![]() ![]() As one extends rearwardly in the direction away from plate 20, the internal diameter of tube 16 expands so that at its innermost edge 52, its innermost surface has a diameter which is greater than the external diameter of tube 50, generally approximately 0.2 inches or more in diameter greater than the exterior diameter of tube 50. The first portion 49 of tube 16, i.e., the first three-quarters of an inch has a diameter approximately equal to the external diameter of duct 50, generally about four inches in diameter. 2, tube member 16 is designed to extend two to three inches or more inwardly beyond the plane of plate 20. This simply is an added feature to prevent birds and rodents from entering through the opening.Īs shown more particularly in FIG. 1-3 incorporate a circular flap 32 which is pivotally attached to plate 20 at tab 34 allowing it to rotate open in the direction of arrow 36 in response to air pressure. 21, 2002 entitled DRYER VENT, the disclosure of which is incorporated herein by reference.įurther the embodiment shown in FIGS. These are more particularly described in pending application Ser. ![]() 1 and 2 also incorporates a paddlewheel 46 which rotates on axle 44 which extends between tabs 38 and 40. Also, they are designed to prevent cold air from entering through the vent. These exterior portions such as hood 12 are designed to prevent rain from entering the building through the vent. It can also include a siding reveal (i.e., J-channel) if desired. The present invention can also be used with a typical flat louvered vent, metal grading or the like, basically any structure used for a dryer vent. ![]() Between the hood portion 12 and the tube 16 is a plate 20 having a nailing flange 22 which attaches to the side of the building and defines opening 18. The hood 12 is designed to face away from the exterior of the building with the tube 16 extending into the building. The present invention is a dryer vent 10 shown with a hood portion 12, a rearwardly extended tubular extension or tube member 16 which extends from circular opening 18. 3 is a perspective view of the present invention partially in phantom and partially broken away. 2 is a cross-sectional view taken at lines 2-2 of FIG. 1 is a perspective view of the present invention.įIG. The objects and advantages of the present invention will be further appreciated in light of the following detailed descriptions and drawings in which: BRIEF DESCRIPTION OF DRAWINGSįIG. This allows the existing duct to simply slide within the tube to provide an adequate connection between the dryer vent and the duct. In other words, the internal diameter of the interior side edge is wider than the internal diameter of the tube at its extension side. The tube portion extends inwardly approximately two to three inches and its interior most surface has an interior diameter that increases as it extends away from the vent. The vent includes an inwardly extended tube portion. More particularly, the present invention is an external vent adapted to be attached to the exterior of a building. SUMMARY OF THE INVENTIONĪccordingly it is an object of the present invention to provide a dryer vent wherein the dryer vent can be replaced without replacing the metal duct which extends through the house. This, however, is impossible with current structures because the metal tube is typically attached to the hood or louvered vent by a small channel that extends either only to the exterior surface of the building or slightly inwardly approximately an inch. It would be preferable, however, to simply replace the exterior hood or louvered vent without replacing the internal metal tubing. This is relatively time consuming in that it requires the individual to disconnect the dryer, move it out of the way and the install the new dryer vent. ![]() In such situations the old dryer vent must be replaced and a complete new dryer vent installed with a new metal tube extending back through the wall. When houses are remodeled, it is typical to replace these dryer vents particularly if vinyl siding is being applied to the exterior of the building. This in turn is attached to the dryer via a flexible duct or sheet metal duct. Dryer vents typically include an external hood or louvered vent which attaches to a metal tube which extends through a building wall. ![]()
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