Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16H—GEARING
  • F16H57/00—General details of gearing
  • F16H57/04—Features relating to lubrication or cooling or heating
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
  • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
  • B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
  • B01D35/06—Filters making use of electricity or magnetism
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03C1/00—Magnetic separation
  • B03C1/02—Magnetic separation acting directly on the substance being separated
  • B03C1/28—Magnetic plugs and dipsticks
  • B03C1/288—Magnetic plugs and dipsticks disposed at the outer circumference of a recipient
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03C1/00—Magnetic separation
  • B03C1/02—Magnetic separation acting directly on the substance being separated
  • B03C1/30—Combinations with other devices, not otherwise provided for
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2201/00—Details relating to filtering apparatus
  • B01D2201/04—Supports for the filtering elements
  • B01D2201/0407—Perforated supports on both sides of the filtering element
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2201/00—Details relating to filtering apparatus
  • B01D2201/30—Filter housing constructions
  • B01D2201/301—Details of removable closures, lids, caps, filter heads
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03C2201/00—Details of magnetic or electrostatic separation
  • B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03C2201/00—Details of magnetic or electrostatic separation
  • B03C2201/30—Details of magnetic or electrostatic separation for use in or with vehicles
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
  • F01M1/00—Pressure lubrication
  • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
  • F01M2001/1028—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the type of purification
  • F01M2001/1042—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the type of purification comprising magnetic parts
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S210/00—Liquid purification or separation
  • Y10S210/17—Twist-on

