Filter interconnects utilizing correlated magnetic actuation to implement downstream system functionality

Abstract

A filtration system interconnection structure includes a filter manifold and a filter cartridge. The filter manifold includes a reservoir housing and a first associated magnet located on or connected to a portion of the manifold. The filter cartridge includes a filter medium, a first end cap and a second end cap sealed to the filter medium, and a second pair of associated magnets located on or connected to the filter cartridge housing body. When the filter cartridge is inserted into the reservoir housing, the first and second associated magnets are connected to each other via magnetic communication, and when the filter cartridge is moved to an alignment position, the associated magnets located on or connected to the manifold are allowed to translate due to magnetic communication. The polarity distribution of the paired associated magnets is aligned, such that a repulsive force is generated when the filter cartridge is inserted into the manifold reservoir housing.

Description

[0001] This application is a divisional application of PCT international invention patent application No. 202080035813.8, filed on May 18, 2020, entitled "Filter interconnection for realizing downstream system functions using related magnetic actuation". Technical Field

[0002] This invention relates to an interconnection scheme between a filter cartridge and its corresponding manifold. The invention utilizes an associated magnetic design incorporating associated magnets, and more specifically, introduces magnetic attraction, repulsion, or a combination thereof to generate shear forces when the filter cartridge is inserted into the mating manifold to aid in the interconnection. In an exemplary aspect, the interconnection scheme utilizes magnetic repulsion to assist in the installation and / or removal of the filter cartridge. The associated magnetism in this invention functions in at least two ways: first, during the initial installation of the filter cartridge into the mating manifold, actuates the upstream valve via non-electronic and non-contact actuation of a switch; second, during rotation, it introduces a magnetic repulsive force to aid in the removal of the filter cartridge from the manifold. Background Technology

[0003] A related magnet design is described in U.S. Patent No. 7,800,471, entitled "Field Emission System and Method," granted to Cedar Ridge Research LLC on September 21, 2010. This patent describes a field emission structure with an electric or magnetic field source. The size, polarity, and location of the magnetic or electric field source are configured to have desired related properties that conform to a predetermined code. These related properties correspond to specific force functions, where spatial forces correspond to relative alignment, separation distance, and spatial force functions.

[0004] U.S. Patent No. 7,817,006 (related to U.S. Patent No. 7,800,471), entitled "Apparatus and Methods Relatting to Precision Attacks Between First and Second Components," granted to Starridge Research, Inc. on October 19, 2010, teaches an attachment scheme between a first component and a second component. Typically, the first component includes a first field emission structure, and the second component includes a second field emission structure, wherein each field emission structure includes multiple magnetic field emission sources (magnetic arrays) whose positions and polarities are related to a predetermined spatial force function corresponding to a predetermined alignment of the field emission structures. These components are adapted to be attached to each other when the first field emission structure is near the second field emission structure.

[0005] When a relevant magnet is aligned with its complementary or mirror counterpart, the various magnetic field emission sources that make up each relevant magnet will align, resulting in peak spatial attraction or repulsion. Misalignment will cause the various magnetic field emission sources to essentially cancel each other out. The magnitude of the spatial force (attraction, repulsion) is a function of the relative alignment of the two magnetic field emission structures, the magnetic field strength, and their various polarities.

[0006] The field emission sources of the relevant magnet can be modified according to a "code" to enable the magnetic system to exhibit desired behavior without mechanical constraints or without a retaining mechanism to prevent the magnetic force from "flipping" the magnet. As an illustrative example of such magnetic action, a prior art device 1000 is depicted in Figure 1. Device 1000 includes a first component 1002 and a second component 1012. The first component includes a first field emission structure 1004, which includes a plurality of field emission sources 1006. The second component includes a second field emission structure 1014, which includes a plurality of field emission sources 1016. When the first field emission structure 1004 is in proximity to the second field emission structure 1014, the first and second components are adapted to attach to each other, i.e., they are in a predetermined alignment state relative to each other.

[0007] The first field emission structure 1004 may be configured to interact with the second field emission structure 1014, such that the second component 1012 may be aligned to become attached (attracted) to the first component 1002 or misaligned to become removed (repelled) from the first component. The first component 1002 may be released from the second component 1012 when the respective first field emission structures 1004 and second field emission structures 1014 of the first component 1002 and the second component 1012 move relative to each other and become misaligned.

[0008] Typically, the alignment accuracy of two or more field emission structures tends to increase with the increase of the number N of different field emission sources in each field emission structure, including for a given surface area A. In other words, alignment accuracy can be improved by increasing the number N of field emission sources forming the two field emission structures. More specifically, alignment accuracy can be improved by increasing the number N of field emission sources included within a given surface area A.

[0009] U.S. Patent No. 7,893,803, entitled “Correlated Magnetic Coupling Device and Method for Using the Correlated Coupling Device,” granted to Starridge Research, Inc. on February 22, 2011, teaches a coupling device for a compressed gas system component using the aforementioned correlated magnet attachment scheme.

[0010] Figure 1b shows an illustrative example of such a connection device, depicting a quick-connect air hose connector 1200 with a concave element 1202 and a convex element 1204.

[0011] The concave element 1202 includes a first magnetic field emitting structure 1218. The convex element 1204 includes a second magnetic field emitting structure 1222. Both magnetic field emitting structures are generally planar and conform to the same coding, but are mirror images of each other. The operable connection and sealing of the connector components 1202 and 1204 are achieved with sufficient force to ensure a substantially airtight seal between them.

[0012] The convex element 1204 is removed or separated from the concave element 1202 by separating the attached first field emission structure 1218 and second field emission structure 1222. When the convex element rotates relative to the concave element, the convex element is released, which in turn causes the first and second magnetic field emission structures to become misaligned.

[0013] For a description of precise alignment of multiple magnets, please refer to:

[0014] http: / / www.polymagnet.com / media / Polymagnet-White-Paper-3-Smart-Magnets-for-Precision-Alignment.pdf

[0015] Existing filter interconnects present numerous technical hurdles, particularly in terms of downstream electronics. These hurdles include electronic components that prevent fluid leakage to or from the filter housing during initial cartridge installation or operation.

[0016] Therefore, there is a need for an improved filter interconnect that overcomes these technical hurdles without significantly increasing manufacturing costs and complexity.

[0017] This invention adapts the aforementioned related magnet technology to the interconnection structure of filter cartridges and corresponding manifolds, thereby overcoming many technical obstacles in the interconnection of existing filters with downstream electronic functions.

[0018] As described in this article, the relevant magnet technology has a variety of implementations in filter interconnect structures, including, for example, in the actuation of valves or switches, and in improved filter authentication and anti-counterfeiting measures. Summary of the Invention

[0019] In view of the problems and shortcomings of the prior art, one object of the present invention is to provide an improved filter interconnection structure for filter cartridges and corresponding filter manifolds utilizing relevant magnetism.

[0020] Another object of the present invention is to provide an improved filter interconnect that utilizes associated magnetism to provide initial drive to engage downstream system functions.

[0021] Another object of the present invention is to provide an improved method for interconnecting filters and installing filter cartridges in corresponding filter manifolds, which allows for non-electronic and non-contact actuation of downstream electronic system components.

[0022] Another object of the present invention is to provide an improved filter interconnect that prevents leakage by separating the initial filter cartridge installation from the actuation of upstream and / or downstream valves.

[0023] Another object of the present invention is to provide an improved filter interconnect that utilizes relevant magnetism to provide effective authentication and / or anti-counterfeiting measures to ensure proper filter cartridge installation.

[0024] Other objects and advantages of the invention will be apparent in part, and in part, from the description.

