WO1997026977A1 - Magnetic filter assembly - Google Patents
Magnetic filter assembly Download PDFInfo
- Publication number
- WO1997026977A1 WO1997026977A1 PCT/US1997/000772 US9700772W WO9726977A1 WO 1997026977 A1 WO1997026977 A1 WO 1997026977A1 US 9700772 W US9700772 W US 9700772W WO 9726977 A1 WO9726977 A1 WO 9726977A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic
- housing
- band
- filter
- filter assembly
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 238000005461 lubrication Methods 0.000 claims abstract description 15
- 239000000314 lubricant Substances 0.000 claims description 8
- 239000013528 metallic particle Substances 0.000 abstract description 2
- 230000001050 lubricating effect Effects 0.000 description 7
- 239000013618 particulate matter Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
Classifications
-
- 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
- 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
Definitions
- the present invention relates to devices for filtering particulate matter from the fluid lubricant of an engine, and more particularly concerns the use of magnetic forces in hindering the movement of particulate matter which is magnetically attractive through such filtering devices.
- FIG. 1 is a side elevational view of a preferred embodiment of a magnetic filter housing according to the present invention
- FIG. 2 is an enlarged partial cross section view of the embodiment of FIG. 1 , along line 2 - 2;
- FIG. 3 is an enlarged planar view of a portion of the cross section of FIG. 2.
- the present invention comprises an improved removable magnetic filter assembly for use in a fluid lubrication system, said assembly having an internal filter element through which a lubricant flows, such as those fibrous particulate filter elements which are typically used with combustion engines, and further including a substantially cylindrical magnetic filter housing having a side wall, a closed first end and a partially open second end.
- the second end of he filter housing includes connective conduit means by which the filter assembly is attached to a lubrication system, and through which a lubricant may flow from said lubrication system into the filter housing, and out of the filter housing back into said lubrication system.
- the filter assembly further includes magnetic flow-restriction means affixed to the inside surface of the housing for magnetically attracting metallic particles from the fluid flow within the filter.
- FIG's 1 , 2 and 3 illustrate an embodiment of a magnetic filter assembly 10 according to the present invention, for use with a fluid lubrication system (not shown).
- the filter assembly 10 comprises a filter housing 12 which includes a hollow cylindrical side wall 14, a closed end 16 and a semi-open end 18.
- the semi-open end 18 includes connective conduit means 20 by which the filter assembly 10 is attached to a lubrication system (not shown).
- the connective conduit means 20 further includes a plurality of intake conduits 22 through which a lubricant may flow from said lubrication system into the filter housing 12, and at least one exhaust conduit 24 through which said lubricant may flow out of the filter housing 12 back into said lubrication system.
- a hollow cylindrical fibrous particulate filter 26 is further affixed inside the filter housing and in communication with the exhaust conduit 24. As a fluid lubricant flows through the intake conduits 22, it is directed around the fibrous particulate filter 26, toward the interior surface of the cylindrical wall 14 (FIG. 1).
- the filter housing 12 of the present invention further includes at least one magnetic-band engaging channel 28 which circumscribes the interior surface of the wall 14, and in which a magnetic band 30 is affixed.
- Each channel 28 is formed in the side wall 14 via means which are known, and includes upper and lower flanges 32 connecting the side wall 14 to a substantially flat interior wall 34 of said channel 28.
- the housing 12 diameter in each channel 28 is greater than the housing 12 diameter between non-channeled portions of the wall 14.
- Each magnetic band 30 is affixed along an outside surface 36 of said band to the interior wall 34 of the corresponding channel 28. It is preferred that the width of each band 30 is substantially equal to the width of the interior wall 34 of the corresponding channel 28.
- each band 30 is preferably greater than the depth of the corresponding channel 28, such that a diameter of the housing 12 drawn between interior surfaces 37 of said band 30 is less than the diameter of the housing 12 which is drawn between non-channeled portions of the wall 14.
- each band 30 creates upper and lower magnetic shelves 38 along the interior surface of the side wall 14, around which lubricating fluid flowing through the filter assembly 10 must pass as it flows between the wall 14 and the porous particulate filter 26 (FIG. 3).
Abstract
A removable magnetic filter assembly for use in a fluid lubrication system is disclosed herein. The assembly includes a substantially cylindrical magnetic filter housing (12) having a side wall (14). The filter assembly further includes magnetic band (30) affixed within a magnetic band engaging channel (28) in the housing for magnetically attracting metallic particles from fluid flow through the filter assembly.
Description
MAGNETIC FILTER ASSEMBLY
RELATED DISCLOSURE
This application is a continuation-in-part of an application which was originally filed in the United States Patent and Trademark Office on 24 January 1996 (24.01.96) and entitled Magnetic Filter ASSEMBLY, and having serial number 60/010,537.
