US20050252841A1 - Keyed filter assembly - Google Patents

Keyed filter assembly Download PDF

Info

Publication number
US20050252841A1
US20050252841A1 US11187734 US18773405A US2005252841A1 US 20050252841 A1 US20050252841 A1 US 20050252841A1 US 11187734 US11187734 US 11187734 US 18773405 A US18773405 A US 18773405A US 2005252841 A1 US2005252841 A1 US 2005252841A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
cartridge
representative
filter
neck portion
lugs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11187734
Inventor
Laurence Bassett
William Contaxis
Bruce Taylor
David Carbo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
Bassett Laurence W
Contaxis William Iii
Taylor Bruce G
Carbo David A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D27/00Cartridge filters of the throw-away type
    • B01D27/08Construction of the casing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D27/00Cartridge filters of the throw-away type
    • B01D27/10Safety devices, e.g. by-passes
    • B01D27/106Anti-leakage or anti-return valves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D35/00Other filtering devices; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/153Anti-leakage or anti-return valves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2201/00Details relating to filtering apparatus
    • B01D2201/40Special measures for connecting different parts of the filter
    • B01D2201/4046Means for avoiding false mounting of different parts
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus
    • C02F2201/006Cartridges

Abstract

Disclosed is a unique filter assembly for ensuring replacement cartridge compatibility in filtration systems having replaceable filter cartridges with lugged mounting systems. One representative filter assembly includes a representative cartridge member having a body portion for enclosing filter media and a neck portion depending therefrom. The representative neck portion of the representative cartridge includes at least one axial inlet port for directing unfiltered fluid into the body portion and at least one axial outlet port for directing filtered fluid out of the body portion. The representative neck portion also has at least two representative lugs depending radially outwardly therefrom, wherein at least one lug defines a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface. The at least two representative lugs wherein at least one lug defines a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface could be operatively positioned on other components of the representative filter assembly as well.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This application is a divisional of U.S. application Ser. No. 10/734,498 filed Dec. 12, 2003, which is a continuation-in-part of U.S. application Ser. No. 10/208,492 filed Jul. 30, 2002, now abandoned, which is a continuation of U.S. application Ser. No. 09/553,982 filed Apr. 20, 2000, now U.S. Pat. No. 6,458,269, the disclosure of each is hereby incorporated by reference to the extent not inconsistent with the present application.
  • BACKGROUND OF THE DISCLOSURE
  • The subject disclosure relates to fluid filtration devices, and more particularly, to a filter assembly having a keyed lockout system to ensure replacement cartridge compatibility.
  • Commercial vending machines for dispensing liquids such as coffee or soft drinks are wide spread in our society. It is common to filter liquids such as water in these vending machines before they are dispensed by circulating the water through an appropriate filter. It is also commonplace to find filtering devices in consumer appliances such as refrigerators for filtering drinking water and for ice production. Commercial and domestic filtering devices of this type have a limited useful life and require frequent replacement. Examples of prior art replaceable filtering devices of this type are disclosed in commonly assigned U.S. Pat. No. 4,735,716 to Petrucci et al. and U.S. Pat. No. 4,806,240 to Giordano et al.
  • In most instances, the replaceable filters employed in commercial and consumer appliances are manufactured in accordance with particular design specifications and performance parameters provided by the appliance manufacturer. In many cases, the filter media used in such filters consists of a proprietary material or is manufactured using a proprietary process. Thus, appliance manufactures often recommend that replacement cartridges be purchased from the original equipment provider so as to ensure the integrity and proper operation of the filtering system.
  • Oftentimes, the owner of a household appliance or the maintenance personnel servicing a commercial vending machine is not aware of the replacement filter specifications and operating parameters of the filtering system. Consequently, they unknowingly jeopardize the integrity of the filtration system by replacing a used filter with an inferior or incompatible replacement filter supplied by an after-market manufacturer. This problem has also been encountered by automotive filter manufacturers, as inferior replacement fuel filters are frequently installed in a vehicle without the knowledge of the vehicle owner or operator.
  • One solution to this problem is disclosed in U.S. Pat. No. 5,035,797 to Janik, wherein a key system is provided to ensure replacement cartridge compatibility for axially mounted fuel filters with threaded retaining collars. The key system employs a unique matrix of axially projecting keys formed in a base for axially receiving a filter cartridge, and a corresponding matrix of slots formed in a compatible cartridge, so that for a given compatible cartridge and base, the keys are interlockable in the slots to securely lock the cartridge in the base. For each non-compatible cartridge and base, the base keys are not-mateable with the cartridge slots and interfere with the mounting of the cartridge to the base. A similar key system is disclosed in U.S. Pat. No. 5,186,829 to Janik which includes a set of angularly spaced arcuate projections that protrude radially from the cylindrical side wall of the fuel filter cartridge to mate with corresponding spaced apart recesses in the base when the cartridge is axially pushed into the base. U.S. Pat. No. 5,837,137 to Janik discloses yet another key system for an axially mounted fuel filter with a threaded retaining collar.
  • While such prior art key systems are suitable for use in conjunction with axially mountable automotive fuel filters having threaded retaining collars, they are not easily adapted for use in conjunction with consumer and industrial water filtration systems wherein the filter cartridge is provided with a set of cam lugs configured to facilitate rotatable mounting of the cartridge to a base or supporting structure. Examples of prior art filter cartridges having lugged engagement portions are disclosed in the Petrucci et al. and Giordano et al. patents discussed hereinabove, and in U.S. Pat. Nos. 4,857,189 and 4,956,086 to Thomsen et al. It would beneficial to provide a key system for replaceable filter cartridges having lugged mounting systems.
  • SUMMARY OF THE DISCLOSURE
  • The present disclosure is directed to a unique filter assembly for ensuring replacement cartridge compatibility in filtration systems having replaceable filter cartridges with lugged mounting systems. In accordance with one representative preferred representative embodiment of the present disclosure, the filter assembly comprises a cartridge member which includes a body portion for enclosing filter media and a neck portion depending therefrom. The neck portion of the cartridge includes at least one inlet port for directing unfiltered fluid into the body portion and at least one outlet port for directing filtered fluid out of the body portion. The neck also has at least two lugs depending radially outwardly therefrom, wherein at least one lug defines a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface. Preferably, the keyed engagement surface is on an axially facing surface of the at least one lug.
  • In another representative, preferred embodiment, the neck portion of the cartridge member includes first and second axially facing surfaces. The first axially facing surface has at least one inlet port formed therein and the second axially facing surface has at least one outlet port formed therein.
  • Still further, it is envisioned that each lug defines a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface. Still further, it is envisioned that the keyed engagement surface defined on each lug of the cartridge member is substantially similar. Alternatively, the keyed engagement surface defined on each lug of the cartridge member can be different.
  • The representative filter assembly may further include a head member which defines an axial chamber and includes inlet and outlet passages that communicate with the chamber. A valve member is rotatably disposed within the axial chamber of the head member and defines an axial cavity for receiving the neck portion of the cartridge member to facilitate communication between the inlet and outlet passages of the head member and the inlet and outlet ports of the neck portion. The cavity formed in the valve member defines at least one reception slot which includes a surface for mating with the keyed engagement surface formed on the lug(s). The reception slot(s) further defines at least one inclined surface for interacting with the trailing inclined cam surface formed on the lug(s) to facilitate engagement and/or disengagement of the cartridge member with the axial cavity of the valve member.
  • The representative filter assembly may further include a support member which is disposed between the head member and the cartridge member and includes an aperture for receiving the neck portion of the cartridge member. The aperture has an inner surface that defines at least two cam ramps for interacting with the leading inclined cam surface formed on the lug(s) to facilitate engagement of the lug(s) of the cartridge member with the support member.
  • In another representative, preferred embodiment of the present disclosure, the neck portion of the cartridge member has a pair of diametrically opposed lugs. Alternatively, the neck portion of the cartridge member has three circumferentially spaced apart lugs. In a still further representative embodiment, the neck portion of the cartridge member has first and second pairs of diametrically opposed lugs, wherein the first pair of lugs is disposed at a first height on the neck portion and the second pair of lugs is disposed at a second height on the neck portion.
  • The present disclosure is also directed to a representative filter cartridge which includes a body portion and a neck portion. The body portion of the cartridge encloses filter media for filtering a fluid which is passed therethrough. The neck portion communicates with the body portion and includes an inlet port for directing unfiltered fluid into the body portion and at least one outlet port for directing filtered fluid out of the body portion. The neck portion, presently preferably, has at least two lugs which depend radially outwardly therefrom, wherein at least one lug defines a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface. The keyed engagement surface enables the cartridge to mate with a compatible reception assembly and the trailing inclined cam surface facilitating the mating therewith.
  • In an alternative representative embodiment of the present disclosure, each lug defines a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface. Still further, it is envisioned that the keyed engagement surfaces defined on each lug of the cartridge member can be substantially similar or alternatively, they can be different.
  • Presently preferably, the neck portion of the cartridge member has a pair of diametrically opposed lugs. Alternatively, the neck portion of the cartridge member has three circumferentially spaced apart lugs. In a still further representative embodiment, the neck portion of the cartridge member has first and second pairs of diametrically opposed lugs, wherein the first pair of lugs is disposed at a first height on the neck portion and the second pair of lugs is disposed at a second height on the neck portion.
  • The present disclosure is also directed to a filter cartridge which includes a body portion for enclosing filter media for filtering a fluid and a neck portion which communicates with the body portion. The neck portion includes at least one axial inlet port for directing unfiltered fluid into the body portion, at least one axial outlet port for directing filtered fluid out of the body portion and a neck portion having at least two lugs depending radially outwardly therefrom.
  • Presently preferably, the at least one lug defines a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface, the keyed engagement surface enabling the cartridge to mate with a compatible reception assembly.
  • It is envisioned that the neck portion has first and second circumferential grooves formed therein which are adapted and configured for receiving an O-ring seal. The first circumferential groove is positioned between the at least one inlet port of the neck member and the body portion and the second circumferential groove is positioned between the at least one inlet port and the at least one outlet port. Alternatively, it is understood that the positions of the at least one inlet port and the at least one outlet port could be reversed and the filter cartridge would remain operative.
  • The present disclosure is also directed to a representative filter assembly which includes a replaceable cartridge, a head member, a valve and a support structure. The cartridge has a body portion for enclosing filter media and a neck portion that includes at least one axially extending inlet port for directing unfiltered fluid into the body portion and at least one axially extending outlet port for directing filtered fluid out of the body portion. The neck portion has at least two lugs depending radially outwardly therefrom, the at least one lug defining a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface.
  • These and other unique features of the representative lenticular filter cartridge assembly of the present disclosure and the method of constructing the same will become more readily apparent from the following description of the drawings taken in conjunction with the detailed description of the representative preferred embodiments.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • So that those having ordinary skill in the art to which the present disclosure appertains will more readily understand how to construct and use the filter cartridge assembly of the present disclosure, reference may be had to the drawings wherein:
  • FIG. 1 is a perspective view of a filter assembly constructed in accordance with a representative preferred embodiment of the present disclosure;
  • FIG. 2 is an exploded perspective view of the representative filter assembly of FIG. 1 with part separated for ease of illustration;
  • FIG. 3 is an enlarged perspective view of the representative upper portion of the representative filter assembly of FIG. 1 including the representative filter cartridge, representative support bracket and representative head member;
  • FIG. 4 is a cross-sectional view of the representative support bracket shown in FIG. 3 taken along line 4-4 of FIG. 3 illustrating the representative ramped camming surface formed thereon;
  • FIG. 5 is bottom end view of the representative valve member shown in FIG. 3 as viewed along line 5-5 of FIG. 3;
  • FIG. 6 is an elevational view of the representative valve member of FIG. 3, with a representative portion of the outer wall broken away to illustrate representative interior surface features thereof,
  • FIG. 7 is an elevational view of the representative valve member of FIG. 3, with a representative portion of the outer wall broken away and rotated 180° from the position shown in FIG. 6 to illustrate representative interior surface features thereof;
  • FIG. 8 is an elevational view of the representative upper portion of the filter cartridge and the valve member of FIG. 3, with the representative interlocking features thereof in axial alignment to facilitate the engagement therebetween;
  • FIG. 9 is an elevational view of the representative upper portion of the representative filter cartridge and the representative head member of FIG. 3, rotated 180° from the position shown in FIG. 8, with the representative interlocking features thereof in axial alignment to facilitate the engagement therebetween;
