Access cover for mounting and removing filter element of filter assembly

Abstract

A cover (170) for a mechanical filter assembly (100) may include a first surface (210) including a first recessed surface (220); and a second surface (310) opposite the first surface (210), the second surface comprising a second recessed surface (320). The first recessed surface (220) may be configured to engage with a first end (250) of a first element (150) of the filter assembly (100). The second recessed surface (320) may be configured to engage with a second end (360) of a second element (160) of the filter assembly (100). The cover (170) may be configured to mount the first element (150) in the opening (140) of the filter assembly (100) and to remove the first element (150) from the opening (140). The cover (170) may be configured to mount the second element (160) in the opening (140) above the first element (150), and to remove the second element (160) from the opening (140).

Description

Technical Field

[0001] The present disclosure generally relates to a cover for a filter assembly, and for example, to a cover for installing and removing a filter element of a filter assembly. Background Art

[0002] A work machine may include a filter assembly. The filter assembly generally includes an air inlet configured to receive air (e.g., ambient air), a plurality of elements (or filter elements) configured to filter the air to obtain filtered air, and an air outlet configured to provide the filtered air to an engine of the work machine. The elements can be inserted into an opening in the filter assembly and can be covered by an access cover.

[0003] When the filter assembly is to be serviced or an element is to be replaced, the access cover can be removed. Typically, an individual (e.g., an operator, technician, and / or field personnel) will manually remove the access cover and remove the element. Manually removing the element is a difficult and time-consuming task due to the degradation of the sealing materials used with the filter assembly.

[0004] Typically, a sealing material (e.g., polyurethane) is provided around the outlet of the housing of the filter assembly. After a period of time, the heat and humidity of the operating environment (e.g., the construction environment) causes the sealing material to adhere to the outlet. Therefore, manually removing the element may require excessive force. However, the location of the filter assembly (on the operating machine) may prevent the application of excessive force. Therefore, the individual may need to carry tools for removing the element. In this regard, if the individual fails to carry tools, the operating machine may suffer unexpected downtime due to manually removing the element.

[0005] U.S. Patent No. 9,586,166 (the '166 patent) discloses an air cleaner assembly, a main filter element, a safety element, a combination, and a method for servicing the air cleaner assembly. The '166 patent further discloses that the air cleaner assembly includes an air cleaner housing and a main filter element. Additionally, the '166 patent discloses that the air cleaner housing includes a safety bushing that supports the main filter element and can be configured to help reduce the tendency of the main filter element to rotate during use of the air cleaner assembly. Furthermore, the '166 patent discloses that the air cleaner housing includes a main housing and an access cover.

[0006] Although the '166 patent discloses an air cleaner housing including a main housing and an access cover, the '166 patent does not disclose or suggest that the access cover addresses the aforementioned problems associated with removing a filter element from a filter assembly.

[0007] The disclosed access cover addresses one or more of the problems set forth above and / or other problems in the art. Summary of the Invention

[0008] In some embodiments, a cover for a filter assembly includes a first surface, the first surface including a first concave surface, wherein the first concave surface is configured to engage with a first end of a first element of the filter assembly; and a second surface opposite to the first surface, the second surface including a second concave surface, wherein the second concave surface is configured to engage with a second end of a second element of the filter assembly, wherein the cover is configured to install the first element in an opening of the filter assembly and remove the first element from the opening of the filter assembly when the first concave surface engages with the first end of the first element, and wherein the cover is configured to install the second element in the opening of the filter assembly above the first element and remove the second element from the opening of the filter assembly when the second concave surface engages with the second end of the second element.

[0009] In some embodiments, a method of using a cover for a filter assembly includes engaging a first surface of the cover with a first end of a first element of the filter assembly; after the first surface of the cover is engaged with the first end of the first element, using the cover to install the first element in an opening of the filter assembly or removing the first element from the opening; engaging a second surface of the cover with a second end of a second element of the filter assembly, wherein the second surface is opposite to the first surface; and after the second surface of the cover is engaged with the second end of the second element, using the cover to install the second element in the opening or removing the second element from the opening.

