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:
Nov. 25, 2008
Filed:
Feb. 10, 2003
Donald Francis Engel, Prior Lake, MN (US);
Dolan Bartels, Cresco, IA (US);
John Hacker, Bloomington, MN (US);
Bruce Crenshaw, Indianapolis, IN (US);
Shirley A. Harold, Savage, MN (US);
Donald Francis Engel, Prior Lake, MN (US);
Dolan Bartels, Cresco, IA (US);
John Hacker, Bloomington, MN (US);
Bruce Crenshaw, Indianapolis, IN (US);
Shirley A. Harold, Savage, MN (US);
Donaldson Company, Inc., Minneapolis, MN (US);
Abstract
A reverse flow air filter arrangement is provided. The arrangement includes a filter element having first and second end caps, the second end cap having a central drainage aperture. A funnel shape on an interior surface of second end cap is used to direct moisture flow to the drainage aperture. The arrangement includes a housing in which the filter element is positioned, operatively, during use. Certain features in the housing facilitate moisture withdrawal from the filter element while also inhibiting interference with sealing between the filter element and the housing.