Patents Represented by Law Firm Armstrong, Mikaido, Marmelstein, Kubovcik & Murray
  • Ball screw
    Patent number: 5012687
    Abstract: A ball screw composed of a screw shaft constantly supported on struts at plural parts and a nut movable over an entire length of the shaft by rotations thereof. The nut moves with a high accuracy, and the durability is improved with a simple structure by preventing screw shaft deflections due to elongation thereof.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: May 7, 1991
    Assignee: THK Co., Ltd.
    Inventor: Kaoru Hoshide