[0025] As will be apparent to those skilled in the art, the above and other objectives are achieved in this invention. One aspect of the invention relates to a filtration system comprising: a filter manifold including a reservoir; an electronic switching assembly including circuitry actuable between an open and closed position, the switching assembly being radially disposed relative to the reservoir; and a first associated magnet operatively coupled to the switching assembly. The first associated magnet includes a plurality of magnetic field emission sources, the positions and polarities of which are related to a predetermined spatial force function corresponding to a predetermined alignment of the plurality of magnetic field emission sources. The filtration system further includes a filter cartridge including a filter medium, a first end cap and a second end cap sealed to the filter medium, a body disposed between the first end cap and the second end cap, and complementary or paired second associated magnets radially disposed on one of the first or second end caps near the outer surface of the filter cartridge body. In one embodiment, one of the first or second end caps includes an axially extending portion integral with or connected thereto and near the outer surface of the filter cartridge body, and the second associated magnet is disposed within the axially extending portion.

[0026] The first and second associated multi-magnets are magnetically connected to each other when the filter cartridge is inserted into the reservoir housing, and when the filter cartridge moves to the alignment position, the first associated magnet is laterally translated relative to the longitudinal axis of the reservoir due to the magnetic connection, thereby contacting the actuator to actuate the switch. In at least one embodiment, the manifold further includes a valve, wherein actuation of the switch actuates the valve to open and close the flow of fluid to the filter cartridge.

[0027] In one embodiment, multiple magnetic field emission sources of the first associated magnet are aligned with multiple magnetic field emission sources of the second associated magnet, such that when the filter cartridge is inserted into the storage tank and rotated to the alignment position, a repulsive force is generated between the magnets.

[0028] The reservoir may include alignment threads or channels for mechanical engagement with a filter boss or flange extending radially outward from one of the first or second end caps when the filter cartridge is inserted into the reservoir and rotated to the alignment position. In one embodiment, the filter cartridge is rotated approximately 90 degrees along a first direction from the initial insertion position in the reservoir to the alignment position.

[0029] The filtration system may further include a radially extending locking plate with holes for allowing the filter cartridge to be inserted into the reservoir. The locking plate includes alignment threads or channels for mechanically engaging with a boss or flange of a removable locking cap when the filter cartridge is inserted into the reservoir. The locking cap is rotatable about the longitudinal axis of the reservoir to axially translate the filter cartridge into an aligned position.

[0030] In one embodiment, a first associated magnet is disposed within a translational magnet housing of the switching assembly. The magnet housing is typically biased by a spring toward the longitudinal axis of the reservoir and is linearly slidable in a direction perpendicular to the longitudinal axis of the reservoir due to magnetic communication to contact the actuator, thereby activating the switch when the filter cartridge moves to the alignment position.

[0031] In another aspect, the present invention relates to a filter cartridge comprising a filter medium, a first end cap and a second end cap sealed to the filter medium, a body disposed between the first end cap and the second end cap, and a first associated magnet radially disposed on one of the first end caps near the outer surface of the filter cartridge body. One of the first end caps or the second end cap may include an axially extending portion integral with or connected to it and near the outer surface of the body, and the first associated magnet may be disposed within the axially extending portion. The first associated magnet includes a plurality of magnetic field emitting sources whose positions and polarities are related to a predetermined spatial force function corresponding to a predetermined alignment of the plurality of magnetic field emitting sources. When the filter cartridge is inserted into the reservoir of a filter manifold and moved to the alignment position, the first associated magnet is adapted to be adjacent to complementary or paired second associated magnets.

[0032] The filter cartridge body may further include a sheath or sleeve covering the filter medium and disposed between the first end cap and the second end cap. In one embodiment, the filter cartridge may further include a filter boss or flange extending radially outward from one of the first end cap or the second end cap, which is adapted to mechanically engage with an alignment thread or channel of the reservoir housing when the filter cartridge is rotated to an alignment position.

[0033] In another aspect, the present invention relates to a method for interconnecting a filter cartridge and a filter manifold, comprising: inserting a filter cartridge including an associated magnet into a reservoir of the filter manifold, the associated magnet being radially disposed on one of a first end cap or a second end cap near the outer surface of the filter cartridge body as described above; moving the filter cartridge within the reservoir to an alignment position; aligning a plurality of magnetic field emission sources of the first associated magnet with a plurality of magnetic field emission sources of complementary or paired second associated magnets such that a repulsive force is generated between the magnets, the second associated magnet being operatively coupled to a switching assembly disposed radially relative to the reservoir; and causing the second associated magnet to be laterally translated relative to the longitudinal axis of the reservoir due to magnetic repulsion to contact an actuator to actuate the switch.

[0034] The reservoir may include alignment threads or channels for mechanical engagement with a filter boss or flange extending radially outward from one of the first or second end caps, and the method may further include the steps of: aligning the filter boss or flange with the alignment threads or channels while inserting a filter cartridge into the reservoir; and advancing the filter boss or flange to one end of the alignment threads or channels while rotating the filter cartridge to the alignment position.

[0035] In one embodiment, the filter manifold may further include a radially extending locking plate including a hole for allowing the filter cartridge to be inserted into a reservoir. The locking plate includes alignment threads or channels for mechanically engaging with a boss or flange of a removable locking cap when the filter cartridge is inserted into the reservoir. The locking cap is rotatable about a longitudinal axis of the reservoir to axially translate the filter cartridge into an aligned position. The method may further include the steps of: aligning the locking cap boss or flange with the alignment threads or channels of the locking plate while inserting the filter cartridge into the reservoir; and rotating the locking cap to travel the boss or flange to one end of the alignment threads or channels, thereby moving the filter cartridge into the aligned position.

[0036] In another aspect, the present invention relates to a filtration system comprising: a filter manifold including a reservoir; an electronic switching assembly including circuitry actuable between an open and closed position, the switching assembly being axially disposed relative to the reservoir; and a first associated magnet operably coupled to the switching assembly, the first associated magnet including a plurality of magnetic field emitting sources whose positions and polarities are related to a predetermined spatial force function corresponding to a predetermined alignment of the plurality of magnetic field emitting sources. The filtration system further includes a filter cartridge including a housing having a body, a filter medium disposed within the housing body, a filter head forming a fluid seal with the body, and complementary or paired second associated magnets disposed within or connected to the filter head and having a surface oriented parallel to its top surface, the second associated magnets being rotatable with the filter cartridge. In one embodiment, the filter cartridge further includes an axial rod, the second associated magnets being disposed within the axial rod parallel to the top surface of the filter head. The first and second associated multi-magnets are magnetically connected to each other when the filter cartridge is inserted into the reservoir housing, and when the filter cartridge is rotated to the alignment position, the first associated magnet is axially translated relative to the longitudinal axis of the reservoir due to the magnetic connection, thereby contacting the actuator to actuate the switch. In at least one embodiment, the manifold further includes a valve, wherein actuation of the switch actuates the valve to open and close the fluid flowing to the filter cartridge.

[0037] In one embodiment, multiple magnetic field emission sources of the first associated magnet are aligned with multiple magnetic field emission sources of the second associated magnet, such that when the filter cartridge is inserted into the storage tank and rotated to the alignment position, a repulsive force is generated between the magnets.

[0038] The reservoir may further include alignment threads or channels for mechanical engagement with a filter boss or flange extending radially outward from the filter cartridge housing when the filter cartridge is inserted into the reservoir and rotated to the alignment position. In one embodiment, the filter cartridge is rotated approximately 90 degrees along a first direction from the initial insertion position in the reservoir to the alignment position.