[0010] In some embodiments, a system includes: a filter assembly, the filter assembly including a first element and a second element; and a cover, the cover including: an outer surface, the outer surface including a first concave surface, wherein the first concave surface is configured to engage with the first end of the first element; and an inner surface, the inner surface including a second concave surface, wherein the second concave surface is configured to engage with the second end of the second element, wherein the cover is configured to remove the first element from the filter assembly when the first concave surface engages with the first end of the first element, and wherein the cover is configured to remove the second element from the filter assembly when the second concave surface engages with the second end of the second element. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a diagram of an example of a filter assembly described herein.

[0012] Figure 2 is a diagram of the examples described in this article.

[0013] Figure 3 is a diagram of the examples described in this article.

[0014] Figure 4 is a cross-sectional perspective view of the access cover and filter assembly described herein.

[0015] Figure 5 is a cross-sectional view of the access cover and filter assembly described herein.

[0016] Figure 6 is a flow chart of an exemplary process associated with installing and removing a filter assembly using an access cover. DETAILED DESCRIPTION

[0017] Embodiments described herein relate to a kind of inspection cover of the filter assembly for machinery.The inspection cover can be configured to operate as a tool for installing and removing the elements of the filter assembly.The element can be configured to be installed in the opening (or cavity) of the filter assembly.For example, the first element of the filter assembly can be installed in the opening, and the second element of the filter assembly can be installed in the opening above the first element.The inspection cover can be configured to install the element in the filter assembly and remove the element from the filter assembly.For example, the inspection cover can be used for (for example, in a first direction) to rotate and tighten the element in the filter assembly.On the contrary, the inspection cover can be used for (for example, in a second direction) to rotate and loosen the element in the filter assembly.

[0018] In some embodiments, a first surface (e.g., an outer surface) of the access cover can be configured to install a first element in and remove the first element from the opening of the filter assembly. A second surface (e.g., an inner surface) of the access cover can be configured to install a second element in and remove the second element from the opening of the filter assembly. The first element can be referred to as a safety element or a secondary element. The second element can be referred to as a primary element.

[0019] The first surface of the access cover may include a first concave surface. The end of the first element may include a protruding surface. The shape of the outer periphery of the first concave surface may correspond to the shape of the protruding surface of the end of the first element. For example, the shape of the outer periphery of the first concave surface may be the same as or substantially the same as the shape of the protruding surface of the first element.

[0020] When the first element is installed in the filter assembly or removed from the filter assembly, the first concave surface (of the first surface of the access cover) can engage with the protruding surface of the first element. In this regard, when the first element is installed, the access cover can be used to rotate (e.g., in a first direction) and tighten the first element in the filter assembly. Conversely, when the first element is removed, the access cover can be used to rotate (e.g., in a second direction) and loosen the first element in the filter assembly.

[0021] The second surface of the access cover may include a second concave surface. The end of the second element may include a protruding surface. The shape of the outer periphery of the second concave surface may correspond to the shape of the protruding surface of the end of the second element. For example, the shape of the outer periphery of the second concave surface may be the same as or substantially the same as the shape of the protruding surface of the second element.

[0022] When the second element is installed (above the first element) in the filter assembly or removed from the filter assembly, the second concave surface (of the second surface of the access cover) can engage with the protruding surface of the second element. In this regard, when the second element is installed, the access cover can be used to rotate (e.g., in a first direction) and tighten the second element in the filter assembly. Conversely, when the second element is removed, the access cover can be used to rotate (e.g., in a second direction) and loosen the second element in the filter assembly.

[0023] Thus, the access cover can be configured to operate as a tool for installing and removing components of the filter assembly. For example, a first surface of the access cover can be configured to operate as a first tool (e.g., a first wrench) for use in conjunction with a first component, and a second surface of the access cover can be configured to operate as a second tool (e.g., a second wrench) for use in conjunction with a second component.

