IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0782816
(2010-05-19)
|
등록번호 |
US-8439088
(2013-05-14)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Ford Global Technologies, LLC
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
15 |
초록
▼
A one-way valve for a fuel-tank filling conduit deters siphoning and prevents back flow of fuel. The one-way valve comprises a blocking element arranged in the conduit and pivotable between a flow-blocking, object-insertion blocking first position and a flow-admitting, object-insertion blocking seco
A one-way valve for a fuel-tank filling conduit deters siphoning and prevents back flow of fuel. The one-way valve comprises a blocking element arranged in the conduit and pivotable between a flow-blocking, object-insertion blocking first position and a flow-admitting, object-insertion blocking second position. In the second position the blocking element divides the conduit into flow areas of comparable width. The one-way valve further comprises a bias element that biases the blocking element to the first position.
대표청구항
▼
1. A one-way valve comprising: a plurality of blocking elements arranged in a vehicle fuel filling conduit, pivotable in a same rotational direction with respect to one another between a flow-blocking, object-insertion blocking first position and a flow-admitting, object-insertion blocking second po
1. A one-way valve comprising: a plurality of blocking elements arranged in a vehicle fuel filling conduit, pivotable in a same rotational direction with respect to one another between a flow-blocking, object-insertion blocking first position and a flow-admitting, object-insertion blocking second position, in which second position the plurality of blocking elements divides the conduit into flow areas of comparable width; anda bias element extending from one side of the conduit to an opposite side of the conduit and biasing the plurality of blocking elements to the first position. 2. The valve of claim 1, wherein each of the plurality of blocking elements is configured to pivot from the first position to the second position about a corresponding pivot axis in the same rotational direction with respect to the corresponding pivot axis in response to a downward flow potential in the conduit, and wherein the bias element pivots the plurality of blocking elements from the second position to the first position absent the downward flow potential. 3. The valve of claim 1, wherein at least one of the plurality of blocking elements comprises one or more of a slat and a vane, and wherein a smallest of the flow areas of comparable width is less than 5.2 millimeters in width. 4. The valve of claim 1, wherein the plurality of blocking elements are arranged in the conduit and configured to pivot from the first position to the second position in response to a downward flow potential in the conduit, and wherein adjacent slats seal one upon another in the first position and separate from each other in the second position. 5. The valve of claim 4, wherein the plurality of blocking elements are aligned to a plane, at least one of the plurality of blocking elements extending to overlap a pivot axis of an adjacent one the plurality of blocking elements in the first position, and wherein the plane is oriented obliquely with respect to a direction of fuel flow through the conduit. 6. The valve of claim 4, wherein a top surface of one of the plurality of blocking elements seals against a bottom surface of an adjacent one of the plurality of blocking elements in the first position. 7. The valve of claim 4, wherein a front surface of one of the plurality of blocking elements seals against a rear surface of an adjacent one of the plurality of blocking elements in the first position. 8. The valve of claim 1, wherein the bias element comprises a spring. 9. The valve of claim 8, wherein the spring extends across the conduit, below the plurality of blocking elements, and exerts an upward force on the plurality of blocking elements that biases the plurality of blocking elements to the first position. 10. The valve of claim 8, wherein each of the plurality of blocking elements pivots on a bearing in the same rotational direction with respect to the bearing, wherein the spring is arranged in the bearing and configured to exert a torsional force on the plurality of blocking elements that biases the plurality of blocking elements to the first position. 11. The valve of claim 1 further comprising a pair of opposing pivot pins arranged in the conduit, wherein each of the plurality of blocking elements includes two opposing hinge sections each having a bearing detent, and wherein the bearing detents of the hinge sections are configured to receive the opposing pivot pins. 12. The valve of claim 1 further comprising a pair of opposing bearing detents arranged in the conduit, wherein each of the plurality of blocking elements includes two opposing hinge sections each having a pivot pin about which each of the plurality of blocking elements rotates in the same rotational direction, and wherein the pivot pins of the hinge sections are received in the opposing bearing detents. 13. The valve of claim 1, further comprising a sealing surface inside the conduit, arranged above at least one of the plurality of blocking elements, and configured to seal against a top surface of the at least one of the plurality of blocking elements when the plurality of blocking elements are in the first position. 14. The valve of claim 1, wherein the valve is arranged in a recessed section of an inner wall of the conduit. 15. The valve of claim 1, wherein each of the plurality of blocking elements has, with respect to a direction of fuel flow in the second position, a downstream end, an upstream end thicker than the downstream end, and at least one smooth surface, and wherein the plurality of blocking elements are shaped to receive a lift force in the second position, when fuel is flowing. 16. A fuel system for a motor vehicle, the fuel system comprising: a fuel tank;a filling conduit fluidically coupled to the fuel tank; anda one-way valve coupled in the filling conduit, the valve comprising: a plurality of slats arranged in the conduit and configured to pivot from a flow-blocking, object-insertion blocking first position to a flow-admitting, object-insertion blocking second position in response to a downward flow potential in the conduit, in which second position the blocking element divides the conduit into flow areas of comparable width, the plurality of slats each having a hinge section, the hinge section of each of the plurality of slats pivoting about one or more pivot pins and overlapping an adjacent slat in the first position by nesting within a nook of the adjacent slat; anda bias element having end portions received into a receiving nook formed in the filling conduit, the bias element biasing the plurality of slats to the first position by pivoting the plurality of slats from the second position to the first position absent the downward flow potential. 17. The fuel system of claim 16, wherein the fuel tank is configured to store at least some ethanol. 18. The fuel system of claim 16, wherein a smallest of the flow areas of comparable width is less than 5.2 millimeters in a direction perpendicular to the plurality of slats. 19. A valve for a filling conduit of a motor-vehicle fuel tank, the valve comprising: two or more slats arranged in the conduit and configured to pivot from a flow-blocking, object-insertion blocking first position to a flow-admitting, object-insertion blocking second position in response to a downward flow potential in the conduit, in which first position a front surface of one slat seals against a rear surface of an adjacent slat, and in which second position the blocking element divides the conduit into flow areas of comparable width, the front and rear surfaces of adjacent slats separating from each other in the second position, the two or more slats each including two pivotable hinge sections opposite two opposing nooks, the two opposing nooks defining a front tooth that receives pivotable hinge sections of an adjacent slat when the valve is in the first position; anda spring extending across the conduit below the slats, and configured to exert an upward force on the slats, pivoting the slats from the second position to the first position absent the downward flow potential. 20. The valve of claim 19, wherein the valve is arranged in a recessed section of an inner wall of the conduit. 21. The valve of claim 16, wherein the slats are aligned to a plane, and wherein the plane is oriented obliquely with respect to a direction of fuel flow through the conduit.
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