Patents by Inventor Mark G. Soderlund

Mark G. Soderlund 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).

  • Fuel filter with sediment drain valve and level indicator
    Patent number: 6083381
    Abstract: A filter arrangement for filtering fluid comprises a housing and a valve arrangement. The housing includes an inlet, an outlet, and a draining aperture. The valve arrangement is constructed and arranged to move between a closed position and an open position without the use of threads. The closed position prevents evacuation of fluid from the housing through the draining aperture, and the open position permits evacuation of fluid from the housing through the draining aperture. One valve arrangement may include a pair of ports and a pair of air vents. The valve is actuated by aligning the ports and air vents on a sliding sealing surface. An indicator arrangement including a float and a clear window is provided to give the user a visual indication of the level of water within the filter. Methods for using the constructions herein are provided.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: July 4, 2000
    Assignee: Donaldson Company, Inc.
    Inventors: John F. Connelly, Brent A. Gulsvig, Mark G. Soderlund, Jeff J. Theisen
  • Fluid filter arrangement including valve arrangement, fluid level indicator, and methods thereof
    Patent number: 6012485
    Abstract: A filter arrangement for filtering fluid comprises a housing and a valve arrangement. The housing includes an inlet, an outlet, and a draining aperture. The valve arrangement is constructed and arranged to move between a closed position and an open position without the use of threads. The closed position prevents evacuation of fluid from the housing through the draining aperture, and the open position permits evacuation of fluid from the housing through the draining aperture. One valve arrangement may include a pair of ports and a pair of air vents. The valve is actuated by aligning the ports and air vents on a sliding sealing surface. An indicator arrangement including a float and a clear window is provided to give the user a visual indication of the level of water within the filter. Methods for using the constructions herein are provided.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: January 11, 2000
    Assignee: Donaldson Company, Inc.
    Inventors: John F. Connelly, Brent A. Gulsvig, Mark G. Soderlund, Jeff J. Theisen