Patents by Inventor Johan Grankvist

Johan Grankvist 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).

  • Exhaust valve mechanism for internal combustion engine
    Patent number: 8230831
    Abstract: An exhaust valve mechanism for an internal combustion engine with at least one exhaust valve in every engine cylinder includes a main rocker arm mounted on a rocker arm shaft and a secondary rocker arm arranged on the main rocker arm and mounted on the rocker arm shaft for the activation of an exhaust brake function. A spring device is so arranged as to act between a fixed point on the engine and the secondary rocker arm, in such a way that the latter rocker arm is caused by the spring force to engage with the cam element of the camshaft.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: July 31, 2012
    Assignee: Volvo Lastuaguar AB
    Inventors: Per Persson, Hans Bondeson, Anders Nobelius, Johan Grankvist
  • EXHAUST VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINE
    Publication number: 20070028878
    Abstract: An exhaust valve mechanism for an internal combustion engine with at least one exhaust valve in every engine cylinder includes a main rocker arm mounted on a rocker arm shaft and a secondary rocker arm arranged on the main rocker arm and mounted on the rocker arm shaft for the activation of an exhaust brake function. A spring device is so arranged as to act between a fixed point on the engine and the secondary rocker arm, in such a way that the latter rocker arm is caused by the spring force to engage with the cam element of the camshaft.
    Type: Application
    Filed: August 23, 2006
    Publication date: February 8, 2007
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Per Persson, Hans Bondeson, Anders Nobelius, Johan Grankvist