[0024] The term "machine" may refer to a device that performs operations associated with an industry, such as mining, construction, agriculture, transportation, or another industry. Furthermore, one or more implements may be connected to the machine. For example, the machine may include a construction vehicle, work vehicle, or similar vehicle associated with the aforementioned industries.

[0025] Figure 1 is a diagram of an exemplary filter assembly 100 described herein. Figure 1 As shown in FIG, filter assembly 100 may include a housing 110, a filter element (the filter element includes a first element 150 and a second element 160), and an access cover 170, wherein the housing includes an air inlet 120, an air outlet 130, and an opening 140. In some embodiments, filter assembly 100 may be included in a machine and may be used in conjunction with the engine of the machine. For example, filter assembly 100 may be configured to filter air that will be provided to the engine during the combustion process. For example, filter assembly 100 may be used to filter pollutants, debris, and / or other impurities in the air using the filter element.

[0026] The air inlet 120 can be configured to receive air. The air can include ambient air. The air inlet 120 can be configured to direct the air to the opening 140 including the filter element. The first element 150 and the second element 160 can be configured to filter the air. In some cases, the air can move (e.g., rotate) around the filter element and the housing 110 during the filtering process.

[0027] like Figure 1 As shown in FIG, a first element 150 can be installed in the opening 140, and a second element 160 can be installed in the opening 140 above the first element 150. The first element 150 can serve as a safety element or secondary element for filtering air, while the second element 160 can serve as a primary element for filtering air. For example, in the event that the second element 160 is damaged by debris and / or experiences a malfunction due to debris, the first element 150 can provide additional filtering capacity. Thus, the first element 150 can prevent damage to the engine of the machine.

[0028] The filter element can filter the air to obtain filtered air. The filtered air can be provided to the air outlet 130. The air outlet 130 can be configured to provide filtered air to the engine as part of the combustion process.

[0029] Access cover 170 can be removably coupled to housing 110. As explained herein, access cover 170 can be configured to operate as a tool for installing and removing first element 150 and second element 160. Additionally, access cover 170 can prevent axial movement of second element 160, thereby preventing second element 160 from being removed from opening 140. Thus, access cover 170 can cause second element 160 to prevent axial movement of first element 150, thereby preventing first element 150 from being removed from opening 140.

[0030] As mentioned above, providing Figure 1 As an example. Other examples can be combined with Figure 1 The instances described are different.

[0031] Figure 2 is a diagram of Example 200 described herein. Figure 2 As shown in , the example 200 includes an access cover 170 and a first element 150. Figure 2 As shown in FIG, the access cover 170 may include a first surface 210. The first surface 210 may be an outer surface of the access cover 170. Figure 2 As shown in FIG, the first surface 210 may include a first concave surface 220. In some examples, the shape of the first outer perimeter 225 of the first concave surface 220 may be a polygon. Figure 2As shown in , the shape can be an octagon. Alternatively, the shape can be a triangle, a square, a rectangle, and / or another geometric shape with multiple edges, among other examples.

[0032] The first surface 210 may also include an additional concave surface 230 and a handle 240. The handle 240 may be referred to as a dust duct and may act as a dust duct during the air filtration process. Figure 2 As shown in , the shape of additional concave surface 230 can be circular. Alternatively, the shape of additional concave surface 230 can be triangular, square, rectangular, and / or another geometric shape with multiple edges, among other examples. In some cases, handle 240 can be used to apply a rotational force (e.g., a twisting force) to rotate access cover 170 in a first direction (e.g., clockwise) or in a second direction (e.g., counterclockwise). The rotational force can be used to install and / or remove first element 150 and second element 160.

[0033] like Figure 2 As shown in FIG, the first element 150 may include a first end 250 and a second end 260. The second end 260 may be opposite the first end 250 and may be located adjacent to the air outlet 130. The first end 250 may include a first protruding surface 255. The shape of the first outer perimeter 225 of the first concave surface 220 may correspond to the shape of the first protruding surface 255. For example, the shape of the first outer perimeter 225 may be similar to or identical to the shape of the first protruding surface 255. In some embodiments, the shape of the first outer perimeter 225 may be slightly larger than the shape of the first protruding surface 255 so that the first protruding surface 255 can fit (closely) within the first outer perimeter 225. In this regard, the first concave surface 220 of the access cover 170 may be configured to engage with the first protruding surface 255 of the first element 150.

