Removable Cartridge Design with Threaded Center Tube
AssigneeParker-Hannifin Corporation
InventorsKevin B. Downs, Wayne J. Dube, Bradford W. Fleming
Life of this patent
Estimating the term…
Abstract
A filter element is useable with a mounting bowl for mounting to a filtration header to provide for liquid filtration, for example fuel filtration. The filter element can have a central inlet passageway and/or a threaded center tube portion that may be used to perform separate functions such as allowing opening and closing of a drain valve on the mounting bowl to allow drainage and/or to facilitate mechanical advantage to translate the filter element relative to the bowl by a service mechanic during filter replacement. Additionally, this configuration also allows a water-in-fuel (WIF) sensor to be mounted into a stem portion of the drain valve.
Claims21
A filter element, comprising:
- a ring of filter media;
- an upper end cap and a lower end cap, with the ring of filter media extending between the upper end cap and the lower end cap;
- an inlet entrance port and an outlet port at an upper end of the filter element, and an inlet exit port at a lower end of the filter element;
- a central conduit extending inside the ring of filter media, the central conduit defining an inlet passageway passing through the upper end cap and the lower end cap and fluidically communicating between the inlet entrance port and the inlet exit port;
- and
- an outlet passageway between the central conduit and the ring of filter media and fluidically communicating with the outlet port.
A filter element, comprising:
- a ring of filter media;
- an upper end cap and a lower end cap, with the ring of filter media extending between the upper end cap and the lower end cap;
- a central conduit extending through the filter media providing a first passageway centrally through the filter element along an interior of the conduit and providing a second passageway along an exterior of the conduit toward one end of the filter element;
- and
- a threaded region defined by a radially inner surface of the central conduit along the first passageway.
A filter element, comprising:
- i) a ring of media, ii) upper and lower end cap assemblies, each of which includes a central annular body portion, and iii) a center support core;
- a flow channel between the ring of media and the center support core, and a flow opening in the central body portion of the upper end cap assembly into the flow channel;
- the upper end cap and/or the center support core including an internal threaded segment;
- a first O-ring supported around the periphery of a distal end of the center support core projecting outwardly away from the upper end cap assembly;
- a second O-ring supported around the periphery of a fluid tube radially-outwardly surrounding the center support core and also projecting outwardly away from the upper end cap assembly, the fluid and a third O-ring supported around the periphery of the central body portion of the first end cap assembly.
Dependencies are inferred from the claim text.