  • FIG. 10 is a perspective view of the representative upper portion of the representative filter assembly of the present disclosure, with the representative wall of the representative head and representative valve members broken away to illustrate the initial position of the representative keyed camming lug of the representative filter relative to the representative ramped camming surface of the representative bracket member, wherein the representative valve assembly with which the representative head member is associated is closed to flow;
  • FIG. 11 is a perspective view of the representative upper portion of the representative filter assembly of the present disclosure, with the representative wall of the representative head member broken away to illustrate the final position of the representative keyed camming lug of the representative filter relative to the representative ramped camming surface of the representative bracket member, wherein the representative valve assembly with which the representative head member is associated is open to flow;
  • FIG. 12 is a perspective view of the representative cylindrical neck portion of the representative filter cartridge of the present disclosure which includes camming lugs having a skeleton key formation;
  • FIGS. 13-17 illustrate a variety of different key configurations provided on the camming lugs formed on the representative cylindrical neck portion of the representative filter cartridge of the present disclosure;
  • FIGS. 18-20 illustrate each of the available key patterns for a representative camming lug having a maximum of four teeth positions;
  • FIGS. 21-27 illustrate each of the available key patterns for a representative camming lug having a maximum of five teeth positions;
  • FIGS. 28-40 illustrate each of the available key patterns for a representative camming lug having a maximum of six teeth positions;
  • FIG. 41 is a top plan view of the neck portion of a representative filter cartridge constructed in accordance with a preferred representative embodiment of the present disclosure which includes three circumferentially representative spaced camming lugs each having a different key formation thereon;
  • FIG. 42 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 41, taken along line 42-42;
  • FIG. 43 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 41, rotated 120° from the view shown in FIG. 42;
  • FIG. 44 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 41, rotated 120° from the view shown in FIG. 43;
  • FIG. 45 is a top plan view of the representative neck portion of a representative filter cartridge constructed in accordance with a preferred representative embodiment of the present disclosure which includes two sets of diametrically opposed camming lugs positioned at two different levels on the representative neck portion of the cartridge;
  • FIG. 46 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 45, taken along line 46-46;
  • FIG. 47 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 45, rotated 90° from the view shown in FIG. 46;
  • FIG. 48 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 45, rotated 90° from the view shown in FIG. 47;
  • FIG. 49 is a side elevational view of the representative neck portion of the representative filter cartridge of FIG. 45, rotated 90° from the view shown in FIG. 48;
  • FIG. 50 is a side elevational view in cross-section, of another representative filter assembly constructed in accordance with a preferred representative embodiment of the present disclosure wherein a representative ball valve is positioned within the assembly to inhibit the representative egress of fluid from the system when the filter cartridge is removed from the assembly, with the ball valve shown in an open position;
  • FIG. 51 is a side elevational view in cross-section, of the representative filter assembly of FIG. 50 with the ball valve shown in a closed position as the representative filter cartridge is removed from the assembly;
  • FIG. 52 is an exploded perspective view of another representative filter assembly constructed in accordance with a representative preferred embodiment of the present disclosure with the parts thereof separated for ease of illustration, including an annular insert in the form of a key ring having recesses designed to mate with corresponding surface features on the keyed cam lugs of a replacement filter cartridge;
  • FIG. 53 is a perspective view of the representative filter assembly of the FIG. 52 with the head portion in cross-section to illustrate the interior structure thereof;
  • FIG. 54 is an exploded perspective view of another representative filter assembly constructed in accordance with a preferred embodiment of the present disclosure with the parts separated for ease of illustration, which includes a valve member that may be rotated relative to a representative head portion of the representative filter assembly between an open position wherein fluid is permitted to flow through the representative filter assembly and a bypass position wherein unrestricted fluid flows through the filter head from inlet to outlet;
  • FIG. 55 is a perspective view of the assembled representative filter assembly of FIG. 54;
  • FIG. 56 is an enlarged perspective view of the upper portion of the replaceable filter cartridge shown in FIGS. 54-55, illustrating the structure of the neck portion thereof;
  • FIG. 57 is an enlarged perspective view of the area designated by the reference number 4 in FIG. 54, illustrating reception structures formed within the interior cavity of the valve member and configured for receiving cam lugs;
  • FIG. 58 is an enlarged perspective view of the upper portion of the representative filter assembly of FIG. 54 illustrating the insertion of the representative replaceable filter cartridge into the central aperture formed in the intermediate support flange;
  • FIG. 59 is an enlarged perspective view of the upper portion of the representative filter assembly of FIG. 54 having a portion of the representative head portion and of the representative valve member cut away for ease of illustration, wherein the representative valve member is in the “filter” position;
  • FIG. 60 is an enlarged perspective view of the upper portion of the representative filter assembly of FIG. 54 having a portion of the head portion and of the valve member cut away for ease of illustration, wherein the valve member is in the “bypass” position;
  • FIG. 61 is a cross-sectional view of the upper portion of the representative filter assembly of FIGS. 54-60 wherein the replaceable representative filter cartridge assembly is shown engaged within valve member and the valve member, in turn, is engaged within the head portion; and
  • FIGS. 62-64 are enlarged perspective views of the upper portion of the representative filter assembly of FIG. 54 illustrating disengagement of the replaceable representative filter cartridge assembly from the valve member.
  • These and other features of the representative filter assembly of the present disclosure will become more readily apparent to those having ordinary skill in the art form the following detailed description of the representative preferred embodiments.
  • DETAILED DESCRIPTION OF THE REPRESENTATIVE EMBODIMENTS
  • Referring now to the figures wherein like reference numerals identify similar structural elements of the filter assembly of the subject disclosure, there is illustrated in FIG. 1 a filter assembly constructed in accordance with a preferred representative embodiment of the subject disclosure and designated generally by reference numeral 10. Filter assembly 10 is configured for use in conjunction with a fluid processing system that includes an inlet conduit 12 for delivering unfiltered process fluid into the filter assembly and an outlet conduit 14 for delivering filtered process fluid from the filter assembly 10. Filter assembly 10 is preferably mounted to a supporting structure associated with the fluid processing system by a bracket 16.
  • Referring to FIG. 2, filter assembly 10 includes a unique rotary valve assembly 18 that consists of a head portion 20 defining an interior chamber having an inlet port 22 for communicating with inlet conduit 12 and an outlet port 24 for communicating with outlet conduit 14. Rotary valve assembly 18 further includes a valve member 26 configured for reception within the interior chamber of head portion 20 in such a manner so as to facilitate rotation of the valve member relative to the head portion between an open position wherein fluid is permitted to flow through the filter assembly and a closed position wherein flow through the filter assembly is restricted. (See FIGS. 10-11).
  • Valve member 26 includes an inlet orifice 32 for communicating with the inlet port 22 of head portion 20 and an outlet orifice 34 for communicating with the outlet port 24 of head portion 20. (See FIGS. 6-7). The body of valve member 26 includes recesses 36 a and 38 a for accommodating upper and lower O-ring seals 36 and 38. O-ring seal 36 serves to sealingly isolate the inlet flow from the outlet flow within the interior chamber of head portion 20 during operation, while O-ring seal 38 prevents leakage to atmosphere.
  • With continuing reference to FIG. 2, filter assembly 10 further includes a replaceable filter cartridge 40 constructed in accordance with a preferred representative embodiment of the present disclosure. Filter assembly 10 is adapted and configured to ensure that replacement cartridge 40 is compatible with the fluid processing system with which it is associated. Moreover, as discussed hereinbelow, the filter cartridge 40 and valve portion 26 are provided with keyed mating structures that ensure compatibility therebetween, and thus prevent the accidental or intentional installation of an incompatible or inferior replacement cartridge, which could jeopardize the integrity of the fluid processing system.
  • Referring to FIG. 3, replaceable filter cartridge 40 includes a generally cylindrical body portion 42 enclosing filter media for filtering process fluid. Those skilled in the art will readily appreciate that any one of a variety of different types of filter media could be enclosed within the body portion including, for example, pleated media, micro-fibers or carbon media. An end cap 44 encloses the body portion 42, and a cylindrical neck portion 46 depends from the end cap 44. Those skilled in the art will readily appreciate that the end cap 44 and body portion 42 can be joined together by sonic welding, spin welding or other similar methods known in the art. The neck portion 46 of filter cartridge 40 is adapted and configured for reception with the interior cavity of valve member 26 (see FIGS. 6-9) and includes an upper section 46 a and a lower portion 46 b. As would be understood by those skilled in the art, one of a plurality of possible alternative representative embodiments could include a replaceable filter cartridge 40 wherein there is no difference in the diameter of the cylindrical body portion 42 and the cylindrical neck portion 46, thus, there is no differentiation between the cylindrical body portion 42 and the cylindrical neck portion 46 and, thus, the location of the cam lugs 62 and 64 need only be operatively positioned on the replaceable filter cartridge 40 such that the filter cartridge 40 is operatively connected to the intermediate support flange 70 that depends from mounting bracket 16.
  • The upper section 46 a defines a radial inlet passage 52 for receiving unfiltered process fluid entering the valve member 26 through inlet orifice 32 and directing the fluid into the body portion 42 of filter cartridge 40. The upper section 46 a further defines an axial outlet passage 54 for delivering filtered process fluid from the interior of body portion 42 to the interior cavity of valve member 26 for egress through the outlet orifice 34 into the interior chamber of head portion 20. Those skilled in the art will readily appreciate that the inlet and outlet passages in the neck portion could be reversed such that the inlet flow is axial and the outlet flow is radial. The inlet and outlet passages 52 and 54 are sealingly isolated from one another by an upper O-ring seal 56 positioned at the upper end of neck portion 46. A second lower O-ring seal 58 is positioned below the radial inlet passage 52 to sealingly engage the neck portion 46 within the interior chamber of the valve member 26 and prevent the leakage of unfiltered process fluids from filter assembly 10 while in operation.
  • Referring to FIG. 2 in conjunction with FIG. 3, presently preferably, a pair of diametrically opposed inclined cam lugs 62 and 64 project radially outwardly from the lower section 46 b of neck portion 46. Cam lugs 62 and 64 are dimensioned and configured to facilitate rotational engagement of the filter cartridge within an intermediate support flange 70 that depends from mounting bracket 16. As best seen in FIG. 3, a central aperture 75 extends through support flange 70 for receiving the neck portion 46 of filter cartridge 40. A pair of diametrically opposed cam ramps 72 and 74 project radially into central aperture 75 for interacting with the inclined lower surfaces of cam lugs 62 and 64. The cam ramps 72 and 74 are spaced from one another to allow the cam lugs 62 and 64 to fit therebetween when the neck portion is extended through aperture 75 during assembly, and they are inclined along their arc length to facilitate rotational engagement of the filter cartridge with support flange 70, as illustrated in FIG. 4.
  • Referring to FIGS. 2 and 3, support flange 70 further includes a recessed seating area 76 defined by annular retaining wall 78 and configured to receive and retain the head portion 20 of filter assembly 10. Diametrically opposed arcuate retention ribs 82 and 84 project inwardly from retaining wall 78 to frictionally engage with corresponding ramped engagement struts 92 and 94 that project radially outwardly from the lower region of head portion 20 when the head portion 20 is rotatably engaged within the recessed seating area 76 during assembly. Stop surfaces 82 a and 84 a are associated with retention ribs 82 and 84, respectively, for limiting the movement of head portion 20 within seating area 76. In an alternate representative embodiment, the head portion 20 and support flange 70 may be adapted and configured to cooperate and engage with one another in a manner described hereinbelow with respect to filter assembly 800 and illustrated in FIGS. 52-53.
  • As best seen in FIGS. 1 and 2, the annular retaining wall 78 of support flange 70 is also configured to accommodate and support a shroud 90 which is configured to house and protect the rotary valve assembly 18 of filter assembly 10. As illustrated, the shroud 90 includes lateral apertures, i.e., aperture 92, for accommodating inlet and outlet conduits 12 and 14. Those skilled in the art will readily appreciate that the configuration of the shroud as well as the way in which it is joined to the support flange 70 could vary depending upon the nature of the operating environment within which the system is employed.
  • Referring to FIG. 5, in accordance with a presently preferred representative embodiment of the present disclosure, cam lugs 62 and 64 are adapted and configured for reception within a pair of corresponding diametrically opposed reception areas 102 and 104 formed within the interior cavity 25 of valve member 26. More particularly, the upper surface of each cam lug 62, 64 is provided with a unique key formation having, in this case, a plurality of spaced apart axially projecting teeth that are adapted and configured to engage and mate with a corresponding set of spaced apart recesses formed within the reception areas of the valve member 26. This mating arrangement is designed to ensure replacement cartridge compatibility by only permitting replacement of a filter cartridge having a keyed surface formation that corresponds with the surface features of the reception areas in the valve member.
  • In the exemplary representative embodiment of the disclosure illustrated in FIGS. 3-9, the key formation on each cam lug (62, 64) includes three spaced apart teeth (62 a-62 c, 64 a-64 c) and each reception area (102, 104) within the valve member 26 includes three corresponding recesses (102 a-102 c, 104 a-104 c) for accommodating the teeth when the neck portion 46 of cartridge 40 is received by valve member 26.
  • As discussed in greater detail hereinbelow, the number of teeth that define the key formation on each cam lug can vary within the scope of this disclosure (see for example FIGS. 18-40), as can the surface geometry of the key formation (see for example FIGS. 13-17). In each instance, the reception area in the rotary valve member would have a corresponding mating configuration to accommodate the key formation formed on the cam lugs. Furthermore, it is envisioned that the key configuration on one lug could be different from the key configuration of the opposed lug. This will dramatically increase the number of possible key combinations available to a filter manufacturer.
