Granted Patent B2

US 12,377,377 · App. 19/030,102 · Granted Aug 5, 2025

Inventors: Steven J. Buth (Madison, WI); Peter J. Davis (Madison, WI); John R. Genova (Madison, WI); Yiwu Yu (Madison, WI); Tom Friederick (Madison, WI); Thomas J. Anoszko (Madison, WI)

Assignee: Research Products Corporation

B01D46/10B01D46/0005B01D46/521F24F8/108

Abstract

Claims (23)

1. A filter element for a heating, ventilation, and/or air conditioning (HVAC) system, the filter element comprising:

a filter media pack including a pleated filter media;

a first support element including:

a connecting member coupled to an end pleat of the pleated filter media on a first side of the connecting member, the connecting member including at least a portion of a curved wall that curves about a central axis that extends substantially parallel to a longitudinal axis of the connecting member; and

a first interface member at a distal end of the curved wall, the first interface member defining a first support ledge that is disposed over a second side of the connecting member that is opposite the first side, the first support ledge extending substantially parallel to the longitudinal axis.

2. The filter element of claim 1 , wherein the curved wall defines an overall lateral end of the first support element.

3. The filter element of claim 1 , wherein the curved wall forms a circular arc, the curved wall configured to facilitate rotational alignment of the first support element relative to a rail guide of an air cleaner housing.

4. The filter element of claim 1 , wherein the curved wall has a continuous curvature.

5. The filter element of claim 1 , wherein the curved wall has an approximately constant radius of curvature so that the curved wall is configured to facilitate alignment between the first support element and a rail system of a filter housing.

6. The filter element of claim 1 , wherein the curved wall defines a cylindrically shaped volume that is sized to nestably receive a complementary receiving structure of a filter housing therein.

7. The filter element of claim 1 , wherein the first support element further comprises a second interface member extending from an opposite end of the connecting member as the first interface member, the second interface member defining a second support ledge that is disposed over the second side of the connecting member, the second support ledge extending parallel to the first support ledge.

8. The filter element of claim 7 , wherein a first dimension between the first support ledge and a first portion of the connecting member, in a direction perpendicular to a reference plane that extends from the first support ledge to the second support ledge, is different from a second dimension between the second support ledge and a second portion of the connecting member in the direction perpendicular to the reference plane.

9. The filter element of claim 8 , wherein the second interface member includes at least a portion of a leg that extends away from the connecting member in a substantially perpendicular orientation relative to the connecting member.

10. The filter element of claim 1 , further comprising a second support element coupled to an opposing end of the filter media pack as the first support element, wherein the filter media pack is reconfigurable between a collapsed position in which the first support element and the second support element are separated by a first distance, and an expanded position in which the first support element and the second support element are separated by a second distance that is greater than the first distance.

11. The filter element of claim 1 , wherein the first support element comprises a second interface member extending from an opposite end of the connecting member as the first interface member, wherein the curved wall is rolled back over the connecting member and toward the second interface member so that an end of the curved wall is disposed between overall lateral ends of the first support element.

12. The filter element of claim 1 , further comprising a second support ledge that extends substantially parallel to the first support ledge, wherein the second support ledge is spaced apart from the connecting member along an axial direction that is substantially perpendicular to the longitudinal axis.

13. A method of making a filter element for a heating, ventilation, and/or air conditioning (HVAC) system, comprising:

coupling a filter media pack including a pleated filter media to a connecting member of a support element by coupling an end pleat of the pleated filter media to a first side of the connecting member, the connecting member including:

at least a portion of a curved wall that curves about a central axis that extends substantially parallel to a longitudinal axis of the connecting member; and

a first interface member at a distal end of the curved wall, the first interface member defining a first support ledge disposed over a second side of the connecting member that is opposite the first side, the first support ledge extending substantially parallel to the longitudinal axis.

14. The method of claim 13 , wherein coupling the filter media pack to the connecting member comprises applying an adhesive material across at least a portion of a surface defined by a media-facing side of the support element, and pressing the end pleat of the filter media pack into the adhesive material to engage the end pleat with the portion of the surface.

15. The filter element of claim 1 , wherein the curved wall defines a curved surface on the first side of the connecting member.

16. The filter element of claim 1 , wherein the connecting member includes a first portion extending away from the curved wall and the first interface member along a lateral direction that is substantially perpendicular to the longitudinal axis, the first portion tangent to the curved wall at a location where the first portion engages the curved wall, and wherein the curved wall curves away from the filter media pack.

Assignments (4)

Continuity (4)

References Cited (56)