• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    CORRUGATED SEALING SEAL FOR FILTER ELEMENT A filter module includes a filter element with a filter media inlet ring and a ring end cap. The end cap includes an annular body with a sealing member located around a surface of the body circumscribing a central opening, wherein the sealing member has a repeated, wavy, non-flat geometry. The axial, distal end of the annular body also has a repeated, wavy, non-flat geometry, corresponding to the geometry of the sealing member, and may have one or more handles that project axially outwardly from the distal end, positioned in a point of maximum amplitude of the distal end, and which are received in auxiliary slots formed in a fit of the diaphragm, to facilitate the positioning and installation of the element inside the module. The fitting includes an outer wall having a corresponding non-flat geometry that receives and seals the sealing member in the end cap.
    公开号:BR112013016492B1
    申请号:R112013016492-1
    申请日:2012-01-10
    公开日:2021-01-12
    发明作者:Daniel P. Rapin
    申请人:Parker-Hannfin Corporation；
    IPC主号:
    专利说明:

    [0001] The present invention relates, in general, to filter elements and filter modules, and to the interface between the element and a corresponding fitting component.
    [0002] In some filtration applications, a replaceable filter element has an end cap that is attached to the head of a filter module. The module includes a canister that receives the element, and inlet and outlet holes in the head that direct fluid in and out of the module. The fluid passes through the filter element, which separates particles and other contaminants from the fluid which is then returned to the operating system. For the filter element to function properly and not leak, an effective seal must be maintained on the filter head. Typically, hydraulic filter elements use an O-ring supported along a plane in a straight or radial gasket design. An inclined or angled seal gasket design was used, for example, as shown in US Patent 7,494,017 for "Filter Element with Off-Axis End Cap", issued to the assignee of the present invention. Summary of the invention
    [0003] A filter element is provided that includes an end cap having an annular body defining an opening in a central cavity of the element, and a sealing member circumscribing the body. According to one embodiment, the sealing member is located in a groove formed along a radially external surface of the annular body, and has a non-flat geometry such as a wavy, repeated geometry with several lobes.
    [0004] An axial, distal end of the end cap of the filter element also has a non-flat geometry, substantially equaling the geometry of the sealing member.
    [0005] The annular body of the filter element is received closely within a socket formed in a diaphragm on the head of the filter module, with the distal end of the end cap body being leveled to a complementary undulating surface along an internal shoulder of the socket . The fitting has an outer wall with a wavy end surface that fits the sealing member, and an axial extension such that the wall sufficiently covers the sealing member around the entire circular extension of the end cap to provide an impermeable seal. the fluid between the annular body of the filter element and the diaphragm.
    [0006] The undulating geometry of the distal end of the end cap can have an amplitude, chosen so that when the element and the diaphragm are misaligned, sufficient clearance is provided to prevent the canister from being fully threaded on the head; or, if the clearance is large enough, even to prevent the threads in the canister and the head from getting tangled. In other words, the canister cannot be properly threaded on the head when the element is out of rotational alignment with the diaphragm, since the expanded element / diaphragm interface prevents the canister from being tightened. This can provide a visual suggestion that the element is not properly located within the module, or that an incorrect element is present.
    [0007] The annular body may have one or more flaps that project axially outwardly from the distal end, which can be positioned at the points of maximum amplitude of the distal end. The flaps along the distal end of the end cap body are received in slots in the groove of the groove, which can be positioned at points of minimum amplitude along the surface of the groove. Alternatively, the flaps and slits can be reversed, with the flaps in the diaphragm and the slits in the end cap.
    [0008] In one way or another, the flaps and slits facilitate the positioning and installation of the element in the socket.