  • Referring to FIG. 10, when a compatible filter cartridge is introduced into the filter assembly 10 of the subject disclosure, the neck portion 46 of the filter cartridge 40 is inserted through the central aperture 75 of support flange 70, with the cam lugs 62 and 64 positioned between the diametrically opposed cam ramps 72 and 74. At such a time, the valve member 26 is in the “off” position to receive the neck portion 46. Thus, the inlet and outlet orifices 32, 34 of valve member 26 are not aligned with the inlet and outlet ports 42, 44 of head portion 20. Thereupon, the teeth (62 a-62 c, 64 a-64 c) forming the keyed engagement surface of cam lugs 62 and 64 extend into the corresponding recesses (102 a-102 c, 104 a-104 c) of recessed areas 102 and 104 and mate therewith.
  • Once the neck portion 46 of filter cartridge 40 has been intimately engaged within the interior chamber of valve member 26, the cartridge and valve member may be rotated in a counter-clockwise direction with respect to the support flange 70 and head portion 20, as illustrated in FIG. 11. Upon rotating filter cartridge 40 in conjunction with valve member 26, the cam lugs 62, 64 projecting from neck portion 46 translate against the cam ramps 72, 74, causing the filter cartridge 40 to move helically upwardly in an axial direction. As a result, valve member 26 is rotated into the “on” or open position, wherein the inlet and outlet orifices 32, 34 of the valve member 26 are aligned with the inlet and outlet ports 42, 44 of head portion 20 to allow fluid to flow through the filter assembly 10.
  • If the cam lugs of a replacement filter cartridge introduced into the system are not configured to mate with the reception areas of the valve member, i.e., if the cam lugs have no keyed surface formation, which may be indicative of an unauthorized after-market filter cartridge, the cam lugs will interfere with and be unable to engage the reception areas in the valve member. Consequently, because the inclined cam surfaces of the cam lugs 62, 64 will be located below the inclined surfaces of the cam ramps 72, 74, the cam lugs will be unable to traverse the cam ramps. As a result, the cam lugs will be unable to effect rotation of the valve member into the “on” position to permit fluid to flow through the assembly. This will ensure replacement cartridge compatibility by preventing the use of inferior or unauthorized replacement filter cartridges.
  • The key formation shown in the exemplary representative embodiment of FIGS. 3-11, corresponds to the key formation illustrated in FIG. 22, which is selected from a group of key formations having five available tooth positions. In the exemplary representative embodiment, the first, fourth and fifth teeth are present, while the second and third teeth are absent. Using the convention wherein the numeral “1” represents the presence of a tooth in a position of a key formation, and the numeral “0” represents the absence of a tooth in a position of the key formation, the key formation illustrated in FIGS. 3-11, and 22 may be represented by the numerical expression (1, 0, 0, 1, 1).
  • In accordance with a preferred representative embodiment of the subject disclosure, there exists a replacement cartridge that is provided with cam lugs having a surface formation that is compatible with a rotary valve member regardless of the number of recesses defined within the recessed areas formed therein. A cartridge having a neck portion with diametrically opposed cam lugs that include such a formation referred to herein as a skeleton key formation, is illustrated in FIGS. 2 and 12 and is designated generally by reference numerals 40 and 140 respectively.
  • Referring to FIG. 12, the cam lugs 162 and 164 of filter cartridge 140 includes a skeleton key formation defined by a tooth formation wherein only the first and fifth tooth positions are filled with teeth (i.e., teeth 162 a, 162 b). This skeleton key is represented by the numerical expression (1, 0, 0, 0, 1). It should be understood that, in a five position key formation, the first and fifth position will always be filled, and, conversely, the recessed areas of the valve member will always have a recess located in the complementary positions.
  • Table 2 below, sets forth the available tooth combinations for the five position key formation associated with the opposed cam lugs 162 and 164 of filter cartridge 140 and illustrated in FIGS. 3-11 and 21-27. In total, excluding the skeleton key formation of FIG. 12, there are seven available tooth configurations for a five position key formation. Table 1 below sets forth the available tooth configurations for the four position key formation associated with the opposed cam lugs 262 and 264 of filter cartridge 240 illustrated in FIGS. 18-20. In total, excluding the skeleton key formation which is not shown and is represented by the numerical expression (1, 0, 0, 1) there are three available tooth configurations for a four position key formation. Table 3 sets forth the available tooth configurations for the six position key formation associated with the opposed cam lugs 362 and 364 of replaceable filter cartridge 340 as illustrated in FIGS. 28-41. In total, excluding the skeleton key formation which is not shown and is represented by the numerical expression (1, 0, 0, 0, 0, 1) there are fifteen available tooth configurations for a six position key formation.
    TABLE 1
    Tooth Configurations
    (Four Positions) FIG.
    1, 1, 1, 1 18
    1, 1, 0, 1 19
    1, 0, 1, 1 20
  • TABLE 2
    Tooth Configurations
    (5 positions) FIG.
    1, 1, 1, 1, 1 21
    1, 0, 0, 1, 1 22
    1, 0, 1, 0, 1 23
    1, 1, 0, 1, 1 24
    1, 1, 1, 0, 1 25
    1, 0, 1, 1, 1 26
    1, 1, 0, 0, 1 27
  • TABLE 3
    Tooth Configurations
    (6 positions) FIG.
    1, 1, 1, 1, 1, 1 28
    1, 1, 0, 0, 0, 1 29
    1, 1, 1, 0, 0, 1 30
    1, 1, 1, 1, 0, 1 31
    1, 0, 0, 0, 1, 1 32
    1, 0, 0, 1, 1, 1 33
    1, 0, 1, 1, 1, 1 34
    1, 1, 0, 0, 1, 1 35
    1, 1, 0, 1, 1, 1 36
    1, 0, 1, 1, 0, 1 38
    1, 1, 0, 1, 0, 1 39
    1, 0, 1, 0, 1, 1 40
    1, 0, 1, 0, 0, 1 not shown
    1, 0, 0, 1, 0, 1 not shown
  • In summary, the number of available tooth combinations “N” for a given tooth configuration having “n” tooth positions can be expressed mathematically as follows:
    N=2n-2−1
  • The relatively large number of key configuration that are available though the keyed system of the subject disclosure will give original equipment manufactures the ability to provide customized filters for each of their appliances. Thus, each manufacturer could offer a unique set of replacement filter cartridge, with each cartridge in the set having a different keyed surface formation provided on the camming lugs thereof, for mating with corresponding reception areas in a valve member supported within a particular type of appliance.
  • Referring to FIGS. 13-17, there are illustrated a series of replacement filter cartridges constructed in accordance with a preferred representative embodiment of the subject disclosure each having a different keyed surface formation associated therewith. For example, FIGS. 13, 14, 16 and 17 illustrate filter cartridges 403, 404, 406, and 407, respectively, with cam lugs 463, 464, 466 and 467 having keyed surface formations with portions that project both radially outwardly from the lugs as well as in an axial direction. For example, cam lug 463 in FIG. 13 includes two teeth 463 a, 463 b which project axially and radially from the lug. Cam lug 464 in FIG. 14 includes two axially projecting teeth 464 a and 464 c and one tooth 464 b that project both radially and axially. FIG. 16 illustrates a cam lug 466 having an enlarged radially and axially projecting tooth 466 a and a smaller axially projecting tooth 466 b. Cam lug 467 in FIG. 17 includes two axially projecting teeth 467 a and 467 b and the majority of the cam lug itself project radially outwardly from the neck portion of the filter cartridge 407. In accordance with the subject disclosure, it follows that a compatible rotary valve member would have recessed areas with mating features that correspond to the radially and axially extending keyed surface formations of cam lugs 463, 464, 466 and 467.
  • FIG. 15, illustrates another replacement filter cartridge 405 constructed in accordance with a preferred representative embodiment of the subject disclosure wherein the keyed surface formation provided on the cam lug 465 thereof is defined by a curved surface 465 a. In accordance with the subject disclosure, a compatible valve member for filter cartridge 405 would have reception areas with a corresponding curved recesses to ensure compatibility with cartridge 405.
  • Referring to FIG. 41-44, there is illustrated another replacement filter cartridge constructed in accordance with a preferred representative embodiment of the subject disclosure and designated generally by reference numeral 540. Filter cartridge 540 includes three cam lugs 561, 562 and 563 that are circumferentially spaced apart about the periphery of neck portion 546. Each cam lug has a keyed surface formation thereon for mating with a corresponding recessed area of a compatible rotary valve member 26. As illustrated in FIGS. 42-44, the keyed surface formations of cam lugs 561-563 are derived from a five tooth configuration (see Table 2), and each cam lug has a different key pattern formed thereon. In particular, cam lug 561 has a first keyed surface formation that may be represented by the numerical expression (1, 0, 1, 0, 1), cam lug 562 has a second keyed surface formation that may be represented by the numerical expression (1, 0, 0, 1, 1), and cam lug 563 has a third keyed surface formation that may be represented by the numerical expression (1, 1, 0, 0, 1). It is also envisioned that cam lugs 561-563 could each have the same keyed surface formation provided thereon.
  • Referring to FIG. 45-49, there is illustrated another replacement filter cartridge constructed in accordance with a preferred representative embodiment of the subject disclosure and designated generally by reference numeral 640. Filter cartridge 640 includes two sets of diametrically opposed cam lugs that include cam lugs 661-664. The first set of opposed cam lugs 661, 663 are positioned at a first axial height on neck portion 646, and the second set of opposed cam lugs 662, 664 are positioned at a second axial height on neck portion 646. In addition, each cam lug has a keyed surface formation thereon for mating with a corresponding recessed area of a compatible rotary valve member 26. As illustrated in FIGS. 46-49, the keyed surface formations of cam lugs 661-664 are derived from a five tooth configuration (see Table 2). Cam lugs 661 and 664 have the same keyed surface formation thereon that may be represented by the numerical expression (1, 0, 0, 1, 1), while cam lugs 662 and 663 both have another keyed surface formation thereon that may be represented by the numerical expression (1, 1, 0, 0, 1). It is also envisioned that cam lugs 661-664 could each have the same keyed surface formation provided thereon, or, in the alternative, each cam lug could have a different keyed surface formation provided thereon.
  • Referring to FIGS. 50-51, there is illustrated another filter assembly constructed in accordance with a preferred representative embodiment of the subject disclosure and designated generally by reference numeral 700. Filter assembly 700 includes a head portion 720 enclosing a rotary valve member 726 that has a mechanism for minimizing leakage during cartridge replacement. The mechanism includes a floating check-ball 728 and an associated valve seat 730. As shown in FIG. 51, during normal service, when process fluid is flowing through the system, the outlet flow pressure of the filtered fluid causes the check-ball 728 to remain in an unseated position. In contrast, when the neck portion 46 of a replacement filter cartridge 40 is removed from the interior bore of valve member 726, and the outlet flow pressure is terminated, the check-ball 728 becomes seated in valve seat 730, as shown in FIG. 51. As a result, the void volume within head portion 720 is restricted from flowing out of valve member 726.
  • Referring now to FIGS. 52-53, there is illustrated another filter assembly constructed in accordance with a preferred representative embodiment of the subject disclosure and designated generally by reference numeral 800. Filter assembly 800 differs from the previously described representative embodiments of the subject disclosure in that the assembly does not include a rotary valve member, such as the valve member 18 of filter assembly 10. Instead, as best seen in FIG. 53, filter assembly 800 includes a head portion 820 with an interior bore 825 having a lower region 825 a configured to support an annular insert in the form of a key ring 818. Key ring 818 defines diametrically opposed reception areas 802, 804 for mating with corresponding keyed surface formations on the cam lugs 62, 64 formed on the neck portion 26 of a replacement filter cartridge 40, for example. In accordance with the subject disclosure, to ensure the integrity of the system with which filter assembly 800 is associated, a compatible replacement cartridge must have cam lugs with keyed surface formations that mate with the recessed areas of the key ring 818. Referring to FIG. 52, filter assembly 800 further includes a mounting bracket 816 having a support flange 870 depending therefrom for facilitating rotational engagement of a replacement filter cartridge 40 with head member 820 and the associated key ring 818. A central aperture 875 extends through support flange 870 to receive the neck 46 of filter cartridge 40, and a pair of diametrically opposed cam raps 872 and 874 project radially into central aperture 875 for operatively interacting with the inclined lower surfaces of cam lugs 62, 64 when filter cartridge 40 is engaged with head portion 820. Support flange 870 further includes a recessed seating area 876 defined by an annular retaining wall 878 configured to receive and retain the head portion 820. More particularly, head portion 820 includes a pair of diametrically opposed ramped cam struts 882 and 884 for operatively engaging a pair of diametrically opposed retention flanges 892 and 894 projecting radially inwardly from the retaining wall 878. In addition, ratchet nibs 882 a and 884 a project outwardly from the lower region of head portion 820 for engagement within corresponding notches 892 a and 894 a formed in retention flanges 892 and 894, respectively. Those skilled in the art will readily appreciate that the way in which head portion 820 and support flange 870 interact and engage may also be employed in conjunction with the-filter assembly 10 described hereinabove, whereby head portion 20 and support flange 70 would be adapted and configured to interact and engage in a substantially similar manner.
  • To assemble the filter assembly 800 of the subject disclosure, a key ring 818 having particular configuration of recesses, which may be selected from a set of key rings each having different recess configurations, is first inserted into the lower region 825a of interior bore 825 of head potion 820. The head portion is then rotatably engaged within the seating area 876 of support flange 870. Thereafter, a filter cartridge 40 is brought into approximation with the head portion 820 by inserting the neck portion 46 of the cartridge through the central aperture 875 of support flange 870, allowing the camming lugs 62, 64 to pass between the opposed cam ramps 872, 874 projecting radially into aperture 875. At such a time, the keyed surface formations of the cam lugs 62, 64 mate with the corresponding recessed areas 802, 804 in key ring 818, provided of course that the cartridge and key ring are compatible with one another. Once the cam lugs 62, 64 are mated with the recessed areas 802, 804, the filter cartridge 40 is rotated through an arc of approximately 90°, such that the inclined lower surfaces of cam lugs 62, 64 translate relative to cam ramps 872, 874. This relative movement causes the key ring 818 to rotate within interior bore region 825a and causes the neck portion 46 of filter cartridge 40 to move axially into the upper region 825 b of the interior bore 825 of head portion 820, until such time as the neck portion of the filter cartridge is sealingly received therein.
