Patents by Inventor Karl Stefan Elmvist

Karl Stefan Elmvist 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: 7398836
    Abstract: A pneumatic power tool includes a housing, a motor, a pressure air inlet passage, an exhaust air outlet passage, and an exhaust air outlet flow deflector. The exhaust air outlet flow detector includes an outlet piece with radial as well as axial outlet openings and a valve element with radial as well as axial apertures. The outlet piece and the valve element are rotatable relative to the housing as well as to each other to bring a radial opening of the outlet piece into or out of alignment with a radial aperture of the valve element (21), and at the same time to bring the axial apertures of the valve element out of or into alignment with the openings of the outlet piece, thereby shifting the exhaust outlet flow direction as desired between a radial direction and an axial direction.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: July 15, 2008
    Assignee: Atlas Copco Tools AB
    Inventors: Karl Stefan Elmvist, Mikael John Nordström, Torbjörn Gunnar Walheim