Filter cartridge media with a variable winding bead

Abstract

A filter cartridge includes a coiled filter media having a trailing edge, a first elongate edge extending from a first end of the trailing edge, and a second elongate edge extending from a second end of the trailing edge. A seal bead is disposed on the filter media and extends along at least a portion of the second elongate edge. A winding bead is disposed on the filter media and includes a first portion extending longitudinally along the first elongate edge toward the trailing edge and a second portion extending from the first portion towards the second elongate edge. At least a portion of each of the seal bead and the second portion are disposed within a sealing region portion of the filter media.

Description

[0001] FILTER CARTRIDGE MEDIA WITH A VARIABLE WINDING BEAD

[0002] Cross Reference to Related Applications

[0003] This application claims the benefit of U.S. 63 / 536,313, filed September 1, 2023, the disclosure of which is incorporated by reference herein in its entirety.

[0004] Field of the Technology

[0005] The technology disclosed herein generally relates to filters. More particularly, the technology disclosed herein relates to filter cartridge media.

[0006] Background

[0007] Fluid streams, such as air and liquid, carry contaminant material therein. In many instances, it is desired to filter some or all of the contaminant material from the fluid stream. For example, air streams to engines for motorized vehicles or for power generation equipment, air and gas streams to gas turbine systems, air and gas streams to various combustion furnaces, and air and gas streams to heat exchangers (e.g., heating and air conditioning) carry particulate contaminants that should often be filtered. Liquid streams in engine lube systems, hydraulic systems, coolant systems, and fuel systems can also carry contaminants that should be filtered. It is preferred for such systems that selected contaminant material be removed from (or have its level reduced in) the fluid. A variety of fluid filters (gas or liquid filters) have been developed for contaminant reduction. In general, however, continued improvements are sought.

[0008] Summary

[0009] One illustrative filter cartridge includes a coiled filter media including a trailing edge, a first elongate edge extending from a first end of the trailing edge, and a second elongate edge extending from a second end of the trailing edge. A seal bead is disposed on the filter media and extends along at least a portion of the second elongate edge. A winding bead is disposed on the filter media and includes a first portion extending longitudinally along the first elongate edge toward the trailing edge and a second portion extending from the first portion towards the second elongate edge. At least a portion of each of the seal bead and the second portion are disposed within a sealing region portion of the filter media.

[0010] An illustrative filter cartridge includes a coiled filter media extending along a longitudinal axis and includes a trailing edge, a first elongate edge extending from a first end of the trailing edge, and a second elongate edge extending from a second end of the trailing edge. A seal bead is disposed on the filter media and extends along at least a portion of the second elongate edge. A winding bead is disposed on the filter media. The winding bead includes a first portion extending longitudinally along the first elongate edge and a second portion having a first end disposed proximate the first portion and a second end disposed within a sealing region portion of the filter media. A distance between the seal bead and the winding bead, measured transverse to the longitudinal axis, decreases for a transition region extending from the first portion of the winding bead to the sealing region.

[0011] An illustrative method includes providing a filter media comprising a trailing edge, a first elongate edge extending from a first end of the trailing edge, and a second elongate edge extending from a second end of the trailing edge. A seal bead is disposed on the filter media along at least a portion of the second elongate edge. A winding bead is disposed on the filter media simultaneously in a longitudinal direction towards the trailing edge and a direction away from the first elongate edge towards the second elongate edge.

[0012] The above summary is not intended to describe each embodiment or every implementation. Rather, a more complete understanding of illustrative embodiments will become apparent and appreciated by reference to the following detailed description and claims in view of the accompanying figures of the drawings.

[0013] Brief Description of the Drawings

[0014] FIG. l is a perspective view of an example filter media assembly consistent with the technology disclosed herein.

[0015] FIG. 2A is a perspective view of another example filter media configuration consistent with the technology disclosed herein.

[0016] FIG. 2B is a detail view of A’ of FIG. 2A.

[0017] FIG. 3 is a side cut-away view of another example filter media configuration consistent with the technology disclosed herein. FIG. 4A is example filter media consistent with some embodiments.

[0018] FIG. 4B is another example filter media consistent with some embodiments.

[0019] FIG. 4C is yet another example filter media consistent with some embodiments.

[0020] FIGS. 5A and 5B show a portion of filter media located at the tail end of the coil with a tail end seal disposed on the filter media in accordance with some embodiments.

[0021] FIGS. 6A-6D show an example of filter media having a variable winding bead disposed thereon in accordance with embodiments described herein.

[0022] FIGS. 7A and 7B illustrate another view of a variable winding bead in accordance with embodiments described herein.

[0023] FIGS. 8A - 8D illustrate examples in which the winding bead and the seal bead do not intersect within the sealing region in accordance with embodiments described herein.

[0024] FIG. 9 shows a process for manufacturing filter media having a variable winding bead in accordance with embodiments described herein.

[0025] The present technology may be more completely understood and appreciated in consideration of the following detailed description of various embodiments in connection with the accompanying drawings.

[0026] The figures are rendered primarily for clarity and, as a result, are not necessarily drawn to scale. Moreover, various structure / components, including but not limited to fasteners, sealing components, and the like, may be shown diagrammatically or removed from some or all of the views to better illustrate aspects of the depicted embodiments, or where inclusion of such structure / components is not necessary to an understanding of the various exemplary embodiments described herein. The lack of illustration / description of such structure / components in a particular figure is, however, not to be interpreted as limiting the scope of the various embodiments in any way.

[0027] Detailed Description

[0028] FIG. 1 depicts one example filter assembly in accordance with embodiments disclosed herein. The filter assembly 1 is constructed of filter media 10 defining a first flow face 20, a second flow face 30, and a plurality of flutes 40 extending from the first flow face 20 to the second flow face 30. In the current example, the first flow face is defined on a first end 12 of the filter assembly 1 and the second flow face 30 is defined on a second, opposite end 14 of the filter assembly 1. A “flow face” as defined herein is the side of the filter assembly through which fluid is configured to enter or exit the filter assembly.

[0029] The filter media 10 is a plurality of sheets of filter media, specifically a first sheet of filter media 50 and a second sheet of filter media 60. The second sheet of filter media 60 is adjacent to the first sheet of filter media 50. The first sheet of filter media 50 and the second sheet of filter media 60 mutually define the plurality of flutes 40. The filter media 10 defines a coiled configuration about a z-axis. Accordingly, each of the first sheet of filter media 50 and the second sheet of filter media 60 defines a coiled configuration around the z-axis. As such, the plurality of flutes 40 are also in a coiled configuration about the z-axis. A leading edge 18 is located at the center of the coil and the trailing edge 19 is located at the end of the coil. The trailing edge may be referred to herein as the tail-end. The coiled configuration may define one or more of a circular shape, an obround shape, D- shaped, and a shape having rounded squares, for example.

[0030] The first sheet of filter media 50 and the second sheet of filter media 60 are generally elongate, which enables the first sheet of filter media 50 and the second sheet of filter media 60 to be coiled about the z-axis to form a filter assembly. In this example, the first sheet of filter media 50 and the second sheet of filter media 60 are continuous, meaning that the first sheet of filter media 50 and the second sheet of filter media 60 are portions of a single cohesive sheet of filter media. The first sheet of filter media 50 and the second sheet of filter media 60 are separated by a fold 70. The fold 70 defines the second flow face 30 of the filter assembly. The first sheet of filter media 50 defines a first edge 52 and the second sheet of filter media 60 defines a second edge 62. The first edge 52 and the second edge 62 mutually define the first flow face 20 of the filter assembly 1. An “edge” of a media sheet is defined herein as the outer limit of the media and is distinguished from the fold 70.

