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:
Jul. 07, 2009
Filed:
Oct. 07, 2003
David B. Harder, Burnsville, MN (US);
Philip Edward Johnson, Apple Valley, MN (US);
Eivind Stenersen, River Falls, WI (US);
Curt A. Rausch, Bloomington, MN (US);
John R. Hacker, Edina, MN (US);
David B. Harder, Burnsville, MN (US);
Philip Edward Johnson, Apple Valley, MN (US);
Eivind Stenersen, River Falls, WI (US);
Curt A. Rausch, Bloomington, MN (US);
John R. Hacker, Edina, MN (US);
Donaldson Company, Inc., Minneapolis, MN (US);
Abstract
A fluid filter arrangement has a housing, a filter cartridge oriented within the housing, and a projection arrangement. The projection arrangement is oriented to space the filter cartridge from a wall of the housing in order to provide a fluid flow path between the filter cartridge and the housing wall. In some arrangements, the projection arrangement is part of an end cap. Embodiments of the projections include axial extensions, radial extensions, and angled extensions including both radial and axial components. Systems of use, methods of filtering, methods of making, and methods of servicing include arrangements of these types.