[0034] When the first recessed surface 220 of the access cover 170 engages the first protruding surface 255 of the first element 150, the access cover 170 can be rotated in a first direction (e.g., using the handle 240) to install the first element 150 in the filter assembly 100. For example, the access cover 170 can be used to rotate (e.g., in the first direction) and tighten the first element 150 in the filter assembly 100 (e.g., in the opening 140). Conversely, the access cover 170 can be rotated in a second direction (e.g., using the handle 240) to remove the first element 150 from the filter assembly 100. For example, the access cover 170 can be used to rotate (e.g., in the second direction) and loosen the first element 150 in the filter assembly 100 (e.g., in the opening 140).

[0035] As mentioned above, providing Figure 2 As an example. Other examples can be combined with Figure 2The instances described are different.

[0036] Figure 3 is a diagram of Example 300 described herein. Figure 3 As shown in , example 300 includes an access cover 170 and a second element 160. Figure 3 As shown in FIG, the access cover 170 may include a second surface 310. The second surface 310 may be an inner surface of the access cover 170. Figure 3 As shown in , the second surface 310 may include a second concave surface 320. In some examples, the shape of the second outer perimeter 325 of the second concave surface 320 may be a polygon. Figure 3 As shown in , the shape can be an octagon. Alternatively, the shape can be a triangle, a square, a rectangle, and / or another geometric shape with multiple edges, among other examples.

[0037] The second surface 310 may further include an intermediate surface 330 and an inner protruding surface 340 surrounded by the intermediate surface 330. Figure 2 As shown in , the shape of the intermediate surface 330 can be circular. Alternatively, the shape of the intermediate surface 330 can be triangular, square, rectangular, and / or another geometric shape with multiple edges, among other examples. Similarly, the shape of the inner protruding surface 340 can be circular. Alternatively, the shape of the inner protruding surface 340 can be triangular, square, rectangular, and / or another geometric shape with multiple edges, among other examples.

[0038] like Figure 3 As shown in FIG, the second element 160 may include a first end 350 and a second end 360. The first end 350 may be opposite the second end 360 and may be located adjacent to the air outlet 130. The second end 360 may include a second protruding surface 365, a third protruding surface 370, and a third concave surface 375. The shape of the second outer perimeter 325 of the second concave surface 320 may correspond to the shape of the second protruding surface 365. For example, the shape of the second outer perimeter 325 may be similar to or identical to the shape of the second protruding surface 365. In some embodiments, the shape of the second outer perimeter 325 may be slightly larger than the shape of the second protruding surface 365 so that the second protruding surface 365 can fit (closely) within the second outer perimeter 325. In this regard, the second concave surface 320 of the access cover 170 may be configured to engage with the second protruding surface 365 of the second element 160.

[0039] When the second recessed surface 320 of the access cover 170 engages the second protruding surface 365 of the second element 160, the access cover 170 can be rotated in a first direction (e.g., using the handle 240) to install the second element 160 (above the first element 150) in the filter assembly 100. For example, the access cover 170 can be used to rotate (e.g., in the first direction) and tighten the second element 160 in the filter assembly 100 (e.g., in the opening 140). Conversely, the access cover 170 can be rotated in a second direction (e.g., using the handle 240) to remove the second element 160 from the filter assembly 100. For example, the access cover 170 can be used to rotate (e.g., in the second direction) and loosen the second element 160 in the filter assembly 100 (e.g., in the opening 140).

[0040] like Figure 3 As shown in , in some examples, the shape of the intermediate surface 330 of the second concave surface 320 can correspond to the shape of the third protruding surface 370 of the second element 160. For example, the shape of the intermediate surface 330 can be similar to or identical to the shape of the third protruding surface 370. Similarly, the shape of the inner protruding surface 340 of the second concave surface 320 can correspond to the shape of the third concave surface 375 of the second element 160. For example, the shape of the inner protruding surface 340 can be similar to or identical to the shape of the third concave surface 375.

