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US 8,709,247 B2Granted
Filter apparatus with ejection arrangement
AssigneeBaldwin Filters, Inc.
InventorsJohn H. Beard, Stephen Schweitzer
Life of this patent
Estimating the term…
Abstract
A filter cartridge including catches for ejecting the filter cartridge from a filter housing as the filter cartridge and filter housing are removed from a filter base is provided. The catches are configured to engage corresponding catches of the filter base to limit axial motion of the filter cartridge as the filter cartridge and filter housing are threadedly removed from the filter base.
Claims21
A filter arrangement comprising:
- a filter base;
- a filter element selectively mountable to the filter base, the filter element including:
- an outer housing including a sidewall defining an open end;
- a filter cartridge axially received within the filter housing slidable between a released position relative to the housing where the filter cartridge can be removed from the housing a first amount of axial force and an inserted position relative to the housing where a second amount of force, greater than the first amount of force, is required to axially transition the filter element relative to the filter housing to the released position, the filter cartridge including filter media for filtering fluid passing through the filter element;
- and
- an auto-ejecting interface provided between the filter element and the filter base configured to transition the filter cartridge to the released position from the inserted position as the filter element is transitioned from a mounted state to an unmounted state relative to the filter base.
3 more elements
A filter cartridge comprising:
- a tubular ring of filter media;
- a first end cap attached to a first end of the filter media;
- a filter cartridge abutment catch including an axially extending leg portion and a head portion extending radially from the leg portion, the radially extending head portion defining an abutment surface axially facing towards the filter media;
- and
- a radially outward directed first seal proximate a radially outer rim of the first end cap for sealing the end cap to a filter housing;
- and
- a central hub, the central hub carrying a second seal for sealing with a filter base, the filter cartridge abutment catch being radially positioned between the first and second seals.
4 more elements
Dependencies are inferred from the claim text.