Patents by Inventor Toyonari Katsube

Toyonari Katsube 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).

  • Golf swing timing device
    Patent number: 4027886
    Abstract: This invention relates to a device for measuring the rhythm and impact timing in golf club swings by noting the golfer's swing position corresponding to the collision of a movable tube with a stopper tube both located on the golf club shaft. Said movable tube is initially held against a magnetic element positioned at the upper grip portion of the tube, said magnetic element capable of being varied in its magnetic attractive, force. The movable tube is moved from said magnetic element due to centrifugal force during the golfer's swing.
    Type: Grant
    Filed: September 19, 1975
    Date of Patent: June 7, 1977
    Inventor: Toyonari Katsube