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US 2021/0108697 A1Published application
Damping valve device for a vibration damper
AssigneeZF Friedrichshafen AG
InventorsJörg RÖSSELER, Aleksandar KNEZEVIC
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Abstract
A damping valve device having a support with a circumferential groove in which a radially expandable annular element together with a flow surface forms a restriction, which restriction transitions from an open position to a restriction position depending on the flow velocity of a damping medium, and the maximum expansion position of the annular element is determined/limited by a stop. The annular element moves in direction of the open position with a delay when the flow velocity decreases by means of a dead time element.
Claims9
A damping valve device comprising:
- an annular element that is radially expandable;
- a support with a circumferential groove in which the annular element together with a flow guiding surface forms a restriction,
- wherein the restriction transitions from an open position to a restriction position depending on a flow velocity of a damping medium, and
- a stop determines, at least in part, a maximum expansion position of the annular element
- wherein the annular element moves in direction of the open position with a delay when the flow velocity decreases by a dead time element.
2 more elements
Dependencies are inferred from the claim text.