    [0009] Advantages of the present invention include good seal retention in the undulating groove of the end cap; quick phase fitting between end cap and fitting during assembly; and a solid, effective seal between the end cap and the socket even under high differential pressures across the plugged media. Brief description of the drawings
    [0010] Figure 1 is a cross-sectional side view of a filter module according to the present invention, with the valve assembly in an open condition; Figure 2 is an elevated perspective view of a filter element for the module of Figure 1 with the sealing member removed for clarity; Figure 3 is a side view of a portion of the filter element and the upper end cap, the element and the end cap having the same appearance when rotated in subsequent ninety degree increments; Figure 4 is a top plan view of the filter element; Figure 5 is a perspective view of the bottom of the diaphragm; Figure 6 is a perspective view of the upper part of the diaphragm; Figure 7 is a side view of the diaphragm; Figure 8 is a cross-sectional side view of the diaphragm, taken substantially along the plane defined by lines 8-8 in Figure 6; Figure 9 is a plan view of the bottom of the diaphragm; Figure 10 is an elevated perspective view showing a portion of the element mounted with the diaphragm; Figure 11 is a schematic cross-sectional side view of the element and the diaphragm, taken substantially along the plane defined by lines 11-11 of Figure 10; Figure 12 is a side view of a portion of the filter element and the upper end cap, according to a second embodiment of the present invention; Figure 13 is a perspective view of the bottom of the diaphragm, according to a second embodiment; Figure 14 is a side cross-sectional view of the filter module of Figure 1, illustrating the valve assembly when the canister is removed; and; Figure 15 is a side perspective view of the filter element and the diaphragm, illustrating the element and the rotating diaphragm non-aligned with each other; Detailed description of the invention
    [0011] With reference to the Figures, and initially to Figure 1, a filter module constructed in accordance with the present invention is shown as a whole at 20. The filter module 20 can be used in various applications, for example, hydraulic filter applications, where it is necessary or desirable to remove particles and / or other contaminants from a flow of hydraulic fluid. Module 20 generally includes a head assembly, indicated generally by 24, a bowl or canister in the shape of a bowl, indicated generally by 28, and a filter element, indicated generally by 30, which is received and supported in bowl 28 and removes contaminants and particles in the fluid flow as it passes through it.
    [0012] The module head assembly 24 includes a body 34 with an inlet port 36 that can be connected to receive fluid from the system to be filtered, and an outlet port 38 that can be connected to direct the filtered fluid back into the system . The inlet port 36 directs the fluid entering an inlet cavity 40 in the body where it can pass to a peripheral region 41 between the outside of the element and the inside of the canister, as will be described in more detail below. The body 34 can be formed into one or more pieces from any material suitable for the specific application, such as metal; in any appropriate manner such as die casting and / or machining.
    [0013] The canister 28 includes a side wall 44, a closed end 46, and an open end 48. The open end 48 of the canister has a 50-threaded outer portion that cooperates with a threaded inner portion 52 of the head 34 body. filter to allow the canister to be screwed and unscrewed from the head. Canister 28 can similarly be formed into one or more pieces from any material suitable for the specific application, such as metal; in any appropriate manner such as die casting and / or machining. A suitable seal such as at 54, supported within a groove in a seating area 55 of the body 34, can be provided between the canister 28 and the body 34 to ensure a liquid impermeable connection when the canister and the body are assembled together .
    [0014] Head assembly 24 may further include a valve assembly, as in 58. Valve assembly 58 includes a diaphragm member 59, and a compression spring 60 that extends between diaphragm member 59 and an upper, inner surface cavity 40. Diaphragm member 59 is slidably supported on an adapter 61; which in turn is retained within a neck portion 62 of body cavity 40 by cooperating threaded portions or other fastening techniques.
    [0015] Suitable O-ring seals such as 64 are provided between adapter 61, diaphragm member 59 and body 34 as appropriate to prevent leakage of fluid between them. Diaphragm member 59 is normally supported in an open position away from the open distal end 48 of the canister when a filter element 30 is located inside the canister, and the canister is completely threaded on the filter head, as shown in Figure 1, to allow fluid to flow from inlet 36 to peripheral region 41 of the canister.
    [0016] Valve assembly 58 further includes a seal assembly 65 supported on the inner side of the lower inner end of the adapter. The seal assembly 65 includes a stop collar 66, an O-ring seal supported around the periphery of the collar 66 and providing a seal against the surrounding adapter, and the pin 69 that holds the entire collar 66 inside the adapter. Diaphragm member 59 is similarly retained in a position separate from the seal assembly due to engagement by the upper end cap of the filter element when the canister is fully threaded on the filter head, to allow fluid to pass out of the canister and is directed to outlet hole 38.
    [0017] If the canister is removed in order to access and replace a used filter element, the diaphragm member 59 is tensioned by compression spring 60 downwards and internally within the seating area 55 of the body 34 in a sealed and closed position in by virtue of the seal 54, as shown in Figure 14. As the diaphragm member 59 moves to the closed position, an internal annular shoulder 70 of the diaphragm member simultaneously engages the seal assembly 65 and seals it. Thus, as should be clear, valve assembly 58 completely closes the open end of the filter head when the canister is removed, to prevent fluid from leaking from the head assembly.
