Filter device
First Claim
1. A filter device comprising:
- a filter housing with a filter housing pot and a cover screwable onto the filter housing pot; and
an annular filter element arranged in the filter housing, the annular filter element having an axially protruding pin for closing a run-off channel;
wherein the annular filter element is connected to the cover via a first thread;
wherein the first thread has a dome protruding centrally and axially from an upper end disc of the annular filter element, with an outer thread interrupted by free passages, and hollow cylindrical spring elements which protrude axially from the cover and on which an inner thread portion designed to complement the outer thread is arranged;
wherein each inner thread portion extends over a longer circumferential portion than one of the free passages;
wherein the first thread is designed running counter to a second thread arranged between the filter housing pot and the cover.
1 Assignment
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Accused Products
Abstract
A filter device may include a filter housing with a filter housing pot and a cover screwable onto the filter housing pot, and an annular filter element arranged in the filter housing and having an axially protruding pin for closing a run-off channel. The annular filter element may be connected to the cover via a first thread, which may have a dome protruding centrally and axially from an upper end disc of the annular filter element, with an outer thread interrupted by free passages, and hollow cylindrical spring elements, which may protrude axially from the cover and on which an inner thread portion designed to complement the outer thread may be arranged. Each inner thread portion may extend over a longer circumferential portion than one of the free passages. The first thread may be designed running counter to a second thread arranged between the filter housing pot and the cover.
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Citations
20 Claims
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1. A filter device comprising:
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a filter housing with a filter housing pot and a cover screwable onto the filter housing pot; and an annular filter element arranged in the filter housing, the annular filter element having an axially protruding pin for closing a run-off channel; wherein the annular filter element is connected to the cover via a first thread; wherein the first thread has a dome protruding centrally and axially from an upper end disc of the annular filter element, with an outer thread interrupted by free passages, and hollow cylindrical spring elements which protrude axially from the cover and on which an inner thread portion designed to complement the outer thread is arranged; wherein each inner thread portion extends over a longer circumferential portion than one of the free passages; wherein the first thread is designed running counter to a second thread arranged between the filter housing pot and the cover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 12, 13, 14, 15)
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8. An annular filter element for a filter device, comprising:
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an axially and eccentrically protruding pin; a dome protruding centrally and axially from an upper end disc with an outer thread interrupted by free passages. - View Dependent Claims (9, 10, 11)
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16. A filter device comprising:
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a filter housing with a filter housing pot and a cover screwable onto the filter housing pot; and an annular filter element arranged in the filter housing, the annular filter element having an axially protruding pin for closing a run-off channel; wherein the annular filter element is connected to the cover via a first thread; wherein the first thread has a dome protruding centrally and axially from an upper end disc of the annular filter element, with an outer thread interrupted by free passages, and hollow cylindrical spring elements which protrude axially from the cover and on which an inner thread portion designed to complement the outer thread is arranged; wherein each inner thread portion extends over a longer circumferential portion than one of the free passages; wherein the first thread is designed running counter to a second thread arranged between the filter housing pot and the cover; wherein on a face side of the dome a carrier geometry is arranged, which cooperates with a counter-carrier geometry on a cover side such that the annular filter element on mounting of the cover co-rotates until the pin engages into the run-off channel. - View Dependent Claims (17, 18, 19, 20)
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Specification