Patents by Inventor Mitsuhiro Ishiwata

Mitsuhiro Ishiwata 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).

  • Patent number: 7506407
    Abstract: A torque adjusting hinge capable of easily and precisely controlling its frictional torque, being totally downsized and free from wear in its pivot pin. The hinge employs a cylindrical drive element is between the pivot pin and a sleeve-like bearing of a stationary wing and a sleeve-like bearing of a movable wing; a frictional element is disposed between a sleeve-like bearing of the stationary wing and a sleeve-like bearing of the movable wing; a swash plate-like surface formed in the cylindrical drive element is provided and abuts against a swash plate-like surface formed in the cylindrical friction element; and a nut threadably engaged with a threaded pin portion of the pivot pin when tightened, causes axial movement of the cylindrical drive element in a longitudinal direction of the pivot pin, whereby a controlled friction torque is produced between an outer peripheral surface of the cylindrical friction element and an inner peripheral surface of the sleeve-like bearing.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: March 24, 2009
    Assignee: Takigen Manufacturing Co. Ltd.
    Inventor: Mitsuhiro Ishiwata
  • Publication number: 20060225248
    Abstract: A torque adjusting hinge capable of easily and precisely controlling its frictional torque, being totally downsized and free from wear in its pivot pin. The hinge employs a cylindrical drive element is between the pivot pin and a sleeve-like bearing of a stationary wing and a sleeve-like bearing of a movable wing; a frictional element is disposed between a sleeve-like bearing of the stationary wing and a sleeve-like bearing of the movable wing; a swash plate-like surface formed in the cylindrical drive element is provided and abuts against a swash plate-like surface formed in the cylindrical friction element; and a nut threadably engaged with a threaded pin portion of the pivot pin when tightened, causes axial movement of the cylindrical drive element in a longitudinal direction of the pivot pin, whereby a controlled friction torque is produced between an outer peripheral surface of the cylindrical friction element and an inner peripheral surface of the sleeve-like bearing.
    Type: Application
    Filed: March 16, 2006
    Publication date: October 12, 2006
    Inventor: Mitsuhiro Ishiwata