Patents by Inventor Kentarow Nishimura

Kentarow Nishimura 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).

  • Roller screw and roller screw roller arranging method
    Patent number: 6481305
    Abstract: In a roller screw, a plurality of rollers 16 interposed between a nut member 14 and a screw shaft 12 are composed of a forward-motion load roller group 17, the rollers 16 of which are arranged in such a manner that the center lines thereof are set at a given angle &agr; with respect to the center line of the screw shaft 12, and backward-motion load roller group 18, the rollers 16 of which are arranged in such a manner that the center lines thereof are set at an angle &bgr;, which is different from the angle &agr;, with respect to the center line of the screw shaft 12; and, the forward-motion load roller group 17 and backward-motion load roller group 18 are disposed such that they are separated from each other.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: November 19, 2002
    Assignee: THK Co., Ltd.
    Inventors: Kentarow Nishimura, Shino Kimura
  • Roller screw and roller screw roller arranging method
    Publication number: 20010017062
    Abstract: In a roller screw, a plurality of rollers 16 interposed between a nut member 14 and a screw shaft 12 are composed of a forward-motion load roller group 17, the rollers 16 of which are arranged in such a manner that the center lines thereof are set at a given angle &agr; with respect to the center line of the screw shaft 12, and a backward-motion load roller group 18, the rollers 16 of which are arranged in such a manner that the center lines thereof are set at an angle &bgr;, which is different from the angle &agr;, with respect to the center line of the screw shaft 12; and, the forward-motion load roller group 17 and backward-motion load roller group 18 are disposed such that they are separated from each other.
    Type: Application
    Filed: February 27, 2001
    Publication date: August 30, 2001
    Applicant: THK CO., LTD.
    Inventors: Kentarow Nishimura, Shino Kimura