Sander Or Grinder Patents (Class D08/62)
  • Publication number: 20020035890
    Abstract: A metal bonded drilling tool which is improved in grinding performance with a long life and can drill a hole in a dry condition without the need for water. The metal bonded drilling tool includes a cylindrical body having an open front end portion, a shank integral with the cylindrical body and having a threaded hole for use in mounting the tool to a rotary tool, and numerous abrasive grains bonded to a front edge of the cylindrical body and to inner and outer cylindrical surfaces of the front end portion of the cylindrical body by a bond member formed primarily of copper alloy.
    Type: Application
    Filed: September 26, 2001
    Publication date: March 28, 2002
    Applicant: Tenryu Seikyo Kabushiki Kaisha
    Inventors: Yoshikazu Kusachi, Akihiko Nakagawa