[0031] In examples consistent with the current embodiment, both the first sheet of filter media 50 and the second sheet of filter media 60 are each fluted. The term “fluted” as used herein is synonymous with the term “corrugated,” which refers to a series of alternating elongate ridges / peaks, and elongate grooves / valleys. The term “flutes” is used herein to refer to the elongate channels mutually defined by adjacent portions of media. In the current embodiment the plurality of flutes are parallel, but in some other embodiments the plurality of flutes are not parallel.

[0032] The filter assembly 1 is generally constructed to define a fluid pathway 16 between the first flow face 20 and the second flow face 30 through the filter media 10 such that the fluid is filtered by the filter media 10. In particular, the plurality of flutes 40 defines the fluid pathway 16 either (1) into the filter assembly 1 then to the filter media 10 (“inlet flutes”), or (2) from the filter media 10 out of the filter assembly 1 (“outlet flutes”). While each of the figures provided in the present application depict fluid pathways in a particular direction through the depicted filter assemblies for clarity, it will be understood that the fluid pathways can also be in the reverse direction in various examples.

[0033] Each of the plurality of flutes 40 defines a flute opening 42 and a flute closure 70. The flute opening 42 forms an end-most portion of the fluid pathway 16 along the flute, to accommodate fluid flow into or out of the filter assembly 1. The flute closure 70 obstructs fluid flow along the flute, thereby defining a portion of the fluid pathway 16 through the filter media 10. In the current example, a plurality of inlet flutes defines the flute opening 42 at the first flow face 20 and a flute closure 70 is defined towards the second flow face 30. In some embodiments, including the one depicted, the flute closure 70 is adjacent to the second flow face 30. More particularly, the flute closure 70 can abut the second flow face 30. The flute closure 70 can have a variety of different configurations, but in the current embodiment, the flute closure 70 is defined by the fold 70.

[0034] In the current embodiment, the volume defined between an outer surface 56 of the first sheet of filter media and the outer surface 66 of the second sheet of filter media defines an outlet pathway of the fluid pathway 16 that is not necessarily characterized as being defined by a plurality of flutes. The phrase “outer surface” is defined as the surfaces of the first sheet of filter media and the second sheet of filter media that are facing away from each other if the filter media 10 were arranged as a flat sheet (when uncoiled. The outlet pathway extends from a winding bead 72 to an opening defined at the second end 14 of the filter assembly 1 between the coiled fold 70. It is to be understood that the winding bead 72 may be referred to herein as a winding bead. The winding bead 72 can be disposed within the coil and outside of the plurality of flutes 40 such that fluids passing through the first flow face 20 and second flow face 30 of the filter assembly 1 must first pass through the filter media 10. It is to be understood that the winding bead may be referred to as an obstruction herein. Additional obstructions can also be disposed in any other gaps in the filter media to prevent fluid flow there-through, such as around the outer perimeter of the filter assembly 1 and in a central opening of the filter assembly 1. An obstruction can be formed through depositing an adhesive, such as a glue bead at the relevant location.

[0035] In various embodiments, at least one of the first flow face 20 and the second flow face 30 is non-planar. In various embodiments, at least one of the first flow face 20 and the second flow face 30 is substantially planar. A “planar” flow face as defined herein means that the surface(s) of the media defining the flow face form an imaginary plane within a 2mm margin of error.

[0036] In some examples consistent with this particular embodiment, the first flow face 20 is non-planar and the second flow face 30 is planar. In some other examples consistent with this particular embodiment, the first flow face 20 is non-planar and the second flow face 30 non-planar. Here the first flow face 20 defines a spiral about the Z-axis that extends in the axial direction. While the second flow face 30 is obstructed from view in the current illustration, it will be appreciated that the second flow face 30 can be non-planar or planar where “non-planar” means that the flute opening does not define a plane within a 2mm margin of error.

[0037] In examples consistent with the current embodiment, the winding bead 72 is disposed adjacent to the second edge 62 of the second sheet of filter media 60 along the length of the second sheet of filter media 60. As the second edge 62 of the second sheet of filter media 60 is non-planar, the winding bead 72 also is non-planar. In some embodiments where a filter face is non-planar, a winding bead disposed adjacent to the filter face is also non-planar. However, in other embodiments, where a filter face is non-planar, a winding bead disposed adjacent to that filter face is planar.

[0038] While various embodiments described herein involve a coiled media configuration, it is to be understood that non-coiled configurations such as panels may be used. In examples using a non-coiled configuration, stacked layers may each have a trailing end. A winding bead and a seal bead may be used on the non-coiled configurations similarly to the use in a coiled configuration. FIG. 2A depicts another example filter assembly 100 consistent with the technology disclosed herein. The filter assembly 100 is constructed of filter media 110 defining a first flow face 120, a second flow face 130, and a plurality of flutes 140 extending from the first flow face 120 to the second flow face 130. In the current example, the first flow face 120 is defined on a first end 102 of the filter assembly 100 and the second flow face 130 is defined on a second, opposite end 104 of the filter assembly 100.

[0039] The filter media 110 is a plurality of sheets of filter media, specifically a first sheet of filter media 150 and a second sheet of filter media 160. The second sheet of filter media 160 is adjacent to the first sheet of filter media 150. The first sheet of filter media 150 and the second sheet of filter media 160 mutually define the plurality of flutes 140. The filter media 110 defines a coiled configuration about a z-axis. Accordingly, each of the first sheet of filter media 150 and the second sheet of filter media 160 defines a coiled configuration about the z-axis. As such, the plurality of flutes 140 are also in a coiled configuration about the z-axis. To depict components not otherwise visible, an end portion 101 of the filter media 110 is depicted in a cutaway view that extends outward from the coil, but generally the substantial length of the filter media 110 is in a coiled configuration. In this example, the plurality of flutes 140 are generally parallel.

[0040] The first sheet of filter media 150 and the second sheet of filter media 160 are generally elongate. In this example, the first sheet of filter media 150 and the second sheet of filter media 160 are discontinuous, meaning that the first sheet of filter media 150 and the second sheet of filter media 160 are separate sheets of filter media. In examples consistent with the current embodiment, the first sheet of filter media 150 is a fluted sheet and the second sheet of filter media 160 is a facing sheet, where a “facing sheet” is generally defined as a planar, unfluted sheet.

[0041] The first sheet of filter media 150 defines a first edge 152 and a second edge 154 that is opposite the first edge 152. The first edge 152 defines the first flow face 120 and the second edge 154 defines the second flow face 130. Similarly, the second sheet of filter media 160 defines a third edge 162 and a fourth edge 164 that is opposite the third edge 162. The third edge 162 defines the first flow face 120 and the fourth edge 164 defines the second flow face 130. The filter assembly 100 is generally constructed to define a fluid pathway 116 between the first flow face 120 and the second flow face 130 through the filter media 110 such that the fluid is filtered by the filter media 110. Each of the plurality of flutes 140 defines a flute opening 142, which is more clearly visible in FIG. 2B. Each of the plurality of flutes 140 defines a flute closure 170, which is visible in FIG. 2A because a portion of the first sheet of filter media 150 is cut away for clarity. The flute closure may be referred to herein as a seal bead. In the current example, the flute opening 142 is defined at the first flow face 120 and the flute closure 170 is defined towards the second flow face 130. In some embodiments, including the one depicted, the flute closure 170 is adjacent to the second flow face 130. More particularly, the flute closure 170 can abut the second flow face 130. The flute closure 170 can have a variety of different configurations, but in the current embodiment, the flute closure 170 is a physical barrier such as a glue bead (e.g., seal bead) disposed between the first sheet of filter media 150 and the second sheet of filter media 160 towards the second flow face.

