Patents by Inventor Thomas J. Pfaff

Thomas J. Pfaff 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: 11213717
    Abstract: A power rowing machine that combines the seat of a rowing machine with a weight arm for resistance training. The power rowing machine avoids the flywheel of a conventional rowing machine and instead uses a weight arm. The weight arm serves two purposes. First, weight can be added to the arm for progressive resistance training. Second, the pivoting action varies the resistance through the movement. As a slow controlled resistance exercise the back and the arms of the rowing stroke cannot move the same resistance as the legs. Similarly, a user at the beginning of the rowing motion, with the legs compressed, cannot move as much resistance as with knees at a 90-degree angle.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: January 4, 2022
    Inventor: Thomas J. Pfaff
  • Publication number: 20200269085
    Abstract: A power rowing machine that combines the seat of a rowing machine with a weight arm for resistance training. The power rowing machine avoids the flywheel of a conventional rowing machine and instead uses a weight arm. The weight arm serves two purposes. First, weight can be added to the arm for progressive resistance training. Second, the pivoting action varies the resistance through the movement. As a slow controlled resistance exercise the back and then arms of the rowing stroke cannot move the same resistance as the legs. Similarly, a user at the beginning of the rowing motion, with the legs compressed, cannot move as much resistance as with knees at a 90-degree angle.
    Type: Application
    Filed: February 6, 2020
    Publication date: August 27, 2020
    Inventor: Thomas J. Pfaff