Filter element

- Donaldson Company, Inc.
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Description

FIG. 1 is a top plan view of a filter element, according to the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D326706 June 2, 1992 Karlsson
D363760 October 31, 1995 Morem et al.
D374476 October 8, 1996 Page et al.
D401306 November 17, 1998 Ward et al.
D402735 December 15, 1998 Kott
3469707 September 1969 Humbert, Jr. et al.
4801383 January 31, 1989 Hoffmann et al.
5082476 January 21, 1992 Kahlbaugh et al.
5443721 August 22, 1995 Kelada et al.
5613992 March 25, 1997 Engel
Other references
  • Exhibit A, Photographs of a prior art filter element (2 pages; 4 photographs).
Patent History
Patent number: D414544
Type: Grant
Filed: Apr 3, 1998
Date of Patent: Sep 28, 1999
Assignee: Donaldson Company, Inc. (Minneapolis, MN)
Inventors: Dennis E. Ward (Richfield, MN), Kevin J. Schrage (Spring Valley, MN), Paul R. Coulonvaux (Brussells), Johan G. Dewit (Hamme-Mille), Jeffrey J. Ivarson (San Rafael, CA)
Primary Examiner: Robin V. Taylor
Law Firm: Merchant & Gould P.C.
Application Number: 0/86,057
Classifications
Current U.S. Class: Filter Or Strainer (2) (D23/209)
International Classification: 2301;