Patents by Inventor Timothy F. Lindgren

Timothy F. Lindgren 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).

  • Internal combustion engine ignition system
    Patent number: 4433280
    Abstract: An internal combustion engine ignition system comprising the combination of an electronic data processor unit that is adapted to calculate an ignition spark event engine crankshaft angle, an associated electronic control unit, and a source of alternating current timing signals. The electronic control unit is responsive to the alternating current timing signals to produce an engine crankshaft position reference signal that is supplied as an input engine crankshaft position reference signal to the data processor unit and also is capable of effecting ignition spark in response to the alternating current timing signals during periods of engine crank and during periods of data processor unit malfunction.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: February 21, 1984
    Assignee: General Motors Corporation
    Inventor: Timothy F. Lindgren
  • Internal combustion engine ignition system
    Patent number: 4317437
    Abstract: An internal combustion engine ignition system comprising the combination of an electronic data processor unit that is adapted to calculate an ignition spark event engine crankshaft angle, an associated electronic control unit, and a source of alternating current timing signals. The electronic control unit is responsive to the alternating current timing signals to produce an engine crankshaft position reference signal that is supplied as an input engine crankshaft position reference signal to the data processor unit and also is capable of effecting ignition spark in response to the alternating current timing signals during periods of engine crank and during periods of data processor unit malfunction.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: March 2, 1982
    Assignee: General Motors Corporation
    Inventor: Timothy F. Lindgren