  • It should be noted that provision is made such that key ring 818 will rotate through a limited travel range relative to the head portion 820 as filter cartridge 40 is rotated into engagement with head portion 820. Furthermore, since a rotary valve member is not utilized with head portion 820, the upper region 825 b of interior bore 825 is dimensioned and configured to directly mate with the neck portion 46 of filter cartridge 40, such that the inlet port 52 in neck portion 46 is in direct fluid communication with the radial inlet port 812 of head portion 820 and the axial outlet port 54 in neck portion 46 is in direct fluid communication with the radial outlet port 814 of head portion 820.
  • Referring now to FIGS. 54-64, there is illustrated yet another filter assembly constructed in accordance with a preferred representative embodiment of the subject disclosure and designated generally by reference numeral 900. Similarly to filter assembly 10, filter assembly 900 is configured for use in conjunction with a fluid processing system that includes an inlet conduit 912 for delivering unfiltered process fluid into the filter assembly and an outlet conduit 914 for delivering filtered process fluid from the filter assembly 900. Filter assembly 900 is preferably mounted to a supporting structure associated with the fluid processing system by a bracket 916.
  • Referring to FIG. 54, filter assembly 900 includes a unique rotary valve assembly 918 that includes a head portion 920 defining an interior chamber having an inlet port 922 for communicating with inlet conduit 912 and an outlet port 924 for communicating with outlet conduit 914. Rotary valve assembly 918 further includes a valve member 926 configured for reception within the interior chamber of head portion 920 in such a manner so as to facilitate rotation of the valve member 926 relative to the head portion 920 between an open position wherein fluid is permitted to flow through the filter assembly and a bypass position wherein unrestricted fluid flows through the filter head from inlet to outlet. (See FIGS. 59-60).
  • Valve member 926 includes an inlet orifice 932 for communicating with the inlet port 922 of head portion 920 and an outlet orifice 934 for communicating with the outlet port 924 of head portion 920. (See FIG. 61) The body of valve member 926 includes a recess 931 a, shown in FIG. 61, surrounding the inlet orifice 932 for accommodating an O-ring seal 931, also shown in FIG. 61, which serves to facilitate fluid-tight junction of the inlet orifice 932 and the inlet port 922. The valve member 926 also has a recess 933 a surrounding the outlet orifice 934 for accommodating an O-ring seal 933, shown in FIG. 61, which serves to facilitate fluid-tight junction of the outlet orifice 934 and the outlet port 924. The body of the valve member 926 further includes a recess 938 a for accommodating an O-ring seal 938 (See FIGS. 61-64). The O-ring seal 938 serves to facilitate sealing engagement of the valve member 926 within the interior chamber of head portion 920 and to prevent leakage of the process fluid to atmosphere.
  • With continuing reference to FIG. 54, filter assembly 900 further includes a replaceable filter cartridge 940 constructed in accordance with a preferred representative embodiment of the subject disclosure. Filter assembly 900 is adapted and configured to ensure that replacement cartridge 940 is compatible with the fluid processing system with which it is associated. Moreover, as discussed hereinbelow, the filter cartridge 940 and valve member 926 are provided with keyed mating structures that ensure compatibility therebetween, and thus prevent the accidental or intentional installation of an incompatible or inferior replacement cartridge, which could jeopardize the integrity of the fluid processing system.
  • Referring to FIGS. 54-56 and 61, replaceable filter cartridge 940 includes a generally cylindrical body portion 942 enclosing filter media for filtering process fluid. Those skilled in the art will readily appreciate that any one of a variety of different types of filter media could be enclosed within the body portion including, for example, pleated media, micro-fibers or carbon media. The body portion 942 includes a top cap 944, which preferably forms an integral part of the body portion 942. Alternatively, those skilled in the art will readily appreciate that the top cap 944 and body portion 942 may be formed separately and then joined together by sonic welding, spin welding or other similar methods known in the art. The top cap 944 has a neck portion 946 depending therefrom. The neck portion 946 of filter cartridge 940 is adapted and configured for reception within the interior cavity of valve member 926 (See FIGS. 54, 56, 58-61) and includes an upper section 946 a and a lower portion 946 b.
  • Referring again to FIG. 54, the neck portion 946 defines a plurality of axial passages 952. The upper section 946 a preferably also defines a plurality of sloped axially-aligned protrusions 951, which project radially outwardly from the upper section 946 a, for dividing the flow of fluid entering the axial passages 952. Thus, in an exemplary preferred representative embodiment of the subject disclosure, unfiltered process fluid enters the interior chamber of the valve member 926 through the inlet orifice 932, flows between the protrusions 951 and through the axial passages 952, and then enters the body portion 942 (see FIG. 55) of the filter cartridge 940. The upper section 946 a further defines an axial outlet passage 954 for delivering filtered process fluid from the interior of body portion 942 to the interior cavity of valve member 926 for egress through the outlet orifice 934 and the port 924 out of the head portion 920. Those skilled in the art will readily appreciate that the direction/orientation of the inlet and outlet passages in the neck portion 946 could be reversed. The inlet and outlet passages 952 and 954 are sealingly isolated from one another by an upper O-ring seal 956 positioned at the upper end of neck portion 946 (see FIG. 61). A second lower O-ring seal 958 is positioned below the inlet of the radial passages 952 to sealingly engage the neck portion 946 within the interior chamber of the valve member 926 and prevent the leakage of unfiltered process fluids from filter assembly 900 while in operation.
  • Referring to FIG. 54 in conjunction with FIGS. 56 and 58, a pair of diametrically opposed cam lugs 962 and 964 project radially outwardly from the lower section 946 b of neck portion 946. Cam lugs 962 and 964 are dimensioned and configured to facilitate rotational engagement of the filter cartridge within an intermediate support flange 970 that depends from mounting bracket 916. As best seen in FIG. 54, a central aperture 975 extends through support flange 970 for receiving the neck portion 946 of filter cartridge 940. A pair of diametrically opposed cam ramps 972 and 974 project radially into central aperture 975 for interacting with the lower surfaces of cam lugs 962 and 964. The cam ramps 972 and 974 are spaced from one another to allow the cam lugs 962 and 964 to fit therebetween when the neck portion is extended through aperture 975 during assembly. As best illustrated in FIG. 56, each cam lug, 962 and 964, includes a leading inclined surface 963. Leading inclined surface 963 is adapted and configured to facilitate rotational engagement of the filter cartridge with the cam ramps 972 and 974 of the support flange 970, as illustrated in FIGS. 58-60 and 62-64.
  • Referring to FIGS. 54 and 61, support flange 970 further includes a recessed seating area 976 defined by annular retaining wall 978 and configured to receive and retain the head portion 920 of filter assembly 900. Diametrically opposed arcuate retention ribs 982 and 984 project inwardly from retaining wall 978 to frictionally engage with corresponding engagement struts 992 and 994 (see FIG. 61) that project radially outwardly from the lower region of head portion 920, when the head portion 920 is rotatably engaged within the recessed seating area 976 during assembly. In an alternate representative embodiment of the subject disclosure, the head portion 920 and support flange 970 may be adapted and configured to cooperate and engage with one another in a manner described herein with respect to filter assembly 800 and as illustrated in FIGS. 52-53.
  • Similarly to filter assembly 10, and as illustrated in FIGS. 1 and 2, the annular retaining wall 978 of support flange 970 may be also configured to accommodate and support a shroud (not shown), such as the shroud 90, for housing and protecting the rotary valve assembly 918 of filter assembly 900. Also in a like manner to cam lugs 62 and 64 of filter assembly 10, see, e.g., FIGS. 2 and 3, cam lugs 962 and 964 (See FIGS. 54 and 56) may be adapted and configured for reception within a pair of corresponding diametrically opposed reception areas 1002 and 1004, best shown in FIG. 57, formed within the interior cavity 925 of valve member 926. As discussed in connection with other preferred representative embodiments of the subject disclosure, the upper surface of each cam lug 962, 964 is provided with a unique key formation having, in this exemplary representative embodiment, a plurality of spaced apart axially projecting teeth that are adapted and configured to engage and mate with a corresponding set of spaced apart recesses formed within the reception areas 1002 and 1004 of the valve member 926. This mating arrangement is designed to ensure replacement cartridge's compatibility by only permitting replacement of a filter cartridge having a keyed surface formation that corresponds to the surface features of the reception areas in the valve member.
  • In the exemplary representative embodiment of the disclosure illustrated in FIGS. 54-64, the key formation on each cam lug (962, 964) includes three spaced apart teeth (962 a-962 c, 964 a-964 c). Other configurations of the key formation may also be used, e.g., those described herein. Referring to FIG. 57, the exemplary representative embodiment shown in FIGS. 54-64, the reception areas, 1002 and 1004, also include a rib member 1006. As discussed in greater detail with respect to filter assembly 10, the two corresponding reception areas would typically include corresponding recesses for each spaced apart tooth formed on the cam lugs. In this exemplary representative embodiment of the subject disclosure, only a single recess is provided with rib member 1006. This configuration for the reception areas is more representative of a skeleton key formation. However, those skilled in the art would readily appreciate that the reception area configurations previously disclosed with respect to alternative embodiments of the present disclosure can be applied to filter assembly 900.
  • As discussed in greater detail hereinbefore, the number of teeth that define the key formation on each cam lug (962, 964) can vary within the scope of this disclosure (see for example FIGS. 18-40), as can the surface geometry of the key formation (see for example FIGS. 13-17). In each instance, the reception areas (1002, 1004) in the rotary valve member 926 would have a corresponding mating configuration to accommodate the key formation formed on the cam lugs. Furthermore, it is envisioned that the key configuration on one lug could be different from the key configuration of the opposed lug. This will dramatically increase the number of possible key combinations available to a filter manufacturer.
  • Referring to FIGS. 54-61, when a compatible filter cartridge is introduced into the filter assembly 900, the neck portion 946 of the filter cartridge 940 is inserted through the central aperture 975 of support flange 970, with the cam lugs 962 and 964 positioned between the diametrically opposed cam ramps 972 and 974 (See FIG. 54). At such a time, the valve member 926 should be in the bypass position to receive the neck portion 946 (See FIG. 60).ln that position, the inlet and outlet orifices 932, 934 of valve member 926 are not aligned with the inlet and outlet ports 922, 924 of head portion 920. In that configuration, the process fluid entering the inlet port 922 flows into the interior chamber of the head portion 920 and around the outer surface of the valve member 926. Sealing engagement of the valve member 926 within the head portion 920, e.g., facilitated by the O-ring seal 938, prevents leakage of the process fluid flowing around the valve member 926 into atmosphere
  • Referring to FIGS. 56, 58 and 62-64, thereupon, the teeth (962 a-962 c, 964 a-964 c) forming the keyed engagement surface of cam lugs 962 and 964 are positioned into the corresponding reception areas 1002 and 1004 and are caused to mate therewith. During the insertion of neck portion 946, trailing inclined surfaces 965 (See FIG. 56), which are associated with cam lugs 962 and 964, are adapted and configured for engagement with inclined surfaces 1008 formed in reception areas 1002 and 1004. The formation of trailing and leading inclined surfaces 963 and 965 on cam lug 962 and 964 facilitates the rotational engagement of the filter cartridge 940 with the support flange 970 and the opening of valve member 926.
  • Once the neck portion 946 of filter cartridge 940 has been intimately engaged within the interior cavity 925 of valve member 926, the cartridge and valve member may be rotated, e.g., presently preferably, in a counter-clockwise direction from the filter position illustrated in FIG. 59 to the bypass position illustrated in FIG. 60, with respect the support flange 970 and head portion 920. Upon rotating filter cartridge 940 in conjunction with valve member 926, the cam lugs 962, 964 projecting from neck portion 946 translate against the cam ramps 972, 974, causing the filter cartridge 940 to move helically upwardly in an axial direction. As a result, valve member 926 is rotated into the “on” or open position, wherein the inlet and outlet orifices 932, 934 of the valve member 926 are aligned with the inlet and outlet ports 922, 924, respectively, of head portion 920 to allow fluid to flow through the filter assembly 900. FIG. 61 illustrates an assembled filter assembly according to an exemplary preferred representative embodiment of the subject disclosure, wherein filter cartridge 940 is engaged with support flange 970 and valve member 926 is in the open position.
  • If the cam lugs of a replacement filter cartridge introduced into the system are not configured to mate with the reception areas of the valve member, i.e., if the cam lugs have no keyed surface formation, which may be indicative of an unauthorized after-market filter cartridge, the cam lugs will interfere with and be unable to engage the reception areas in the valve member. Consequently, because the cam lugs 962, 964 will be located below the inclined surfaces of the cam ramps 972, 974, the cam lugs will be unable to traverse the cam ramps. As a result, the cam lugs will be unable to effect rotation of the valve member into the “on” position to permit fluid to flow through the assembly. This will ensure replacement cartridge compatibility by preventing the use of inferior or unauthorized replacement filter cartridges.
  • Referring now to FIGS. 62-64, which illustrate the interaction of the cam lugs 962, 964 (opposite side, not shown) with the corresponding reception areas 1002 and 1004 formed in the interior cavity of valve member 926. In FIG. 62 the neck portion 946 of filter cartridge 940 is fully inserted into the interior cavity 925 of valve member 926 and cam lugs 962, 964 are positioned within reception areas 1002 and 1004. Upon imparting a clockwise rotation to filter cartridge 940, as shown in FIGS. 63-64, trailing inclined surfaces 965 contact inclined surfaces 1008 formed in reception areas 1002, 1004 and slide along the inclined surfaces 1008, so that filter cartridge 940 is forced in a downward direction until it is disengaged from within the interior cavity 925 of valve member 926. At the same time, valve member 926 rotates from an open position to a“bypass” position within head portion 920. Conversely, upon insertion of filter cartridge 940 into the interior cavity of valve member 926, trailing inclined surfaces 965 contact the inclined surfaces 1008 formed in reception areas 1002. The inclined surfaces 965 slide along the inclined surfaces 1008 when the filter cartridge 940 is rotated in a counter-clockwise direction, so that filter cartridge 940 is forced to move in an upward direction and engagement with support flange 970 is, thus, facilitated.
  • Although the disclosed fluid filtration apparatus has been described with respect to exemplary, representative, presently preferred embodiments, it is apparent that modifications and changes can be made thereto without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (18)