[0039] In one embodiment, a first associated magnet is disposed within a translational magnet holder of the switching assembly, which is typically biased toward the filter head by a spring and axially slidable along the longitudinal axis of the reservoir due to magnetic communication to contact the actuator, thereby activating the switch when the filter cartridge is rotated to the alignment position.

[0040] In another aspect, the present invention relates to a filtration system comprising: a filter manifold including a reservoir; an electronic switching assembly including circuitry actuable between an open and closed position, the switching assembly being axially disposed relative to the reservoir; and a first associated magnet operably coupled to the switching assembly, the first associated magnet including a plurality of magnetic field emission sources whose positions and polarities are related to a predetermined spatial force function corresponding to a predetermined alignment of the plurality of magnetic field emission sources. The filtration system further includes a filter cartridge including a housing having a body, a filter medium disposed within the housing body, a filter head forming a fluid seal with the body, and complementary or paired second associated magnets disposed within or connected to the filter head and having a surface oriented parallel to its top surface. The plurality of magnetic field emission sources of the first associated magnet are aligned with the plurality of magnetic field emission sources of the second associated magnet such that when the filter cartridge is inserted into the reservoir and axially translated to the aligned position, a repulsive force is generated between the magnets, and when the filter cartridge is axially moved to the aligned position, the first associated magnet is axially translated relative to the longitudinal axis of the reservoir due to magnetic repulsion to contact an actuator to actuate the switch.

[0041] In one embodiment, multiple magnetic field emission sources of the first and second associated magnets are arranged concentrically.

[0042] In another aspect, the present invention relates to a filter cartridge comprising a housing having a main body, a filter medium disposed within the housing body, a filter head forming a fluid seal with the main body, and a first associated magnet disposed within or connected to the filter head and having a surface oriented parallel to its top surface. In one embodiment, the filter cartridge further comprises an axial rod in which the first associated magnet is disposed, parallel to the top surface of the filter head. The first associated magnet comprises a plurality of magnetic field emitting sources whose positions and polarities are related to a predetermined spatial force function corresponding to a predetermined alignment of the plurality of magnetic field emitting sources. When the filter cartridge is inserted into a reservoir of a filter manifold and rotated to an aligned position, the first associated magnet is adapted to be adjacent to complementary or paired second associated magnets.

[0043] The filter cartridge may further include a filter boss or flange extending radially from the housing body, the filter boss or flange being adapted to mechanically engage with the alignment threads or channels of the reservoir.

[0044] In another aspect, the present invention relates to a method of interconnecting a filter cartridge and a filter manifold, comprising: inserting a filter cartridge including an associated magnet into a reservoir of the filter manifold, the associated magnet being disposed within or connected to a filter head as described above and having a surface oriented parallel to its top surface; rotating the filter cartridge in the reservoir to an aligned position; aligning a plurality of magnetic field emission sources of a first associated magnet with a plurality of magnetic field emission sources of a complementary or paired second associated magnet such that a repulsive force is generated between the magnets, the second associated magnet being operatively coupled to a switching assembly disposed axially relative to the reservoir; and causing the second associated magnet to be axially translated relative to the longitudinal axis of the reservoir due to magnetic repulsion to contact an actuator to actuate the switch.

[0045] The reservoir may further include alignment threads or channels for mechanical engagement with a filter boss or flange extending radially outward from the filter cartridge housing body, and the method may further include the steps of: aligning the filter boss or flange with the alignment threads or channels while inserting the filter cartridge into the reservoir; and advancing the filter boss or flange to one end of the alignment threads or channels while rotating the filter cartridge to the alignment position.

[0046] In another aspect, the present invention relates to a filtration system comprising: a filter manifold including a reservoir; an electronic switching assembly including circuitry actuable between an open and closed position, the switching assembly being radially disposed relative to the reservoir; and a first associated magnet operatively coupled to the switching assembly, the first associated magnet including a plurality of magnetic field emission sources whose positions and polarities are related to a predetermined spatial force function corresponding to a predetermined alignment of the plurality of magnetic field emission sources. The filtration system further includes a filter cartridge comprising: a housing having a body and a top forming a fluid seal with the body, the top including inlet and outlet fluid ports and an axially extending protrusion integrally formed with or connected to the top of the housing; a filter medium disposed within the housing body; and complementary or paired second associated magnets disposed within or connected to the axially extending protrusion of the housing top and having a surface oriented parallel to the longitudinal axis of the housing body. When the filter cartridge is axially inserted into the alignment position within the reservoir, the first and second associated multimagnets are interconnected via magnetic communication, and as the filter cartridge moves to the alignment position, the first associated magnet translates in a direction perpendicular to the longitudinal axis of the reservoir due to the magnetic communication, thereby contacting the actuator to actuate the switch. In at least one embodiment, the manifold further includes a valve, wherein actuation of the switch actuates the valve to open and close the fluid flowing to the filter cartridge.

[0047] In one embodiment, a plurality of magnetic field emission sources of the first associated magnet are aligned with a plurality of magnetic field emission sources of the second associated magnet, such that when the filter cartridge is axially inserted into the storage tank and moved to the alignment position, a repulsive force is generated between the magnets.

[0048] The reservoir may further include alignment threads or channels for mechanical engagement with ribs or fins extending radially outward from the filter cartridge housing when the filter cartridge is axially inserted into the reservoir.

[0049] In one embodiment, a first associated magnet is disposed within a translational magnet housing of the switching assembly. The magnet housing is typically biased by a spring toward the longitudinal axis of the reservoir and is linearly slidable in a direction perpendicular to the longitudinal axis of the reservoir due to magnetic communication, in order to contact an actuator to actuate the switch.

[0050] In another aspect, the present invention relates to a filter cartridge comprising: a housing having a body and a top forming a fluid seal with the body, the top including inlet and outlet fluid ports, and an axially extending protrusion integrally formed with or connected to the top of the housing; a filter medium disposed within the housing body; and a first associated magnet disposed within or connected to the axially extending protrusion of the housing top and having a face oriented parallel to a longitudinal axis of the housing body. In one embodiment, the axially extending protrusion is offset from an axial center of the top of the filter housing. The first associated magnet includes a plurality of magnetic field emitting sources whose positions and polarities are related to a predetermined spatial force function corresponding to a predetermined alignment of the plurality of magnetic field emitting sources. When the filter cartridge is axially inserted into a position aligned with a reservoir of a filter manifold, the first associated magnet is adapted to be adjacent to complementary or paired second associated magnets.

[0051] In one embodiment, the filter cartridge further includes ribs or fins extending radially outward from the housing body, which are adapted to mechanically engage with alignment threads or channels of the storage tank when the filter cartridge is axially inserted into the storage tank.

[0052] In another aspect, the present invention relates to a method of interconnecting a filter cartridge and a filter manifold, comprising: inserting a filter cartridge including an associated magnet into a reservoir of the filter manifold, the associated magnet being disposed as described above within or connected to an axially extending protrusion on the top of a housing and having a surface oriented parallel to a longitudinal axis of the housing body; axially inserting the filter cartridge within the reservoir into an alignment position; aligning a plurality of magnetic field emission sources of a first associated magnet with a plurality of magnetic field emission sources of a complementary or paired second associated magnet such that a repulsive force is generated between the magnets, the second associated magnet being operatively coupled to a switching assembly disposed axially relative to the reservoir; and translating the second associated magnet in a direction perpendicular to the longitudinal axis of the reservoir due to magnetic communication to contact an actuator to actuate the switch.

