Patents by Inventor Hisashi Kubokawa

Hisashi Kubokawa 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).

  • Gear shaper cutting method and apparatus
    Patent number: 6065910
    Abstract: A gear shaper effects a gear shaper cutting method by dry cutting, using a pinion cutter made of high-speed tool steel at a high efficiency. The pinion cutter of the gear shaper is coated, at least on the flank thereof, with at least one layer of film having a composition comprising: (Ti.sub.(1-x) Al.sub.x)(N.sub.y C.sub.(1-y) ), wherein 0.2.ltoreq.x.ltoreq.0.9 and 0.2.ltoreq.y.ltoreq.1.0. Gear shaper cutting is performed at a cutting speed of 300 m/min or less.
    Type: Grant
    Filed: July 7, 1998
    Date of Patent: May 23, 2000
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tsuneo Egawa, Masakatsu Fujita, Hisashi Kubokawa, Akihide Kakutani, Yoshiharu Tonohara