  1. 1. A filter cartridge comprising:
    a) a body portion for enclosing filter media for filtering a fluid; and
    b) a neck portion including at least one inlet port for directing unfiltered fluid into the body portion and at least one outlet port for directing filtered fluid out of the body portion, the filter cartridge having at least two lugs depending radially outwardly therefrom, at least one lug defining a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface, the keyed engagement surface enabling the cartridge to mate with a compatible reception assembly and the trailing inclined cam surface facilitating the mating therewith.
  2. 2. The filter cartridge of claim 1, wherein each lug comprises a keyed engagement surface,
    a leading inclined cam surface; and
    a trailing inclined cam surface.
  3. 3. The filter cartridge of claim 2, wherein the keyed engagement surface is substantially similar.
  4. 4. The filter cartridge of claim 2, wherein the keyed engagement surface is different.
  5. 5. The filter cartridge of claim 1, wherein the neck portion includes a pair of diametrically opposed lugs.
  6. 6. The filter cartridge of claim 1, wherein the neck portion includes three circumferentially spaced apart lugs.
  7. 7. The filter cartridge as recited in claim 1, wherein the neck portion includes first and second pairs of diametrically opposed lugs, wherein the first pair of lugs is disposed at a first height on the neck portion and the second pair of lugs is disposed at a second height on the neck portion.
  8. 8. The filter cartridge of claim 1, wherein the at least one lug has an axially facing surface and the keyed engagement surface is operatively positioned on the axially facing surface.
  9. 9. The filter assembly of claim 1, wherein the neck portion of the cartridge member includes a first surface axially facing surface having the at least one inlet port formed therein.
  10. 10. The filter assembly of claim 1, wherein the neck portion of the cartridge member includes a second surface axially facing surface having the at least one outlet port formed therein.
  11. 11. A filter cartridge comprising:
    a) a body portion for enclosing filter media for filtering a fluid; and
    b) a neck portion including at least one axial inlet port for directing unfiltered fluid into the body portion and at least one axial outlet port for directing filtered fluid out of the body portion, the filter cartridge having at least two lugs operatively positioned thereon and depending radially outwardly therefrom.
  12. 12. The filter cartridge of claim 11, wherein the at least one lug comprises:
    a keyed engagement surface; and
    a leading inclined cam surface and a trailing inclined cam surface, the keyed engagement surface enabling the cartridge to mate with a compatible reception assembly.
  13. 13. The filter cartridge of claim 11, wherein the neck portion comprises:
    first and second circumferential grooves formed therein which are adapted and configured for receiving an O-ring seal, the first circumferential groove 5 being positioned between the at least one inlet port of the neck member and the body portion and the second circumferential groove being positioned between the at least one inlet port and the at least one outlet port.
  14. 14. The filter cartridge of claim 1 wherein the neck portion has at least two lugs depending radially outwardly therefrom.
  15. 15. The filter assembly of claim 1 wherein the body portion has least two lugs depending radially outwardly therefrom.
  16. 16. The filter cartridge of claim 11 wherein the neck portion has at least two lugs depending radially outwardly therefrom.
  17. 17. The filter assembly of claim 11 wherein the body portion has least two lugs depending radially outwardly therefrom.
  18. 18. A filter assembly comprising:
    a) a cartridge member including a body portion for enclosing filter media and a neck portion including at least one inlet port for directing unfiltered fluid into the body portion and at least one outlet port for directing filtered fluid out of the body portion, the filter assembly having at least two lugs depending radially outwardly operatively positioned thereon, at least one lug defining a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface;
    b) a head member defining an axial chamber and including inlet and outlet passages which communicate with the axial chamber; and
    c) a support member, operatively disposed between the head member and the cartridge member, the support member including an aperture for receiving the neck portion of the cartridge member, the aperture having an inner surface defining at least two cam ramps for interacting with the leading inclined cam surface formed on at least one of the lugs to facilitate engagement of the lugs of the cartridge member with the support member.
US11187734 2000-04-20 2005-07-22 Keyed filter assembly Abandoned US20050252841A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US09553982 US6458269B1 (en) 2000-04-20 2000-04-20 Keyed filter assembly
US10208492 US20020185425A1 (en) 2000-04-20 2002-07-30 Keyed filter assembly
US10734498 US6949189B2 (en) 2000-04-20 2003-12-12 Keyed filter assembly
US11187734 US20050252841A1 (en) 2000-04-20 2005-07-22 Keyed filter assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11187734 US20050252841A1 (en) 2000-04-20 2005-07-22 Keyed filter assembly