[0053] The reservoir may further include alignment threads or channels for mechanical engagement with ribs or fins extending radially outward from the filter cartridge housing body, and the method may further include the steps of: aligning the filter cartridge ribs or fins with the alignment threads or channels while inserting the filter cartridge into the reservoir; and advancing the filter cartridge ribs or fins to one end of the alignment threads or channels while axially inserting the filter cartridge into the alignment position. Attached Figure Description

[0054] The appended claims detail the novel features and essential elements of the invention. The accompanying drawings are for illustrative purposes only and are not drawn to scale. However, the structure and operation of the invention itself can be best understood by referring to the following detailed description taken in conjunction with the accompanying drawings, wherein:

[0055] Figure 1a depicts a prior art device having two components magnetically attached to each other;

[0056] Figure 1b depicts a prior art quick-connect air hose connector, showing the arrangement of the relevant magnets for attachment;

[0057] Figure 2 It describes how magnets can be designed to have different magnetic forces depending on the relative rotational orientation of the magnet pair;

[0058] Figure 3 depicts a perspective view of a green filter cartridge according to an embodiment of the present invention. The filter cartridge includes a first associated magnet radially attached to one of the filter cartridge end caps;

[0059] Figure 4 depicts a perspective view of a green filter cartridge according to an embodiment of the present invention, wherein the dry replacement sleeve has been removed;

[0060] Figure 5 A side plan view of a filtration system including a green filter cartridge and a corresponding filter manifold according to an embodiment of the present invention is depicted, wherein the filter cartridge is in an uninstalled position. The filter manifold includes a second pair of associated magnets operatively coupled to an electronic switch to engage downstream system functions;

[0061] Figure 6 A perspective view of a locking plate for a filter manifold according to an embodiment of the present invention is described;

[0062] Figure 7 Depicting Figure 6 A perspective view of a locking plate having a locking cover for a filter cartridge according to an embodiment of the invention in an installed position;

[0063] Figure 8 Depicting Figure 7 A perspective view of the filter cartridge locking cap;

[0064] Figure 9 It depicts the section intercepted along line AA. Figure 7 The perspective cross-sectional view shows that the boss or flange radially provided on the locking cover is received and guided into the alignment track or thread of the manifold locking plate as the filter cartridge is moved into the installation position;

[0065] Figure 10 A perspective view of a switch assembly according to an embodiment of the present invention is depicted;

[0066] Figure 11 Depicting Figure 10 A perspective view of the switch assembly, with the mounting bracket removed to show the internal components of the assembly;

[0067] Figure 12 A side plan view of the filtration system in Figure 4 is shown, with the filter cartridge in the installation position and the switch in the on state;

[0068] Figure 13 Depicting Figure 12 A perspective cross-sectional view of the filtration system;

[0069] Figure 14 Depicting Figure 13 The side plan view of the filtration system shows the positions of the pairs of associated magnets when the filter cartridge is in the installation position;

[0070] Figure 15 A perspective view of another embodiment of a filtration system according to the present invention, including a filter cartridge and a corresponding filter manifold, is depicted, wherein the filter cartridge is in an uninstalled position. In this embodiment, the filter cartridge includes an associated magnet positioned parallel to a surface of the filter head, and a matching "keyed" second associated magnet is operatively coupled to a mating surface of the manifold for engaging an electronic switch;

[0071] Figure 16 Depicting Figure 15 A perspective view of the filtration system, in which the filter manifold is hidden to show the initial position of the relevant magnet;

[0072] Figure 17 illustrates a perspective view of a switch assembly according to an embodiment of the present invention;

[0073] Figure 18 An exploded view of the switch assembly in Figure 17 is shown;

[0074] Figure 19 and 20 Depicted respectively Figure 15 Perspective view and side cross-sectional view of the filtration system in the uninstalled position;

[0075] Figure 21 and 22 Depicted respectively Figure 15 A perspective view and a side cross-sectional view of the filtration system, wherein the filter cartridge is rotated 90 degrees within the filter manifold toward the installation position;

[0076] Figure 23 and 24 They are Figure 15 Perspective view and side cross-sectional view of the filtration system at the installation location;

[0077] Figure 25 Depicting according to Figures 19 to 25 The installation method shown is a graph of the magnetic holding force as a function of the rotation angle when a pair of related magnets rotate within the effective working distance;

[0078] Figure 26 A perspective view of another embodiment of the filter cartridge according to the invention is depicted, including a first associated magnet extending upward from the top of the filter cartridge housing and parallel to the longitudinal axis of the filter cartridge housing;

[0079] Figure 27 Depicting Figure 26 A perspective view of the filter cartridge, with the filter cartridge housing removed;

[0080] Figure 28 Depicting the location where it is not installed. Figure 26 A perspective view of the filter cartridge and its mating filter manifold. The filter manifold is partially transparent to depict the paired associated magnets and switching components of the manifold;

[0081] Figure 29 Depicting Figure 28 A perspective view of the switch assembly;

[0082] Figure 30 Depicting Figures 28 to 29 A perspective view of the interconnected filters;

[0083] Figure 31 Depicting Figure 30 A perspective view of the filter interconnection, wherein the filter manifold is partially transparent to show the interconnection between the filter cartridge inlet and outlet ports and the filter manifold inlet and outlet supports;

[0084] Figure 32 Depicting the intercept along line CC Figure 28 A perspective cross-sectional view of the interconnected filters;

[0085] Figure 33 Depicting the intercept along line CC Figure 28 A perspective cross-sectional view of the interconnected filters, showing the filter cartridge partially inserted into the filter manifold; and

[0086] Figure 34 Figure 20Depicting the intercept along line CC Figure 28 A perspective cross-sectional view of the interconnected filters, showing the filter cartridges in a connected or installed position or state, with the limit switch in the activated state. Detailed Implementation

[0087] In describing embodiments of the invention, reference will be made herein to Figures 1 to 34 of the accompanying drawings, wherein the same reference numerals denote the same features of the invention.

[0088] Certain terms used herein are merely for convenience and should not be considered as limiting the invention. For example, terms such as “up,” “down,” “left,” “right,” “front,” “rear,” “horizontal,” “vertical,” “upward,” “downward,” “clockwise,” “counterclockwise,” “longitudinal,” “lateral,” or “radial” describe only the configurations shown in the accompanying drawings. In practice, referenced components can be oriented in any direction, and therefore, unless otherwise stated, the terms should be understood to include such variations. For clarity, the same reference numerals may be used in the drawings to identify similar elements.

[0089] Furthermore, in this specification, the terms "exemplary," "illustrative," etc., are used to indicate that they are used as examples, instances, or illustrations. Any aspect or design described herein as "exemplary" or "illustrative" is not necessarily intended to be construed as preferred or advantageous over other aspects or designs. Rather, the use of the terms "exemplary" or "illustrative" is merely intended to present concepts in a specific manner.

[0090] Correlated magnets, also interchangeably referred to herein as coded multimagnets, contain regions with alternating magnetic poles. The patterns of these alternating poles can concentrate and / or form magnetic fields to give matched magnet pairs unique properties. This invention utilizes a correlated magnet design with “high autocorrelation and low cross-correlation,” a characteristic of correlated magnets that achieve peak efficiency (magnetic attraction or repulsion) only when paired with specific complementary magnets. An example of this use of correlated magnets is disclosed in U.S. Patent No. 8,314,671, entitled “KEYSYSTEM FOR ENABLING OPERATION OF A DEVICE,” issued November 20, 2012, to Correlated Magnets Research LLC. Correlated magnets are also characterized by dense and tunable magnetic fields, allowing for a specific design of force profiles with higher forces at shorter operating distances.

[0091] Additionally, the magnets can be designed to have different magnetic forces depending on the relative rotational orientation of the magnet pair (e.g., repulsion-attraction-repulsion-attraction at 90-degree intervals). Please refer to [reference needed]. Figure 2.

