Sealed damper
OwnerMichael Ross Cates, John Brad Faerberinventors
Life of this patent
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Abstract
A sealed chimney damper is provided for preventing flow of air between an interior and exterior of a structure through a chimney. The sealed damper includes a damper body having an inlet aperture and an outlet aperture; an upper flange formed around the outlet aperture of the damper body; a valve plate hingedly secured to the damper body adjacent the outlet aperture, the valve plate sized to substantially cover the outlet aperture when the valve plate is in a closed position; and a gasket secured to the upper flange of the damper body and surrounding the outlet aperture, wherein the gasket is positioned between the valve plate and damper body when the valve plate is in a closed position.
Claims14
A sealed chimney damper comprising:
- a damper body including
- an inlet aperture in fluid communication with a fireplace,
- an outlet aperture in fluid communication with a chimney flue, and
- a plurality of damper walls extending between the inlet aperture and the outlet aperture,
- an upper flange formed around the outlet aperture of the damper body, the flange including a flat surface formed thereon,
- a lower flange formed around the inlet aperture of the damper and
- at least one hinge stop projecting upwardly from the lower flange;
- a valve plate positioned adjacent to the outlet aperture of the damper body, the valve plate sized to substantially cover the outlet aperture when the valve plate is in a closed position;
- and
- a gasket secured to the flat surface formed on the flange of the damper body and surrounding the outlet aperture;
- wherein in an open position, an edge of the valve plate rests against the lower flange and the at least one hinge stop extending upwardly therefrom, and wherein in the open position the valve plate is not substantially supported on the gasket;
- wherein in a closed position, the valve plate substantially rests on the gasket to create a seal between the valve plate and the damper body to prevent substantial loss of air through the sealed chimney damper when the fireplace is not in use.
A sealed chimney damper comprising:
- an inlet aperture formed along a bottom portion of the damper body in fluid communication with a fireplace;
- an outlet aperture formed along a top portion of the damper body in fluid communication with a chimney flue, the outlet aperture angled from about 15 to about 60 relative to the inlet aperture;
- a plurality of damper walls extending between the inlet aperture and the outlet aperture,
- a lower flange formed around the inlet aperture;
- and
- an upper flange formed around the outlet aperture and extending outwardly orthogonally from the damper body, the upper flange including a flat surface formed thereon;
- at least one hinge stop projecting upwardly from the lower flange;
- a valve plate hingedly secured to the damper body adjacent the outlet aperture, the valve plate sized to substantially cover the outlet aperture when the valve plate is in a closed position, wherein a surface of the valve plate is aligned with the flange formed around the outlet aperture of the damper body when the valve plate is in the closed position;
- a gasket secured to the flat surface of the flange of the damper body, the gasket including a bulb portion and a flange portion;
- an elongate hinge bar positioned between the valve plate and damper body, wherein the hinge bar maintains the valve plate at a radius above the gasket when the valve plate is moved between a closed position and an open position;
- and
- one or more hinge stops extending upwardly from the lower flange of the damper body adjacent the valve plate to prevent the valve plate from opening beyond an angle of approximately 900 relative to the damper body;
- wherein in the open position, an edge of the valve plate rests against the lower flange and the at least one hinge stop extending upwardly therefrom, and wherein in the open position the valve plate is not substantially supported on the gasket;
- wherein in the closed position, the valve plate substantially rests on the gasket to create a seal between the valve plate and the damper body to prevent substantial loss of air through the sealed chimney damper when the fireplace is not in use.
Dependencies are inferred from the claim text.