Definitions

• the present disclosure relates to fluid filters, and in particular to filters for transmission fluid. More particularly, the present disclosure relates to fluid filter assemblies including magnetic and non-magnetic filters.
• a transmission fluid filter assembly comprises a filter media, a discharge conduit coupled to the filter media, a magnetic particle trap associated with the filter media, and a connector arranged to lie under the filter media and the magnetic particle trap.
• the magnetic particle trap is magnetized to attract and retain particles of ferrous material carried in transmission fluid.
• the connector is adapted to be coupled to a filter mount provided at an opening in a transmission pan to support the filter media, discharge conduit, and magnetic particle trap in an interior region of a transmission pan containing transmission fluid to be filtered.
• a monolithic member made of a plastics material containing a magnetic material is formed in a mold to include both the magnetic particle trap and the underlying connector;
• the magnetic particle trap includes a plate arranged to lie under and support a filter media comprising a sleeve made of filter material and a trap section located between the plate and the comiector and formed to include a series of ferrous particle-receiving notches arranged to lie around a perimeter edge of the plate.
• the magnetic particle trap comprises a perforated cage formed to include an interior region receiving the filter media therein.
• a pump coupled to the discharge conduit is used to draw transmission fluid conducted from a transmission into a transmission pan through the filter media and then transport filtered transmission fluid through the discharge conduit back to the transmission.
• Many particles of ferrous material carried in the transmission fluid will be attracted to and retained in the magnetic particle trap to minimize recirculation of those particles through the discharge conduit to the transmission.
• Fig. 1 is a diagrammatic view of a vehicle transmission system comprising a transmission, a pan, a filter in accordance with the present disclosure coupled to the pan to filter fluid discharged from the pan, and a pump arranged to pump filtered fluid to the transmission;
• Fig. 2 is a diagrammatic view of one illustrative embodiment of the fluid filter shown in Fig. 1 showing a filter media, a magnetic particle trap provided below the filter media, a connector adapted to mate with the pan to expose the filter media and magnetic particle trap to transmission fluid in the pan, and a discharge conduit arranged to conduct transmission fluid filtered by the filter media and the magnetic particle trap to a fluid output destination outside of the pan;
• Fig. 3 is an exploded perspective view of one embodiment of the fluid filter shown in Fig. 2 showing (from bottom to top) a pan connector carrying a grip handle on a lower side and providing a threaded portion on an upper side, a magnetic particle trap provided on top of the threaded portion, a filter media above the magnetic particle trap, a discharge conduit adapted to be inserted into a central interior region formed in the filter media, a large O-ring seal to be mounted between the pan and an annular surface on the pan connector surrounding the threaded portion, a round top end disk, and a small O-ring seal to be mounted between the discharge conduit and the pan;
• Fig. 4 is a perspective view of a fluid filter made using the components shown in Fig. 3;
• Fig. 5 is a perspective view showing the hand grip provided on the lower side of the pan connector and the magnetic particle trap provided above an upper side of the pan connector;
• Fig. 6 is a sectional view showing the fluid filter of Fig. 4 mounted in an opening formed in a transmission pan along the lines suggested in Fig. 1;
• Fig. 7 is a sectional view taken along line 7-7 of Fig. 6 showing a portion of the discharge conduit in a central interior region formed in the filter media;
• Fig. 8 is a sectional view showing another illustrative view of the fluid filter shown in Fig. 2 wherein a lower portion of the pan connector has been modified to mount flush with the bottom exterior surface of the transmission pan and an upper portion of the pan connector has been modified to place the magnetic filter trap in a position above a filter mount collar provided in an interior region of the transmission pan;
• Fig. 9 is a sectional view taken along line 9-9 of Fig. 8 showing another style of filter media
• Fig. 10 is a sectional view showing yet another illustrative view of the fluid filter of Fig. 2 wherein the magnetic particle trap is formed to include particle- receiving wells around the periphery thereof;
• Fig. 11 is a sectional view taken along line 11-11 of Fig. 10;
• Fig. 12 is a partial perspective view of a portion of the fluid filter shown in Figs. 9 and 10, showing some of the particle-receiving wells;
• Fig. 13 is a diagrammatic view of another illustrative embodiment of a fluid filter shown in Fig. 1 showing a filter media housed in a magnetic particle trap cage, a connector adapted to mate with the pan to expose the filter media and surrounding magnetic particle trap cage to transmission fluid in the pan, and a discharge conduit arranged to conduct transmission fluid filtered by the filter media and the magnetic particle trap cage to a fluid output destination outside of the pan;
• a filter module 10 is adapted to be mounted in an aperture 12 provided in a transmission pan 14 to filter transmission fluid 16 in pan 14 as shown diagrammatically in Fig. 1.
• pan 14 receives transmission fluid 16 discharged from transmission 20 and pump 22 draws unfiltered fluid 16 through filter module 10 and causes filtered fluid 16 discharged from filter module 10 to be recirculated to transmission 20 as suggested in Fig. 1.
• pump 22 draws unfiltered fluid 16 through filter module 10 and causes filtered fluid 16 discharged from filter module 10 to be recirculated to transmission 20 as suggested in Fig. 1.
