Donaldson Comapny, Inc.

Mark G Soderlund

Brent A Gulsvig

John F Connelly

Jeff J Theisen

Daniel Roebbeke

A liquid filter apparatus includes a housing cup, end plate enclosing an end of the housing cup, a filter cartridge positioned within housing cup, and a gasket positioned between the filter cartridge and the end plate. The end plate has a gasket centering projection thereon. The gasket includes a centering depression positioned in engagement with the gasket centering projection of the end plate. The gasket may include a gasket for a lube filter, a gasket for a fuel filter, or a gasket for a coolant filter. A method for assembling a filter assembly includes steps of selecting a gasket from amongst a plurality of different shaped gaskets, and selecting a filter element from amongst a plurality of different filter elements. The gasket selected and the filter elements selected will depend upon the final intended application.

Spin-on coolant filter

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.

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Lakeville, MN, United States of America

Mark G Soderlund