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US 11,938,910 B2Granted
Non-return valve device
AssigneeKNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
InventorJuergen Moser
Life of this patent
Estimating the term…
Abstract
A non-return valve device has at least part of a flow channel for a fluid and a movable cord-like sealing element arranged in the flow channel. The sealing element is configured such that it can be moved at least partially between a closed position and an open position, wherein, in the open position, a fluid flow is permitted through the flow channel, whereas in the closed position, the fluid flow through the flow channel is blocked by form-fitting engagement with the sealing element.
Claims19
A non-return valve device, comprising:
- a housing;
- a fluid processing device arranged in the housing and positioned in a flow path of a fluid;
- at least one part of a flow channel for the fluid defining a bypass for the flow path;
- and
- a movable cord-shaped sealing element arranged in the flow channel, wherein
- the sealing element is configured so as to be movable between first and second surfaces without at least partially being fixed to the first and second surfaces and so as to be movable at least partially between a closed position and an open position, wherein at least the first surface forms a part of the at least one part of the flow channel, wherein first and second sealing edges, which limit movement of the sealing element, extend between the first and second surfaces at an angle or perpendicularly with respect to a movement direction of the sealing element, wherein the first and second sealing edges have first and second heights respectively, wherein the first height is greater than the second height, and wherein the first sealing edge is positioned closer to the first surface than the second sealing edge, wherein
- in the open position, a fluid flow is permitted through the flow channel, and
- in the closed position, the fluid flow through the flow channel is blocked by form-fitting engagement between with the sealing element, the second sealing edge and the first surface.
5 more elements
A non-return valve device, comprising:
- at least one part of a flow channel for a fluid;
- a movable cord-shaped sealing element arranged in the flow channel, wherein
- the sealing element is configured so as to be movable between first and second surfaces without at least partially being fixed to the first and second surfaces and so as to be moved movable at least partially between a closed position and an open position, wherein at least the first surface forms a part of the at least one part of the flow channel, wherein first and second sealing edges, which limit movement of the sealing element, extend between the first and second surfaces at an angle or perpendicularly with respect to a movement direction of the sealing element, wherein the first and second sealing edges have first and second heights respectively, wherein the first height is greater than the second height, and wherein the first sealing edge is positioned closer to the first surface than the second sealing edge, wherein
- in the open position, a fluid flow is permitted through the flow channel, and
- in the closed position, the fluid flow through the flow channel is blocked by form-fitting engagement between with the sealing element, the second sealing edge and the first surface;
- two surfaces arranged concentrically with respect to a longitudinal axis of the device, which surfaces are perpendicular or inclined with respect to the longitudinal axis, or
- a groove, wherein
- multiple annularly arranged openings are formed in at least one of the surfaces or in the groove, wherein, in the closed position of the sealing element, a fluid flow through at least one of the openings is blocked by an annular sealing element which is arranged between the surfaces or in the groove and which surrounds the annularly arranged openings, and in the open position of the sealing element, a fluid flow through at least one of the openings is permitted by virtue of the annular sealing element being arranged such that at least one section of the sealing element is situated between the at least one opening and the longitudinal axis of the device.
5 more elements
A non-return valve device, comprising:
- at least one part of a flow channel for a fluid;
- a movable cord-shaped sealing element arranged in the flow channel, wherein
- the sealing element is configured so as to be movable between first and second surfaces without at least partially being fixed to the first and second surfaces and so as to be moved movable at least partially between a closed position and an open position, wherein at least the first surface forms a part of the at least one part of the flow channel, wherein first and second sealing edges, which limit movement of the sealing element, extend between the first and second surfaces at an angle or perpendicularly with respect to a movement direction of the sealing element, wherein the first and second sealing edges have first and second heights respectively, wherein the first height is greater than the second height, wherein the second height is less than half of a height of a bypass channel defined between the second sealing edge and the first surface, and wherein the first sealing edge is positioned closer to the first surface than the second sealing edge, wherein
- in the open position, a fluid flow is permitted through the flow channel, and
- in the closed position, the fluid flow through the flow channel is blocked by form-fitting engagement between with the sealing element, the second sealing edge and the first surface.
2 more elements
Dependencies are inferred from the claim text.