Patents by Inventor Lars-Erik Lundberg

Lars-Erik Lundberg 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).

  • Device for indicating the oil level in a combustion engine crankcase
    Patent number: 4023137
    Abstract: A device for indicating the oil level of an internal combustion engine crankcase comprises a crankcase oil level sensor electrically connected to a change-over switch provided in the electrical connection between the engine fuel tank level sensor and its fuel indicator, thereby allowing the same in indicator to be used for reading fuel and oil level selectively. The change-over switch preferably forms part of the ignition switch so that oil level reading is prevented when the engine is running.
    Type: Grant
    Filed: July 28, 1975
    Date of Patent: May 10, 1977
    Assignee: AB Volvo Penta
    Inventors: Ake Gunnar Olsbo, Dag Anders Windt, Lars-Erik Lundberg