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Moisture penetration prevention manifoldRelated Patent Categories: Ventilation, Having Outlet AirwayMoisture penetration prevention manifold description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070167129, Moisture penetration prevention manifold. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] The present invention relates to a building wall moisture penetration prevention system comprising a manifold that provides a passageway through a building wall for wires, cables, pipes and other service elements for structures that must pass through the wall of a building between the interior and the exterior. The manifold is water impervious and substantially reduces or eliminates moisture penetration into the wall cavity through the openings for such service elements. [0002] The prior art efforts to provide various flashing systems to reduce moisture intrusion through an exterior building wall structure illustrate the recognition of the problem of moisture intrusion through wall openings. These openings that are flashed include windows, doors and the like. However, providing a passageway through a wall for relatively small service components such as wires, pipes and the like can pass without permitting water intrusion has posed a problem. Openings through the walls are needed. In each instance when the wall is penetrated, that is, when there is an opening through an exterior wall, there is a potential for moisture intrusion into the wall cavity. Moisture penetration has been recognized as a problem that will cause deterioration of the wall structure. [0003] Prior devices have permitted gaps or openings in flashing, and present flashings around pipes on conduits have gaps or openings that permit passage of moisture into the interior cavity of the wall. SUMMARY OF THE INVENTION [0004] The present invention relates to a manifold structure that has a tubular sleeve and a flat plate or flange perpendicular to the sleeve that is sealed against moisture transmission where the plate joins the manifold sleeve. The manifold is effective when used with rigid exterior foam board insulation as well as with conventional building wall constructions for reducing moisture penetration at the wall opening. [0005] An opening is formed through the building wall structure that is of size to receive the tubular sleeve with the plate or flange on the exterior of a sheet of a moisture barrier such as windwrap or a rubber membrane on the outside of the wall panel or sheathing. The wall panel or sheathing is used on the exterior of studs for the wall. The moisture barrier sheet is slit and the upper half of the plate or flange of the manifold is placed behind the moisture barrier sheet. The lower half of the plate or flange is in front of the barrier sheet. The barrier sheet can be trimmed to leave the sleeve open and conform to the outer surface of the sleeve. The plate is then placed tightly against the barrier sheet and can be backed with a caulk or mastic. If an exterior rigid insulation panel is used for the wall construction, the manifold sleeve is made long enough to pass through this insulation panel so that the interior opening of the manifold sleeve forms a passageway from the interior to the exterior of the wall. [0006] The manifold plate is pressed tightly against the exterior of the wall and the sleeve extends completely through the wall. The through opening of the tubular manifold sleeve then provides a passageway for the building service element or member that must pass through the wall. Once the building service element, such as a pipe, cable, duct or the like is in place, the passageway of the manifold sleeve is filled with a sealant, preferably foam. For example, a type of foam that is semi-liquid when put into the passageway and which will expand to fully fill the spaces in the manifold sleeve can be used. The wire, pipe or other wall penetrating service element in encased completely in a waterproof barrier to prevent moisture from passing through the interior of the manifold sleeve. [0007] In one form of the invention, the manifold sleeve extends outwardly beyond the manifold plate or flange, so that it will pass through any exterior insulation panel that may be used in the building construction. [0008] The manifold can be made in many cross section configurations other than circular cylinders. A plurality of sleeves can be mounted on a single plate or flange to provide for a gang of different size manifold sleeves that the electrician, plumber and other service personnel can utilize for passing the building service elements through the wall. [0009] Another aspect of the invention is to provide a manifold for later use, which includes the tubular manifold sleeve and the manifold plate or flange, which would be mounted through the sheathing with the plate sealed with the rubber membrane or windwrap, but with a closed end cone projecting outwardly from the plate. When exterior panels or materials such as a rigid insulation panels are placed against the cone, the cone would compress the insulation but there would be no opening through the exterior wall panel. Subsequently, a drill can be used from the interior of the wall for boring through the cone, to the exterior, and the service elements such as wire, cable, pipes or the like, could then be passed through the interior passageway of the sleeve and through the bored opening through the insulation or exterior panel. After the service elements have been installed through the manifold sleeve, the sleeve would again be filled with foam or other sealant as would any gaps in the opening that had been bored for the service element. [0010] Another use of the present invention is for providing passageways for necessary service elements through interior walls from one apartment or room to another in row house construction. The plate, which forms the flange on the tubular manifold sleeve, gives stability to the manifold sleeve to prevent it from "working" relative to the opening made for the sleeve in the wall structure. A sealant behind the manifold plate or flange secures the flange to the backing wall, and the sleeve will not tend to "work" to deteriorate the seal or wall. [0011] The sleeve also would be foamed closed when used on interior partition walls to prevent moisture, odors air and smoke transfer through the sleeve passageway, and also the foam is a sound deadener to aid in reducing noise transmission, and can be a fire stop. BRIEF DESCRIPTION OF THE DRAWINGS [0012] FIG. 1 is a fragmentary cross sectional view of a typical exterior building wall showing components provided on the exterior of building studs and including a rigid insulation panel on the outside of the exterior wall panel, with a manifold made according to the present invention shown in position; [0013] FIG. 2 is a cross sectional view from an end of the manifold taken generally along line 2-2 in FIG. 1; [0014] FIG. 3 is a sectional view taken along 3-3 in FIG. 2; [0015] FIG. 4 is a view of a cross section of an exterior wall showing conventional construction with an exterior sheathing, and a flexible sheet of windwrap with a manifold made according to the present invention installed therein; [0016] FIG. 5 is schematic sectional view of a modified form of the manifold of the present invention, which includes a solid end cone that will embed into exterior panels or insulation, and is shown being bored out for receiving a building service element; [0017] FIG. 6 is a side view of the manifold of FIG. 5 after passing an electrical wire through the manifold and sealing the manifold; [0018] FIG. 7 is a schematic sectional view of a manifold made according to the present invention with the manifold end cone in place in exterior insulation, prior to having a smaller solid end cone in place after construction, but before boring the cone for receiving a building service element; [0019] FIG. 8 is a perspective view of a manifold made according the present invention showing a number of tubular manifold sleeves mounted on a common flange or plate for installation in a building; [0020] FIG. 9 is a side view of the manifold of FIG. 8; [0021] FIG. 10 is an exterior end view of the multiple manifold of FIG. 7; and Continue reading about Moisture penetration prevention manifold... 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