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US10734498 Division US6949189B2 (en) 2000-04-20 2003-12-12 Keyed filter assembly

Publications (1)

Publication Number Publication Date
US20050252841A1 true true US20050252841A1 (en) 2005-11-17

Family

ID=34710443

Family Applications (2)

Application Number Title Priority Date Filing Date
US10734498 Active 2020-07-12 US6949189B2 (en) 2000-04-20 2003-12-12 Keyed filter assembly
US11187734 Abandoned US20050252841A1 (en) 2000-04-20 2005-07-22 Keyed filter assembly

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US10734498 Active 2020-07-12 US6949189B2 (en) 2000-04-20 2003-12-12 Keyed filter assembly

Country Status (6)

Country Link
US (2) US6949189B2 (en)
EP (1) EP1689507B1 (en)
JP (1) JP2007513761A (en)
KR (1) KR101177950B1 (en)
CN (1) CN100482311C (en)
WO (1) WO2005061073A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070199876A1 (en) * 2005-07-20 2007-08-30 3M Innovative Properties Company Fluid filtration system
US20070284296A1 (en) * 2006-06-08 2007-12-13 Paragon Water Systems Filter cartridge and head assembly with internal shutoff valve
WO2009005499A1 (en) * 2007-07-02 2009-01-08 Paragon Water Systems Filter cartridge and head assembly with internal shutoff valve
WO2009039471A1 (en) 2007-09-21 2009-03-26 Robert Lisenko Locking filter assembly
WO2010017003A2 (en) 2008-08-08 2010-02-11 Kx Technologies Llc Push filter with floating key lock
WO2010033470A3 (en) * 2008-09-16 2010-06-17 3M Innovative Properties Company Filter cartridge and system using linear actuation
US7837876B2 (en) 2004-10-28 2010-11-23 Paragon Water Systems, Inc. Water purifying apparatuses
US8356716B1 (en) * 2011-09-15 2013-01-22 Whirlpool Corporation Filter unit
EP2570166A2 (en) 2011-09-15 2013-03-20 Whirlpool Corporation Water filter system with an electronic interface and method of installing a filter unit
US8580109B2 (en) * 2011-09-15 2013-11-12 Whirlpool Corporation Electronic interface for water filter system
US8950052B2 (en) * 2011-09-15 2015-02-10 Whirlpool Corporation Method of installing a filter unit
CN106714926A (en) * 2014-10-13 2017-05-24 康明斯滤清系统知识产权公司 Spin-on filter for suction-side and pressure-side applications in filtration systems
US9937451B2 (en) 2011-09-15 2018-04-10 Whirlpool Corporation Filter unit
US10010820B1 (en) 2011-09-15 2018-07-03 Whirlpool Corporation Water filter system

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6458269B1 (en) * 2000-04-20 2002-10-01 Cuno Incorporated Keyed filter assembly
US7407148B2 (en) * 2000-04-20 2008-08-05 3M Innovative Properties Company Rotary valve assembly for fluid filtration system
US20040055946A1 (en) * 2002-09-20 2004-03-25 Sid Harvey Industries, Inc. Dual filtration system
US8119002B2 (en) 2003-12-22 2012-02-21 Donaldson Company, Inc. Liquid filter assembly; and methods
EP1781396B1 (en) 2004-06-29 2011-10-05 Donaldson Company, Inc. Liquid filter arrangement
DE102005007022A1 (en) * 2005-02-15 2006-10-26 Mann + Hummel Gmbh filtering device
US7481926B2 (en) * 2005-02-15 2009-01-27 Mann & Hummel Gmbh Filter device
EP1888199B1 (en) 2005-05-16 2012-09-12 3M Innovative Properties Company Spool valve manifold interconnect for a filter system
US20070199879A1 (en) * 2006-01-10 2007-08-30 Bors Mark S Water filter assembly
US20070158258A1 (en) * 2006-01-11 2007-07-12 Martin Blaze Multiple flow integral filtration manifold
US8252173B2 (en) * 2006-04-05 2012-08-28 Aquis Wasser-Luft-Systeme Gmbh, Lindau Zweigniederlassung Rebstein Water filter cartridge system having a combined blending valve system in the candle and adjusting device in the head
DE102006044744B4 (en) 2006-09-20 2017-11-02 Aquis Wasser-Luftsysteme GmbH Lindau, Zweigniederlassung Rebstein Water filter device with encryption structure
KR20080083903A (en) * 2007-03-13 2008-09-19 삼성전자주식회사 Water purifying device
DE202007008473U1 (en) * 2007-06-13 2008-10-23 Mann+Hummel Gmbh Filter device, in particular liquid filter
WO2009018454A3 (en) 2007-08-02 2011-04-14 Donaldson Company, Inc. Crankcase ventilation filter assembly; components; and, methods
GB0715247D0 (en) 2007-08-04 2007-09-12 Parker Hannifin Ltd Filter assembly
US7776215B2 (en) 2007-08-15 2010-08-17 Cummins Filtration Ip, Inc. Flow control valve with plate spring force actuation
US7959714B2 (en) 2007-11-15 2011-06-14 Cummins Filtration Ip, Inc. Authorized filter servicing and replacement
EP2092970B1 (en) 2008-02-08 2011-05-18 ARGO-HYTOS GmbH Filter device for filtering a liquid
US7695619B2 (en) * 2008-03-21 2010-04-13 Pentair Filtration, Inc. Modular drinking water filtration system with adapter rings for replaceable cartridges to assure proper fit
US7540956B1 (en) * 2008-03-21 2009-06-02 Pentair Filtration, Inc. Modular drinking water filtration system with removable and replaceable RO spindle
US20090236277A1 (en) * 2008-03-21 2009-09-24 Pentair Filtration, Inc. Modular Drinking Water Filtration System with Internal Sealing Between Valve Spindle and Head
EP2355914B1 (en) 2008-09-05 2014-06-11 3M Innovative Properties Company Filtration system
WO2010053903A3 (en) 2008-11-04 2010-08-05 3M Innovative Properties Company Fluid interconnect
US20100155321A1 (en) * 2008-12-23 2010-06-24 Sasur Timothy M Filter assembly
EP3085427A1 (en) 2009-03-31 2016-10-26 Donaldson Company, Inc. Liquid filter assembly and liquid filter cartridge
GB0919485D0 (en) * 2009-11-06 2009-12-23 Magnom Corp Ltd Filter assembly
KR101746248B1 (en) 2009-11-20 2017-06-12 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Filter cartridge with anti-drip feature
CN102728293A (en) * 2010-10-04 2012-10-17 特洁安科技有限公司 Sleeve holder assembly
US9821258B2 (en) 2011-01-18 2017-11-21 Parker-Hannifin Corporation Filter element wave seal gland
US8916044B2 (en) * 2011-01-18 2014-12-23 Parker-Hannifin Corporation Filter element wave gland seal
EP2667956A1 (en) 2011-01-24 2013-12-04 3M Innovative Properties Company Filter cartridges and manifolds for linear motion installation
WO2012178179A3 (en) * 2011-06-23 2013-03-28 Apiqe Inc. Disposable filter cartridge for water dispenser
US20130240418A1 (en) * 2012-03-19 2013-09-19 Cummins Filtration Ip, Inc. Filter Interface Security System
US20150202556A1 (en) * 2013-01-09 2015-07-23 Cummins Filtration Ip, Inc. Filter cartridge with flow passage in endplate
EP2988845A4 (en) 2013-01-21 2017-06-28 Aquasana Inc. Liquid filtration systems, components, and methods
CN105683556B (en) 2013-10-08 2018-08-10 派克汉尼芬公司 The filter element having a corrugated seal
DE102014102794B4 (en) 2014-03-03 2018-05-03 Fsp Fluid Systems Partners Holding Ag Filter device for filtering a hydraulic fluid,
USD750738S1 (en) 2014-10-23 2016-03-01 Michael T. Baird Set of mounting lugs for a water filter
USD750739S1 (en) 2014-11-05 2016-03-01 Michael T. Baird Set of mounting lugs for a water filter
US10035086B2 (en) * 2015-05-11 2018-07-31 Cummins Filtration Ip, Inc. Filter cartridge for clean servicing
US10071326B2 (en) 2015-09-11 2018-09-11 3M Innovative Properties Inc. Filter cartridge for translational insertion and rotational engagement of a manifold
KR101788965B1 (en) * 2016-03-22 2017-10-20 엘지전자 주식회사 water purifing apparatus refrigerator

Citations (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US444020A (en) * 1891-01-06 Stove-truck
US2338291A (en) * 1941-07-21 1944-01-04 Imp Brass Mfg Co Two-way strainer
US2991885A (en) * 1957-07-15 1961-07-11 New York Business Dev Corp Oil filter unit
US3529515A (en) * 1967-05-24 1970-09-22 Bobst Fils Sa J Folding apparatus for a cardboard blank
US3746171A (en) * 1971-07-21 1973-07-17 J Thomsen Filter assembly
US3914176A (en) * 1974-05-06 1975-10-21 Clark Equipment Co Dual filter assembly
US4006752A (en) * 1975-10-24 1977-02-08 Everpure, Inc. Control for fluid flow system
US4271020A (en) * 1979-10-22 1981-06-02 Ryder International Corporation Valve for filter device
US4363829A (en) * 1979-08-27 1982-12-14 Fuji Photo Film Co., Ltd. Process for forming an electrically conductive film
US4396512A (en) * 1979-06-01 1983-08-02 Everpure, Inc. Bacteriostatic filter media
US4437499A (en) * 1981-05-11 1984-03-20 Everpure, Inc. Computer controlled sensor for beverage dispenser
US4515692A (en) * 1983-05-06 1985-05-07 Water Soft, Inc. Water filter
US4529514A (en) * 1983-12-19 1985-07-16 Oil-Rite Corporation Filter assembly with shut off and filter element therefor
US4548227A (en) * 1982-09-30 1985-10-22 Everpure, Inc. Chemical feeder device
US4556484A (en) * 1983-07-05 1985-12-03 Teledyne Industries, Inc. Water filters
US4594361A (en) * 1984-11-26 1986-06-10 Everpure, Inc. Stabilized polybromide resins and method of preparation
US4645601A (en) * 1984-08-31 1987-02-24 Everpure, Inc. Quick change reverse osmosis assembly
US4654142A (en) * 1985-11-18 1987-03-31 Everpure, Inc. Filtering system
US4725354A (en) * 1986-03-07 1988-02-16 Everpure, Inc. Filtering system
US4731183A (en) * 1987-01-27 1988-03-15 Ametek, Inc. Filter with valve-in-head construction
US4735716A (en) * 1986-01-27 1988-04-05 Cuno Corporated Quick-change filter cartridge and head therefor
US4759474A (en) * 1985-06-24 1988-07-26 Everpure, Inc. Beverage dispensing system and filter cartridge therefor
US4770770A (en) * 1987-09-28 1988-09-13 Everpure, Inc. Water supply system using reverse osmosis unit for treatment of water supply
US4806240A (en) * 1987-06-12 1989-02-21 Cuno, Incorporated Adapter and cartridge assembly
US4857189A (en) * 1988-10-13 1989-08-15 Everpure, Inc. Filter cartridge with a lugged concentric closure portion
US4859328A (en) * 1986-05-30 1989-08-22 Caterpillar Inc. Twist on disposable filter
US4904382A (en) * 1987-11-23 1990-02-27 Everpure, Inc. Filter cartridge security for locking between operating and non-operating positions
US4915831A (en) * 1989-01-23 1990-04-10 Cuno, Incorporated Filter assembly featuring displaceable filter head plunger for locking into filter cartridge detent
US4956086A (en) * 1988-10-13 1990-09-11 Everpure, Inc. Filter cartridge with a lugged concentric closure portion
US5035797A (en) * 1990-02-14 1991-07-30 Stanadyne Automotive Corp. Key system for filter assembly
US5049269A (en) * 1989-06-08 1991-09-17 Sunstrand Corporation Filter assembly with spring loaded valve
US5114572A (en) * 1988-09-09 1992-05-19 Process Scientific Innovations Limited Filter assembly and cartridge therefor
USRE34050E (en) * 1986-03-07 1992-09-01 Everpure, Inc. Filtering system
US5180015A (en) * 1990-10-04 1993-01-19 Halliburton Company Hydraulic lockout device for pressure controlled well tools
US5186829A (en) * 1991-08-16 1993-02-16 Stanadyne Automotive Corp. Fuel filter key system
US5354464A (en) * 1990-03-14 1994-10-11 Water Factory Systems Multi-port connecting device
US5486288A (en) * 1993-01-26 1996-01-23 Elkay Manufacturing Company Mounting head with safety shut-off valve for replaceable filter cartridge
US5527470A (en) * 1994-11-16 1996-06-18 Everpure Inc. Water quality monitoring and control system for an ice maker
US5560824A (en) * 1993-03-31 1996-10-01 Hydac Filtertechnik Gmbh Filter device with closing arrangement and key opening connection
US5653871A (en) * 1996-04-24 1997-08-05 Everpure, Inc. Filter assembly with O-ring protection
US5705067A (en) * 1995-07-28 1998-01-06 Kitamuragokin Ind. Co., Ltd. Mixing faucet with water purifier
US5753107A (en) * 1996-08-08 1998-05-19 Wtc Ecomaster Corporation Dripless purification manifold and cartridge
US5826854A (en) * 1996-06-07 1998-10-27 Amana Refrigeration, Inc. Fluid routing system
US5833849A (en) * 1997-04-28 1998-11-10 Everpure, Inc. Spout mounted water filter and extension
US5837137A (en) * 1996-08-21 1998-11-17 Stanadyne Automotive Corp. Base/cartridge location and key system for fuel filter assembly
US5914037A (en) * 1997-11-24 1999-06-22 Yen; Chiu-Sen Filter device for a water filter
USD433094S (en) * 1999-07-16 2000-10-31 Pentapure Incorporated Cartridge connector
US6217762B1 (en) * 1999-03-29 2001-04-17 Jeffrey G. Rooney Specially adapted oil filter casing
US6360764B1 (en) * 2000-07-18 2002-03-26 Pentapure Incorporated Cartridge adapter
USD455814S1 (en) * 1996-08-08 2002-04-16 Pentapure Incorporated Cartridge for a water purification and treatment system
US6458269B1 (en) * 2000-04-20 2002-10-01 Cuno Incorporated Keyed filter assembly
US20020166805A1 (en) * 2001-03-21 2002-11-14 Minns Gian D. Filter assembly and method of manufacture
USD472299S1 (en) * 2002-08-22 2003-03-25 Pentapure Incorporated Filter cartridge connector
USD472604S1 (en) * 2002-08-22 2003-04-01 Pentapure Incorporated Filter manifold connector
US6555000B2 (en) * 1999-12-03 2003-04-29 Parker-Hannifin Corporation Fuel filter with bypass valve
US6579455B1 (en) * 1999-09-09 2003-06-17 Pti Advanced Filtration Filter and valve apparatus
US6632355B2 (en) * 2001-07-30 2003-10-14 Pentapure Incorporated Low spillage replaceable water filter assembly
US6649056B2 (en) * 2000-03-22 2003-11-18 Pentapure Incorporated Filter assembly
US6695891B2 (en) * 2000-08-11 2004-02-24 Roger P. Reid Keyed system for connection of filter cartridge to filter holder
US20050023206A1 (en) * 2003-07-29 2005-02-03 Karl Fritze Water filter adapter with locking feature
US7067054B2 (en) * 2001-07-31 2006-06-27 3M Innovative Properties Company Water filter assembly for use in an appliance

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US30148A (en) * 1860-09-25 Shoe-last
JPS5117231B2 (en) * 1971-09-08 1976-06-01
JPS4854562A (en) * 1971-11-09 1973-07-31
CA1306956C (en) * 1986-01-27 1992-09-01 Raymond M. Petrucci Quick-change filter cartridge and head therefor
US4907019A (en) 1989-03-27 1990-03-06 Tektronix, Inc. Ink jet cartridges and ink cartridge mounting system
DE4021790A1 (en) 1990-07-09 1992-01-16 Wella Ag Fluid dispenser for bottle filling - has dispensing head on storage container with lock engaged by bottle key
FR2693920B1 (en) 1992-07-23 1994-09-30 Labinal Improvements to the box liquid filters.
DK94792D0 (en) 1992-07-23 1992-07-23 Micro Matic As Switchgear
WO1997045362A1 (en) 1996-05-28 1997-12-04 Createchnic Ag Coded filling system
JPH1066804A (en) * 1996-08-27 1998-03-10 Japan Organo Co Ltd Cartridge type filter

