Patent US4501660A successfully refreshed from Google Patents.
US4501660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil filter
Assignee: Individual
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Filing: 1983-11-17
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Granted: 1985-02-26
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Expires: 2003-11-17
Abstract
Abstract An automotive lubricating oil filter device comprising a main container body having inlets and outlets for the lubricating oil to be filtered, and a cylindrical filtering element through which the oil is filtered from the outer portion of the body inwardly to a central cylindrical core. The core contains a magnetized metallic helical structure within which is enclosed one or more longitudinal bars of magnesium metal. The magnetized helical spring serves to remove fine metallic particles from the lubricating oil, preventing agglomeration on the filtering element, in addition to preventing engine wear, and the magnesium metal serves to neutralize sulfuric acid generated in the engine. The structure with the helical spring and bars contained therein may be removed and cleaned to be regenerated without requiring disposal of the main filter structure and vice versa.
Inventors
- 👤 Alfred Hebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:06
CPC Classifications
B; B01; B01D; B01D37/00; B01D37/02; B01D37/025; B01D35/00; B01D35/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
226 words
An oil filter device comprising an outer cylindrical container member having inner and outer ends, the outer end of said member being closed, said inner end having a central annular outlet aperture with internally threaded walls adapted to engage exteriorly threaded walls of an annular conduit extending from an engine block, the outer regions of said inner end having inlet apertures formed therein, a cylindrical perforated shell centrally located within said outer member and defining a filtering regions between the cylindrical walls of the outer container and said shell, an accordian-shaped filter element located in said filtering region, and within the perforated shell a core region, said core region adapted to contain a permanently magnetized metal helical structure within which structure is retained at least one bar of magnesium metal, the inner terminus of said helical structure extending into said central outlet aperture, central windings of said helical structure having a radius less than the radius of said central outlet aperture and greater than the radius of the said annular conduit, whereby oil flowing inwardly through said filtering element flows past said helical structure and magnesium bar, and metallic particles in said oil are removed by said magnetized helix, and acid carried by said oil is neutralized by said magnesium metal, and said oil flows out of said oil filter device through said central outlet aperture.
Claim 2
Dependent Claim
226 words
An oil filter device comprising an outer cylindrical container member having inner and outer ends, the outer end of said member being closed, said inner end having a central annular outlet aperture with internally threaded walls adapted to engage exteriorly threaded walls of an annular conduit extending from an engine block, the outer regions of said inner end having inlet apertures formed therein, a cylindrical perforated shell centrally located within said outer member and defining a filtering regions between the cylindrical walls of the outer container and said shell, an accordian-shaped filter element located in said filtering region, and within the perforated shell a core region, said core region adapted to contain a permanently magnetized metal helical structure within which structure is retained at least one bar of magnesium metal, the inner terminus of said helical structure extending into said central outlet aperture, central windings of said helical structure having a radius less than the radius of said central outlet aperture and greater than the radius of the said annular conduit, whereby oil flowing inwardly through said filtering element flows past said helical structure and magnesium bar, and metallic particles in said oil are removed by said magnetized helix, and acid carried by said oil is neutralized by said magnesium metal, and said oil flows out of said oil filter device through said central outlet aperture.
Claim 3
Dependent Claim
225 words
An oil filter device comprising an outer cylindrical container member having inner and outer ends, the outer end of said member being closed, said inner end having a central annular outlet aperture with internally threaded walls adapted to engage exteriorly threaded walls of an annular conduit extending from an engine block, the outer regions of said inner end having inlet apertures formed therein, a cylindrical perforated shell centrally located within said outer member and defining a filtering region between the cylindrical walls of the outer container and said shell, an accordian-shaped filter element located in said filtering region, and within the perforated shell a core region, said core region adapted to contain a magnesium metal helical structure within which structure is retained at least one bar of magnetic metal, the inner terminus of said helical structure extending into said central outlet aperture, central windings of said helical structure having a radius less than the radius of said central outlet aperture and greater than the radius of the said annular conduit, whereby oil flowing inwardly through said filtering element flows past said helical structure and magnetic bar, and metallic particles in said oil are removed by said magnetic bar, and acid carried by said oil is neutralized by said magnesium metal, and said oil flows out of said oil filter device through said central outlet aperture.
Claim 4
Dependent Claim
225 words
An oil filter device comprising an outer cylindrical container member having inner and outer ends, the outer end of said member being closed, said inner end having a central annular outlet aperture with internally threaded walls adapted to engage exteriorly threaded walls of an annular conduit extending from an engine block, the outer regions of said inner end having inlet apertures formed therein, a cylindrical perforated shell centrally located within said outer member and defining a filtering region between the cylindrical walls of the outer container and said shell, an accordian-shaped filter element located in said filtering region, and within the perforated shell a core region, said core region adapted to contain a magnesium metal helical structure within which structure is retained at least one bar of magnetic metal, the inner terminus of said helical structure extending into said central outlet aperture, central windings of said helical structure having a radius less than the radius of said central outlet aperture and greater than the radius of the said annular conduit, whereby oil flowing inwardly through said filtering element flows past said helical structure and magnetic bar, and metallic particles in said oil are removed by said magnetic bar, and acid carried by said oil is neutralized by said magnesium metal, and said oil flows out of said oil filter device through said central outlet aperture.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |