Patents Represented by Attorney Sughrue PLLC

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  • Positioning apparatus
    Patent number: 7152331
    Abstract: A positioning apparatus has a stage, guide elements provided on both ends of the stage, and drive elements which are provided at one of both ends of the stage and move the stage along the guide elements. Like linear guide rails 61A, 61B and linear guide bearings 23A, 23B, two guide elements are provided in an area where a ball screw shaft 52 serving as a drive element is placed. One guide element is provided in an area where a non-drive element is provided.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: December 26, 2006
    Assignee: NSK Ltd.
    Inventors: Tsuyoshi Nakamura, Nobuhito Saji, Yoshifumi Sugita, Masato Taniguchi