Patents by Inventor Tetsuya Higashihara

Tetsuya Higashihara 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).

  • Spindle motor, information recording and reproducing apparatus that makes use of same, and method for manufacturing spindle motor
    Patent number: 7880354
    Abstract: A spindle motor, comprising a base having a cylindrical drawn portion formed by plastic working, a sleeve that is inserted in the drawn portion, a shaft that is inserted in a state of being rotatable relative to the sleeve, and a lubricant that fills the gap between the sleeve and the shaft, in which the sleeve is affixed with an adhesive agent to the drawn portion inner periphery, wherein there are adhesive reservoirs around the inner periphery of the drawn portion. These adhesive reservoirs are formed during a series of plastic working steps in which the cylindrical drawn portion is formed.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: February 1, 2011
    Assignee: Panasonic Corporation
    Inventors: Tetsuya Higashihara, Makoto Hasegawa, Kazuo Okubo
  • SPINDLE MOTOR, INFORMATION RECORDING AND REPRODUCING APPARATUS THAT MAKES USE OF SAME, AND METHOD FOR MANUFACTURING SPINDLE MOTOR
    Publication number: 20090115275
    Abstract: A spindle motor, comprising a base having a cylindrical drawn portion formed by plastic working, a sleeve that is inserted in the drawn portion, a shaft that is inserted in a state of being rotatable relative to the sleeve, and a lubricant that fills the gap between the sleeve and the shaft, in which the sleeve is affixed with an adhesive agent to the drawn portion inner periphery, wherein there are adhesive reservoirs around the inner periphery of the drawn portion. These adhesive reservoirs are formed during a series of plastic working steps in which the cylindrical drawn portion is formed.
    Type: Application
    Filed: October 22, 2008
    Publication date: May 7, 2009
    Inventors: Tetsuya Higashihara, Makoto Hasegawa, Kazuo Okubo