BACKGROUND OF THE INVENTION
The present invention relates to devices for filtering particulate matter from the fluid lubricant of an engine, and more particularly concerns the use of magnetic forces in hindering the movement of particulate matter which is magnetically attractive through such filtering devices.
Many magnetic filtering devices have been proposed in the prior art for hindering the movement of particulate matter which is magnetically attractive through an engine lubrication system. Examples of such devices can be found in the following U S Letters Patent: Nbr. 5,282,963 by Hull et al; Nbr. 5,273,648 by Caiozza; Nbr. 5,228,990 by Chiang; Nbr. 5,089,129 by Brigman; Nbr. 5,078,871 by McCready; Nbr.'s
5,009,779, 4,642,183 and 4,501,660 by Hebert; Nbr. 4,894,153 by Sirdavant; Nbr. 4,839,044 by Tomita; Nbr. 4,826,592 by Taylor; Nbr. 4,629,558 by Garritty; Nbr. 4,613,435 by Shoemaker; Nbr. 4,450,075 by Krow; Nbr. 4,446,019 by Robinson; Nbr. 4,218,320 by Liaw; Nbr. 4,067,810 by Sullivan; Nbr. 4,052,312 by King; Nbr. 3,887,469 by Hayashi; and Nbr. 3,480,145 by Gladden. While these devices may be suitable for a particular purpose to which they address, it will be apparent to those skilled in the art that said devices would not be as suitable for the purposes of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description. Such description makes reference to the appended drawings, wherein:
FIG. 1 is a side elevational view of a preferred embodiment of a magnetic filter housing according to the present invention;
FIG. 2 is an enlarged partial cross section view of the embodiment of FIG. 1 , along line 2 - 2; and
FIG. 3 is an enlarged planar view of a portion of the cross section of FIG. 2.
DETAILED DESCRIPTION OF VARIOUS EMBODIMENTS
The present invention comprises an improved removable magnetic filter assembly for use in a fluid lubrication system, said assembly having an internal filter element through which a lubricant flows, such as those fibrous particulate filter elements which are typically used with combustion engines, and further including a substantially cylindrical magnetic filter housing having a side wall, a closed first end and a partially open second end. The second end of he filter housing includes connective conduit means by which the filter assembly is attached to a lubrication system, and through which a lubricant may flow from said lubrication system into the filter housing, and out of the filter housing back into said lubrication system. The filter assembly further includes magnetic flow-restriction means affixed to the inside surface of the housing for magnetically attracting metallic particles from the fluid flow within the filter. One embodiment of the instant invention is illustrated in the appended drawings and described in greater detail, below. (All like numerical designations in the figures represent the same element.)
FIG's 1 , 2 and 3 illustrate an embodiment of a magnetic filter assembly 10 according to the present invention, for use with a fluid lubrication system (not shown). The filter assembly 10 comprises a filter housing 12 which includes a hollow cylindrical side wall 14, a closed end 16 and a semi-open end 18. The semi-open end 18 includes connective conduit means 20 by which the filter assembly 10 is attached to a lubrication system (not shown). The connective conduit means 20 further includes a plurality of intake conduits 22 through which a lubricant may flow from said lubrication system into the filter housing 12, and at least one exhaust conduit 24 through which said lubricant may flow out of the filter housing 12 back into said lubrication system. A hollow cylindrical fibrous particulate filter 26 is further affixed inside the filter housing and in communication with the exhaust conduit 24. As a fluid lubricant flows through the intake conduits 22, it is directed around the fibrous particulate filter 26, toward the interior surface of the cylindrical wall 14 (FIG. 1). As the lubricating fluid flows adjacent the wall 14, it is drawn into and through the fibrous particulate filter 26 by a vacuum force generated by the portion of the lubricating system which is in communication with the exhaust conduit 24. After the lubricating fluid flows through the fibrous particulate filter 26, it is then drawn toward and through the exhaust conduit 26. (See the dotted- line arrows in FIG. 1.) Thus far, the description of the instant invention parallels that of typical cylindrical fluid lubrication filters of the prior art.
The filter housing 12 of the present invention, however, further includes at least one magnetic-band engaging channel 28 which circumscribes the interior surface of the wall 14, and in which a magnetic band 30 is affixed. Each channel 28 is formed in the side wall 14 via means which are known, and includes upper and lower flanges 32 connecting the side wall 14 to a substantially flat interior wall 34 of said channel 28. The housing 12 diameter in each channel 28 is greater than the housing 12 diameter between non-channeled portions of the wall 14. Each magnetic band 30 is affixed along an outside surface 36 of said band to the interior wall 34 of the corresponding channel 28. It is preferred that the width of each band 30 is substantially equal to the width of the interior wall 34 of the corresponding channel 28. The depth of each band
30, however, is preferably greater than the depth of the corresponding channel 28, such that a diameter of the housing 12 drawn between interior surfaces 37 of said band 30 is less than the diameter of the housing 12 which is drawn between non-channeled portions of the wall 14. Thus, each band 30 creates upper and lower magnetic shelves 38 along the interior surface of the side wall 14, around which lubricating fluid flowing through the filter assembly 10 must pass as it flows between the wall 14 and the porous particulate filter 26 (FIG. 3).
