Pleat spacer for air filter
Latest Donaldson Company, Inc. Patents:
Description
FIG. 1 is a perspective view of a pleat spacer for air filter;
FIG. 2 is a right side elevational view of FIG. 1, the left side elevational view being a mirror image thereof with an identical appearance;
FIG. 3 is a front side elevational view of FIG. 1, the back side elevational view being a mirror image thereof with an identical appearance;
FIG. 4 is a bottom plan view of FIG. 1; and,
FIG. 5 is a top plan view of FIG. 1.
Claims
The ornamental design for a pleat spacer for air filter, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
Other references
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3138443 | June 1964 | Engle et al. |
3606739 | September 1971 | Peterson |
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3869392 | March 1975 | Wolf |
4133661 | January 9, 1979 | Strnad |
4488966 | December 18, 1984 | Schaeffer |
4547950 | October 22, 1985 | Thompson |
4617122 | October 14, 1986 | Kruse et al. |
4701196 | October 20, 1987 | Delany |
4963171 | October 16, 1990 | Osendorf |
5273563 | December 28, 1993 | Pasch et al. |
5273564 | December 28, 1993 | Hill |
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- Declaration of Richard J. Osendorf with Exhibits A-C.
Patent History
Patent number: D468007
Type: Grant
Filed: Nov 12, 1997
Date of Patent: Dec 31, 2002
Assignee: Donaldson Company, Inc. (Minneapolis, MN)
Inventors: Richard J. Osendorf (West St. Paul, MN), Timothy John Smith (Minneapolis, MN)
Primary Examiner: Lisa Lichtenstein
Attorney, Agent or Law Firm: Merchant & Gould P.C.
Application Number: 29/134,001
Type: Grant
Filed: Nov 12, 1997
Date of Patent: Dec 31, 2002
Assignee: Donaldson Company, Inc. (Minneapolis, MN)
Inventors: Richard J. Osendorf (West St. Paul, MN), Timothy John Smith (Minneapolis, MN)
Primary Examiner: Lisa Lichtenstein
Attorney, Agent or Law Firm: Merchant & Gould P.C.
Application Number: 29/134,001
Classifications