[0092] This invention utilizes a magnetic repulsion model applied to filter interconnects, allowing for a greater degree of control and flexibility in the timing and actuation of critical system functions through an engineered system of associated magnets, springs, and simple machines. Integrated into this design is a set of matched “keyed” associated magnets, respectively disposed in / on the filter cartridge housing and filter manifold, which provide initial drive to engage downstream functions via non-electric and non-contact actuation by an electronic system. The embodiments of the invention described herein illustrate the actuation of a downstream valve (e.g., a slide valve or other valve design) to allow water flow; however, those skilled in the art will understand that valve actuation is merely one example of downstream components intended to be within the scope of this invention and does not exclude other components, such as metering systems or other electronic systems.

[0093] This is achieved by having a pair of magnets (preferably correlated magnets) oriented parallel to each other on each component of the connection pair when in the aligned position, wherein a first coded multi-magnet is disposed on the filter cartridge, and complementary pairs of coded multi-magnets are located on a manifold designed to hold the filter cartridge in place. Those skilled in the art will understand that the terms "correlated magnet" or "coded multi-magnet" as used herein may include a single magnet having multiple polarity regions, or alternatively, may include multiple magnets arranged to produce a polarity pattern with desired characteristics. In at least one embodiment, a thin layer of material is introduced to physically separate the two multi-magnets such that they cannot have surfaces in physical contact, but they can still magnetically repel each other.

[0094] When a correct set of "keyed" multimagnets aligns and enters the effective working distance, the result is a repulsive force between the two magnets. The multimagnets positioned on the filter cartridge are fixed; however, the corresponding multimagnets positioned in / on the mating filter manifold are allowed to translate against the mechanical force of the spring. The magnets on the manifold function to assist in actuating valves (e.g., slide valves, cam and lift valves, and other types of valves) via an electronic switch, which is typically spring-biased to a first position. As will be described in more detail below, the force profiles of the spring and associated magnetic couples are designed such that only one set of corresponding "keyed" multimagnets will provide sufficient magnetic force to overcome the spring force to actuate the switch. When the spring is fully depressed, one or more critical system functions are actuated, such as upstream and / or downstream valves, metering systems, or other electronic systems.

[0095] During installation, the filter cartridge can be guided by an alignment rail or threaded and boss / flange system, such that the associated magnets on the filter cartridge and their corresponding associated magnets on the manifold are aligned (in-phase repulsion) but not in contact when in the installation locked position. In at least one embodiment, the associated magnet in the manifold physically actuates a limit switch when repelled by the filter magnet. When the filter is first fully inserted into the manifold in the installation unlocked position, the O-ring is sealed, but the filter and manifold magnets are not aligned; therefore, the upstream and / or downstream valves are not open, and water is not allowed to flow through the filter element. The filter assembly is then rotated 90 degrees into the installation locked position, which aligns the “keyed” associated magnets, thereby achieving peak efficiency (magnetic repulsion), overcoming spring force, and linearly translating the manifold magnet to actuate the limit switch. In one embodiment, the forced engagement of the switch opens the upstream and / or downstream valves and allows water flow.

[0096] Referring now to Figures 3 through 14, an embodiment of the filter cartridge and manifold of the present invention is shown. The replaceable filter cartridge 30 includes a filter medium 32 encapsulated between end caps 34 and 36, and includes an associated magnet 40 located at the top of the cartridge near the outer surface of the cartridge body. End cap 36 includes an integral manifold cup 35 for securing the filter medium 32 and facilitating connection to the manifold 50. As shown in Figures 3 and 4, end cap 34 may include a downwardly axially extending magnetic housing 39 that holds or embeds the magnet 40 on its outer surface. Filter cartridge 30 further includes an axial rod 31 that includes inlet and outlet fluid ports. Filter cartridge 30 is initially inserted into the reservoir housing 56 in the manifold 50 into a partially installed position where an O-ring seal is present, but the downstream valve is not open, and water flow is not permitted. Figure 5 Surrounding the filter medium 32 and the filter cup 35 is a dry replacement sleeve 33 that forms the filter cartridge body, which is positioned between the filter medium 32 and the storage tank 56 when the filter cartridge is inserted into the storage tank.

[0097] like Figure 5 As shown, it is best to do as Figures 6 to 7 As shown, in one embodiment, the manifold 50 may include a radially extending locking plate 51, which includes a hole for allowing the filter cartridge 30 to be inserted into the reservoir 56, and further includes an alignment track or thread 52, which represents an "entry track" for the filter cartridge 30 by means of a filter boss or flange 44 receiving the locking cap 42 when the filter cartridge 30 is inserted into the reservoir housing 56 and connected to the manifold 50. The thread 52 may be a "Z-thread" whose threads allow the filter cartridge 30 to rotate 90 degrees from a first unlocked position to a second locked position, such as... Figure 6 As shown. Those skilled in the art will understand that the alignment thread 52 is not limited to a "Z-shaped thread" or other continuous segmented paths, and other shapes of continuous paths or threads are also within the scope of this invention, as long as the thread serves to keep the relevant magnets 40, 54 within the effective working distance when the filter cartridge is inserted into the storage tank. Figure 7 and 8 As shown, the locking cap 42 can be attached to the filter cartridge end cap 34 to facilitate the installation of the filter assembly. When the locking cap 42 is rotated, the boss or flange 44 moves along the alignment track 52 to its end, axially pushing the filter cartridge downwards (i.e., into the reservoir). Figure 13 As shown, the rotating end position of the boss or flange 44 within the alignment track 52 positions the filter cartridge 30 and filter magnet 40 in an aligned position for filtration operation. In the illustrated embodiment, the locking cap 42 is rotatable about the longitudinal axis of the reservoir while the filter cartridge translates axially without rotating; however, those skilled in the art will understand that in other embodiments, the end cap 34 and the locking cap 42 may be a single molded piece rather than two connected structures, allowing the filter cartridge to rotate to the aligned position. In other embodiments, the filter assembly does not include a locking cap, and the filter cartridge end cap includes a boss or flange radially disposed on its outer surface for reception in the alignment channel or track of the manifold.

[0098] like Figure 5 As further shown in the text, and in Figures 10 to 11 As best seen, manifold 50 includes corresponding "keyed" or paired associated magnets 54, which are positioned to align with filter magnet 40 when the boss or flange 44 is at the end of alignment track 52. Magnets 54 are part of a switching assembly 60 for actuating a downstream valve. Figure 10 As shown, the switch assembly 60 is housed within a mounting bracket 66 and includes a magnet 54, a spring 62, and an actuator 64, which are mechanically connected to a set of contacts for a limit switch 68. The magnet 54 is non-rotatable but can slide linearly within a magnet housing or retainer 58 in a direction perpendicular to the longitudinal axis of the reservoir. The retainer 58 with the magnet 54 is operatively coupled to the limit switch 68, which is typically biased to a closed position by the spring 62.

[0099] like Figures 12 to 14 As shown, when filter magnet 40 and manifold magnet 54 are aligned and within their effective working distance, a repulsive force is generated between the two magnets. The force curves of spring 62 and magnetic couples 40 and 54 are designed such that, at peak efficiency, there is sufficient magnetic repulsive force to overcome the spring force of the switch, as... Figure 14 As shown, the spring is compressed in the direction of the arrow, and the retainer 58 contacts the actuator 64 to form an electrical connection to actuate the limit switch 68. When the spring is fully compressed, the limit switch 68 is actuated, which in turn actuates the valve (not shown), allowing water flow. In one embodiment, as... Figure 14As best shown, when the filter cartridge 30 is in the installed locked position, the filter magnet 40 and the manifold magnet 54 are at an effective working distance of approximately 4 mm. When the filter cartridge is connected to the manifold, a portion of the reservoir housing 56 is disposed between the magnets, preventing contact between the magnets 40 and 54 while still allowing magnetic cooperation. The reservoir housing 56 is a molded part of the filter manifold and serves as a pressure vessel for the filter cartridge, which is typically a plastic filter housing surrounding the filter media. The absence of a pressure-bearing filter housing on the replaceable filter cartridge reduces the amount of plastic required in the manufacturing process and promotes “green” filtration. In one embodiment, the filter cartridge 30 may include a sheath or other thin layer of material comprising the filter cartridge “body,” such as the polyethylene dry replacement sleeve 33 shown in Figure 3, which surrounds the filter media (which does not absorb pressure) and is designed to allow a user to remove and replace the filter cartridge from the manifold without contacting the wet filter media.

