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:
Jan. 28, 2003
Filed:
Dec. 18, 2000
Tadeusz Jaroszczyk, Stoughton, WI (US);
Kent J. Kallsen, Oregon, WI (US);
Jason E. Dorgan, Madison, WI (US);
Z. Gerald Liu, Madison, WI (US);
Stephen L. Fallon, Madison, WI (US);
James A. Debilzen, Brooklyn, WI (US);
Larry T. Gunderson, Madison, WI (US);
Brad Henke, Madison, WI (US);
Jeffrey S. Morgan, Stoughton, WI (US);
Nelson Industries, Inc., Stoughton, WI (US);
Abstract
A filter filters fluid flowing along an axial flow direction and includes a plurality of concentric cylindrical pleated filter elements having a common axis. A plurality of annular radial gaps between filter elements provide additional flow axially through the filter, providing equalized flow and reducing restriction. In further embodiments, a central filter element is concentrically surrounded by a cylindrical pleated outer filter element and provides additional flow axially therethrough.