The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 2002
Filed:
May. 03, 2000
Barry M. Verdegan, Stoughton, WI (US);
Brian W. Schwandt, Fort Atkinson, WI (US);
Daniel R. Cady, Madison, WI (US);
Nelson Industries, Inc., Stoughton, WI (US);
Abstract
A filter housing ( ) has a first inlet ( ) for receiving a first fluid such as oil from a machine such as an internal combustion engine ( ), a first outlet ( ) returning the first fluid to the machine, a second inlet ( ) selectively receiving a second fluid from a source of cleaning fluid ( ), and a second outlet ( ) exhausting the second fluid. The filter housing has a first flow path therethrough from the first inlet through a filter element ( ) in one direction to the first outlet, and a second flow path therethrough from the second inlet then through the filter element in the opposite direction then to the second outlet. The first and second inlets and the first and second outlets are all provided at the same axial end of the housing, for modularity. First and second common flow channels ( and ) in the housing each carry the first and second fluids in opposite directions. First and second valves ( and ) in the housing enable switching between filtration and cleaning modes.