|Numéro de publication||US20070049190 A1|
|Type de publication||Demande|
|Numéro de demande||US 11/216,936|
|Date de publication||1 mars 2007|
|Date de dépôt||31 août 2005|
|Date de priorité||31 août 2005|
|Numéro de publication||11216936, 216936, US 2007/0049190 A1, US 2007/049190 A1, US 20070049190 A1, US 20070049190A1, US 2007049190 A1, US 2007049190A1, US-A1-20070049190, US-A1-2007049190, US2007/0049190A1, US2007/049190A1, US20070049190 A1, US20070049190A1, US2007049190 A1, US2007049190A1|
|Cessionnaire d'origine||Singh Tyrone R|
|Exporter la citation||BiBTeX, EndNote, RefMan|
|Référencé par (2), Classifications (9)|
|Liens externes: USPTO, Cession USPTO, Espacenet|
The present invention relates to a protective barrier for a roof vent, particularly for an off-ridge roof vent. The barrier may be affixed to existing vents, pre-assembled onto, or integral with vents. The barrier comprises two parallel orifice plates, such as louvered panels, that are spaced apart a desired distance, so as to provide for ventilation and also to restrict pass-through of wind-driven rainwater.
Roof ventilation devices of various designs have been incorporated into roofs and adjacent building structures, such as soffits, to provide for circulation to eliminate undesired heat build-up, such as in an attic. For example, during hot days air may flow through screened openings in soffits, into an attic space, and out of one or more roof ventilation devices. Roof ventilation devices may be powered, such as attic fans, or passive, such as roof vents. Two common classes of roof vents are ridge vents and off-ridge vents. Off-ridge roof vents, which are offset from the ridge of a roof, afford certain advantages as far as ease of installation, low cost and relatively low maintenance.
However, unprotected openings of roof vents may allow undesired entry of water into the house, such as into the attic, during extreme weather conditions. This has been appreciated and addressed in various manners. For example, U.S. Pat. No. 5,921,863, issued Jul. 13, 1999 to Gary L. Sells, discloses an arrangement of an inner and an outer plate to protect a ridge vent. The inner plate has parallel upwardly facing louvers, while the outer plate has an equal number of downwardly facing louvers. During normal wind conditions there are open passages through adjacently positioned louvers of the inner and outer plates, conducive to ventilation. Also, the outer plate is slidably arranged so as to be urged upward a distance due to high wind conditions. In such upward position, there is a closing of the passages between the inner and outer sets of louvers (see
Also, U.S. Pat. No. 5,797,222 to Paul Martin discloses a roof ridge and gable extension ventilation device that comprises a pair of spaced parallel upstanding sidewalls each comprising a plurality of vent openings, with interior return vent walls extending from the sidewalls, and comprising vent openings. The disclosure discloses that the latter vent openings, formed at louvered portions, are positioned above the corresponding louvers of the respective sidewalls. This is stated to be so oriented for assuring that the interior opening through the roof at the roof ridge, termed the roof vent, will stay dry.
Other references disclose various approaches to provide a form of protection for roof vents. These include U.S. Pat. No. 4,280,399, U.S. Pat. No. 4,588,637, U.S. Pat. No. 5,050,489, U.S. Pat. No. 5,535,558, and U.S. Pat. No. 6,554,700. U.S. Pat. No. 6,202,372 discloses a specific approach to an off-ridge roof vent having increased resistance to bending.
In tropical and semi-tropical regions, roof ventilation devices such as off-ridge roof vents are commonly provided to houses and other buildings to deal with high heat during the summers. Generally off-ridge roof vents have an elongated opening of low profile. However, many off-ridge roof vents were designed without full consideration of risks of water entry due to high-force wind, such as during a hurricane. Thus, despite the existence of various approaches to protect the entrances of roof vents, there continues to be a need for a protective barrier for off-ridge roof vents that is effective to reduce or eliminate water ingress during high speed wind and rain events such as hurricanes.
FIGS. 3A-C provide, respectively, front, transverse section, and cross-sectional side views of one embodiment of a first orifice plate component of the present invention.
FIGS. 4A-C provide, respectively, front, top, and cross-sectional side views of one embodiment of a second orifice plate component of the present invention.