• each of modules 10, 110, and 210 includes a filter media 24 and one or more magnetic particle traps 26 associated with filter media 24 and configured to attract and retain any nearby particles of ferrous material discharged from transmission 20 and carried in transmission fluid 16 admitted into pan 14 so as to minimize recirculation of such ferrous material particles to transmission 20 via pump 22.
• Filter module 10 is adapted to receive unfiltered transmission fluid from fluid input 25 and discharge filtered transmission fluid to fluid output 28 as shown, for example, in Fig. 2.
• Filter module 10 comprises filter media 24, a magnetic particle trap base 30 under filter media 24, and a discharge conduit 32 arranged to conduct transmission fluid filtered by filter media 24 and magnetic particle trap base 30 to fluid output 28.
• Filter module 10 also comprises a connector 34 adapted to mate with a filter mount 36 associated, for example, with aperture 12 provided in transmission pan 14.
• Connector 34 mates with pan 14 to support filter media 24 and magnetic particle trap base 30 to expose filter media 24 and base 30 to transmission fluid 16 in pan 14 and to support discharge conduit 32 in fluid communication with filter media 24 and fluid output 28.
• magnetic particle trap base 30 is configured to attract and retain nearby ferrous material particles carried in transmission fluid supplied by fluid input 26 to filter module 10 so that discharge of such particles to fluid output 28 through discharge conduit 32 is minimized.
• Filter media 24 comprises a sleeve made of filter material and magnetic particle trap base 30 comprises a plate 38 arranged to lie under and support filter sleeve 24 and a trap section 40 formed to include a series of ferrous material particle-receiving notches 42 arranged to lie around a perimeter edge 44 of plate 38 as shown best in Fig. 3.
• plate 38, trap section 40, and a body portion 50 of connector 34 are made of a magnetic plastics material and united to form a monolithic member 46. It is within the scope of this disclosure to mix any suitable compounds and magnetized materials to produce a magnetic plastics material that will attract and retain ferrous material particles 48 (shown in Fig. 6) entrained in transmission fluid 16.
• Connector 34 comprises a body 50 including an axially upper portion 52 and an axially lower portion 54 as shown best in Fig. 3.
• Connector 34 also comprises an O-ring 56 shown in Fig. 3 and sized to extend around body 50 as shown in Figs. 4 and 6.
• Body 50 is made of a magnetic plastics material and is united with magnetic particle trap base 30 to provide monolithic member 46 as described above.
• axially upper portion 52 of body 50 of connector 34 includes exterior connection portions 58 (e.g., threads) and an axially upwardly facing surface 60 above exterior connection portions 58.
• exterior connection portions 58 are adapted to engage a mating filter mount collar 36 provided at aperture 12 formed in a floor 62 in transmission pan 14. It is within the scope of this disclosure to use threads or any suitable system to couple body 50 of connector 34 to filter mount 36 associated with transmission pan 14.
• Axially lower portion 54 of body 50 of connector 34 includes a radially outwardly extending annular flange 64 and a hand grip 66 as shown, for example, in Figs. 3 and 5.
• O-ring seal 56 is positioned to lie around body 50 and against annular flange 64 as shown best in Fig. 6.
• hand grip 66 has a shape resembling a "plus sign.” Serrations are provided on outer edge of annular flange 64 as shown to allow a user to grip that portion of connector 34 to facilitate "hand-torque" installation of filter module 10 in aperture 12 provided in pan 14.
• trap section 40 of magnetic particle tap base 30 includes a series of "scallop-shaped", radially outwardly opening, concave, curved, exterior side walls 68 arranged in circumferentially spaced-apart relation to one another about an outer periphery of trap section 40.
• Each side wall 68 cooperates with an adjacent portion of axially upwardly facing surface 60 to form one of the ferrous material particle-receiving notches 42.
• axially upwardly facing surface 60 is positioned to lie around and adjacent to the "scallop-shaped" periphery 68 of trap section 40 to provide a floor for each particle-receiving notch 42. It is within the scope of this disclosure to vary the size and shape of each side wall 68 and the associated notch floor.
• the side wall 68 and floor 60 associated with each particle-receiving notch 42 comprise a magnetic material to provide means for attracting and retaining in notches 42 any nearby particles 48 of ferrous material (see Fig. 6) carried in transmission fluid 16 and in close proximity to notches 42. It is within the scope of this disclosure to apply a magnetic coating (not shown) to one or both of side walls 68 and floor 60 or form one or both of side walls and floor of a magnetic material.
• a magnetic coating (not shown) to one or both of side walls 68 and floor 60 or form one or both of side walls and floor of a magnetic material.
• Discharge conduit 32 includes a perforated outer sleeve 70 sized to extend into an interior region 72 provided in filter media 24 and formed to include axially upper and lower ends 74, 76. Axially upper end 74 is formed to include an end aperture 78. A discharge tube 80 extends through end aperture 78 and includes an axially lower end 82 lying in an interior region 84 of perforated outer sleeve 70 and an axially upper end 86 lying outside of interior region 84.
• perforated outer sleeve 70 and discharge tube 80 are made of a plastics material and united to produce a monolithic discharge conduit 32.
• filter module 10 further comprises a top end plate 88 and an O-ring seal 90.
• Top end plate 88 is formed to include a central aperture 92 through which axially upper portion 86 of discharge tube 80 extends.
• Top end plate 88 is located to set on axially upper end 74 of perforated outer sleeve 70 when the components comprising filter module 10 are assembled.
