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US 6,270,667 B1Granted
Oil filter not using filter paper but using permanent magnets
OwnerKoji Nakamurainventor
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OwnerKoji Nakamurainventor
Estimating the term…
An oil filter, not using a filter paper element, and not having a strainer component, including an array of relatively large permanent magnets, either disc-shaped or stick-shaped. The array is dimensioned to occupy an area which is substantially equal to an area within a case for said array of permanent magnets, such that the array substantially fills the entire area of the case element. The individual permanent magnets within the array are separated equidistantly from one another by non-magnetic separating elements and the equidistant separation interval is less than half of an interval that the individual permanent magnets would naturally repel one another as a result of the magnets being positioned in opposing polar relationship. The relatively large dimension of the individual permanent magnets within the case element allows the filter to remove metallic microparticles more efficiently than in the past.
An oil filter, not using a filter paper element, and not using a strainer component, said filter comprising relatively large permanent magnets configured in an array, said array dimensioned to occupy an area which is substantially equal to an area within a case for said array of permanent magnets, such that said array substantially fills the entire area of said case element, said array further comprising a plurality of individual permanent magnets positioned in opposing polar relationship and separated equidistantly from one another by non-magnetic, perforated separation elements, said equidistant separation interval being less than one-half of an interval that said individual permanent magnets would naturally repel one another as a result of a magnetic field existing therebetween.
An oil filter, not using a filter paper element and not having a strainer component, said filter comprising a plurality of relatively large disc-shaped permanent magnets configured in an array, said array dimensioned to occupy an area which is substantially equal to an area within a case for said array of disc-shaped permanent magnets, such that said array substantially fills the entire area of said case element, said plurality of disc-shaped magnets positioned in opposing polar relationship and separated equidistantly from one another by non-magnetic, perforated separation elements, said equidistant separation interval being less than one-half of an interval that said individual disc-shaped permanent magnets would naturally repel one another as a result of a magnetic field existing therebetween.
An oil filter, not using a filter paper element and not having a strainer component, said filter comprising a plurality of stick-shaped relatively large permanent magnets configured in an array, said array dimensioned to occupy an area which is substantially equal to an area within a case for said array of said permanent magnets, such that said array substantially fills the entire area of said case element, and wherein said individual permanent magnets are positioned equidistantly from one another in opposing polar relationship, said equidistant separation interval being less than one-half of an interval that said individual permanent magnets would naturally repel one another as a result of a magnetic field existing therebetween.
Dependencies are inferred from the claim text.