    [0018] Referring now to Figure 2, the filter element 30 includes a filter media input ring 71 circumscribing a central geometry axis and defining a central cavity 72, an upper end cap 73 at one end of the filter media ring, and a lower end cap 74 at the opposite end of the filter media ring. The filter media inlet ring 71 may be formed of any material suitable for the specific application, and may be formed in any appropriate manner, such as bending. In some hydraulic filtration applications, the filter media ring will include a multi-layered folded structure including a central perforated support core 75 and an external support mesh 76, for additional media support during high pressure differentials and during flow. End caps 73, 74 can similarly be formed into one or more pieces of any material suitable for the specific application, for example, a hard, strong, chemically resistant polymer, and formed using any appropriate technique, such as molding.
    [0019] With reference now also to Figures 3 and 4, the upper end cap 73 includes an annular body 78 circumscribing a central opening 79 within the cavity 72 of the filter element. The body 78 includes a channel 80 (Figure 1) at an inner end, which receives the end of the filter media inlet ring 72 and the support core 75. The end cap 73 is fixed appropriately, either by adhesive or by a filling compound for the filter media inlet ring 72. The end cap 73 further includes an enlarged annular base 81 having a series of centering flaps projecting radially outwards as in 82, spaced evenly around the peripheral circumference of the end cap and extending axially along the extension of the annular base 81. The flaps 82 provide clearance for clearance between the end cap 73 and the inner surface of the canister 44 to properly orient and center the element when the element is located inside the canister (see Figure 1); while allowing fluid flow through the inlet 36 through the gaps between the flaps in the peripheral region 41. Although four flaps like this are illustrated, the number, geometry and spacing of the flaps can vary, as should be appreciated.
    [0020] The end cap body 78 further includes an outer annular surface 84 having a groove or groove 86. The groove 86 may have a smoothly wavy, non-flat geometry, for example, of a generally sinusoidal shape, repeating around the circumference of the body. The slot 86 may have a number of lobes equally spaced around the circumference of the body, i.e., wave peaks or places of maximum amplitude, around the circumference of the body. Four lobes like this are illustrated in Figure 2, however, the number, spacing and geometry of the lobes can vary, as can the wavy geometry of the groove, as will be explained below. Only a single lobe may be required in certain applications.
    [0021] As shown in Figure 3, a sealing member 90 is located in the groove 86 and substantially assumes the geometry of the groove. The sealing member 90 may be a standard elastomeric O-ring, although more complicated structures, such as an undulating shape that substantially matches the shape of the groove, can also be used. The sealing member can have a diameter substantially equal to the width of the groove 86; while the groove depth is slightly shallower, so that the sealing member protrudes slightly out of the groove to seal an opposite surface. The sealing member has a diameter such that it stretches slightly when it is installed inside the groove, to facilitate retention.
    [0022] Alternatively, the sealing member 90 can be formed unitarily with the end cap, incorporating, for example, a resilient or flexible sealing material within the mold for the end cap. In this case, of course, only the sealing member will have the shape of undulation described above and there would be no separate groove. In addition, as described above, the gasket is located at the diameter of the end cap body 78, which provides good retention for the O-ring during replacement operations. Alternatively, the seal can also be supported internally from the body 78 such as in a groove or channel. The reasons for the location and geometry of the sealing member will be further described below.
    [0023] The distal outer end 92 of the body 78 runs close to the groove 86 (or sealing member 90) and may have a similar geometry. That is, the outer end 92 may have an edge or surface with the same wavy, non-flat geometry, described above with respect to groove 86 (and sealing member 90), in phase and with the same amplitude.
    [0024] Referring now to Figures 5-8, the diaphragm member 60 for valve assembly 58 is illustrated, and includes an annular body 100 surrounding a central passage 101, and including a fitting portion generally indicated by 102 and a portion of valve generally indicated by 104. The valve portion 104 of the diaphragm includes an enlarged annular flange 105 circumscribing the body 100 and spaced from it to define an internal annular groove or groove 106 sized to receive the end of the compression spring 60. The lower annular shoulder of the flange 105 forms a valve member, which, as described above, is sealed against the seal 54 when the canister is removed from the head and the diaphragm member slides inside the body 34 due to the compression spring 60 Flange 105 may have chamfers leading inwards at the upper and lower outer edges of the flange to facilitate movement of the diaphragm member within the body 34 and seal 54. An annular sleeve 110 protrudes axially upwards from the body 100 and is dimensioned to receive the adapter 61 in a sliding manner, as in Figure 1.