[0041] In this regard, the third concave surface 375 of the second element 160 can be configured to engage the inner protruding surface 340 of the access cover 170. Thus, the inner protruding surface 340 can be configured to prevent axial movement of the second element 160.

[0042] Figure 4 FIG is a cross-sectional perspective view 400 of the access cover 170 and filter assembly described herein. Figure 4 As shown in FIG, a first element 150 can be installed in the opening 140 of the filter assembly 100, a second element 160 can be installed in the opening 140 of the air filter assembly 100 above the first element 150, and an access cover 170 can be coupled to the housing 110 above the second element 160. When coupled to the housing 110 in this manner, the access cover 170 can be configured to limit or prevent axial movement of the second element 160. Thus, the access cover 170 can be configured to prevent the second element 160 from being removed from the opening 140. In this regard, the access cover 170 can be configured so that the second element 160 limits or prevents axial movement of the first element 150, thereby preventing the first element 150 from being removed from the opening 140.

[0043] As mentioned above, providing Figure 4 As an example. Other examples can be combined with Figure 4 The instances described are different.

[0044] Figure 5 FIG is a cross-sectional view 500 of the access cover and filter assembly described herein. Figure 5 As shown in , first element 150 may be installed in opening 140 of air filter assembly 100 , second element 160 may be installed in opening 140 of air filter assembly 100 above first element 150 , and access cover 170 may be coupled to housing 110 above second element 160 .

[0045] like Figure 5 , the dimensions of the first concave surface 220 can be different from the dimensions of the second concave surface 320. For example, the dimensions of the second concave surface 320 can exceed the dimensions of the first concave surface 220. For example, the dimensions of the shape of the second outer perimeter 325 of the second concave surface 320 can exceed the dimensions of the shape of the first outer perimeter 225 of the first concave surface 220. In this regard, the first length of the second outer perimeter 325 of the second concave surface 320 exceeds the second length of the first outer perimeter 225 of the first concave surface 220.

[0046] like Figure 5 , the third concave surface 375 of the second element 160 can be configured to engage the inner protruding surface 340 of the second surface 310. Thus, the inner protruding surface 340 can be configured to limit axial movement of the second element 160. By limiting axial movement of the second element 160, the second surface 310 can be configured to prevent rotational movement of the second element 160 when the second surface 310 is engaged with the second end 360 of the second element 160.

[0047] Based on the limitation of the axial movement of the second element 160, the third concave surface 375 can be configured to limit the axial movement of the first element 150. For example, the third concave surface 375 can be configured to abut against the first end 250 to limit the axial movement of the first element 150.

[0048] As mentioned above, providing Figure 5 As an example. Other examples can be combined with Figure 5 The instances described are different.

[0049] Figure 6 is a flow chart of an exemplary process 600 associated with installing and removing a filter assembly using an access cover. In some embodiments, Figure 6 One or more process blocks of may be performed by an apparatus.

[0050] like Figure 6 As shown in FIG, process 600 may include engaging a first end of a first element of a filter assembly with a first side of a cover (block 610).

[0051] like Figure 6 As further shown in FIG. 6 , process 600 may include installing or removing the first element from the opening of the filter assembly using the cover after the first side of the cover is engaged with the first end of the first element (block 620 ).

[0052] like Figure 6 As further shown in FIG. 6 , process 600 may include engaging a second end of a second element of the filter assembly using a second side of the cover, wherein the second side is opposite the first side (block 630 ).

[0053] like Figure 6 As further shown in FIG. 6 , process 600 may include installing or removing the second component from the opening using the cover after the second side of the cover is engaged with the second end of the second component (block 640 ).

[0054] In some embodiments, installing or removing the first component in or from the opening using the cover includes rotating the cover in a first direction to install the first component in the opening and rotating the cover in a second direction to remove the first component from the opening.