[0042] A winding bead 172 can be disposed within the coil and outside of the plurality of flutes 140 such that fluids passing through the first flow face 120 and second flow face 130 of the filter assembly 100 must first pass through the filter media 110. Additional obstructions can also be disposed in any other gaps in the filter media to prevent fluid flow therethrough, such as around the outer perimeter of the filter assembly 100 and in a central opening of the filter assembly 100. An obstruction can be formed through depositing an adhesive, such as a glue bead or other barrier at the relevant location. According to various examples, winding bead 172 is applied as the filter media 110 is coiled about itself.

[0043] In various embodiments, including the one depicted, at least one of the first flow face 120 and the second flow face 130 is non-planar. In examples consistent with this particular embodiment, the first flow face 120 is non-planar and the second flow face 130 is non-planar. In particular, the first edge 152 and the third edge 162 (particularly visible in FIG. 2B) that define the first flow face 120 are non-planar, even though the first edge 152 is planar and the third edge 162 is planar. The second edge 154 and fourth edge 164 that define the second flow face 130 are similarly non- planar, even though the second edge 154 is planar and the fourth edge 164 is planar. In the current embodiment the flute closure 170 is disposed adjacent to the fourth edge 164 of the second sheet of filter media 160 and, as such, the flute closure 170 is generally planar, but in some alternate examples the flute closure 170 is non-planar. Similarly, the winding bead 172 is disposed adjacent to the third edge 162 of the second sheet of filter media 160 and so the winding bead 172 is also planar, but in some alternate examples the winding bead is non-planar 172.

[0044] In various embodiments, at least one flute of the plurality of flutes defines an opening that is non-planar, such as a first flute 144 (FIG. 2B) in this example embodiment. In particular, in the current embodiment all of the plurality of flutes 140 define a non-planar opening, by virtue of the first edge 152 and third edge 162 defining one flute opening and the second edge 154 and fourth edge 164 defining the other flute opening.

[0045] FIG. 3 depicts a cross-section of yet another example filter assembly 200 consistent with the technology disclosed herein. The filter assembly 200 is constructed of filter media 210 having a first elongate edge 212 defining a first flow face 220, a second elongate edge 214 defining a second flow face 230, and a plurality of flutes 240 extending from the first flow face 220 to the second flow face 230. In the current example, the first flow face 220 is defined on a first end 202 of the filter assembly 200 and the second flow face 230 is defined on a second, opposite end 204 of the filter assembly 200. Similar to the embodiments depicted in FIGS. 1-2B, the filter assembly 200 is generally constructed to define a fluid pathway 218 between the first flow face 220 and the second flow face 230 through the filter media 210 such that the fluid is filtered by the filter media 210. As such, each of the plurality of flutes 240 defines a flute opening and a flute closure. Also similar to the embodiments depicted in FIGS. 1-2B, the filter assembly 200 is constructed of filter media 210 that is in a coiled configuration about a z-axis. Example filter media 210 configurations consistent with FIG. 3 and other embodiments disclosed herein will be described in more detail below with reference to FIGS. 4A-4C.

[0046] In various embodiments, at least one of the first flow face 220 and the second flow face 230 is planar. In examples consistent with this particular embodiment, the first flow face 220 is planar and the second flow face 230 is planar, and the first flow face 220 is non-parallel to the second flow face 230. In some embodiments one or both of the first flow face and the second flow face can be non-planar. For example, one or both of the first flow face and the second flow face can be cut to be a three- dimensional surface.

[0047] The filter assembly 200 of FIG. 3 can be constructed from variety of configurations of filter media 210, examples of which are depicted and described in association with FIGS. 4A - 4C and also described in general later in this document. Referring first to FIG. 4A, the example filter media 210 is a plurality of sheets of filter media, specifically a first sheet of filter media 250 and a second sheet of filter media 260. The second sheet of filter media 260 is adjacent to the first sheet of filter media 250. The first sheet of filter media 250 and the second sheet of filter media 260 mutually define the plurality of flutes 240. While currently depicted in an uncoiled arrangement, to be consistent with FIG. 3, the filter media 210 is arranged in a coiled configuration about a z-axis (FIG. 3). Accordingly, each of the first sheet of filter media 250 and the second sheet of filter media 260 are arranged to define a coiled configuration about the z-axis. As such, the plurality of flutes 240 are also in a coiled configuration about the z-axis. In this example, the plurality of flutes 240 are generally parallel. In examples consistent with the embodiment of FIG. 4A, the first sheet of filter media 250 is a fluted sheet and the second sheet of filter media 260 is a fluted sheet.

[0048] The first sheet of filter media 250 and the second sheet of filter media 260 are generally elongate. In this example, the first sheet of filter media 250 and the second sheet of filter media 260 are continuous and separated by a fold 270. The fold 270 defines the second flow face 230 and the second elongate edge 214 of the filter assembly 200 depicted in FIG. 3. The first sheet of filter media 250 defines a first edge 252 and the second sheet of filter media 260 defines a second edge 262. The first edge 252 and the second edge 262 are configured to mutually define the first flow face 220, and therefore the first elongate edge 212, of the filter assembly 200 (FIG. 3).

[0049] In the current example filter media 210, flute openings 242 (visible in FIG. 4A) of the plurality of flutes 240 is defined at the first flow face 220 (visible in FIG. 3) and a flute closure 270 (visible in FIG. 4A) is defined towards the second flow face 230 (visible in FIG. 3). In some embodiments, including the one depicted, the flute closure 270 is adjacent to the second flow face 230 (FIG. 3). More particularly, the flute closure 270 can abut the second flow face 230. The flute closure 270 can have a variety of different configurations, but in the embodiment of FIG. 4 A, the flute closure 270 is the fold 270 between the first sheet of filter media 250 and the second sheet of filter media 260.

[0050] A winding bead 272 can be disposed outside of the plurality of flutes 240 such that fluids passing through the first flow face 220 and second flow face 230 of the filter assembly 200 (FIG. 3) must first pass through the filter media 210. The winding bead can be disposed towards the first elongate edge 212 of the filter media 210 during construction of the filer assembly 200 of FIG. 3. As has been described, additional obstructions can also be disposed in any other gaps in the filter media 210 to prevent fluid flow therethrough, such as around the outer perimeter of the filter assembly 200 and in a central opening of the filter assembly 200. An obstruction can be formed through depositing an adhesive, such as a glue bead at the relevant location.

[0051] As has been mentioned, to construct the filter assembly 200 of FIG. 3, the filter media 210 of FIG. 4A is coiled around a z-axis, and winding beads 272 are disposed in contact with the filter media 210 at relevant locations to elicit the desired fluid flow through the media. In various embodiments, after the filter media 210 is coiled into a cylindrical shape, the filter media 210 is cut to form the desired shape of the first flow face 220. In the embodiment depicted in FIG. 3, the first flow face 220 can be cut with a cutting tool to form a plane that is non-parallel to the second flow face 230. In examples consistent with the current embodiment the second flow face 230 is generally not cut due to the presence of the fold 270, which forms an obstruction that guides fluid flow. The filter media 210 can be cut using laser cutting, in some examples, and in other examples the filter media 210 can be cut using a sharp edge, such as a saw or knife blade. In such embodiments, the winding beads 272 can be disposed in contact with the filter media 210 at locations that will not be cut and removed.

[0052] In some alternative embodiments, the first elongate edge 212 of the filter media 210 is cut before being coiled to form the intended shape of the relevant flow face(s) after the filter media 210 is coiled.

[0053] FIG. 4B depicts another filter media 210 consistent with the embodiment depicted in FIG. 3 before the filter media is coiled and cut. The filter media 210 is a plurality of sheets of filter media, specifically a first sheet of filter media 257 and a second sheet of filter media 267. The second sheet of filter media 267 is adjacent to the first sheet of filter media 257. The first sheet of filter media 257 and the second sheet of filter media 267 mutually define the plurality of flutes 240 depicted in FIG. 3.