    [0025] The lower engaging portion 102 of the diaphragm includes an outer annular wall 112 that projects downwardly from the body 100 and ends at a distal end 113; and an internal annular shoulder 114, circumscribing the inside of the wall and facing the lower outer end of the diaphragm. The shoulder 114 has a smoothly wavy, non-flat geometry, of a generally sinusoidal shape, which is repeated around the circumference of the body, and which substantially corresponds to the wavy geometry of the distal end 92 of the end cap body 78, for that the end cap body may be located in substantial surface engagement with a surface against the shoulder, as shown in Figure 11. As with the end cap body, the shoulder 114 may have several equally spaced lobes as in 115, that is, wave peaks, around the circumference of the body. The number, spacing and geometry of the lobes can vary depending on the corresponding lobes formed in the end cap to achieve a level, surface-to-surface engagement, allowing rapid rotational alignment of the end cap relative to the socket.
    [0026] The annular wall 112 receives near the body 78 of the end cap, and may have a chamfer which leads inwards to facilitate insertion on the sealing member 90 in the end cap. The distal end 92 of end cap 73 may likewise have a chamfer leading inward to facilitate assembly with the diaphragm member. The distal end 113 of the wall may also have the repeated, undulating, non-flat geometry that corresponds to the geometry of the shoulder 114, including corresponding to the phase and amplitude undulations and having lobes 116 substantially engaging the lobes 115 on the shoulder 114. The wall 112 has an axial extension sufficient to cover at least a major portion of the sealing member 90, that is, it extends at least sufficiently through the sealing member 90 to prevent leakage of fluid between the end cap and the diaphragm when the end cap tip is properly rotated in the diaphragm. Figure 10, for example, illustrates wall 112 having an axial extension that completely covers sealing member 90 and groove 86 when the end cap and diaphragm are in phase with each other.
    [0027] When the element is suitably in phase with the diaphragm engagement, so that the opposing undulating surfaces of the cap end edge 92 and the shoulder 114 are in a surface-to-surface engagement, in phase with each other, the side wall 112 seals the entire length of the sealing member 90 and a fluid impermeable seal is provided between the end cap and the diaphragm. The interface establishes a linear load path between components installed during high compression states encountered during high differential pressure conditions. Conversely, with reference to Figure 15, if the element 30 is out of phase with the socket 102, the sealing member 90 will not effect a complete seal against the internal surface of the socket, and a leakage path will form. Complementary geometries increase the positive engagement between the element end cap and the diaphragm, improve the structural properties of the element end cap and diaphragm during highly loaded conditions, and assist in the element assembly process. The tilt of the lobes in the multi-lob design provides a good phase fit between the element end cap and the diaphragm during element replacement.
    [0028] When replacing the element, a new element can be located in any rotation direction in the canister, and the canister is then threaded into the filter head. Referring again to Figure 1, while the canister is being tightened, the end cap 73 of the element fits into the diaphragm and the valve assembly and pushes them upwards, receiving a resistance from the compression spring 60. The compression spring loads the element axially and causes the element to rotate in a neutral position, or, in other words, to a position where the opposite surfaces of the edge cap 92 edge and inner shoulder 114 are in phase and in surface to surface alignment. As should be appreciated, with the illustrated four-lobed design, the element only needs to be rotated by ninety degrees until the opposite surfaces of the end cap edge 92 and the shoulder 14 are level. If a design with two lobes is used, the element would be rotated one hundred and eighty degrees to accommodate itself appropriately. A single-lobe design would require a rotation of up to three hundred and sixty degrees to accommodate itself properly. The appropriate rotation for other lobe designs can be calculated easily. It is observed that non-planar geometries other than a lobe design could alternatively, or additionally, be used to cause the element to be properly indexed and aligned with respect to the diaphragm. After the element is properly oriented radially, the canister can be fully threaded on the filter head and the system returns to operation.