[0055] In some embodiments, installing or removing the second component in or from the opening using the cover includes rotating the cover in a first direction to install the second component in the opening and rotating the cover in a second direction to remove the second component from the opening.

[0056] In some embodiments, the first side is an exterior surface of the cover and the second side is an interior surface of the cover.

[0057] In some embodiments, engaging the first end of the first element with the first side of the cover includes engaging the first end of the first element of the filter assembly with a concave surface of the first side, the shape of the outer periphery of the concave surface corresponding to the shape of the protruding surface of the first end of the first element, and the shape of the outer periphery of the concave surface is a polygon.

[0058] In some embodiments, engaging the second end of the second element with the second side of the cover includes engaging the second end of the second element with a concave surface of the second side, the shape of the outer periphery of the concave surface corresponding to the shape of the protruding surface of the second end of the second element, and the shape of the outer periphery of the concave surface is a polygon.

[0059] although Figure 6 Example blocks of process 600 are shown, but in some implementations, Figure 6 Process 600 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in . Additionally or alternatively, two or more blocks of process 600 may be performed in parallel.

[0060] Industrial Applicability

[0061] Embodiments described herein relate to an access cover for a filter assembly of a machine. The access cover can be configured to operate as a tool for installing and removing elements of the filter assembly. The element can be configured to be installed in an opening (or cavity) of the filter assembly. The access cover can be configured to install the element in the filter assembly and remove the element from the filter assembly. For example, the outer surface of the access cover can be used to install or remove a first element (e.g., a safety element or a secondary element) of the filter assembly. The inner surface of the access cover can be used to install or remove a second element (e.g., a main element) of the filter assembly.

[0062] Thus, the access cover described herein eliminates the need for an individual (e.g., an operator, technician, field personnel) to carry tools to remove and / or install components in a filter assembly. In this regard, the access cover can prevent any unplanned downtime of machinery caused by an individual's failure to carry tools to service or replace a filter assembly.

[0063] The foregoing disclosure provides illustrations and descriptions, but is not intended to be exhaustive or to limit the embodiments to the precise forms disclosed. Modifications and variations may be made in light of the foregoing disclosure or may be acquired from practice of the embodiments. In addition, any embodiments described herein may be combined unless the foregoing disclosure explicitly provides reasons why one or more embodiments may not be combined. Even though particular combinations of features are listed in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various embodiments. Although each dependent claim listed below may be directly dependent on only one claim, the disclosure of the various embodiments includes each dependent claim in combination with every other claim in the claim set.

[0064] As used herein, "a, an" and "group" are intended to include one or more items and can be used interchangeably with "one or more". In addition, as used herein, the article "the" is intended to include one or more items cited in conjunction with the article "the" and can be used interchangeably with "one or more". In addition, the phrase "based on" is intended to represent "at least partially based on", unless otherwise explicitly stated. In addition, as used herein, the term "or" is intended to be inclusive when used in series form and can be used interchangeably with "and / or", unless otherwise explicitly stated (for example, if used in combination with "either" or "only one"). In addition, for ease of description, spatial relative terms such as "below", "down", "above", "upper", etc. can be used herein to describe the relationship between an element or feature and another one or more elements or features, as shown in the figure. In addition to the orientation shown in the figure, spatial relative terms are intended to cover the different orientations of the device, equipment and / or element in use or operation. The device can be oriented in addition (rotated 90 degrees or with other orientations), and the spatial relative descriptors used herein can be interpreted accordingly.

Claims

1. A cover (170) for a filter assembly (100), the cover (170) comprising: a first surface (210), the first surface comprising a first concave surface (220), wherein the first concave surface (220) is configured to engage a first end (250) of a first element (150) of the filter assembly (100); as well as a second surface (310) opposite to the first surface (210), the second surface comprising a second concave surface (320), wherein the second concave surface (320) is configured to engage a second end (360) of a second element (160) of the filter assembly (100), wherein the cover (170) is configured to install the first element (150) in the opening (140) of the filter assembly (100) and remove the first element (150) from the opening (140) of the filter assembly (100) when the first concave surface (220) engages the first end (250) of the first element (150), and wherein the cover (170) is configured to install the second element (160) in the opening (140) of the filter assembly (100) above the first element (150) and remove the second element (160) from the filter assembly (100) when the second concave surface (320) engages the second end (360) of the second element (160).

