# US 5,702,598 A · Magnetic filter

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- Number: US 5,702,598 A
- Document ID: US5702598A
- Status: Granted
- Kind: A
- Application number: 08/716,067
- Filed: 1996-09-19
- Granted: 1997-12-30
- Earliest claimed: 1996-09-19
- Inventors: John Lemon; Kenneth Walthall
- Web page: https://patentgrep.com/patent/US5702598A

## CPC

- F16N 39/06: by filtration (filters in general B01D; magnetic separators B03C1/00; {centrifugal separators or filters B04B5/005})
- B01D 35/06: Filters making use of electricity or magnetism (ultrafiltration, microfiltration B01D61/14; electrodialysis, electro-osmosis B01D61/42; devices comprising filters and magnetic separators B03C1/30)
- B03C 1/288: {disposed at the outer circumference of a recipient}
- F01M 1/10: Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
- B03C 2201/18: Magnetic separation whereby the particles are suspended in a liquid
- B03C 2201/30: for use in or with vehicles
- F16H 57/0404: {Lubricant filters}
- F16N: LUBRICATING
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B03C: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS (separating isotopes B01D59/00; combinations of magnetic or electrostatic separation with separation of solids by other means B03B, B07B)
- F01M: LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F16H: GEARING

## Abstract

A magnetic filter for an oil filter canister used on a vehicle and an oil pan on a vehicle transmission for attracting magnetic particles contained in the oil. The magnetic filter includes a magnet contained in a shallow cup having a suction cup for securing the magnetic filter in the operative position on the filter canister and oil pan.

## Claims

### Claim 1

A magnetic filter adapted to be selectively mounted on an oil filter canister employed in a vehicle, or on the vehicle transmission oil pan comprising a cup, said cup having a bottom wall and an integral side wall, an outwardly extending flange integral with an upper peripheral edge of the side wall, an annular disc supported on the bottom wall of said cup, an annular magnet supported on said annular disc, said annular magnet being substantially coplanar with said outwardly extending flange, means extending through said magnet and said disc for holding the magnet and disc in a centered position within said cup, and a suction cup connected to said outwardly extending flange for selectively connecting the cup and magnet to a surface of the oil filter canister or vehicle transmission pan, whereby the suction cup not only holds the magnetic filter on the surface, but also prevents dust and debris from entering the cup.

### Claim 2 (depends on 1)

A magnetic filter according to claim 1, wherein the means for holding the magnet in a centered position within the cup comprises a button positioned in the center of the magnet and disc, an upwardly extending boss integral with the bottom wall of the cup, and a depending stud integral with said button, said stud inserted into said boss.

### Claim 3 (depends on 1)

A magnetic filter according to claim 1, wherein said suction cup comprises a radially extending portion connected to the outwardly extending flange, a depending skirt portion integral with an inner end of the radially extending portion and extending along an inner surface of the cup side wall, and a resilient lip portion integral with an outer end of said radially extending portion, said resilient lip extending radially outwardly and upwardly from said radially extending portion.

### Claim 4

A magnetic filter adapted to be selectively mounted on an oil filter canister employed in a vehicle, or on the vehicle transmission oil pan comprising a cup, having a bottom wall and an integral side wall, an outwardly extending flange integral with the upper peripheral edge of the side wall, a plurality of circumferentially spaced apertures provided in said outwardly extending flange, and a rubber suction cup having a portion thereof extending through said apertures connecting the suction cup to said outwardly extending flange, whereby the cup and magnet can be selectively connected to a surface of the oil filter canister or vehicle transmission so that the suction cup not only holds the magnetic filter on the surface, but also prevents dust and debris from entering the cup.