The present invention comprises a ventilating moisture barrier for covering an exterior aperture of a roof vent, particularly of a standard-sized off-ridge roof vent. Embodiments include the barrier itself, and a roof vent comprising the barrier (whether as a kit for assembly or integral or pre-assembled as part of the roof vent). The present invention is designed to reduce or eliminate the passage of water, such as water in aerosol droplet form, through a roof vent and into a roof attic space during high-wind events such as hurricanes. This is achieved while retaining the basic capacity of the respective vent to operate to vent hot gases from an attic space during non high-wind conditions.
Embodiments of the ventilating moisture barrier of the present invention comprise three functional components in spaced relationship to one another. These are described below and illustrated by example through reference to the figures appended hereto.
In order to provide for an understanding of aspects of the present invention,
The ventilating moisture barrier 100 of
A second functional component of the ventilating moisture barrier 100 is a second orifice plate 120. The second orifice plate 120 is comprised of a flattened structural body 124 from which extend a second number of interior louvers 126 that, as depicted in
As shown in
A third functional component of the ventilating moisture barrier 100 is a stagnation zone 130 disposed between the first orifice plate 110 and the second orifice plate 120. The stagnation zone 130 has a defined depth, identified in
While not meant to be limiting, the ventilating moisture barrier 100 in
Water still entrained in the now-decreased-velocity wind may alternatively encounter the louvers 126 of the second orifice plate 120, and thereon collect, coalesce, and drop sequentially along such louvers 126 until reaching the roof (not shown). The wind passing through the second orifice plate 120 is expected to experience a further decrease in velocity due to the restricted open area based on the surface area of the flattened structural body 124, followed by a larger volume farther inward. However, while the design is effective to reduce the inflow of wind-driven rainwater, particularly during high wind conditions such as during a tropical storm or hurricane, the respective open areas of openings (represented by exterior passages 116 and interior passages 128 in
Other aspects of the juxtaposition of the louvers and the passages of the first and the second orifice plates are relevant to various embodiments of the invention. First, for various embodiments at least one of the interior louvers is aligned laterally with one of the exterior louvers. By “aligned laterally” is meant that at least one interior louver is positioned vertically within the range of elevations defined between the highest and the lowest of the exterior louvers. In various embodiments, at least half of the interior louvers are aligned laterally with exterior louvers. This provides for efficient airflow under low velocity conditions, such as during normal (non-storm wind speed) ventilation conditions. Further, it is appreciated that for the embodiment depicted in
Similarly, it is appreciated that for various embodiments at least one of the interior passages is aligned laterally with one of the exterior passages. By this is meant that, when a barrier of the present invention is at the installed angle, extending a horizontal line from the lowest point of the lowest exterior passage and from the highest point of the highest exterior passage inward to the interior passages, at least one interior passage is between such lines. Also, it is appreciated that the term “passages” in this paragraph may refer to any opening suitable for passage of air through the respective orifice plate, whether or not a louver is associated with it.
It also is appreciated that for various embodiments the first and the second orifice plates, although spaced apart by the stagnation zone, are substantially parallel to one another rather than disposed angularly. By substantially parallel is meant that there is no more than about a 15 degree angle of inclination of one such plate toward or away from the other.
Embodiments of the present invention may be formed from materials such as plastics, such as by injection molding, and metals, such as by various methods of fabrication as known in the art, including but not limited to form rolling and stamping. With regard to plastics types, ABS, polypropylene, and polypropylene with talc as a filler, may be utilized, as well as any other type of thermoplastic known to those skilled in the art. Generally and as desired based on design criteria, weepage openings may be included on downwardly facing bottom portions or edges to permit any collected liquids to drain therethrough. Also, struts, ribs, and other supports, and tabs through which fastening means (nails, screws, rivets, etc.) may be used for affixing the barrier to the vent or roof, may be incorporated in various embodiments although not depicted explicitly in the figures.
One approach to fabrication and assembly is exemplified in FIGS. 3A-C, 4A-C, and 5A. These are not meant to be limiting.
FIGS. 3A-C provide, respectively, front, transverse section, and cross-sectional side views of one embodiment of a first orifice plate panel 300 of the present invention, for assembly with a second orifice plate panel 400 as depicted in FIGS. 4A-C. Viewable in
FIGS. 4A-C provide, respectively, front, top, and cross-sectional side views of one embodiment of a second orifice plate panel 400 of the present invention, for assembly with the first orifice plate panel 300 as depicted in FIGS. 3A-C. The structural and functional components of the second orifice plate panel 400 have similarities to those of the first orifice plate panel 300 of
The first orifice plate panel 300 and the second orifice plate panel 400 of Example 1 fit together to form a unit 500 of a ventilating moisture barrier of the present invention. A cross-section of one such unit 500 is shown in
Two such units 500 are shown side-by-side in
Table 1 summarizes dimensions of the combined, side-by-side use of two units 500 to cover an aperture of a standard off-ridge roof vent having a width of about 46.5 inches. These dimensions are meant to be illustrative but not limiting.