2. The cover (170) of claim 1, wherein the first surface (210) is an outer surface of the cover (170), and The second surface (310) is the inner surface of the cover (170).

3. The cover (170) of claim 1, wherein the shape of the outer periphery (225) of the first concave surface (220) corresponds to the shape of the protruding surface (255) of the first end (250) of the first element (150), and The first concave surface (220) is configured to engage with the protruding surface (255).

4. The cover (170) of claim 1, wherein the shape of the outer periphery (225) of the second concave surface (320) corresponds to the shape of the protruding surface (255) of the second end (360) of the second element (160), and The second concave surface (320) is configured to engage with the protruding surface (255).

5. The cover (170) of claim 1, wherein the second concave surface (320) is configured to prevent rotational movement of the second element (160) when the second concave surface (320) engages the second end (360) of the second element (160).

6. The cover (170) of claim 1, wherein the second surface (310) further comprises a protruding surface (340) configured to engage a third concave surface (375) of the second element (160), and wherein the cover (170) is configured to prevent axial movement of the second element (160) when the second concave surface (320) engages the second end (360) of the second element (160) and when the protruding surface (340) engages the third concave surface (375) of the second element (160).

7. The cover (170) of claim 1, wherein the cover (170) is configured such that the second element (160) prevents axial movement of the first element (150) within the second element (160).

8. A method of using a cover (170) for a filter assembly (100), the method comprising: engaging a first end (250) of a first element (150) of the filter assembly (100) with a first surface (210) of the cover (170); After the first surface (210) of the cover (170) is engaged with the first end (250) of the first element (150), installing the first element (150) in the opening (140) of the filter assembly (100) using the cover (170) or removing the first element (150) from the opening (140); using the second surface (310) of the cap (170) to engage the second end (360) of the second element (160) of the filter assembly (100), wherein the second surface (310) is opposite to the first surface (210); as well as After the second surface (310) of the cover (170) is engaged with the second end (360) of the second element (160), the second element (160) is installed in the opening (140) or removed from the opening (140) using the cover (170).

9. The method of claim 8, wherein installing the first element (150) in the opening (140) or removing the opening (140) from the second element (160) using the cover (170) comprises: rotating the cover (170) in a first direction to install the first element (150) in the opening (140); as well as The cover (170) is rotated in a second direction to remove the first element (150) from the opening (140).

10. The method of claim 8, wherein installing the second element (160) in the opening (140) or removing the second element (160) from the opening (140) using the cover (170) comprises: rotating the cover (170) in a first direction to install the second element (160) in the opening (140); as well as The cover (170) is rotated in a second direction to remove the second element (160) from the opening (140).

11. The method of claim 8, wherein the first surface (210) is an inner surface of the cover (170), and The second surface (310) is the outer surface of the cover (170).

12. The method of claim 8, wherein engaging the first end (250) of the first element (150) with the first surface (210) of the cover (170) comprises: engaging a first end (250) of a first element (150) of the filter assembly (100) using a concave surface (220) of the first surface (210), wherein the shape of the outer periphery (225) of the concave surface (220) corresponds to the shape of the protruding surface (255) of the first end (250) of the first element (150), and The shape of the outer periphery (225) of the concave surface (220) is polygonal.

13. The method of claim 8, wherein engaging the second end (360) of the second element (160) with the second surface (310) of the cover (170) comprises: using the concave surface (320) of the second surface (310) to engage with the second end (360) of the second element (160), wherein the shape of the outer periphery (325) of the concave surface (320) corresponds to the shape of the protruding surface (340) of the second end (360) of the second element (160), and The shape of the outer periphery (325) of the concave surface (320) is polygonal.

Images