[0100] like Figure 14 As further shown, in one embodiment, the spring 62 requires an additional 4 mm of travel to actuate the limit switch 68, and therefore the paired associated magnets 40, 54 are adapted to generate sufficient magnetic repulsion force over a distance of approximately 8 mm. Providing sufficient magnetic repulsion force to double the required distance will safely accommodate design and manufacturing tolerances and ensure switch actuation. Because the associated magnets are characterized by dense and tunable magnetic fields, force profiles with higher forces can be specifically designed for shorter working distances. Conventional magnets would not be able to generate sufficient magnetic force over such short effective distances without significantly increasing the physical size of the magnets, which would present design feasibility issues. Those skilled in the art will understand that associated magnets are preferred for physically smaller magnets such as those used in this invention because a strength advantage can be obtained at very short working distances. Those skilled in the art will also understand that an effective working distance of 4 mm between magnets is shown for illustrative purposes only, and in other embodiments, the effective working distance may be shorter than 4 mm depending on design requirements. Effective working distances greater than 4 mm can also be achieved.

[0101] In addition to providing the initial drive for engaging downstream system functions, the magnetic connectivity between the filter and manifold magnets 40, 54 offers the added benefit of providing filter authentication and anti-counterfeiting measures. Unless the polarity array or pattern of the relevant magnets 40, 54 is accordingly "keyed" or paired, the magnetic connectivity will not actuate the switching assembly 60, and therefore the valve will not open to allow water flow. Thus, only genuine OEM filter cartridges will function, while non-OEM or counterfeit cartridges will not. This also limits the counterfeit market, which is particularly important for the safety of consumers seeking clean drinking water who believe they can save money by purchasing non-genuine replacement cartridges that can be mechanically connected to the matching manifold but may not have a closed filter medium that removes contaminants or impurities from water as effectively as the filter medium in genuine replacement parts.

[0102] Now for joint reference Figures 15 to 24 This illustrates another embodiment of the invention, wherein the polar array or pattern of the associated magnets is characterized by a relative rotational orientation force curve. Figure 15 The filter interconnection is shown in its uninstalled position. The replaceable filter cartridge 130 includes other conventional filter media disposed within the filter housing body 132. The filter cartridge 30 further includes an axial rod 131 and a surface disposed within the rod parallel to the filter head 133. Figure 16 The first relevant magnet 140. The filter cartridge 130 can initially be inserted into the reservoir 156 in the manifold 150 into the installation unlocked position, wherein the O-ring is sealed, but the downstream valve is not open and water flow is not permitted. Figure 15 ).

[0103] like Figure 16 As shown, in this embodiment, the pair of associated magnets are positioned parallel to the surface of the filter head and the mating surface of the manifold, respectively. The filter magnet 140 is fixed in place, while the mating "keyed" manifold magnet 154 is part of a switching assembly 160 for actuating a downstream valve (not shown) and is supported by a spring 162 but prevented from rotating. As shown in FIG. 17, the switching assembly 160 includes a second pair of associated magnets 154 disposed within a magnet holder or cap 158, which is generally biased by the spring 162 in an extended axial position (i.e., toward the filter magnet 140). Disposed within the spring 162 are a limit switch 168 actuable by an actuator 164 and a switch 168 connected to a PCB 169. A base 159 completes the switching assembly. As shown in FIG. 17, the PCB 169 can be connected via leads to downstream system components, such as a downstream valve.

[0104] The rotational adjustment of the filter during installation ranges from the net attraction / neutral region to the peak repulsion magnetic interaction.

[0105] Alignment rails or threads, including alignment threads 152 on the manifold and bosses or flanges 144 radially disposed on the filter housing 132, and associated filter boss systems, can be combined to provide timing control of filter-manifold magnet orientation and working distance. Figures 19 to 24 A method for mounting the filter cartridge 130 into the manifold 150 is shown. (See diagram) Figures 19 to 24 As shown, the alignment thread 152 can be a "Z-thread" for receiving the filter boss or flange 144 when the filter cartridge 130 is rotated to the installation locking position. Figure 19 The filter cartridge 130 is shown in its initial, uninstalled position. At position A, during the initial installation step, a threaded or rail system is used to bring the filter magnet 140 and manifold magnet 154 into the effective working distance and provides a mechanical advantage for positioning the O-ring. In this relative orientation, the resulting magnetic force can be attractive, neutral, or weakly repulsive. Figure 20 As shown in the cross-sectional view, and also as Figure 16 As shown, at position A, the phase or alignment of magnets 140 and 154 differs by 90 degrees.

[0106] At position B, such as Figures 21 to 22 As shown, the filter O-ring is fully in place, and the associated magnets are within the effective working distance, but are out of phase by approximately 45 degrees. The relative orientation of the magnets enters the net repulsion region at an angle of approximately 45 degrees to the alignment; however, the magnetic repulsion force is insufficient to overcome the opposing spring force and drive the associated magnet-spring system. Figures 23 to 24 As shown, at position C, the filter cartridge 130 rotates to the installed locked position or state, and the associated magnet pair remains within the effective working distance. However, the relative orientation of the magnets now results in peak repulsion (i.e., magnets in phase), generating a repulsive force sufficient to drive the associated magnet-spring system and actuate the intended downstream system function. Figure 24 As shown, the repulsive force between magnets 140 and 154 causes magnet holder 158 to translate axially downward in the direction of the arrow, thereby compressing spring 162 and causing actuator 164 to activate limit switch 168, thereby allowing intended downstream system functions, such as actuating valves to allow the flow of filtered outflow fluid.

[0107] In one embodiment, the end of the alignment thread may have a groove or locking mechanism to provide tactile feedback indicating successful installation of the filter cartridge.

[0108] The filter cartridge can be removed by reversing the above actions and rotating it in the opposite direction, and extraction can be assisted by magnetic repulsion and spring force. In at least one embodiment, there may be a dedicated outlet track or guide rail that can utilize the net magnetic repulsion area to support the extraction and removal of the filter cartridge.

[0109] Figure 25This describes the magnetic holding force as a function of the rotation angle when a pair of related magnets rotate within an effective working distance. For example... Figure 24 As shown, in one embodiment, when the filter cartridge is in the installed locked position, the pair of associated magnets are at an effective working distance of approximately 1.5 mm.

[0110] Those skilled in the art will understand that in other embodiments, the polarity array or pattern of the associated magnets is not characterized by a relative rotational orientation force curve, and the presence of repulsive force is independent of magnet orientation. In this embodiment, the magnet pattern may be, for example, concentric, and it will not be necessary to rotate the filter cartridge and the associated magnets in the θ direction to align the polarity array between the pairs of magnets to generate the desired repulsive force.

