Patents by Inventor Robert J. Weimer

Robert J. Weimer 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).

  • Oil change interval monitor
    Patent number: 4862393
    Abstract: An oil change interval monitor is provided which senses diesel engine variables such as oil temperature, fuel flow and the volume of oil added to the engine since the last oil change and combines these variables with values determined by known engine parameters to provide a continuously updated indication of the percentage of oil life used by the engine since the last oil change.
    Type: Grant
    Filed: January 12, 1988
    Date of Patent: August 29, 1989
    Assignee: Cummins Engine Company, Inc.
    Inventors: David L. Reid, Robert J. Weimer