Liquid filter assembly
OwnerNorbert Assioninventor
Life of this patent
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Abstract
A liquid filter assembly including a first liquid filter element adapted to filter particles larger than a first size; a second different liquid filter element adapted to filter particles larger than a second size; a housing having the first and second liquid filter elements therein. The second size is smaller than the first size. The housing forms a first liquid flow path having the first liquid filter element therein, and a second liquid flow path having the second liquid filter element therein. The second filter element comprises a formed porous polymer member.
Claims27
A liquid filter assembly comprising:
- a first liquid filter element adapted to filter particles larger than a first size;
- a second different liquid filter element adapted to filter particles larger than a second size, the second size being smaller than the first size;
- a housing having the first and second liquid filter elements therein, the housing forming a first liquid flow path having the first liquid filter element therein, and a second liquid flow path having the second liquid filter element therein,
- wherein the second filter element comprises a formed porous polymer member.
A liquid filter assembly comprising:
- a first liquid filter element adapted to filter particles larger than a first size;
- a second different liquid filter element located at least partially above the first filter element and adapted to filter particles larger than a second size, the second size being smaller than the first size;
- a housing having the first and second liquid filter elements therein, the housing forming a first liquid flow path having the first liquid filter element therein, and a second liquid flow path having the second liquid filter element therein,
- wherein the second filter element comprises a molded porous member comprising a polymer material.
A liquid filter assembly comprising:
- a first liquid filter element adapted to filter particles larger than a first size;
- a second different liquid filter element adapted to filter particles larger than a second size, the second size being smaller than the first size;
- a housing having the first and second liquid filter elements therein, the housing forming a first liquid flow path having the first liquid filter element therein, and a second liquid flow path having the second liquid filter element therein,
- wherein the second filter element comprises an extruded porous member comprising a polymer material.
A method of manufacturing a liquid filter assembly comprising:
- providing a first filter element having a general ring shape;
- providing a second filter element, the second filter element comprising a formed porous polymer member;
- connecting the second filter element to the first filter element;
- and
- locating the first filter element and the second filter element in a housing, wherein a first liquid flow path is provided in the housing through the first filter element and a second liquid flow path is provided in the housing through the second filter element, and wherein the first and second flow paths merge in a central area inside the general ring shape of the first filter element.
Dependencies are inferred from the claim text.