Patents by Inventor Ingemar Martinsson

Ingemar Martinsson 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).

  • Turbo-charged internal combustion engine
    Patent number: 6250079
    Abstract: A turbo-charged internal combustion engine with a twin-entry exhaust turbine and with a valve arrangement (20) disposed in the turbine housing (11). By means of the valve arrangement (20) the exhaust channels (9, 10) in the turbine housing can be short-circuited. The valve arrangement also functions as a waste-gate valve by virtue of the fact that its valve element (26), in one position, permits exhaust to by-pass the turbine housing through a shunt (18).
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: June 26, 2001
    Assignee: AB Volvo
    Inventors: Lennarth Zander, Ingemar Martinsson, Kent Giselmo
  • Manifold for a turbo-charged internal combustion engine
    Patent number: 6062024
    Abstract: An exhaust manifold and a turbine housing for a turbo-charged five-cylinder engine are cast as a single piece. This arrangement renders unnecessary a flanged connection between a separate exhaust manifold and turbine housing. The one-piece design provides optimum gas paths to obtain a good response.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: May 16, 2000
    Assignee: AB Volvo
    Inventors: Lennarth Zander, Ingemar Martinsson, Jan Erling Rydquist
  • Length adjustment device
    Patent number: 5174171
    Abstract: This invention relates to a length adjustment device for adjusting predetermined maximum or minimum playless distance between two points (A) and (B). Known devices of this kind require visual inspection during the adjustment. The invention avoids the necessity of visual inspection by arranging a protruding means (52) at the end surface of the adjustment screw (5). This protruding device (52) interacts with a slot (23) in one of the longish elements (2,3), which are pivotally cojoined and form the actual length adjustment device (1).
    Type: Grant
    Filed: December 10, 1991
    Date of Patent: December 29, 1992
    Assignee: AB Volvo
    Inventors: Ingemar Martinsson, Jan Karlsson