[0054] The first sheet of filter media 257 and the second sheet of filter media 267 are generally elongate. In this example, the first sheet of filter media 257 and the second sheet of filter media 267 are discontinuous. The first sheet of filter media 257 defines a first edge 254 and the second sheet of filter media 267 defines a second edge 264. The first edge 254 and the second edge 264 are configured to mutually define the first flow face 220, and therefore the first elongate edge 212, of the filter assembly 200 (FIG. 3). The first sheet of filter media 257 defines a third edge 256 and the second sheet of filter media 267 defines a fourth edge 266. The third edge 256 and the fourth edge 266 are configured to mutually define the second flow face 230, and therefore the second elongate edge 214, of the filter assembly 200 (FIG. 3).

[0055] For construction of the filter assembly 200 of FIG. 3, the filter media 210 is arranged in a coiled configuration about a z-axis (FIG. 3). Accordingly, each of the first sheet of filter media 257 and the second sheet of filter media 267 are arranged to define a coiled configuration about the z-axis. As such, the plurality of flutes 240 are also in a coiled configuration about the z-axis. In this example, the plurality of flutes 240 are generally parallel. In examples consistent with the embodiment of FIG. 4B, the first sheet of filter media 257 is a fluted sheet and the second sheet of filter media 267 is also a fluted sheet.

[0056] In the current example filter media 210, the flute opening 245 (visible in FIG. 4B) is defined at the first flow face 220 (visible in FIG. 3) and a flute closure 275 (visible in FIG. 4B in a cut-away section) is defined towards the second flow face 230 (visible in FIG. 3). In some embodiments, including the one depicted in FIG. 4B, the flute closure 275 is adjacent to the second flow face 230 (FIG. 3). More particularly, the flute closure 275 can abut the second flow face 230. The flute closure 275 can have a variety of different configurations, but in the embodiment of FIG. 4B, the flute closure 275 is a physical obstruction, such as a glue bead deposited between the first sheet of filter media 257 and the second sheet of filter media 267.

[0057] A winding bead 274 can be disposed outside of the plurality of flutes 240 such that fluids passing through the first flow face 220 and second flow face 230 of the filter assembly 200 (FIG. 3) must first pass through the filter media 210. The winding bead can be disposed towards the first elongate edge 212 of the filter media 210 during construction of the filter assembly 200 of FIG. 3. As has been described, additional obstructions can also be disposed in any other gaps in the filter media 210 to prevent fluid flow therethrough, such as around the outer perimeter of the filter assembly 200 and in a central opening of the filter assembly 200.

[0058] The filter media 210 of FIG. 4B can be cut and formed into a filter assembly 200 similarly to the filter media described in FIG. 4A, above.

[0059] FIG. 4C depicts yet another filter media 210 consistent with the embodiment depicted in FIG. 3 before the filter media is coiled and cut. The filter media 210 is a plurality of sheets of filter media, specifically a first sheet of filter media 251 and a second sheet of filter media 261. The second sheet of filter media 261 is adjacent to the first sheet of filter media 251. The first sheet of filter media 251 and the second sheet of filter media 261 mutually define the plurality of flutes 240.

[0060] The first sheet of filter media 251 and the second sheet of filter media 261 are generally elongate. In this example, the first sheet of filter media 251 and the second sheet of filter media 261 are discontinuous. The first sheet of filter media 251 defines a first edge 253 and the second sheet of filter media 261 defines a second edge 263. The first edge 253 and the second edge 263 are configured to mutually define the first flow face 220, and therefore the first elongate edge 212, of the filter assembly 200 (FIG. 3). The first sheet of filter media 251 defines a third edge 255 and the second sheet of filter media 261 defines a fourth edge 265. The third edge 255 and the fourth edge 265 are configured to mutually define the second flow face 230, and therefore the second elongate edge 214, of the filter assembly 200 (FIG. 3).

[0061] For construction of the filter assembly 200 of FIG. 3, the filter media 210 is arranged in a coiled configuration about a z-axis (FIG. 3). Accordingly, each of the first sheet of filter media 251 and the second sheet of filter media 261 are arranged to define a coiled configuration about the z-axis. As such, the plurality of flutes 240 are also in a coiled configuration about the z-axis. In this example, the plurality of flutes 240 are generally parallel. In examples consistent with the embodiment of FIG. 4C, the first sheet of filter media 251 is a fluted sheet and the second sheet of filter media 261 is a facing sheet.

[0062] In the current example filter media 210, the flute opening 243 (visible in FIG. 4C) is defined at the first flow face 220 (visible in FIG. 3), and a flute closure 271 (visible in FIG. 4B in a cut-away section) is defined towards the second flow face 230 (visible in FIG. 3). In some embodiments, including the one depicted in FIG. 4C, the flute closure 271 is adjacent to the second flow face 230 (FIG. 3). More particularly, the flute closure 271 can abut the second flow face 230. The flute closure 271 can have a variety of different configurations, but in the embodiment of FIG. 4C, the flute closure 271 is a physical obstruction, such as a glue bead deposited between the first sheet of filter media 251 and the second sheet of filter media 261.

[0063] A winding bead 274 can be disposed outside of the plurality of flutes 240 such that fluids passing through the first flow face 220 and second flow face 230 of the filter assembly 200 (FIG. 3) must first pass through the filter media 210. The winding bead can be disposed towards the first elongate edge 212 of the filter media 210 during construction of the filter assembly 200 of FIG. 3. As has been described, additional obstructions can also be disposed in any other gaps in the filter media 210 to prevent fluid flow therethrough, such as around the outer perimeter of the filter assembly 200 and in a central opening of the filter assembly 200.

[0064] The filter media 210 of FIG. 4C can be cut and formed into a filter assembly 200 similarly to the filter media described in FIG. 4A, above.

[0065] According to various embodiments described herein, the tail end layer of the filter media is sealed to an adjacent layer of the filter media. For example, FIGS. 5 A and 5B show a portion of filter media 510 located at the tail end of the coil. The filter media 510 has a first elongate edge 520 and a second elongate edge 530. A seal bead 525 is disposed along a longitudinal axis along the second elongate edge 530 and a winding bead 535 is disposed along a longitudinal axis along the first elongate edge 520.

[0066] A tail-end seal (TES) 550 is disposed along the tail-end 540 of the filter media 510. The tail-end 540 may also be referred to herein as a “trailing edge.” In this example, the TES 550 is disposed substantially perpendicular to the first elongate edge 520 and the second elongate edge 530. According to various embodiments, the TES 550 is disposed over the end of the filter media and comprises any type of sealant (e.g., hot melt TES). FIG. 5B shows an outside view of the filter cartridge with an external TES 550.

[0067] According to various embodiments, a winding bead and / or seal bead may be used to provide a tail-end seal. For example, FIGS 6 A and 6B show an example in which the winding bead 635 has a first portion 637 that extends longitudinally along the first elongate edge 620 and a seal bead 625 extends longitudinally along the second elongate edge 630. While the first elongate edge 620 is shown to be substantially parallel with the second elongate edge 630, it is to be understood that in some examples, the first elongate edge 620 and the second elongate edge 630 are not parallel.

[0068] The first portion 637 may be disposed substantially along the edge of the first elongate edge 620. For example, the first portion may be spaced apart from the first elongate edge 620 by greater than or equal to about 0% to less than or equal to about 25% of a height, H, defined between the first elongate edge 620 and the second elongate edge 630. In some examples the first portion 637 is spaced apart from the first elongate edge 620 by greater than about 5% to less than or equal to about 15% of H. It is to be understood that while the first portion 637 is shown having about the same distance from the first elongate edge 620 along the entirety of the first portion 637, the first portion 637 may be spaced apart by a distance that varies slightly along the length of the filter media due to manufacturing tolerances, for example.

