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US 2002/0162782 A1Published application
Spin-on filter element and filter head
AssigneeParker-Hannifin Corporation
InventorMartin C. Maxwell
Life of this patent
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AssigneeParker-Hannifin Corporation
InventorMartin C. Maxwell
Estimating the term…
A filter head and a spin-on fuel filter element where the filter head includes an inlet and an outlet. A threaded nipple extends downwardly from a base of the filter head and includes a central flow passage. A valve member located in the flow passage is normally biased closed. The valve member includes a threaded portion extending outwardly from the nipple. The filter element includes upper and lower end caps, and is located in a housing having a tap plate. The tap plate includes a threaded central opening for screwing the filter element onto the filter head. The upper end cap supports a threaded sleeve which is screwed onto the valve member. The sleeve/valve member combination has a different thread pitch than the tap plate/nipple combination, which moves the valve member to an open position when the filter element is installed on the filter head.
A filter element including an enclosure and a ring of filtration media disposed within said enclosure and circumscribing a central axis, said ring of filtration media including first and second ends, and first and second end caps at the first and second ends of the filter media ring, said first end cap including a first annular threaded portion having threads of a first pitch, and said enclosure including a second annular threaded portion, co-axially aligned with said first annular threaded portion, said second annular threaded portion having threads of a second pitch, different from said first pitch.
A filter element for attachment to a filter head, wherein the filter head includes a threaded nipple, and an elongated threaded valve member disposed co-axially with the threaded nipple, with the threads on the valve member having a first thread pitch, and the threads on the threaded nipple having a second thread pitch, different from said first thread pitch, the filter element including:
A filter assembly including a filter element and a filter head, the filter head including an inlet and an outlet, a chamber in a base of the head in fluid communication with the inlet, a central annular nipple projecting outwardly away from the base with outwardly-directed threads, said nipple having a flow passage in fluid communication with the outlet in the filter head, and a valve member moveably located with respect to said nipple, said valve member normally in a first position preventing flow through the nipple to the outlet, and moveable to a second position allowing flow through the nipple to the outlet, said valve member including a portion projecting outwardly from said nipple that includes radially-outward directed threads, the threads on said outwardly-projecting portion having a pitch angle different than the pitch angle of the threads on the nipple;
A filter head for a spin-on filter element, the filter head including an inlet and an outlet, a chamber in a base of the head facing the element in fluid communication with the inlet, a central annular nipple with radially-outward directed threads projecting outwardly away from the base, said nipple having a flow passage in fluid communication with the outlet in the filter head, and a valve member moveably located in said nipple, said valve member normally in a first position preventing flow through the nipple to the outlet, and moveable to a second position allowing flow through the nipple to the outlet, said valve member including a portion projecting outwardly from said nipple that includes radially-outward directed threads, the threads on said outwardly-projecting portion having a pitch angle different than the pitch angle of the threads on the nipple.
A filter element including a cylindrical housing and a ring of filtration media disposed within said housing and circumscribing a central axis, said ring of filtration media including first and second ends, said filter element further including first threaded means for receiving the threads on a nipple of a filter head, said first threaded means having threads of a first pitch, and second threaded means for receiving the threads on a valve member in the nipple, said second threaded means co-axially aligned with said first threaded means, and having threads of a second pitch, different from said first pitch.
Dependencies are inferred from the claim text.