[0111] Now for joint reference Figures 26 to 34 Another embodiment of the filter cartridge and manifold of the present invention is shown. The filter cartridge 230 includes a housing 270 having a body 272 and a top 274 forming a fluid seal with the body. The top 274 includes a fluid inlet port 276 and an outlet port 278. An additional conventional filter medium 232 is sealed between end caps 234, 236 within the filter housing body 272. In this embodiment, the filter cartridge 230 includes a filter magnet 240 extending axially from the top 274 of the filter cartridge housing parallel to the longitudinal axis of the filter cartridge housing body 272. Figure 26 As shown, the filter housing 270 includes an upwardly axially extending portion 242 extending from a top 274, which is integral with and offset from the axial center of the filter housing. A magnet 240 is disposed within the filter housing. Those skilled in the art will understand that in other embodiments, the magnet 240 may alternatively be positioned within a magnet housing, which is attached to the filter housing in other ways, such as by snap-fit ​​or friction fit to the top 274 of the housing. Other attachment methods, such as welding or bonding, are not excluded.

[0112] like Figure 28 As shown, the filter cartridge 230 can be inserted axially (as indicated by arrow 1) into the storage tank housing 256 at a first position and a second alignment position. Figure 34 Between these two points, in the first position, the O-ring is sealed, but the downstream valve is not open, and water is not allowed to flow. Figure 28 As further shown, the manifold 250 includes a corresponding "keying" related magnet 254, when the filter housing 270 is fully inserted into the reservoir 256, i.e., in the second alignment position, such as Figure 34As shown, the magnet is positioned aligned with the filter magnet 240. The manifold magnet 254 is non-rotatable but can be linearly translated in a direction perpendicular to the longitudinal axis of the filter cartridge. The manifold magnet 254 is operably coupled to the switching assembly 260 via a magnet holder 258, which is typically biased in the closed position by a spring 262. Figure 29 The switch assembly 260 is disposed within the mounting bracket 266 and includes a magnet 254, a spring 262, and an actuator 264 for a limit switch 268. In one embodiment, the switch assembly 260 may be coupled with... Figures 10 to 11 The switch assembly 60 shown is identical or substantially similar. When the filter magnet 240 and manifold magnet 254 are aligned and within their effective operating distance, a repulsive force is generated between the two magnets. The force curves of the springs and magnetic couplers 240, 254 are designed such that, at peak power, there is sufficient magnetic repulsive force to overcome the spring force 262 of the switch, thereby compressing the spring in the direction of the arrow, as... Figure 29 As shown. When the spring is fully compressed, the retainer 258 contacts the actuator 264 to activate the limit switch 260, which in turn actuates the valve (not shown), thereby allowing water to flow.

[0113] In one or more embodiments, the manifold 250 may include alignment channels for receiving at least a portion therein of the filter cartridge 230 to ensure that the filter cartridge 230 is axially inserted into the reservoir 256, allowing the filter and manifold magnet to be properly aligned when in the alignment position. Figures 30 to 31 As shown, the filter cartridge 230 includes radially extending ribs or fins 286 on the housing body 272, which align with the channel 252 in the manifold 250 when the filter cartridge 230 is properly inserted into the reservoir 256. Figures 32 to 34 As shown, when the filter cartridge is in the aligned position, a portion of the manifold 250 is positioned between the magnets to prevent contact between the magnets 240 and 254 while still allowing magnetic cooperation.

[0114] In addition to providing the initial drive for engaging downstream system functions, the magnetic connectivity between the filter and manifold magnets 240, 254 has the added benefit of providing filter authentication and anti-counterfeiting measures. Unless the polarity array or pattern of the relevant magnets is "keyed" accordingly, the magnetic connectivity will not actuate switch 260, and therefore the valve will not open to allow water flow. Thus, only genuine OEM filter cartridges will function, while non-OEM or counterfeit cartridges will not.

[0115] Those skilled in the art will understand that the present invention is not limited to magnetic communication in the form of magnetic repulsion between the filter cartridge-related magnet and the corresponding manifold-related magnet, nor does it exclude other forms of magnetic communication. For example, in one or more embodiments, when the filter cartridge is installed in the manifold, a shear force can be introduced such that when the filter cartridge is moved to the installation locking position, the manifold magnet moves radially or laterally relative to the filter cartridge magnet. This radial or lateral movement can also activate a limit switch to open a valve, as in the embodiment shown in the accompanying drawings.

[0116] In such an embodiment, each of the filter magnet and the manifold magnet includes at least one associated magnet (or an array of associated magnets), wherein the polarity reversal of each of the magnets is aligned such that a net shear force is generated between the magnets when the filter cartridge is inserted into the manifold reservoir housing and moved to the aligned position, thereby allowing direct or indirect actuation of downstream system functions via mechanical actuation of a simple machine.

[0117] Therefore, the present invention achieves one or more of the following advantages. The present invention provides an improved filter interconnect that utilizes associated magnetism to provide initial drive to engage downstream system functions, thereby providing a greater degree of control and flexibility in the timing and actuation of downstream system functions. By utilizing magnetic repulsion, the present invention further allows for non-electronic and non-contact actuation of downstream electronic systems, overcoming the technical barriers of prior art electronic interconnects, which suffer from fluid access to electronic components, and provides an improved filter interconnect that prevents leakage by separating the initial filter cartridge installation from the actuation of upstream and / or downstream valves. The present invention is further applicable to alternative methods for filter authentication and anti-counterfeiting.

[0118] Although the invention has been specifically described in conjunction with particular embodiments, it will be apparent to those skilled in the art from the foregoing description that many alternatives, modifications, and variations will be apparent. Therefore, it is contemplated that the appended claims will encompass any such alternatives, modifications, and variations that fall within the true scope and spirit of the invention.

Claims

1. A filter cartridge, comprising: Filter media; A first end cap and a second end cap are sealed to the filter medium; A fluid inlet port and a fluid outlet port extending from one of the first end caps or the second end caps and in fluid communication with the filter medium; The main body is disposed between the first end cap and the second end cap and outside the filter medium; and A related magnet is radially disposed on or in one of the first end caps or the second end cap, near the outer surface of the body of the filter cartridge. The related magnet is isolated from the inflow and outflow fluids and includes a plurality of magnetic field emission sources whose positions and polarities are related to a predetermined spatial force function corresponding to a predetermined alignment of the plurality of magnetic field emission sources.

2. The filter cartridge of claim 1 wherein, The associated magnet has a radially outward-facing surface, which includes the plurality of magnetic field emission sources, and the radially outward-facing surface exists in a direction away from the central axis of the body of the filter cartridge.

3. The filter cartridge of claim 1 wherein, The main body of the filter cartridge also includes a sheath or sleeve, which covers the filter medium and is disposed between the first end cap and the second end cap.

4. The filter cartridge of claim 3 wherein, The sheath or sleeve is pressure-free.

5. The filter cartridge of claim 3 wherein, The sheath or sleeve includes a polyethylene dry replacement sleeve.

6. The filter cartridge of claim 1 wherein, One of the first end caps or the second end cap includes an axially extending portion integral with or connected to the outer surface of the body of the filter cartridge and close to it, wherein the associated magnet is disposed within or connected to its radially outward-facing surface.

7. The filter cartridge of claim 6 wherein, The axially extended portion is positioned off-center from the axial center of the filter cartridge body.

8. The filter cartridge according to claim 1, characterized in that, It also includes a filter boss or flange extending radially outward from one of the first end caps or the second end cap.

9. The filter cartridge of claim 8 wherein, The associated magnet has a radially outward surface that does not extend further than the outermost radial extension of the filter boss or flange.

10. The filter cartridge of claim 1 wherein, The associated magnet is an array of associated magnets.

11. The filter cartridge of claim 1 wherein, It also includes a filter cup integral with the first end cap or the second end cap, for securing the filter medium and for facilitating connection to the filter manifold.

