Patents by Inventor Toshiyuki Mizytani

Toshiyuki Mizytani 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).

  • Shaft member for fluid lubrication bearing apparatuses and a method for producing the same
    Patent number: 8678653
    Abstract: A low-cost shaft member for hydrodynamic bearing apparatuses restores the pressure balance in a thrust bearing gap formed on both axial sides of the flange portion in an early stage. A shaft material integrally having a shaft portion and a flange portion with a through-hole between both end faces of the flange portion is formed in a common forging step. As a result, the through-hole is formed to open to an inner diameter side of the bearing gaps avoiding the thrust bearing gaps formed on both end faces of the flange portion of the shaft member as a finished product.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: March 25, 2014
    Assignees: NTN Corporation, Fukui Byora Co., Ltd.
    Inventors: Nobuyoshi Yamashita, Natsuhiko Mori, Toshiyuki Mizytani, Takeshi Shimazaki, Koji Yamagata