Ventilated poppet damper
AssigneeAmerican Air Filter Company, Inc.
InventorRobert G. Huntington
Life of this patent
Estimating the term…
Abstract
A ventilated poppet damper assembly for use in a gas conveying conduit to selectively allow and prevent the flow of gas through the conduit has a movable pair of spaced apart damper plates which define a transverse chamber when in the closed position. The transverse chamber is vented to insure that there is no leakage of conveyed gas past the closed damper plates.
Claims18
A ventilated poppet damper assembly for selectively opening and closing the gas stream passageway through a gas conveying conduit, the ventilated damper assembly comprising:
- a first peripheral sealing seat disposed within the conduit;
- a second peripheral sealing seat disposed within the conduit and spaced from the first peripheral sealing seat;
- a hollow close-ended activating rod coaxially disposed within the conduit and mounted for axial movement therein;
- a first damper plate coaxially disposed with the hollow rod and attached thereto proximate one of the rod ends for movement with the rod between an open position spaced from the first peripheral sealing seat and a closed position engaging the first peripheral sealing seat;
- a second damper plate coaxially disposed with the hollow rod, spaced from the first damper plate, and attached to the hollow rod for movement therewith between an open position spaced from the second peripheral sealing seat and a closed position engaging the second peripheral sealing seat;
- the first and second damper plates cooperating, in the closed position, to define a transverse chamber;
- means for axially moving the rod and, therefore, the first and second damper plates as a unit with the rod between the open and closed positions;
- and,
- means for ventilating the transverse chamber through the hollow rod.
A ventilated poppet damper assembly for selectively opening and closing the gas stream passageway through a gas conveying conduit, the ventilated poppet damper assembly comprising:
- a housing having a gas inlet opening in communication with the gas conveying conduit and a gas outlet opening in communication with the gas conveying conduit;
- a first peripheral sealing seat disposed within the housing;
- a second peripheral sealing seat disposed within the housing and spaced from the first peripheral sealing seat;
- a hollow close-ended activating rod disposed within the housing coaxial with the first and second peripheral sealing seats and mounted for axial movement;
- a first damper plate coaxially disposed with the hollow rod and attached thereto proximate one of the rod ends for movement with the rod between an open position spaced from the first peripheral sealing seat and a closed position engaging the first peripheral sealing seat;
- a second damper plate coaxially disposed with the hollow rod, spaced from the first damper plate, and attached to the hollow rod for movement therewith between an open position spaced from the second peripheral sealing seat and a closed position engaging the second peripheral sealing seat;
- the first and second damper plates cooperating, in the closed position, to define a transverse chamber;
- means for axially moving the rod and, therefore, the first and second damper plates as a unit with the rod between the open and closed positions;
- and,
- means for ventilating the transverse chamber through the hollow rod.
Dependencies are inferred from the claim text.