Flow control damper
First Claim
Patent Images
1. A damper comprising:
- a pair of damper members movable in an axial direction with respect to each other between open and closed positions, the damper members having respective funnel shaped portions each including at least one wall correspondingly inclined to an axis of the damper, the inclined walls including plural apertures separated by imperforate portions, the apertures in each wall being disposed such that the apertures of the inclined wall of one of the damper members are at least partially blocked by the imperforate portions of the inclined wall of the other damper member when the damper members are in the closed position; and
an actuating assembly connected to an apex of one of the damper members for moving the damper members relative to one another.
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Abstract
A damper including a pair of damper members movable with respect to each other is disclosed. Each damper member has at least one wall correspondingly inclined to an axis of the damper. The inclined walls are relatively movable between open and closed positions. The walls include plural apertures separated by imperforate portions. The apertures in each wall are disposed such that the apertures of one of the damper members are at least partially blocked by the imperforate portions of the other damper member when the inclined walls are in the closed position.
48 Citations
36 Claims
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1. A damper comprising:
- a pair of damper members movable in an axial direction with respect to each other between open and closed positions, the damper members having respective funnel shaped portions each including at least one wall correspondingly inclined to an axis of the damper, the inclined walls including plural apertures separated by imperforate portions, the apertures in each wall being disposed such that the apertures of the inclined wall of one of the damper members are at least partially blocked by the imperforate portions of the inclined wall of the other damper member when the damper members are in the closed position; and
an actuating assembly connected to an apex of one of the damper members for moving the damper members relative to one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
- a pair of damper members movable in an axial direction with respect to each other between open and closed positions, the damper members having respective funnel shaped portions each including at least one wall correspondingly inclined to an axis of the damper, the inclined walls including plural apertures separated by imperforate portions, the apertures in each wall being disposed such that the apertures of the inclined wall of one of the damper members are at least partially blocked by the imperforate portions of the inclined wall of the other damper member when the damper members are in the closed position; and
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36. A damper comprising:
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a pair of damper members movable in an axial direction with respect to each other between open and closed positions, the damper members having respective funnel shaped portions each including at least one wall correspondingly inclined to an axis of the damper, the inclined wall including plural apertures separated by imperforate portions, the apertures in each wall being disposed such that the apertures of the inclined wall of one of the damper members are at least partially blocked by the imperforate portions of the inclined wall of the other damper member when the damper members are in the closed position; and
an actuating assembly connected to an apex of one of the damper members for moving the damper members relative to one anotherwherein the pair of funnel shape damper members comprise inner and outer funnel shape damper members, the inner funnel shape damper member being disposed substantially inwardly of the outer funnel shape damper member further including inner and outer skirt portions connected to the respective inner and outer damper members, the outer skirt portion being sized to fit into a first duct, wherein the first duct includes an annular bead and the outer skirt portion includes one or more nodules which snap into the bead when the outer skirt portion is inserted into the first duct, thereby securing the outer skirt portion in engagement with the first duct.
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Specification