As said lubricating fluid passes around the magnetic shelves 38, magnetically attractive particulate matter 39 is drawn from said fluid into contact with the band 30. It is believed that as greater amounts of such magnetically attractive particles 39 are thus pulled from said lubricating fluid, that such particles will build up in spaces 40 between the flanges 32 of the channels 28 and the magnetic shelves 38 of the bands 30, as such spaces 40 are somewhat out of the main flow path of the lubricating fluid around the magnetic band 30. Particles 39 which are in such magnetic contact with the magnetic band 30, are thereby protected from fluid forces which may be in said main fluid flow path.
The inventor has given a non-limiting description of a preferred embodiment of the present invention, to which many changes may be made without deviating from the spirit of the invention. While this invention has been described with reference to an illustrative embodiment, this description is not intended to be construed in a limiting sense. Various modifications and combinations of the preferred embodiment, as well as other embodiments of this invention, will be apparent to a person skilled in the art upon reference to this description. It is therefore contemplated that the appended claims cover any such modifications and/or embodiments that fall within the true scope of the present invention.
Claims
1. A removable magnetic filter assembly for use in a fluid lubrication system, said assembly comprising: a filter housing including a hollow cylindrical side wall, a closed end and a semi-open end; said semi-open end including connective conduit means by which the filter assembly is attached to a lubrication system; said connective conduit means further including a plurality of intake conduits through which a lubricant may flow from said lubrication system into the filter housing, and at least one exhaust conduit through which said lubricant may flow out of the filter housing back into said lubrication system; a hollow cylindrical fibrous particulate filter is further affixed inside the filter housing and in communication with the exhaust conduit; at least one magnetic-band engaging channel circumscribing the interior surface of the housing wall; and a magnetic band affixed within said at least one magnetic-band engaging channel.
2. The magnetic filter assembly as recited in claim 1 , wherein each engaging channel is formed in the housing side wall and includes upper and lower flanges connecting the housing side wall to a substantially flat interior wall of said channel.
3. The magnetic filter assembly as recited in claim 2, wherein the housing diameter at each engaging channel is greater than the housing diameter between non-channeled portions of the housing wall.
4. The magnetic filter assembly as recited in claim 2, wherein said magnetic band is affixed along an outside surface of the band to the interior wall of each engaging channel.
5. The magnetic filter assembly as recited in claim 4, wherein the width of each magnetic band is substantially equal to the width of the interior wall of the engaging channel in which said band is affixed.
6. The magnetic fitter assembly as recited in claim 5, further wherein the depth of each magnetic band is greater than the depth of the engaging channel in which said band is affixed, such that a diameter of the housing drawn between interior surfaces of said magnetic band is less than the diameter of the housing which is drawn between non-channeled portions of the wall.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU22436/97A AU2243697A (en) | 1996-01-24 | 1997-01-24 | Magnetic filter assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1053796P | 1996-01-24 | 1996-01-24 | |
US60/010,537 | 1996-01-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997026977A1 true WO1997026977A1 (en) | 1997-07-31 |
Family
ID=21746213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1997/000772 WO1997026977A1 (en) | 1996-01-24 | 1997-01-24 | Magnetic filter assembly |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2243697A (en) |
WO (1) | WO1997026977A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007006817A1 (en) | 2005-07-12 | 2007-01-18 | Centro De Investigación De Rotación Y Torque Aplicada, S.L. C.I.F. B83987073 | Filter for capturing polluting emissions |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5556540A (en) * | 1994-06-30 | 1996-09-17 | Brunsting; William J. | Magnetic assembly for a closed pressurized flow path of lubricating oil |
-
1997
- 1997-01-24 AU AU22436/97A patent/AU2243697A/en not_active Withdrawn
- 1997-01-24 WO PCT/US1997/000772 patent/WO1997026977A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5556540A (en) * | 1994-06-30 | 1996-09-17 | Brunsting; William J. | Magnetic assembly for a closed pressurized flow path of lubricating oil |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007006817A1 (en) | 2005-07-12 | 2007-01-18 | Centro De Investigación De Rotación Y Torque Aplicada, S.L. C.I.F. B83987073 | Filter for capturing polluting emissions |
Also Published As
Publication number | Publication date |
---|---|
AU2243697A (en) | 1997-08-20 |
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