are lower in hardness than a base member 2 of the clutch ring 1 has a plurality of projections discontinuously arranged on the outer peripheral face of the base member 2.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: June 8, 2004
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yasuo Eto, Hideki Kurosawa, Yoshiaki Adachi, Kenichi Takaada
  • Electric power tool
    Publication number: 20030178280
    Abstract: In an electric power tool having a clutch ring for adjusting a fastening torque, an outer member 3 which are lower in hardness than a base member 2 of the clutch ring 1 has a plurality of projections discontinuously arranged on the outer peripheral face of the base member 2.
    Type: Application
    Filed: December 18, 2002
    Publication date: September 25, 2003
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Yasuo Eto, Hideki Kurosawa, Yoshiaki Adachi, Kenichi Takaada