    [0029] The undulating geometry of the distal end 92 of the end cap 73 can be considered to have an amplitude along the axial direction, from a minimum amplitude "A" closest to the base 81 - up to a maximum amplitude "B" at the most away from the base, as illustrated in Figure 3. The undulating geometry of the groove 86, and therefore of the seal 90, likewise has the same maximum and minimum amplitudes. The amplitude and dimensions of the element and the canister can be chosen so that when the element and the diaphragm are misaligned, sufficient clearance is provided to prevent the canister from being fully threaded on the head; or, if the gap is large enough, even to prevent the threads in the canister and the head from getting tangled. In other words, the canister cannot be properly threaded on the head when the element is out of rotational alignment with the diaphragm, since the expanded element / diaphragm interface prevents the canister from being tightened. If the geometry of the end cap and canister are chosen appropriately to create a gap like this, this can provide a visual clue that the element is not properly located within the module, or that an incorrect element is present. Figure 3 illustrates an amplitude in which the lowest point of the distal end, in the depression of their respective lobes, is on the same plane as the highest point of the groove, at the apex of their respective lobes (that is, an imaginary plane perpendicular to the axis the element would cross these points); however, as should be appreciated, this can vary depending on the particular dimensions and geometry of the element and the canister.
    [0030] To facilitate installation and location of the element, a series of keyway flaps 119 can optionally be provided around the end 92 of the end cap. The flaps 119 protrude axially outwardly, away from the end of the body 78 of the end cap, and may also have a chamfer that leads inward to facilitate assembly with the diaphragm member. As shown in Figures 2-4, each flap can be located generally at the apex of a lobe, or point of maximum amplitude, and as such they are also generally evenly spaced around the end cap. Flaps 119 can be formed unitary (in one piece) with the end cap, or they can be formed as separate part (s) and are attached (with adhesive, for example) or otherwise supported against the end cap. far end.
    [0031] The diaphragm may similarly optionally include a series of slits as in 120 formed in the shoulder 114 of the diaphragm. Slits 120 are formed at the minimum amplitude points of the boss, or, in other words, at the low point of the boss's wave geometry. The slots are dimensioned to receive the keyway flaps 119 in the end cap, to facilitate the location of the end cap appropriately in phase with the fit. Four slots 120 are illustrated, which will receive four flaps 119 from the end cap - however, the location, geometry and number of flaps and slots may vary. When the element is properly rotated with respect to the socket and is in phase with it, the flaps are received inside the slots and the element fits firmly inside the socket ensuring an effective fit, as shown in Figure 11. Again, in this case the the outer wall 120 of the housing covers the sealing member 90, and a fluid impermeable seal is provided between the end cap and the diaphragm.
    [0032] When the end cap is out of phase in relation to the socket (Figure 15), the tabs 119 on the end cap move against the surface of the diaphragm shoulder 114. This creates an even greater gap between the end cap of the element and the diaphragm, thus making it even easier to prevent the canister from being properly threaded on the head, and thus further facilitating the visual inspection of the filter assembly for an incorrect element.
    [0033] As indicated above, the sealing member 90 on the end cap can similarly be located along the inside diameter of the end cap body 78. In that case, the socket 60 can have a wall configured to fit centrally within the end cap. - instead of having a central cavity receiving the end cap. The rest of the fitting, such as the shoulder, flaps and slits can be the same as in the modality described above, to ensure a solid, fluid impermeable seal between the end cap and the fitting, and to facilitate assembly and the installation. In addition, it should be noted that the fitting and end cap are described above as having complementary annular or circular configurations. It is possible that these members could have cooperating configurations that were not round, such as oval, star-shaped, square, etc.
    [0034] Another embodiment of the present invention is illustrated in Figures 12 and 13. In this embodiment, the keyway flaps are indicated at 130, and are in turn provided within the fitting portion 102 of the diaphragm member, while the receiving slots, indicated at 132, are located at end 92 of the end cap. The diaphragm and the element fit together in the same way and are in other aspects same as described previously.
    [0035] As will be appreciated from the above, some advantages of the present invention include good seal retention in the undulating groove of the end cap; quick phase coupling between end cap and socket during assembly; and a solid, effective seal between the end cap and the socket even during high differential pressures through plugged means.
    [0036] The principles, preferred modalities and modes of operation of the invention that are intended to be protected here should not, however, be interpreted as limited to the particular form described since it should be considered illustrative and not restrictive. Variations and changes can be made by those skilled in the art without departing from the scope and spirit of the invention as shown in the appended claims.
    权利要求:
    Claims (13)
    [0001]
    Filter element (30) including a filter media inlet ring (71) circumscribing a central geometry axis and defined a cavity (72), and an end cap (73) at one end of the filter media inlet ring (71); the end cap (73) including a body (78) defining an opening (79) in the cavity (72) and having a distal outer end (92) with a non-flat geometry, and further including a sealing member (90) along a radially external surface (84) of the body (78), the sealing member (90) also having a non-flat geometry around the distal end of the end cap body (78), FEATURED by the fact that the distal outer end (92) of the end cap body (78) has a wavy and repeated axial amplitude around the body.