[0069] Similarly, seal bead 625 may be spaced apart from the second elongate edge 630 by greater than or equal to about 0% to less than or equal to about 25% of a height, H, defined between the first elongate edge 620 and the second elongate edge 630. In some examples the seal bead 625 is spaced apart from the second elongate edge 630 by greater than about 5% to less than or equal to about 15% of H.

[0070] A second portion 639 of the winding bead 635 extends from the first portion 637 at a transition point 681 towards the second elongate edge 630 and the tail end 440 to a sealing region 660 towards the second elongate edge 630 and the tail end 440. The sealing region 660 is a portion of the media where the winding bead 635 and the seal bead 625 are configured to prevent air moving through the media without first passing through the media. A height of the sealing region, Hs, may be greater than or equal to about 0% of H and less than or equal to about 50% of H or between about greater than or equal to about 0% of H and less than or equal to about 50% of H. The second portion 639 may extend continuously from the first portion 637.

[0071] The second portion 639 may extend away from the first portion 637 such that a distance between the seal bead 625 and the winding bead 635 measured transverse to the longitudinal axis of the filter media decreases for a transition distance, Ta, extending from the transition point 681 to the sealing region 660 and / or the tail-end 640. For example, Ta may be in a range of about 5% to about 90% or in a range of about 25% to about 75% of a length of the last wrap of the pack. In some examples, Ta may be 90% to 150% times the length of the last wrap of the pack.

[0072] The second portion may extend away from the first portion at an initial oblique angle 0i in a range of about greater than 90 degrees to less than about 180 degrees. In some examples, 0i may be in a range of about 100 degrees to about 170 degrees. The second portion 639 may extend to a sealing region 660 proximate the tail-end. In some examples, the winding bead 635 has a third portion 641 that extends from the second portion 639 as shown in FIG. 6B. In this example, the third portion 641 of the winding bead 635 extends from the second portion 639 towards the second elongate edge 630 at a non-zero angle, 02, relative to the second portion 639. 02 may be in a range of about greater than 90 degrees to less than about 180 degrees. In some examples, 02 may be in a range of about 100 degrees to about 170 degrees. 0i may be the same as 02 or may be different than 02. For example, 02 may be greater than 0i.

[0073] A portion of the seal bead 625 may also be disposed within the sealing region 660. In some configurations, the winding bead 635 overlaps with the seal bead 625 in the sealing region 660. In some examples, the seal bead 625 and the winding bead 635 do not overlap within the sealing region 660. For example, a bridge may at least partially overlap with the winding bead 635 and the seal bead 625 in the sealing region 660 as described in more detail in FIGS. 8A-8D.

[0074] The seal bead 625 and the winding bead 635 may include urethane, adhesive, sealant (e.g., urethane and hot melt), or any combination thereof. The seal bead 625 may be composed of the same material or a different material than that of the winding bead 635. In some examples, the different portions of the winding bead 635 may include different materials. For example, the second portion 639 of the winding bead 635 may be composed of a different material than the first 637 and / or third 641 portions of the winding bead 635.

[0075] One or both of the first portion and the second portion may not be linear as shown in the example of FIG. 6C. For example, the second portion 679 of the winding 675 bead may extend away from the first portion 677 at a radius of curvature relative to the first portion 677. In some examples, a third portion 683 extends from the second portion 679 at a radius of curvature different than a radius of curvature of the second portion 679. FIG. 6D illustrates a filter cartridge having a variable winding bead 635. While the winding bead 635 is shown in this view, it is to be understood that the winding bead 635 is between layers of the filter cartridge and it not visible from the outside of the filter cartridge unlike the TES 550 of FIG. 5B, which is disposed on the outside of the last wrap of the filter media.

[0076] While FIGS. 6A - 6D shows a winding bead that deviates from the first elongate edge, it is to be understood that in some configurations, the seal bead may deviate from the second elongate edge to meet the winding bead in the sealing region.

[0077] FIGS. 7A and 7B illustrate another view of the variable winding bead in accordance with embodiments described herein. Both 7A and 7B show a last wrap of the respective pack having a length L.

[0078] Specifically, FIG. 7 A shows a filter media having a winding bead 735 and a seal bead 725 disposed thereon. As described above, the winding bead 735 has a first portion 737 and a second portion 739 that extends from the first portion 737 toward the seal bead 725. A third portion 770 extends from the second portion 739 towards the seal bead 725 and the tail-end 740. FIG. 7A shows an example in which the Tais about 25% of a length of the last wrap of the pack leaving blocked flutes 780 that are no longer effective as a filtering media.

[0079] FIG. 7B shows a filter media having a winding bead 795 and a seal bead 727 disposed thereon. As described above, the winding bead 795 has a first portion 797 and a second portion 799 that extends from the first portion 797 toward the seal bead 727. A third portion 798 extends from the second portion 799 towards the seal bead 727 and the tail-end 742. FIG. 7B shows an example in which the Ta is about 95% of a length of the last wrap of the pack leaving blocked flutes 785. While FIGS. 7A and 7B show the transition between the first portion and the second portion occurring in the last wrap of the pack, it is to be understood that the transition may occur earlier in the pack. For example, the transition may occur in the last 1.5 wraps or within the last two or three wraps of the pack.

[0080] According to various examples, the winding bead and the seal bead may not intersect in the sealing region. A separate material may at least partially overlap with the winding bead and the seal bead within the sealing region. FIGS. 8 A - 8D illustrate examples in which the winding bead 835 and the seal bead 825 do not intersect within the sealing region 860 in accordance with embodiments described herein. In this example, the winding bead 835 extends towards the tail end 840 and the seal bead 825, but leaves a gap between the winding bead and the seal bead having a gap length, Lg. Lgmay be in a range of greater than 0% to less than or equal to 50% of the total pack height, H. In some examples, Lg is in a range of about greater than or equal to 5% and less than or equal to 50% of H.

[0081] A bridge material 855 is disposed at least partially overlapping with the winding bead 835 and the seal bead 825. According to various examples, the bridge material 855 is disposed on a same surface of the filter media as the winding bead 835. In some configurations, the bridge material 855 is disposed on the outside of the filter media such that the bridge material 855 does not come into direct contact with the seal bead 825. The bridge material may comprise one or more of urethane, adhesive, sealant (e.g., urethane and hot melt), or any combination thereof. FIGS. 8B- 8D illustrate different views of a filter media having a seal bead 825 and a variable winding bead 835 that do not overlap.

[0082] FIG. 9 shows a process for manufacturing a filter cartridge having a variable winding bead in accordance with embodiments described herein. A filter media is provided 910. The filter media comprises a trailing edge, a first elongate edge extending from a first end of the trailing edge, and a second elongate edge extending from a second end of the trailing edge.

[0083] A seal bead is disposed 920 on the filter media along at least a portion of the second elongate edge. A winding bead is disposed 930 on the filter media simultaneously in a longitudinal direction towards the trailing edge and a direction away from the first elongate edge towards the second elongate edge.

[0084] According to various examples, the winding bead is disposed simultaneously along the longitudinal direction and the direction away from the first elongate edge towards the first second edge to create an initial angle relative to the first elongate edge of about greater than 90 degrees to less than about 180 degrees. In some examples, the initial angle may be in a range of about 100 degrees to about 170 degrees. The filter media may be wrapped to form the filter assembly and the winding bead may be disposed during the wrapping of the filter media. In some examples, a section of the filter media defined between the winding bead, the first elongate edge, and the trailing edge is cut to form the filter assembly. An adhesive tape may be applied to extend along the trailing edge to couple to an outer surface of the filter media to the trailing edge.

