Patents by Inventor Kensuke Hikosaka

Kensuke Hikosaka 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).

  • Thread forming tap
    Patent number: 6685573
    Abstract: A thread forming tap which is capable of reducing tapping torque as well as improving durability by avoiding an increase of an apparent area of margins of external thread that causes interference with a grinding stone. The thread forming tap has an external thread in a screw shape with alternately linked margins and reliefs for forming an internal thread by plastic deformation upon having the margins of the external thread bite into a surface of a prepared hole of a workpiece. A helix of the margins of the external thread is in a direction opposite to a direction of a helix of the external thread relative to an axis of the tap.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: February 3, 2004
    Assignee: OSG Corporation
    Inventors: Kensuke Hikosaka, Haruyasu Andoh
  • Thread forming tap
    Publication number: 20030078109
    Abstract: A thread forming tap which is capable of reducing tapping torque as well as improving durability by avoiding an increase of an apparent area of margins of external thread that causes interference with a grinding stone. The thread forming tap has an external thread in a screw shape with alternately linked margins and reliefs for forming an internal thread by plastic deformation upon having the margins of the external thread bite into a surface of a prepared hole of a workpiece. A helix of the margins of the external thread is in a direction opposite to a direction of a helix of the external thread.
    Type: Application
    Filed: July 10, 2002
    Publication date: April 24, 2003
    Inventors: Kensuke Hikosaka, Haruyasu Andoh