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US 11,446,593 B2Granted
Filter arrangements for liquids and methods of use
AssigneeDonaldson Company, Inc.
InventorsKurt B. Joscher, Mark C. Shepherd, Patricia L. Palmby
Life of this patent
Estimating the term…
Abstract
A filter cartridge has media construction, a housing, and a first end construction. The first end constructions includes an outer radial wall with circumferentially spaced connecting sections; each connecting section having a plurality of helical profiles extending at a helix angle. The filter cartridge is removably attached to a filter head, which has mating connecting segments. A bowl cartridge assembly is also provided including connecting sections with a plurality of helical profiles.
Claims29
A filter cartridge comprising:
- (a) a treatment media construction having a first end and an opposite second end;
- (b) a first end construction adjacent to the first end of the media construction;
- wherein the first end construction includes an outer radial wall and an axial wall;
- (i) the axial wall covering the first end of the media construction;
- (ii) the outer radial wall having a plurality of connecting sections alternating with non-connecting sections, wherein each connecting section has a plurality of helical profiles extending at a helix angle;
- (c) a filter housing having a surrounding wall defining an exterior, an interior, a bottom, and an opposite mouth;
- (i) the filter housing being secured to the outer radial wall at the mouth;
- and
- (ii) the media construction being positioned within the interior and spaced from the surrounding wall.
6 more elements
A filter cartridge comprising:
- (a) a treatment media construction having a first end and an opposite second end;
- (b) a first end construction adjacent to the first end of the media construction;
- (c) wherein the first end construction includes an outer radial wall and an axial wall;
- (i) the axial wall covering the first end of the media construction;
- (ii) the outer radial wall having a plurality of circumferentially spaced connecting sections;
- each connecting section having a plurality of helical profiles extending at a helix angle;
- (iii) each of the helical profiles within each connecting section has a different cross-sectional shape from at least one other helical profile within a respective connecting section;
- (d) a filter housing having a surrounding wall defining an exterior, an interior, a bottom, and an opposite mouth;
- (i) the filter housing being secured to the outer radial wall at the mouth;
- and
- (ii) the media construction being positioned within the interior and spaced from the surrounding wall.
8 more elements
A filter cartridge comprising:
- (a) a treatment media construction having a first end and an opposite second end;
- (b) a first end construction adjacent to the first end of the media construction;
- (c) wherein the first end construction includes an outer radial wall and an axial wall;
- (i) the axial wall covering the first end of the media construction;
- (ii) the outer radial wall having a plurality of circumferentially spaced connecting sections;
- each connecting section having a plurality of helical profiles extending at a helix angle;
- (iii) within each connecting section, each of the helical profiles being axially spaced from an adjacent helical profile, and the axially spacing between at least one helical profiles and a second helical profile is different from remaining axially spacing;
- and
- (d) a filter housing having a surrounding wall defining an exterior, an interior, a bottom, and an opposite mouth;
- (i) the filter housing being secured to the outer radial wall at the mouth;
- and
- (ii) the media construction being positioned within the interior and spaced from the surrounding wall.
9 more elements
A filter cartridge comprising:
- (a) a treatment media construction having a first end and an opposite second end;
- (b) a first end construction adjacent to the first end of the media construction;
- wherein the first end construction includes an outer radial wall and an axial wall;
- (i) the axial wall covering the first end of the media construction;
- (ii) the outer radial wall having a plurality of connecting sections alternating with non-connecting sections;
- (c) a filter housing having a surrounding wall defining an exterior, an interior, a bottom, and an opposite mouth;
- (i) the filter housing being secured to the outer radial wall at the mouth;
- and
- (ii) the media construction being positioned within the interior and spaced from the surrounding wall;
- and
- (d) at least one spring-loaded detent extending axially outwardly from the axial wall of the first end construction.
8 more elements
Dependencies are inferred from the claim text.