Patents by Inventor Douglas R. Matthews

Douglas R. Matthews 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: 5364325
    Abstract: The present invention relates to an exercise/physical therapy device incorporating the use of a leveraged weight compounding system cell. The invention includes a cell tube enclosing a plurality of weighted spheres within a Federal Drug Administration approved silicon based dimethyl siloxane polymer. The FDA approved silicon based dimethyl siloxane polymer liquid functions to provide resistance in order to decrease the speed of motion for the plurality of weighted spheres within the cell tube. The plurality of weighted spheres freely move within the cell tube upon the elevation of one of the ends of the invention by an individual during exercise or therapy. The invention provides an individual with an infinite variety of available exercises for strengthening muscles. The invention also permits an individual to select from an infinite variety of leveraged weights, dependent upon the position of grasping of the invention by an individual.
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: November 15, 1994
    Inventor: Douglas R. Matthews