Patents by Inventor Ellsworth J. Hagen

Ellsworth J. Hagen 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).

  • Combined air box, coolant reservoir and oil tank for snowmobiles
    Patent number: 6247442
    Abstract: A combined air box, coolant reservoir and oil tank for a snowmobile. The combination unit comprises a molded housing having a set of exterior walls defining an interior cavity, and at least two interior walls dividing the interior cavity into at least three chambers, namely an air box chamber, a coolant reservoir chamber, and an oil tank chamber. Each of these three chambers thus is defined by at least a portion of the exterior walls and at least a portion of at least one of the interior walls.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: June 19, 2001
    Assignee: Polaris Industries Inc.
    Inventors: Michael A. Bedard, Ellsworth J. Hagen