Fleetguard, Inc.

Nelson Industries, Inc.

Paul B Rear

Mark V Holzmann

Michael R Furseth

Michael J Connor

Donald E Stiemke

Jon S Wake

Michael J Frame

James A Bass

A filter is provided by a panel filter element having a perimeter gasket having sealing planes axially between inlet and outlet axial ends of the panel filter element and having a merge point with the panel filter element axially between the sealing planes.

Panel filter with gasket seal

A filter ( ) has a housing ( ) extending along an axis ( ) between first and second axial ends ( and ), and has a closed loop primary filter element ( ) extending axially in the housing, and a closed loop safety filter element ( ) in the hollow interior ( ) of the primary filter element. A detent member ( ) engages and retains the end cap ( ) of the safety filter element independently of the primary filter element to retain the safety filter element in housing upon removal of the primary filter element from the housing.

Filter with retained safety element

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McFarland, WI, United States of America

Paul B Rear