Patent Citations (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US444020A (en) * 1891-01-06 Stove-truck
US2338291A (en) * 1941-07-21 1944-01-04 Imp Brass Mfg Co Two-way strainer
US2991885A (en) * 1957-07-15 1961-07-11 New York Business Dev Corp Oil filter unit
US3529515A (en) * 1967-05-24 1970-09-22 Bobst Fils Sa J Folding apparatus for a cardboard blank
US3746171A (en) * 1971-07-21 1973-07-17 J Thomsen Filter assembly
US3914176A (en) * 1974-05-06 1975-10-21 Clark Equipment Co Dual filter assembly
US4006752A (en) * 1975-10-24 1977-02-08 Everpure, Inc. Control for fluid flow system
US4396512A (en) * 1979-06-01 1983-08-02 Everpure, Inc. Bacteriostatic filter media
US4363829A (en) * 1979-08-27 1982-12-14 Fuji Photo Film Co., Ltd. Process for forming an electrically conductive film
US4271020A (en) * 1979-10-22 1981-06-02 Ryder International Corporation Valve for filter device
US4437499A (en) * 1981-05-11 1984-03-20 Everpure, Inc. Computer controlled sensor for beverage dispenser
US4548227A (en) * 1982-09-30 1985-10-22 Everpure, Inc. Chemical feeder device
US4515692A (en) * 1983-05-06 1985-05-07 Water Soft, Inc. Water filter
US4556484A (en) * 1983-07-05 1985-12-03 Teledyne Industries, Inc. Water filters
US4529514A (en) * 1983-12-19 1985-07-16 Oil-Rite Corporation Filter assembly with shut off and filter element therefor
US4645601A (en) * 1984-08-31 1987-02-24 Everpure, Inc. Quick change reverse osmosis assembly
US4594361A (en) * 1984-11-26 1986-06-10 Everpure, Inc. Stabilized polybromide resins and method of preparation
US4759474A (en) * 1985-06-24 1988-07-26 Everpure, Inc. Beverage dispensing system and filter cartridge therefor
USRE34031E (en) * 1985-11-18 1992-08-18 Everpure, Inc. Filtering system
US4654142A (en) * 1985-11-18 1987-03-31 Everpure, Inc. Filtering system
US4735716A (en) * 1986-01-27 1988-04-05 Cuno Corporated Quick-change filter cartridge and head therefor
USRE34050E (en) * 1986-03-07 1992-09-01 Everpure, Inc. Filtering system
US4725354A (en) * 1986-03-07 1988-02-16 Everpure, Inc. Filtering system
US4859328A (en) * 1986-05-30 1989-08-22 Caterpillar Inc. Twist on disposable filter
US4731183A (en) * 1987-01-27 1988-03-15 Ametek, Inc. Filter with valve-in-head construction
US4806240A (en) * 1987-06-12 1989-02-21 Cuno, Incorporated Adapter and cartridge assembly
US4770770A (en) * 1987-09-28 1988-09-13 Everpure, Inc. Water supply system using reverse osmosis unit for treatment of water supply
US4904382A (en) * 1987-11-23 1990-02-27 Everpure, Inc. Filter cartridge security for locking between operating and non-operating positions
US5114572A (en) * 1988-09-09 1992-05-19 Process Scientific Innovations Limited Filter assembly and cartridge therefor
US4956086A (en) * 1988-10-13 1990-09-11 Everpure, Inc. Filter cartridge with a lugged concentric closure portion
US4857189A (en) * 1988-10-13 1989-08-15 Everpure, Inc. Filter cartridge with a lugged concentric closure portion
US4915831A (en) * 1989-01-23 1990-04-10 Cuno, Incorporated Filter assembly featuring displaceable filter head plunger for locking into filter cartridge detent
US5049269A (en) * 1989-06-08 1991-09-17 Sunstrand Corporation Filter assembly with spring loaded valve
US5035797A (en) * 1990-02-14 1991-07-30 Stanadyne Automotive Corp. Key system for filter assembly
US5354464A (en) * 1990-03-14 1994-10-11 Water Factory Systems Multi-port connecting device
US5180015A (en) * 1990-10-04 1993-01-19 Halliburton Company Hydraulic lockout device for pressure controlled well tools
US5766463A (en) * 1991-08-16 1998-06-16 Stanadyne Automotive Corp. Fuel filter cartridge
US5186829A (en) * 1991-08-16 1993-02-16 Stanadyne Automotive Corp. Fuel filter key system
US5486288A (en) * 1993-01-26 1996-01-23 Elkay Manufacturing Company Mounting head with safety shut-off valve for replaceable filter cartridge
US5560824A (en) * 1993-03-31 1996-10-01 Hydac Filtertechnik Gmbh Filter device with closing arrangement and key opening connection
US5527470A (en) * 1994-11-16 1996-06-18 Everpure Inc. Water quality monitoring and control system for an ice maker
US5705067A (en) * 1995-07-28 1998-01-06 Kitamuragokin Ind. Co., Ltd. Mixing faucet with water purifier
US5653871A (en) * 1996-04-24 1997-08-05 Everpure, Inc. Filter assembly with O-ring protection
US5826854A (en) * 1996-06-07 1998-10-27 Amana Refrigeration, Inc. Fluid routing system
US5753107A (en) * 1996-08-08 1998-05-19 Wtc Ecomaster Corporation Dripless purification manifold and cartridge
US6027644A (en) * 1996-08-08 2000-02-22 Pentapure Incorporated Dripless purification manifold and cartridge
USD455814S1 (en) * 1996-08-08 2002-04-16 Pentapure Incorporated Cartridge for a water purification and treatment system
US6193884B1 (en) * 1996-08-08 2001-02-27 Pentapure Incorporated Dripless purification manifold and cartridge
US5837137A (en) * 1996-08-21 1998-11-17 Stanadyne Automotive Corp. Base/cartridge location and key system for fuel filter assembly
US5833849A (en) * 1997-04-28 1998-11-10 Everpure, Inc. Spout mounted water filter and extension
US5914037A (en) * 1997-11-24 1999-06-22 Yen; Chiu-Sen Filter device for a water filter
US6217762B1 (en) * 1999-03-29 2001-04-17 Jeffrey G. Rooney Specially adapted oil filter casing
USD433094S (en) * 1999-07-16 2000-10-31 Pentapure Incorporated Cartridge connector
US6579455B1 (en) * 1999-09-09 2003-06-17 Pti Advanced Filtration Filter and valve apparatus
US6555000B2 (en) * 1999-12-03 2003-04-29 Parker-Hannifin Corporation Fuel filter with bypass valve
US6649056B2 (en) * 2000-03-22 2003-11-18 Pentapure Incorporated Filter assembly
US6458269B1 (en) * 2000-04-20 2002-10-01 Cuno Incorporated Keyed filter assembly
US20020185425A1 (en) * 2000-04-20 2002-12-12 Bassett Laurence W. Keyed filter assembly
US6426001B1 (en) * 2000-07-18 2002-07-30 Pentapure Incorporated Cartridge adapter
US6360764B1 (en) * 2000-07-18 2002-03-26 Pentapure Incorporated Cartridge adapter
US6695891B2 (en) * 2000-08-11 2004-02-24 Roger P. Reid Keyed system for connection of filter cartridge to filter holder
US20020166805A1 (en) * 2001-03-21 2002-11-14 Minns Gian D. Filter assembly and method of manufacture
US6632355B2 (en) * 2001-07-30 2003-10-14 Pentapure Incorporated Low spillage replaceable water filter assembly
US7147772B2 (en) * 2001-07-30 2006-12-12 3M Innovative Properties Company Low spillage replaceable water filter assembly
US7067054B2 (en) * 2001-07-31 2006-06-27 3M Innovative Properties Company Water filter assembly for use in an appliance
USD472604S1 (en) * 2002-08-22 2003-04-01 Pentapure Incorporated Filter manifold connector
USD472299S1 (en) * 2002-08-22 2003-03-25 Pentapure Incorporated Filter cartridge connector
US20050023206A1 (en) * 2003-07-29 2005-02-03 Karl Fritze Water filter adapter with locking feature

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7837876B2 (en) 2004-10-28 2010-11-23 Paragon Water Systems, Inc. Water purifying apparatuses
US20110192782A1 (en) * 2005-07-20 2011-08-11 3M Innovative Properties Company Fluid filtration system
US20070199876A1 (en) * 2005-07-20 2007-08-30 3M Innovative Properties Company Fluid filtration system
US8097157B2 (en) 2005-07-20 2012-01-17 3M Innovative Properties Company Fluid filtration system
US8097156B2 (en) 2005-07-20 2012-01-17 3M Innovative Properties Company Fluid filtration system
US20070284296A1 (en) * 2006-06-08 2007-12-13 Paragon Water Systems Filter cartridge and head assembly with internal shutoff valve
WO2009005499A1 (en) * 2007-07-02 2009-01-08 Paragon Water Systems Filter cartridge and head assembly with internal shutoff valve
WO2009039471A1 (en) 2007-09-21 2009-03-26 Robert Lisenko Locking filter assembly
EP2197564A1 (en) * 2007-09-21 2010-06-23 Robert Lisenko Locking filter assembly
US20130031926A1 (en) * 2008-08-08 2013-02-07 Kx Technologies, Llc Push Filter with Floating Key Lock
EP2310107A4 (en) * 2008-08-08 2011-07-20 Kx Technologies Llc Push filter with floating key lock
US8673146B2 (en) * 2008-08-08 2014-03-18 Kx Technologies Llc Push filter with floating key lock
EP2310107A2 (en) * 2008-08-08 2011-04-20 KX Technologies LLC Push filter with floating key lock
RU2475293C2 (en) * 2008-08-08 2013-02-20 КейЭкс ТЕКНОЛОДЖИЗ ЭлЭлСи Pres-on filter with floating lock
WO2010017003A3 (en) * 2008-08-08 2010-04-08 Kx Technologies Llc Push filter with floating key lock
US8137551B1 (en) * 2008-08-08 2012-03-20 Kx Technologies, Llc Push filter with floating key lock
US20120144854A1 (en) * 2008-08-08 2012-06-14 Kx Technologies, Llc Push Filter with Floating Key Lock
WO2010017003A2 (en) 2008-08-08 2010-02-11 Kx Technologies Llc Push filter with floating key lock
US8366930B2 (en) * 2008-08-08 2013-02-05 Kx Technologies, Llc Push filter with floating key lock
US20110174705A1 (en) * 2008-09-16 2011-07-21 Branscomb Matt R Filter cartridge and system using linear actuation
WO2010033470A3 (en) * 2008-09-16 2010-06-17 3M Innovative Properties Company Filter cartridge and system using linear actuation
US8709246B2 (en) 2008-09-16 2014-04-29 3M Innovative Properties Company Filter cartridge and system using linear actuation
US8356716B1 (en) * 2011-09-15 2013-01-22 Whirlpool Corporation Filter unit
US20130068670A1 (en) * 2011-09-15 2013-03-21 Whirlpool Corporation Filter unit
US8413818B1 (en) * 2011-09-15 2013-04-09 Whirlpool Corporation Filter unit
US8580109B2 (en) * 2011-09-15 2013-11-12 Whirlpool Corporation Electronic interface for water filter system
EP2570165A2 (en) 2011-09-15 2013-03-20 Whirlpool Corporation Filter unit
EP2570166A2 (en) 2011-09-15 2013-03-20 Whirlpool Corporation Water filter system with an electronic interface and method of installing a filter unit
US8950052B2 (en) * 2011-09-15 2015-02-10 Whirlpool Corporation Method of installing a filter unit
US9533243B2 (en) 2011-09-15 2017-01-03 Whirlpool Corporation Electronic interface for water filtration system
US10010820B1 (en) 2011-09-15 2018-07-03 Whirlpool Corporation Water filter system
US9937451B2 (en) 2011-09-15 2018-04-10 Whirlpool Corporation Filter unit
US10022658B2 (en) 2011-09-15 2018-07-17 Whirlpool Corporation Water filter system
CN106714926A (en) * 2014-10-13 2017-05-24 康明斯滤清系统知识产权公司 Spin-on filter for suction-side and pressure-side applications in filtration systems

Also Published As

Publication number Publication date Type
US20040144710A1 (en) 2004-07-29 application
KR101177950B1 (en) 2012-08-28 grant
CN100482311C (en) 2009-04-29 grant
EP1689507A1 (en) 2006-08-16 application
CN1901983A (en) 2007-01-24 application
US6949189B2 (en) 2005-09-27 grant
KR20060107571A (en) 2006-10-13 application
JP2007513761A (en) 2007-05-31 application
EP1689507B1 (en) 2012-01-25 grant
WO2005061073A1 (en) 2005-07-07 application

Similar Documents

Publication Publication Date Title
US3473664A (en) Oil filter unit
US5203994A (en) Fuel filter retention system
US6024229A (en) Reusable filter assembly
US6139738A (en) Cartridge filter with integrated threading having anti-rotation feature
US5301958A (en) Seal for spin-on filter having circumferential retaining groove
US4834885A (en) Seal arrangement for fluid filters
US6797168B1 (en) Keyed latch valve for fuel filter
US5302284A (en) Fuel filter with spring-loaded retention system
US6235194B1 (en) Recharge and filter assembly with replaceable cartridge
US6555000B2 (en) Fuel filter with bypass valve
US6506303B1 (en) Liquid filter with a replaceable filter element
US5783078A (en) Fuel/water separator filter without flow diverters and method of making same
US5035797A (en) Key system for filter assembly
US5744030A (en) Filter assembly with automatic shut-off and quick-connect filter cartridge
US7311748B2 (en) Air filter assembly system and method
US20050045552A1 (en) Modular fluid treatment apparatus and method
US6083381A (en) Fuel filter with sediment drain valve and level indicator
US5167814A (en) Filter apparatus snap lock cartridge retainer
US4806240A (en) Adapter and cartridge assembly
US6830683B2 (en) Filter cartridge assembly with brine seal and retaining ring
US6053334A (en) Fuel filter with valve device
US4272368A (en) Fluid filter and indicator
US6048455A (en) Filter assembly with conformal cartridge support structure
US5922196A (en) Liquid filter with connection flange
US20030226800A1 (en) Environmentally friendly filter cartridge

Legal Events

Date Code Title Description
AS Assignment

Owner name: 3M INNOVATIVE PROPERTIES COMPANY, MINNESOTA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CUNO, INCORPORATED;REEL/FRAME:017364/0850

Effective date: 20060301