TABLE 1 Distance a 46.3 inches Distance b 23.3 inches Distance c 4.925 inches Distance d 4.419 inches Angle e 45 degrees
Although the aperture of most off-ridge roof vents has a width of about 46.5 inches, such width is not meant to be limiting. Accordingly, it is appreciated that a unit of a ventilating moisture barrier of the present invention may be made to have a particular width that is a fraction of a desired aperture width. Then a desired number of such units may be used to cover any of a number of roof vents having widths that are multiples of such particular width.
Also, it is appreciated that various other forms of construction, including fabricating an integral structure comprising the first exterior and the second interior orifice plates, may be done and would be within the scope of the present invention.
It is appreciated that the angling of the louvers need not be as shown in
While the above embodiments and disclosure are directed to a protective moisture barrier for an off-ridge roof vent, it is appreciated that the present invention also may be utilized for other types of roof vents. For example, not to be limiting, the present invention may be employed to cover the outer apertures of ridge roof vents.
In summary, through disclosure of the aspects of embodiments of the present invention, it is apparent that the present invention provides for high levels of ventilating airflow during normal conditions of operation of a roof vent, so as to not impair ventilation efficiency. Additionally, the present invention provides for reduction of passage of wind-driven rainwater during high wind conditions such as are associated with tropical storms and hurricanes. Consequently, the present invention advances the art of ventilating moisture barrier protective covering devices for roof vents, particularly for off-ridge roof vents.
Embodiments of the present invention may be in any of the following forms: a ventilating moisture barrier, as a single unit or two or more units that together cover an exterior aperture of an existing roof vent; and a roof vent in combination with a ventilating moisture barrier, whether these are integrally formed, pre-assembled, or assembled during the installation process of the vent. Kits may also be provided comprising the components of an embodiment of a ventilating moisture barrier of the present invention, and also including screws or the like for assembly and installation, and instructions for assembly and installation. Additional components may be supplied to provide for installation on a variety of roof vent openings. More generally, assembly of an embodiment of a ventilating moisture barrier, or installation of the same to cover a roof vent exterior aperture, may be done using any means for attachment known to those skilled in the art, which may include: thermoplastic welding; sonic welding; welding; gluing or other adhesion by an adhesive, such as but not limited to caulk; screws; nails; rivets; staples; magnets; hooks; clamps; lugs; pins; or other mechanical linking or couplings, any type of fastener, any type of connector, or any other suitable conventional attachment mechanism, system or device. Surfaces of the embodiments of the present invention may provide for, or may comprise, holes or slots, that provide for attachment by such means for attachment.
All patents, patent applications, patent publications, and other publications referenced herein are hereby incorporated by reference in this application in order to more fully describe the state of the art to which the present invention pertains, to provide such teachings as are generally known to those skilled in the art, and, with regard to standard features and/or components common to embodiments of those references and the present disclosure, to provide teachings specific to embodiments of the present invention that utilize combinations of features that include one or more such features and/or such components described in the referenced patent applications.
While certain embodiments of the present invention have been shown and described herein in the present context, such embodiments are provided by way of example only, and not of limitation. Numerous variations, changes and substitutions will occur to those skilled in the art without departing from the invention herein. For example, the present invention need not be limited to best mode disclosed herein, since other applications can equally benefit from the teachings of the present invention. Accordingly, it is intended that the invention be limited only by the spirit and scope of the appended claims.
|Brevet citant||Date de dépôt||Date de publication||Déposant||Titre|
|US8292707 *||21 nov. 2007||23 oct. 2012||Air Vent, Inc.||Off-peak air intake vent|
|US8528269 *||19 août 2008||10 sept. 2013||Building Materials Investment Corporation||Fascia vent|
|Classification aux États-Unis||454/365|
|Classification internationale||F24F13/08, F24F7/02|
|Classification coopérative||E04D13/17, F24F13/082, F24F7/02|
|Classification européenne||E04D13/17, F24F7/02, F24F13/08C|