[0085] Statement of the Embodiments

[0086] Example 1. A filter cartridge comprising: a coiled filter media comprising a trailing edge, a first elongate edge extending from a first end of the trailing edge, and a second elongate edge extending from a second end of the trailing edge; a seal bead disposed on the filter media and extending along at least a portion of the second elongate edge; and a winding bead disposed on the filter media, the winding bead comprising: a first portion extending longitudinally along the first elongate edge toward the trailing edge; and a second portion extending from the first portion towards the second elongate edge, wherein at least a portion of each of the seal bead and the second portion are disposed within a sealing region portion of the filter media.

[0087] Example 2. The filter cartridge of Example 1, wherein the second portion of the winding bead extends from the first portion at an initial oblique angle relative to the first portion.

[0088] Example 3. The filter cartridge of Example 2, wherein the initial oblique angle of the second portion of the winding bead is greater than or equal to 90 degrees relative to the first portion of the winding bead.

[0089] Example 4. The filter cartridge of Example 2, wherein the initial oblique angle of the second portion of the winding bead is between 100 and 170 degrees relative to the first portion of the winding bead.

[0090] Example 5. The filter cartridge of any of Examples 1 through 4, wherein the second portion of the winding bead extends from the first portion at a radius of curvature relative to the first portion. Example 6. The filter cartridge of any of Examples 1 through 5, wherein the second portion of the winding bead extends from the first portion at a non-zero angle relative to the first elongate edge.

[0091] Example 7. The filter cartridge of any of Examples 1 through 6, wherein the second portion of the winding bead continuously extends from the first portion of the winding bead.

[0092] Example 8. The filter cartridge of any of Examples 1 through 7, wherein the sealing region is proximate the trailing edge.

[0093] Example 9. The filter cartridge of any of Examples 1 through 8, wherein the sealing region is disposed at a transition distance from the trailing edge.

[0094] Example 10. The filter cartridge of any of Examples 1 through 9, wherein an outer layer of the filter cartridge defines an outer coil of the filter media, wherein the transition distance is less than a length of the outer coil of the filter media.

[0095] Example 11. The filter cartridge of any of Examples 1 through 10, wherein an outer layer of the filter cartridge defines an outer coil of the filter media and the transition distance is in a range of 90% to 150% of the outer coil of the filter media.

[0096] Example 12. The filter cartridge of any of Examples 1 through 11, wherein the second portion of the winding bead is closer to the trailing edge than the first portion of the winding bead.

[0097] Example 13. The filter cartridge of any of Examples 1 through 12, wherein at least a portion of the first portion of the winding bead is spaced away from the first elongate edge by less than or equal to 15% of a width defined between the first elongate edge and the second elongate edge. Example 14. The filter cartridge of any of Examples 1 through 13, wherein the filter media comprises a sheet defining a first face surface and a second face surface opposite the first face surface, wherein the seal bead is disposed on the first face surface and the winding bead is disposed on the second face surface.

[0098] Example 15. The filter cartridge of any of Examples 1 through 14, wherein the filter media comprises a first sheet and a second sheet, wherein the seal bead is disposed on a first face surface of the first sheet and between the first and second sheets, and wherein the winding bead is disposed on a second face surface of the first sheet and between the second and first sheets.

[0099] Example 16. The filter cartridge of Example 15, wherein the first sheet comprises a corrugated sheet and the second sheet comprises a flat sheet.

[0100] Example 17. The filter cartridge of any of Examples 1 through 16, wherein at least a portion of the first portion of the winding bead is parallel to the first elongate edge.

[0101] Example 18. The filter cartridge of any of Examples 1 through 17, wherein at least a portion of the seal bead is parallel to the second elongate edge.

[0102] Example 19. The filter cartridge of any of Examples 1 through 18, wherein the filter media further comprises a leading edge, wherein the seal bead is located along the second elongate edge at the leading edge and the winding bead is located along the first elongate edge at the leading edge.

[0103] Example 20. The filter cartridge of any of Examples 1 through 19, wherein the second portion of the winding bead defines a linear path from the first portion of the winding bead and towards the second elongate edge.

[0104] Example 21. The filter cartridge of any of Examples 1 through 20, wherein the second portion of the winding bead defines a non-linear path from the first portion of the winding bead and towards the second elongate edge. Example 22. The filter cartridge of any of Examples 1 through 21, further comprising an adhesive tape extending along the trailing edge to couple the trailing edge to an outer surface of the filter media.

[0105] Example 23. The filter cartridge of any of Examples 1 through 22, wherein the seal bead comprises one or more of urethane, adhesive, and sealant and the winding bead comprises one or more of urethane, adhesive, and sealant.

[0106] Example 24. The filter cartridge of any of Examples 1 through 23, wherein the filter media defines a coiled configuration having one or more of a circular shape, an obround shape, D-shaped, and rounded squares.

[0107] Example 25. The filter cartridge of any of Examples 1 through 24, wherein the first elongate edge extends parallel to the second elongate edge.

[0108] Example 26. The filter cartridge of any of Examples 1 through 25, wherein the seal bead and the winding bead overlap within the sealing region.

[0109] Example 27. The filter cartridge of any of Examples 1 through 26, wherein the sealing region is less than or equal to half and greater than zero of a pack height of the filter cartridge.

[0110] Example 28. The filter cartridge of any of Examples 1 through 27, further comprising a bridging material that is disposed between the seal bead and the winding bead within the sealing region.

[0111] Example 29. A filter cartridge comprising: a coiled filter media extending along a longitudinal axis and comprising a trailing edge, a first elongate edge extending from a first end of the trailing edge, and a second elongate edge extending from a second end of the trailing edge; a seal bead disposed on the filter media and extending along at least a portion of the second elongate edge; and a winding bead disposed on the filter media, the winding bead comprising: a first portion extending longitudinally along the first elongate edge; and a second portion having a first end disposed proximate the first portion and a second end disposed within a sealing region portion of the filter media, wherein a distance between the seal bead and the winding bead, measured transverse to the longitudinal axis, decreases for a transition region extending from the first portion of the winding bead to the sealing region.

[0112] Example 30. The filter cartridge of Example 29, wherein the second portion of the winding bead extends from the first portion at an initial oblique angle relative to the first portion.

[0113] Example 31. The filter cartridge of Example 30, wherein the initial oblique angle of the second portion of the winding bead is greater than or equal to 90 degrees relative to the first portion of the winding bead.

[0114] Example 32. The filter cartridge of Example 30, wherein the initial oblique angle of the second portion of the winding bead is between 100 and 170 degrees relative to the first portion of the winding bead.

[0115] Example 33. The filter cartridge of any of Examples 29 through 32, wherein the second portion of the winding bead extends from the first portion at a radius of curvature relative to the first portion.

[0116] Example 34. The filter cartridge of any of Examples 29 through 33, wherein the second portion of the winding bead extends from the first portion at a non-zero angle relative to the first elongate edge.

[0117] Example 35. The filter cartridge of any of Examples 29 through 34, wherein the second portion of the winding bead continuously extends from the first portion of the winding bead. Example 36. The filter cartridge of any of Examples 29 through 35, wherein the sealing region is proximate the trailing edge.

[0118] Example 37. The filter cartridge of any of Examples 29 through 36, wherein the sealing region is disposed at a transition distance from the trailing edge.

[0119] Example 38. The filter cartridge of any of Examples 29 through 37, wherein an outer layer of the filter cartridge defines an outer coil of the filter media, wherein the transition distance is less than a length of the outer coil of the filter media.

[0120] Example 39. The filter cartridge of any of Examples 29 through 38, wherein an outer layer of the filter cartridge defines an outer coil of the filter media and the transition distance is in a range of 90% to 150% of the outer coil of the filter media.

