Patents by Inventor Haruhiko Amakusa

Haruhiko Amakusa 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).

  • Dynamic pressure releasing method of grinding liquid in grinding operation, grinding method using the releasing method, and grinding stone for use in the grinding method
    Patent number: 8197305
    Abstract: A dynamic pressure in the coolant supplied between a rotating grinding wheel and a rotating workpiece is released by making at least one of oblique grooves on the grinding wheel pass vertically through a contact surface on which a grinding surface of the grinding wheel contacts the workpiece. Where one and the other side intersection points are defined as intersection points at which both ends of each oblique groove respectively cross extension lines of one and the other side edges parallel to a grinding wheel circumferential direction of the contact surface, the other side intersection point of each oblique groove overlaps the one side intersection point of an oblique groove next to each such oblique groove by a predetermined overlap amount in the grinding wheel circumferential direction, and the length in the grinding wheel circumferential direction of the contact surface is made to be shorter than the overlap amount.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: June 12, 2012
    Assignee: JTEKT Corporation
    Inventors: Masahiro Ido, Satoshi Ohyabu, Haruhiko Amakusa, Akio Mori
  • COOLANT DYNAMIC PRESSURE RELEASING METHOD IN GRINDING OPERATION, GRINDING METHOD USING THE RELEASING METHOD, AND GRINDING WHEEL FOR USE IN THE GRINDING METHOD
    Publication number: 20100041321
    Abstract: A dynamic pressure in the coolant supplied between a rotating grinding wheel and a rotating workpiece is released by making at least one of oblique grooves on the grinding wheel pass vertically through a contact surface on which a grinding surface of the grinding wheel contacts the workpiece. Where one and the other side intersection points are defined as intersection points at which both ends of each oblique groove respectively cross extension lines of one and the other side edges parallel to a grinding wheel circumferential direction of the contact surface, the other side intersection point of each oblique groove overlaps the one side intersection point of an oblique groove next to each such oblique groove by a predetermined overlap amount in the grinding wheel circumferential direction, and the length in the grinding wheel circumferential direction of the contact surface is made to be shorter than the overlap amount.
    Type: Application
    Filed: October 9, 2007
    Publication date: February 18, 2010
    Applicant: JTEKT CORPORATION
    Inventors: Masahiro Ido, Satoshi Ohyabu, Haruhiko Amakusa, Akio Mori