12. The filter cartridge of claim 1 wherein, It also includes a housing integral with or connected to the first or second end cap, wherein the associated magnet is embedded in the housing or fixed to its outer surface.

13. The filter cartridge of claim 12 wherein, The housing is radially offset from the fluid inlet port and the fluid outlet port.

14. The filter cartridge of claim 12 wherein, The housing extends parallel to the longitudinal axis of the main body of the filter cartridge.

15. The filter cartridge of claim 12 wherein, The housing extends in an axial direction toward the other of the first end cap or the second end cap.

16. The filter cartridge of claim 1 wherein, It also includes a removable locking cap, which is connected to the first end cap or the second end cap and includes a radially extending boss or flange, the removable locking cap being rotatable about the longitudinal axis of the body of the filter cartridge.

17. The filter cartridge according to claim 16, characterized in that, The removable locking cap can rotate independently of the filter cartridge about the longitudinal axis of the filter cartridge body.

18. The filter cartridge of claim 1 wherein, It also includes a locking cover integral with the first end cap or the second end cap and including a radially extending boss or flange, the associated magnet having a radially outward facing surface that does not extend further than the outermost radial extension of the boss or flange of the locking cover.

19. The filter cartridge of claim 1 wherein, It also includes an axial rod near the first end cap or the second end cap, the axial rod including the fluid inlet port and the fluid outlet port.

20. The filter cartridge of claim 1 wherein, The filter medium is oriented in the axial direction, and the first end cap and the second end cap extend circumferentially outward in the radial direction.

21. A filter cartridge, comprising: A filter medium having a first end and a second end, and a body extending in the axial direction between the first end and the second end; A first end cap and a second end cap that are sealed at the end of the filter medium and extend circumferentially outward in the radial direction; An axial rod extending from the top surface of the first end cap includes a fluid inlet and outlet communicating with the filter medium; as well as An coded multi-magnet is arranged inside or connected to an axial rod and has a surface parallel to its top surface. The coded multi-magnet includes multiple magnetic field emission sources whose positions and polarities are related to a predetermined spatial force function, which corresponds to a predetermined arrangement of the multiple magnetic field emission sources.

22. The filter cartridge of claim 21 wherein, The filter cartridge further includes a sheath or sleeve surrounding the filter medium.

23. The filter cartridge of claim 22 wherein, The sheath or sleeve is pressure-free.

24. The filter cartridge of claim 22 wherein, The sheath or sleeve includes a polyethylene dry replacement sleeve.

25. The filter cartridge of claim 21 wherein, The coded multi-magnet includes a coded multi-magnet array, each coded multi-magnet includes multiple magnetic field emission sources, and the coded multi-magnet array is arranged according to a predetermined arrangement corresponding to a predetermined spatial force function that is predetermined to the multiple magnetic field emission sources.

26. The filter cartridge of claim 21 wherein, It further includes a filter boss or flange extending radially outward from a second end cap, the filter boss or flange being adapted for mechanical coupling with an alignment thread or channel of a removable locking cap.

27. The filter cartridge of claim 21 wherein, The predetermined spatial force function is magnetic repulsion.

28. The filter cartridge of claim 21 wherein, The predetermined spatial force function is magnetic shear force.

29. A filtration system, comprising: Filter manifold, including: Storage tank; An electronic switching assembly, comprising a switch actuable between an open position and a closed position, the switching assembly being radially disposed axially relative to a reservoir; and An coded multimagnet, operably coupled to a switching component, comprises multiple magnetic field emission sources, the positions and polarities of which are related to a predetermined spatial force function corresponding to a predetermined arrangement of the multiple magnetic field emission sources; and Filter cartridge, including: A filter medium having a first end and a second end, and a body extending in the axial direction between the first end and the second end; First and second end caps, which are sealed to the ends of the filter medium and extend circumferentially outward in the radial direction; An axial rod extending from the top surface of the first end cap includes a fluid inlet and outlet communicating with the filter medium; and Paired coded multi-magnets arranged inside or connected to the axial rod and having a surface parallel to its top surface; In this design, multiple magnetic field emission sources of the coded multi-magnet on the filter cartridge are aligned with multiple magnetic field emission sources of the paired coded multi-magnet on the filter manifold. When the filter cartridge is inserted into the storage tank and moved to the aligned position, a magnetic field force is generated between the filter cartridge and the filter manifold. When the filter cartridge moves axially to the alignment position, the paired coded multi-magnet of the filter manifold moves along the longitudinal axis of the reservoir to contact the actuator to activate the switch.

30. The filtration system of claim 29, wherein, The second end cap includes a filter boss or flange extending radially therefrom, and further includes a removable locking cap having alignment threads or channels for receiving the filter boss or flange.

31. The filtration system of claim 30, wherein, When the filter boss or flange is received in the alignment thread or channel of the removable locking cap and the filter cartridge is inserted into the reservoir, the removable locking cap can rotate about the longitudinal axis of the filter cartridge, pushing the filter cartridge axially into the alignment position, while the filter boss or flange moves to its end within the alignment thread or channel.

32. The filtration system of claim 29, wherein, The filter manifold also includes a valve, and activation of the switch causes the valve to open and close the flow of fluid to the filter cartridge.

33. The filtration system of claim 29, wherein, When the filter cartridge is inserted into the reservoir and moved to the alignment position, a portion of the reservoir is located between the coded multimagnet of the filter cartridge and the coded multimagnet of the manifold.

34. The filtration system of claim 29, wherein, The magnetic force is a magnetic repulsive force.

35. The filtration system of claim 29, wherein, The magnetic force is magnetic shear force.

36. A method for connecting a filter cartridge and a filter manifold, comprising: A filter cartridge is inserted into the reservoir of a filter manifold. The filter cartridge includes a filter medium having first and second ends, a body extending axially between the first and second ends, a first end cap and a second end cap sealing the ends of the filter medium and extending radially outward, an axial rod extending from the top surface of the first end cap, a fluid inlet and outlet communicating with the filter medium, and an coded multi-magnet arranged within or connected to the axial rod and having a surface parallel to its top surface. The coded multi-magnet includes multiple magnetic field emission sources whose positions and polarities are related to a predetermined spatial force function, which corresponds to a predetermined arrangement of the multiple magnetic field emission sources. Move the filter cartridge axially within the storage tank to the alignment position; The multiple magnetic field emission sources of the coded multi-magnet of the filter cartridge are aligned with the multiple magnetic field emission sources of the paired coded multi-magnet to generate a magnetic field force between them. The paired coded multi-magnet is operatively coupled to the switching assembly near the storage tank. as well as As a result of the magnetic force, the paired coded multi-magnets move along the longitudinal axis of the reservoir to contact the actuator of the start switch.

37. The method of claim 36, wherein, Further steps include: The filter boss or flange extending radially from the second end cap of the filter cartridge is received in the alignment thread or channel of the removable locking cap; as well as Rotating the removable locking cap about the longitudinal axis of the filter cartridge axially pushes the filter cartridge into the alignment position, while the filter boss or flange moves to its end within the alignment thread or channel.

38. The method of claim 36, wherein, The filter manifold also includes a valve and further includes the following steps: The valve is activated to allow fluid to flow toward the filter cartridge, as a result of the activation of the switch.

39. The method of claim 36, wherein, The magnetic force is a magnetic repulsive force, and the step of moving the paired coded multi-magnet along the longitudinal axis of the tank includes: The paired coded magnets are moved axially along the longitudinal axis of the storage tank.

40. The method of claim 36, wherein, The magnetic force is a magnetic shear force, and the step of moving the paired coded multi-magnet along the longitudinal axis of the tank includes: moving the paired coded multi-magnet in a direction perpendicular to the longitudinal axis of the tank.

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