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US 2024/0173653 A1Published application
Bowl filter cartridge arrangement having trap and methods
AssigneeDonaldson Company, Inc.
InventorMark C. Shepherd
Life of this patent
Estimating the term…
Abstract
A bowl filter cartridge has an annular trap to catch and collect any contaminant, debris, or unfiltered fuel remaining in the filter housing during filter service. This prevents material being collected in the trap from being transferred to the clean side of a new filter, thereby reducing engine exposure.
Claims24
A filter assembly comprising:
- (a) a housing having a surrounding wall defining an interior volume;
- an open mouth in communication with the interior volume;
- an end opposite of the open mouth;
- and a surrounding trap in the interior volume;
- (i) the surrounding trap including a nonporous upright section radially spaced from the surrounding wall, and a nonporous connecting section bridging the upright section and an interior surface of the surrounding wall;
- (A) the upright section having an upstream surface facing the interior surface of the surrounding wall;
- and
- (b) a filter cartridge removably positioned in the interior volume of the housing;
- the filter cartridge having:
- (i) a media pack having first and second opposite end regions;
- (ii) a first end cap secured to the first end region of the media pack;
- (iii) a second end cap secured to the second end region of the media pack;
- and
- (iv) a seal member on the second end cap and positioned to form a seal with the upstream surface of the upright section.
11 more elements
-6. (canceled)
A method of servicing a bowl cartridge filter assembly;
- the filter assembly having a housing and a removable filter cartridge therein;
- the method comprising:
- (a) removing the filter cartridge from an interior volume of the housing;
- (b) providing a new filter cartridge;
- and
- (c) positioning the new filter cartridge in the interior volume of the housing to orient a seal member secured to the filter cartridge against an upstream surface of an upright section of a trap radially spaced from, and facing, an interior surface of the housing.
3 more elements
A filter cartridge for removable positioning in a bowl-cartridge filter assembly;
- the filter cartridge comprising:
- (a) a media pack having first and second opposite end regions;
- (b) a first end cap secured to the first end region of the media pack;
- (c) a second end cap secured to the second end region of the media pack;
- the second end cap having a seal holder projecting axially therefrom and constructed and arranged for a seal member to form an inwardly directed radial seal;
- and
- (d) a seal member within the seal holder of the second end cap.
4 more elements
-24. (canceled)
(canceled)
A method of servicing a filter assembly;
- the filter assembly having a housing and a removable filter cartridge therein;
- the method comprising:
- (a) removing the filter cartridge from an interior volume of the housing, the housing having an interior surface;
- (b) providing a new filter cartridge having a seal member;
- and
- (c) positioning the new filter cartridge in the interior volume of the housing such that the seal member does not come into contact with the interior surface of the housing before reaching an installed position.
3 more elements
-30. (canceled)
Dependencies are inferred from the claim text.