Patents Assigned to Mitsui Mining and Smetting Co.
  • Patent number: 8006583
    Abstract: A fixed support is provided on a base member near a moving lever. A moving support is provided on the moving lever. A coil spring comprises a coil and a pair of arms extending from the coil. The fixed support is wound with the coil. The moving support is held between the two arms of the coil spring and pressed by outward force of the coil spring thereby assuring smooth reverse of a direction of the force.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: August 30, 2011
    Assignee: Mitsui Mining and Smetting Co.
    Inventor: Yuji Yoda