    [0002]
    Filter element (30) according to claim 1, CHARACTERIZED by the fact that the geometry of the outer end (92) includes multiple lobes evenly spaced around the body (78).
    [0003]
    Filter element (30) according to any one of the preceding claims, CHARACTERIZED by the fact that the sealing member (90) has a wavy axial amplitude repeated around the outside diameter of the body (78).
    [0004]
    Filter element (30) according to any one of the preceding claims, CHARACTERIZED by the fact that the geometry of the sealing member (90) corresponds to the geometry of the distal end (92) of the body (78).
    [0005]
    Filter element (30) according to any one of the preceding claims, CHARACTERIZED by the fact that the body (78) includes a groove (86) extending around the outer radial surface (84) of the body (78), the groove (86) having a non-flat, undulating geometry, and the sealing member (90) is located within the groove (86).
    [0006]
    Filter element (30) according to any one of the preceding claims, CHARACTERIZED by the fact that the distal end (92) of the body (78) has multiple axial wings (119), each wing being located at a point of maximum amplitude at the distal end (92).
    [0007]
    Filter element (30) according to any one of claims 1 to 5, CHARACTERIZED in that the distal end (92) of the body (78) has multiple slits (132) extending axially inward from the distal end (92), each slot (132) being located at a point of maximum amplitude at the distal end (92).
    [0008]
    Filter module (20), FEATURED by the fact that it includes a filter head (24) and a canister (28) removably connected to the head (24), and a filter element (30), as defined in any of the claims 1 to 5, located inside the canister (28).
    [0009]
    Filter module (20) according to claim 8, CHARACTERIZED by the fact that the filter head (24) includes a diaphragm (59) having a fitting (60) dimensioned to receive the body (78) of the cover end (73), with the sealing member (90) in the body (78) providing a fluid impermeable seal between the end cap (73) and an inner surface of a wall (112) of the housing (60).
    [0010]
    Filter module (20), according to claim 9, CHARACTERIZED by the fact that the fitting (60) of the diaphragm (59) also includes an internal shoulder (114) also presenting a wavy, non-flat geometry, corresponding to the geometry the distal end (92) of the end cap body (78) so that the distal end of the end cap body fits in a surface-to-surface relationship with the shoulder of the socket (60).
    [0011]
    Filter module (20) according to claim 10, CHARACTERIZED by the fact that the outer distal end (92) of the annular body (78) of the filter element (30) has a series of flaps protruding axially outwardly from the distal end (92), located at points of maximum amplitude at the distal end (92), and the shoulder (114) of the diaphragm socket (60) includes corresponding slits (120) sized to receive the flaps (119), in corresponding points of minimum amplitude in the boss (114).
    [0012]
    Filter module (20) according to claim 10, CHARACTERIZED by the fact that the shoulder (114) of the diaphragm socket (60) includes a series of flaps (130) projecting axially outwardly from the internal shoulder and the outer distal end (92) of the body (78) of the filter element (30) has a series of slits (132), in which the flaps (130) of the diaphragm fitting (60) are sized to be received in the slits ( 132) of the body (78).
    [0013]
    Filter module (20), according to claim 10, CHARACTERIZED by the fact that the fitting (60) has an external wall (112) with an axial distal end (113) also presenting a wavy, non-flat geometry, corresponding to the shoulder geometry (114) and projecting an axial extension sufficient to seal the sealing member (90) around the entire circular body extension (78) of the end cap (73) when the body (78) the end cap (73) is received within the socket.
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    同族专利:
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    ES2576954T3|2016-07-12|
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    AU2016225954B2|2017-11-30|
    EP3064261B1|2017-07-19|
    AU2012207592A1|2013-07-18|
    EP2665535B1|2016-04-20|
    AU2016225954A1|2016-09-29|
    AU2012207592B2|2016-10-06|
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    US20120181224A1|2012-07-19|
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    法律状态:
    2018-04-03| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-07-09| B06T| Formal requirements before examination|
    2020-04-28| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2020-12-01| B09A| Decision: intention to grant|
    2021-01-12| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 10/01/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201161433611P| true| 2011-01-18|2011-01-18|
    US61/433,611|2011-01-18|
    PCT/US2012/020697|WO2012099742A1|2011-01-18|2012-01-10|Filter element wave gland seal|
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