[0121] Example 40. The filter cartridge of any of Examples 29 through 39, wherein the second portion of the winding bead is closer to the trailing edge than the first portion of the winding bead.

[0122] Example 41. The filter cartridge of any of Examples 29 through 40, wherein at least a portion of the first portion of the winding bead is spaced away from the first elongate edge by less than or equal to 15% of a width defined between the first elongate edge and the second elongate edge.

[0123] Example 42. The filter cartridge of any of Examples 29 through 41, wherein the filter media comprises a sheet defining a first face surface and a second face surface opposite the first face surface, wherein the seal bead is disposed on the first face surface and the winding bead is disposed on the second face surface.

[0124] Example 43. The filter cartridge of any of Examples 29 through 42, wherein the filter media comprises a first sheet and a second sheet, wherein the seal bead is disposed on a first face surface of the first sheet and between the first and second sheets, and wherein the winding bead is disposed on a second face surface of the first sheet and between the second and first sheets. Example 44. The filter cartridge of Example 43, wherein the first sheet comprises a corrugated sheet and the second sheet comprises a flat sheet.

[0125] Example 45. The filter cartridge of any of Examples 29 through 44, wherein at least a portion of the first portion of the winding bead is parallel to the first elongate edge.

[0126] Example 46. The filter cartridge of any of Examples 29 through 45, wherein at least a portion of the seal bead is parallel to the second elongate edge.

[0127] Example 47. The filter cartridge of any of Examples 29 through 46, wherein the filter media further comprises a leading edge, wherein the seal bead is located along the second elongate edge at the leading edge and the winding bead is located along the first elongate edge at the leading edge.

[0128] Example 48. The filter cartridge of any of Examples 29 through 47, wherein the second portion of the winding bead defines a linear path from the first portion of the winding bead and towards the second elongate edge.

[0129] Example 49. The filter cartridge of any of Examples 29 through 48, wherein the second portion of the winding bead defines a non-linear path from the first portion of the winding bead and towards the second elongate edge.

[0130] Example 50. The filter cartridge of any of Examples 29 through 49, further comprising an adhesive tape extending along the trailing edge to couple the trailing edge to an outer surface of the filter media.

[0131] Example 51. The filter cartridge of any of Examples 29 through 50, wherein the seal bead comprises one or more of urethane, adhesive, and sealant and the winding bead comprises one or more of urethane, adhesive, and sealant. Example 52. The filter cartridge of any of Examples 29 through 51, wherein the filter media defines a coiled configuration having one or more of a circular shape, an obround shape, D-shaped, and rounded squares.

[0132] Example 53. The filter cartridge of any of Examples 29 through 52, wherein the first elongate edge extends parallel to the second elongate edge.

[0133] Example 54. The filter cartridge of any of Examples 29 through 53, wherein the seal bead and the winding bead overlap within the sealing region.

[0134] Example 55. The filter cartridge of any of Examples 29 through 54, wherein the sealing region is less than or equal to half and greater than zero of a pack height of the filter cartridge.

[0135] Example 56. The filter cartridge of any of Examples 29 through 55, further comprising a bridging material that is disposed between the seal bead and the winding bead within the sealing region.

[0136] Example 57. A method comprising: providing a filter media comprising a trailing edge, a first elongate edge extending from a first end of the trailing edge, and a second elongate edge extending from a second end of the trailing edge; disposing a seal bead on the filter media along at least a portion of the second elongate edge; and disposing a winding bead on the filter media simultaneously in a longitudinal direction towards the trailing edge and a direction away from the first elongate edge towards the second elongate edge.

[0137] Example 58. The method of Example 57, wherein the winding bead is disposed simultaneously along the longitudinal direction and the direction away from the first elongate edge towards the first second edge to create an initial angle relative to the first elongate edge of about 100 degrees to about 170 degrees. Example 59. The method of Example 57 or Example 58, further comprising wrapping the filter media to form a filter assembly, wherein the winding bead is disposed during wrapping the filter media.

[0138] Example 60. The method of any of Examples 57 through 59, further comprising cutting a section of the filter media defined between the winding bead, the first elongate edge, and the trailing edge.

[0139] Example 61. The method of any of Examples 57 through 60, wherein disposing the winding bead on the filter media comprises disposing the winding bead on the filter media simultaneously in a longitudinal direction towards the trailing edge and a direction away from the first elongate edge towards seal bead such that the winding bead and the seal bead overlap proximate the second elongate edge.

[0140] It should also be noted that, as used in this specification and the appended claims, the phrase “configured” describes a system, apparatus, or other structure that is constructed to perform a particular task or adopt a particular configuration. The word "configured" can be used interchangeably with similar words such as “arranged,” “constructed,” “manufactured,” and the like.

[0141] All publications and patent applications in this specification are indicative of the level of ordinary skill in the art to which this technology pertains. All publications and patent applications are herein incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated by reference. In the event that any inconsistency exists between the disclosure of the present application and the disclosure(s) of any document incorporated herein by reference, the disclosure of the present application shall govern.

[0142] This application is intended to cover adaptations or variations of the present subject matter. It is to be understood that the above description is intended to be illustrative, and not restrictive, and the claims are not limited to the illustrative embodiments as set forth herein

Claims

We claim:

1. A filter cartridge comprising: a coiled filter media comprising a trailing edge, a first elongate edge extending from a first end of the trailing edge, and a second elongate edge extending from a second end of the trailing edge; a seal bead disposed on the filter media and extending along at least a portion of the second elongate edge; and a winding bead disposed on the filter media, the winding bead comprising: a first portion extending longitudinally along the first elongate edge toward the trailing edge; and a second portion extending from the first portion towards the second elongate edge, wherein at least a portion of each of the seal bead and the second portion are disposed within a sealing region portion of the filter media.

2. The filter cartridge of claim 1, wherein the second portion of the winding bead extends from the first portion at an initial oblique angle relative to the first portion.

3. The filter cartridge of claim 2, wherein the initial oblique angle of the second portion of the winding bead is greater than or equal to 90 degrees relative to the first portion of the winding bead.

4. The filter cartridge of claim 2, wherein the initial oblique angle of the second portion of the winding bead is between 100 and 170 degrees relative to the first portion of the winding bead.

5. The filter cartridge of claim 1, wherein the second portion of the winding bead extends from the first portion at a radius of curvature relative to the first portion.

6. The filter cartridge of claim 1, wherein the second portion of the winding bead extends from the first portion at a non-zero angle relative to the first elongate edge.

7. The filter cartridge of claim 1, wherein the second portion of the winding bead continuously extends from the first portion of the winding bead.

8. The filter cartridge of claim 1, wherein the sealing region is proximate the trailing edge.

9. The filter cartridge of claim 1, wherein the sealing region is disposed at a transition distance from the trailing edge.

10. The filter cartridge of claim 9, wherein an outer layer of the filter cartridge defines an outer coil of the filter media, wherein the transition distance is less than a length of the outer coil of the filter media.

11. The filter cartridge of claim 9, wherein an outer layer of the filter cartridge defines an outer coil of the filter media and the transition distance is in a range of 90% to 150% of the outer coil of the filter media.

12. The filter cartridge of claim 1, wherein the second portion of the winding bead is closer to the trailing edge than the first portion of the winding bead.

13. The filter cartridge of claim 1, wherein at least a portion of the first portion of the winding bead is spaced away from the first elongate edge by less than or equal to 15% of a width defined between the first elongate edge and the second elongate edge.

14. The filter cartridge of claim 1, wherein the filter media comprises a sheet defining a first face surface and a second face surface opposite the first face surface, wherein the seal bead is disposed on the first face surface and the winding bead is disposed on the second face surface.

