Patents by Inventor Jon A. Ruopsa

Jon A. Ruopsa 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).

  • Particle collection system with spoiler
    Patent number: 4811527
    Abstract: Improved abrading apparatus. The apparatus includes a rotating abrasive stone and, to minimize the quantity of abraded particles which escape from the apparatus into the surrounding environment, utilizes a closed circuit air flow and utilizes a protective air curtain between the rotating abrasive stone and a user.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: March 14, 1989
    Inventor: Jon A. Ruopsa
  • Particle collection system
    Patent number: 4697390
    Abstract: Improved abrading apparatus. The apparatus includes a rotating abrasive stone and, to minimize the quantity of abraded particles which escape from the apparatus into the surrounding environment, utilizes a closed circuit air flow and utilizes a protective air curtain between the rotating abrasive stone and a user.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: October 6, 1987
    Inventor: Jon A. Ruopsa