• O-ring seal 90 is sized to fit in an annular groove 94 formed near an axially outer end of axially upper portion 86 so as to establish sealing contact with transmission pan 14 or other structure once filter module 10 is mounted in pan 14. It is within the scope of this disclosure to provide other suitable means for discharging filtered fluid from an interior region of filter media 24 to a remote location outside of transmission pan 14.
• axially lower end 76 of perforated outer sleeve 70 engages plate 38 of magnetic particle trap base 30 and axially lower end 82 of discharge tube 80 is arranged in interior region 84 to lie above and in spaced-apart relation to axially lower end 76 of perforated outer sleeve 70 as shown, for example, in Fig. 6.
• transmission fluid 16 present in interior region 72 of filter media 24 will be constrained to pass first through perforations in outer sleeve 70 and then into interior region 84 of outer sleeve 70 before being admitted into discharge tube 80 through axially lower end 76 thereof as such filtered transmission fluid 16 is pumped out of filter module 10 through discharge conduit 32.
• Axially lower end 76 of perforated outer sleeve 70 is positioned to lie adjacent to magnetic particle trap base 30 so that axially lower end 76 extends to or near to magnetic particle trap base 30.
• One way to assemble the filter module components is to bond a lower end of filter media 24 to plate 38 and bond an upper end of filter media 24 to top end plate 88. Infrared, hot-plate bonding, or other suitable bonding processes may be used to bond filter media 24 to plates 38, 88.
• discharge conduit 32 can be passed up "from the bottom" through interior region 72 of filter media 24 and through central aperture 92 formed in top end plate 88.
• Discharge conduit 32 can be bonded to top end plate 88 by spin-welding or other suitable technique.
• these components may be molded as one or more units rather than as individual components to be bonded together.
• Another embodiment of filter module 10 shown in Fig. 2 is illustrated in Figs.
• the connector has been modified to fit completely within an opening formed in bottom wall 62 of transmission pan 1 so as to lie "flush" to a bottom exterior surface of pan 14.
• This structure is similar in other respects to filter module 10 of Figs. 3-7 and provides a hand grip 66' recessed in an interior region formed in the connector.
• Connector 34' includes a body 50' and an O-ring seal 56.
• Body 50' includes a cylindrical sleeve 51 having an axially upper portion providing axially upwardly facing surface 60 and exterior connection portions 58 (e.g., threads).
• Cylindrical sleeve 51 also includes an axially lower portion providing an interior region 53 and radially outwardly extending annular flange 64.
• Hand grip 66' is positioned to lie in interior region 53 of cylindrical sleeve 51 and appended to axially downwardly facing surface 55.
• filter module 10 shown in Fig. 2 is illustrated in Figs. 10-12 as filter module 10".
• magnetic particle trap base 40' is formed to include a series of circumferentially spaced-apart particle-receiving wells 41 (in contrast to notches 42 shown, for example, in Figs. 8 and 9) around the periphery thereof.
• Each well 41 is defined by a curved outer side wall 43 and a pair of spaced-apart radially extending side walls 45 and a floor defined by axially upwardly facing surface 60.
• Wells 41 are sized to receive ferrous material particles therein as shown, for example, in Figs. 10 and 11.
• filter module 10" is similar to filter module 10'.
• FIG. 13 Another illustrative embodiment of a filter module of the type shown in Fig. 1 is illustrated diagrammatically in Fig. 13 as filter module 110.
• magnetic particle trap 26 is defined by a magnetic particle trap cage 27 around filter media 24 instead of a magnetic particle trap base 30 under filter media 24.
• a cage 27 is shown in Fig. 14.
• cage 27 comprises two semi-cylindrical perforated shell haves 27a and 27b which can mate with one another to provide a perforated sleeve located between top end plate 88 and connector 34' ' .
• Each half 27a, b is formed to include openings 28 to allow transmission fluid to flow therethrough and reach filter media 24 received therein.
• Cage 27 is made of a magnetic plastics material to attract and retain ferrous material particles 48 thereon and/or in openings 29. It is within the scope of this disclosure to provide a monolithic perforated cage having a cylindrical or other suitable shape. Yet another illustrative embodiment of a filter module of the type shown in Fig. 1 is illustrated diagrammatically in Fig. 15. Two magnetic particle traps 26 are included in filter module 210. Magnetic particle trap cage 27 functions as one of the traps 26 while magnetic particle trap base 30 functions as the other of the traps 26.
• Each magnetic particle filter trap 26 is made using a plastic compound that is mixed such that it can be magnetized to help trap particles of ferrous material carried in transmission fluid.
• the filter module incorporates slots or cavities that allow particles caught by magnetic attraction to become entrapped.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Water Supply & Treatment (AREA)
• Filtration Of Liquid (AREA)
• General Details Of Gearings (AREA)
• Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
• Fluid-Pressure Circuits (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=25522068

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (24)

Citations (6)

Family Cites Families (20)

• 2001
  • 2001-10-10 US US09/974,463 patent/US6464863B1/en not_active Expired - Lifetime
• 2002
  • 2002-05-07 CA CA002440003A patent/CA2440003C/en not_active Expired - Fee Related
  • 2002-05-07 BR BR0206817-6A patent/BR0206817A/pt not_active Application Discontinuation
  • 2002-05-07 JP JP2003534044A patent/JP3890329B2/ja not_active Expired - Fee Related
  • 2002-05-07 WO PCT/US2002/014528 patent/WO2003031017A1/en not_active Ceased
  • 2002-05-07 EP EP02734274A patent/EP1434639A4/en not_active Withdrawn
  • 2002-05-07 MX MXPA03010719A patent/MXPA03010719A/es active IP Right Grant

Patent Citations (6)

Non-Patent Citations (1)

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