15. The filter cartridge of claim 1, wherein the filter media comprises a first sheet and a second sheet, wherein the seal bead is disposed on a first face surface of the first sheet and between the first and second sheets, and wherein the winding bead is disposed on a second face surface of the first sheet and between the second and first sheets.

16. The filter cartridge of claim 15, wherein the first sheet comprises a corrugated sheet and the second sheet comprises a flat sheet.

17. The filter cartridge of claim 1, wherein at least a portion of the first portion of the winding bead is parallel to the first elongate edge.

18. The filter cartridge of claim 1, wherein at least a portion of the seal bead is parallel to the second elongate edge.

19. The filter cartridge of claim 1, wherein the filter media further comprises a leading edge, wherein the seal bead is located along the second elongate edge at the leading edge and the winding bead is located along the first elongate edge at the leading edge.

20. The filter cartridge of claim 1, wherein the second portion of the winding bead defines a linear path from the first portion of the winding bead and towards the second elongate edge.

21. The filter cartridge of claim 1, wherein the second portion of the winding bead defines a non-linear path from the first portion of the winding bead and towards the second elongate edge.

22. The filter cartridge of claim 1, further comprising an adhesive tape extending along the trailing edge to couple the trailing edge to an outer surface of the filter media.

23. The filter cartridge of claim 1, wherein the seal bead comprises one or more of urethane, adhesive, and sealant and the winding bead comprises one or more of urethane, adhesive, and sealant.

24. The filter cartridge of claim 1, wherein the filter media defines a coiled configuration having one or more of a circular shape, an obround shape, D-shaped, and rounded squares.

25. The filter cartridge of claim 1, wherein the first elongate edge extends parallel to the second elongate edge.

26. The filter cartridge of claim 1, wherein the seal bead and the winding bead overlap within the sealing region.

27. The filter cartridge of claim 1, wherein the sealing region is less than or equal to half and greater than zero of a pack height of the filter cartridge.

28. The filter cartridge of claim 1, further comprising a bridging material that is disposed between the seal bead and the winding bead within the sealing region.

29. A filter cartridge comprising: a coiled filter media extending along a longitudinal axis and comprising a trailing edge, a first elongate edge extending from a first end of the trailing edge, and a second elongate edge extending from a second end of the trailing edge; a seal bead disposed on the filter media and extending along at least a portion of the second elongate edge; and a winding bead disposed on the filter media, the winding bead comprising: a first portion extending longitudinally along the first elongate edge; and a second portion having a first end disposed proximate the first portion and a second end disposed within a sealing region portion of the filter media, wherein a distance between the seal bead and the winding bead, measured transverse to the longitudinal axis, decreases for a transition region extending from the first portion of the winding bead to the sealing region.

30. The filter cartridge of claim 29, wherein the second portion of the winding bead extends from the first portion at an initial oblique angle relative to the first portion.

31. The filter cartridge of claim 30, wherein the initial oblique angle of the second portion of the winding bead is greater than or equal to 90 degrees relative to the first portion of the winding bead.

32. The filter cartridge of claim 30, wherein the initial oblique angle of the second portion of the winding bead is between 100 and 170 degrees relative to the first portion of the winding bead.

33. The filter cartridge of claim 29, wherein the second portion of the winding bead extends from the first portion at a radius of curvature relative to the first portion.

34. The filter cartridge of claim 29, wherein the second portion of the winding bead extends from the first portion at a non-zero angle relative to the first elongate edge.

35. The filter cartridge of claim 29, wherein the second portion of the winding bead continuously extends from the first portion of the winding bead.

36. The filter cartridge of claim 29, wherein the sealing region is proximate the trailing edge.

37. The filter cartridge of claim 29, wherein the sealing region is disposed at a transition distance from the trailing edge.

38. The filter cartridge of claim 29, wherein an outer layer of the filter cartridge defines an outer coil of the filter media, wherein the transition distance is less than a length of the outer coil of the filter media.

39. The filter cartridge of claim 29, wherein an outer layer of the filter cartridge defines an outer coil of the filter media and the transition distance is in a range of 90% to 150% of the outer coil of the filter media.

40. The filter cartridge of claim 29, wherein the second portion of the winding bead is closer to the trailing edge than the first portion of the winding bead.

41. The filter cartridge of claim 29, wherein at least a portion of the first portion of the winding bead is spaced away from the first elongate edge by less than or equal to 15% of a width defined between the first elongate edge and the second elongate edge.

42. The filter cartridge of claim 29, wherein the filter media comprises a sheet defining a first face surface and a second face surface opposite the first face surface, wherein the seal bead is disposed on the first face surface and the winding bead is disposed on the second face surface.

43. The filter cartridge of claim 29, wherein the filter media comprises a first sheet and a second sheet, wherein the seal bead is disposed on a first face surface of the first sheet and between the first and second sheets, and wherein the winding bead is disposed on a second face surface of the first sheet and between the second and first sheets.

44. The filter cartridge of claim 43, wherein the first sheet comprises a corrugated sheet and the second sheet comprises a flat sheet.

45. The filter cartridge of claim 29, wherein at least a portion of the first portion of the winding bead is parallel to the first elongate edge.

46. The filter cartridge of claim 29, wherein at least a portion of the seal bead is parallel to the second elongate edge.

47. The filter cartridge of claim 29, wherein the filter media further comprises a leading edge, wherein the seal bead is located along the second elongate edge at the leading edge and the winding bead is located along the first elongate edge at the leading edge.

48. The filter cartridge of claim 29, wherein the second portion of the winding bead defines a linear path from the first portion of the winding bead and towards the second elongate edge.

49. The filter cartridge of claim 29, wherein the second portion of the winding bead defines a non-linear path from the first portion of the winding bead and towards the second elongate edge.

50. The filter cartridge of claim 29, further comprising an adhesive tape extending along the trailing edge to couple the trailing edge to an outer surface of the filter media.

51. The filter cartridge of claim 29, wherein the seal bead comprises one or more of urethane, adhesive, and sealant and the winding bead comprises one or more of urethane, adhesive, and sealant.

52. The filter cartridge of claim 29, wherein the filter media defines a coiled configuration having one or more of a circular shape, an obround shape, D-shaped, and rounded squares.

53. The filter cartridge of claim 29, wherein the first elongate edge extends parallel to the second elongate edge.

54. The filter cartridge of claim 29, wherein the seal bead and the winding bead overlap within the sealing region.

55. The filter cartridge of claim 29, wherein the sealing region is less than or equal to half and greater than zero of a pack height of the filter cartridge.

56. The filter cartridge of claim 29, further comprising a bridging material that is disposed between the seal bead and the winding bead within the sealing region.

57. A method comprising:providing a filter media comprising a trailing edge, a first elongate edge extending from a first end of the trailing edge, and a second elongate edge extending from a second end of the trailing edge; disposing a seal bead on the filter media along at least a portion of the second elongate edge; and disposing a winding bead on the filter media simultaneously in a longitudinal direction towards the trailing edge and a direction away from the first elongate edge towards the second elongate edge.

58. The method of claim 57, wherein the winding bead is disposed simultaneously along the longitudinal direction and the direction away from the first elongate edge towards the first second edge to create an initial angle relative to the first elongate edge of about 100 degrees to about 170 degrees.

59. The method of claim 57, further comprising wrapping the filter media to form a filter assembly, wherein the winding bead is disposed during wrapping the filter media.

60. The method of claim 57, further comprising cutting a section of the filter media defined between the winding bead, the first elongate edge, and the trailing edge.

61. The method of claim 57, wherein disposing the winding bead on the filter media comprises disposing the winding bead on the filter media simultaneously in a longitudinal direction towards the trailing edge and a direction away from the first elongate edge towards seal bead such that the winding bead and the seal bead overlap proximate the second elongate edge.

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