Radial Pleat Filter

FIG. 1 is a top plan view of a first embodiment of a radial pleat filter; FIG. 2 is a bottom view thereof; FIG. 3 is a front elevational view thereof; FIG. 4 is a rear elevational view thereof; FIG. 5 is a left side elevational view thereof; FIG. 6 is a right side elevational view thereof; FIG. 7 is an isometric view thereof; FIG. 8 is a cross sectional view thereof taken along line 8 - 8 of FIG. 1 ; FIG. 9 is an isometric view thereof illustrating the radial pleat filter of FIG. 1 assembled with a plurality of like radial pleat filters in a stacked arrangement; FIG. 10 is a front view of FIG. 9 , the rear, left and right sides being identical thereto; FIG. 11 is an isometric view of a filter element incorporating the radial pleat filter of FIG. 1 ; FIG. 12 is a top plan view of a second embodiment of a radial pleat filter; FIG. 13 is a bottom view thereof; FIG. 14 is a front elevational view thereof; FIG. 15 is a rear elevational view thereof; FIG. 16 is a left side elevational view thereof; FIG. 17 is a right side elevational view thereof; FIG. 18 is an isometric view thereof; FIG. 19 is a cross sectional view thereof taken along line 19 - 19 of FIG. 12 ; FIG. 20 is an isometric view thereof illustrating the radial pleat filter assembled with a plurality of like radial pleat filters in a stacked arrangement; FIG. 21 is a right side view of FIG. 20 ; FIG. 22 is an isometric view of a filter element incorporating the radial pleat filter of FIG. 12 ; FIG. 23 is a top plan view of a third embodiment of a radial pleat filter; FIG. 24 is a bottom view thereof; FIG. 25 is a front elevational view thereof; FIG. 26 is a rear elevational view thereof; FIG. 27 is a left side elevational view thereof; FIG. 28 is a right side elevational view thereof; FIG. 29 is an isometric view thereof; FIG. 30 is a cross sectional view thereof taken along line 30 - 30 of FIG. 23 ; FIG. 31 is an isometric view thereof illustrating the radial pleat filter assembled with a plurality of like radial pleat filters in a stacked arrangement; FIG. 32 is a front view of FIG. 31 , the rear, left and right sides being identical; FIG. 33 is an isometric view of a filter element incorporating the radial pleat filter of FIG. 23 ; FIG. 34 is a top plan view of a fourth embodiment of a radial pleat filter; FIG. 35 is a bottom view thereof; FIG. 36 is a front elevational view thereof; FIG. 37 is a rear elevational view thereof; FIG. 38 is a left side elevational view thereof; FIG. 39 is a right side elevational view thereof; FIG. 40 is an isometric view thereof; FIG. 41 is a section view thereof taken along line 41 - 41 of FIG. 34 ; FIG. 42 is an isometric view thereof illustrating the radial pleat filter assembled with a plurality of like radial pleat filters in a stacked arrangement; FIG. 43 is a right side view of FIG. 42 ; and, FIG. 44 is an isometric view of a filter element incorporating the radial pleat filter of FIG. 34 . The dash-dash-dash lines are for the purpose of illustrating environmental structure and form no part of the claimed design. The drawings are shown with symbolic breaks. The appearance of any portion of the article between the break lines forms no part of the claimed design.