Back to results
US 6,206,205 B1Granted
Pleated filter and support tube therefor
AssigneeDonaldson Company, Inc.
InventorsReynold F. Durre, Laurie A. Buchberger, Greg Brace
Life of this patent
Estimating the term…
Abstract
A filter support includes a tubular construction that has flow apertures, a top edge, an opposite bottom edge, and first and second side edges extending between the top and bottom edges. The first and second side edges oppose each other to form a seam region having a non-axial seam center line extending between the top edge and the bottom edge.
Claims12
A filter construction comprising:
- (a) a region of pleated media;
- and
- (b) a tubular construction supporting the region of pleated media;
- the tubular construction having flow apertures, a top edge, an opposite bottom edge, and first and second side edges extending between the top and bottom edges;
- (i) the first and second side edges opposing each other to form a non-welded seam region having a seam center line extending between the top edge and the bottom edge;
- (A) the seam center line being angled from the top edge to the bottom edge at an angle between 0.5 degrees and 15 degrees from a line parallel to a central longitudinal axis of the tubular construction.
3 more elements
Dependencies are inferred from the claim text.