Roof vent having labyrinth features
A roof vent construction which is comprised of an assembly including a cowl, a base, and a cowl retaining member. These elements provide a structure which provides cover for rain and discourages rain from entering the vent underneath the cowl, but nevertheless allows for suitable ventilation as needed. In one embodiment a configuration is used in which an external baffle is used which air passes before passing underneath a cowl. Once the air is passed underneath the cowl, the air then passes over one and one configuration two internal baffles before the air passes out of a pair of vent cavities defined by the base. In a second configuration, a cowl extends substantially to the leading edge of the construction. Air flows underneath the leading edge of the cowl and then passes over a large internal baffle, over a first small internal baffle, and finally over a second small internal baffle before passing through the vent cavities and out of the structure. Another invention relates to the use of two surface portions on the vent assembly, one surface portion configured to match a first course of tiles and the other surface portion configured to match a second course of tiles adjacent to said first course of tiles.
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This application claims the full benefit and priority of pending provisional application No. 60/491,405, filed, Jul. 31, 2003, entitled “Roof Vent Having Labyrinth Features”. The entire contents of this provisional application are likewise incorporated by reference.
BACKGROUND OF THE INVENTIONIn the construction of roofing, it is known to provide roofs made of individual roofing elements. The elements can be flexible, such as asphalt shingles, or rigid, such as clay or concrete tiles.
It is also known to provide vents in the roofing structure to provide roof ventilation. However, providing such venting can introduce problems relating to the prevention of water being drawn in along with the ventilating air flow. Therefore there is a need in the art to provide an improvement of such vents.
BRIEF SUMMARY OF THE INVENTIONThe present invention provides in improvement of over the art by providing an improved roof vent that includes improved ventilation features as well as improved aesthetic features.
Generally described, the present invention is directed towards a roof vent assembly for use in connection with an inclined roof structure including a plurality of tile members supported by a roofing support structure, the vent assembly configured to provide ventilation to the roof structure and comprising a base member configured to be attached to and supported by the roofing support structure, the base member including a ventilation hole and at least one rib below the ventilation hole, and a cowl member including a leading edge, the cowl member configured to be mounted above the ventilation hole of the base member, the cowl member also configured to cover the rib, such that a portion of air blowing up the incline of the roof structure has to pass along a labyrinth air flow path, the air flow path passing first underneath the leading edge of the cowl member and then over the rib, and finally through the ventilation hole.
The present invention is also directed towards a roof vent assembly for use in connection with an inclined roof structure including a plurality of tile members supported by a roofing support structure, the vent assembly configured to provide ventilation to the roof structure and comprising a base member configured to be attached to and supported by the roofing support structure, the base member including a ventilation hole and also including a front external baffle positioned proximate its front edge, and a cowl member including a leading edge, the cowl member configured to be mounted above the ventilation hole of the base member while leaving the front external baffle of the base member exposed, the leading edge being positioned behind the external baffle, such that a portion of air blowing up the incline of the roof structure has to pass along a labyrinth air flow path, the air flow path passing first over the front external baffle of the base member, underneath the leading edge of the cowl member, and finally through the ventilation hole.
The present invention is also directed towards roof vent assembly for positioning within a first generally horizontal course of roof tiles, the first course of tiles being adjacent to and below a second generally horizontal course of roof tiles, the vent assembly comprising A) a base defining at least one upwardly-directed surface portion and a vent portion, the surface portion of the base tending to blend in with at least some of the upper surfaces of the first course of tiles, and B) a cowl attached to and suspended above the vent portion of the base, the cowl defining at least one surface portion tending to blend in with the second course of tiles.
The present invention is also directed towards a roof vent assembly for positioning within a first generally horizontal course of roof tiles, the first course of tiles being adjacent to and below a second generally horizontal course of roof tiles, the vent assembly comprising A) a base defining at least one upwardly-directed surface portion and a vent portion, the surface portion of the base configured to substantially match at least some of the upper surfaces of the first course of tiles, and B) a cowl attached to and suspended above the vent portion of the base, the cowl defining at least one surface portion configured to substantially match at least some of the upper surfaces of the second course of tiles.
The present invention is also directed towards a method for providing a roof vent assembly positioned within a first generally horizontal course of roof tiles, the first course of tiles being adjacent to and below a second generally horizontal course of roof tiles, the method comprising the steps of A) providing a base defining at least one upwardly-directed surface portion and a vent portion, the surface portion of the base configured to blend in with at least some of the upper surfaces of the first course of tiles, and B) providing a cowl attached to and suspended above the vent portion of the base, the cowl defining at least one surface portion configured to blend in with at least some of the upper surfaces of the second course of tiles.
The present invention is also directed towards a method for providing a roof vent assembly positioned within a first generally horizontal course of roof tiles, the first course of tiles being adjacent to and below a second generally horizontal course of roof tiles, the method comprising the steps of A) providing a base defining at least one upwardly-directed surface portion and a vent portion, the surface portion of the base configured to substantially match at least some of the upper surfaces of the first course of tiles, and B) providing a cowl attached to and suspended above the vent portion of the base, the cowl defining at least one surface portion configured to substantially match at least some of the upper surfaces of the second course of tiles.
Therefore, it is an object of the present invention to provide an improved roof structure.
It is a further object of the present invention to provide an improved roof structure, which includes at least one roof vent.
It is a further object of the present invention to provide an improved roof vent.
It is a further object of the present invention to provide an improved roof vent that includes improved rain exclusion features.
It is a further object of the present invention to provide an improved roof vent that includes improved wind exclusion features.
It is a further object of the present invention to provide an improved roof vent that includes improved aesthetic features.
It is a further object of the present invention to provide an improved roof vent that includes improved aesthetic features while at the same time including improved functional features.
It is a further object of the present invention to provide an improved roof vent that is economical to manufacture while still providing improved functional and aesthetic features.
It is a further object of the present invention to provide an improved roof vent that is economical to sell while still including improved functional and aesthetic features.
Other objects, features, and advantages of the present invention will become apparent upon reading the following detailed description of the preferred embodiment of the invention when taken in conjunction with the drawing and the appended claims.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGSHaving thus described the invention in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
It may also be understood that this same type of dual level matching applies to the other vent configurations. Although having a curved upper surface, the upper surface of the cowls of the assemblies 510, 710, likewise tend to blend in with the upper, curved, surfaces of the tiles in the next course above, while the curved upper major surfaces of the bases of these assemblies blend in with the tiles in their same course.
DETAILED DESCRIPTION OF THE INVENTIONThe present inventions now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown in the figures. Indeed, these inventions may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like numbers refer to like elements throughout.
General Construction and Operation
Generally described, the vent assemblies described herein include a base, which is attached relative to the supporting roof structure, and a cowl, which is attached to the base and covers a ventilation hole in the base.
In roof vents, the inventor has noted that in certain instances it is desirable to bring the leading edge of the vent cowl in line with the leading edge of adjacent field tiles. In so doing, a constant shadow line is created on the roof, improving aesthetic integration. However, this has been a challenge to the inventors because of the conflicting functional need to prevent wind driven rain entry through the vent.
One particular concept according to one aspect of the present invention is to use internal labyrinths to afford this rain protection. This provides an improvement over the prior art by allowing the cap (a.k.a. cowl) to come to the leading edge of the vent, in-line with the leading edge of adjacent roof tiles. This enables a more aesthetic, integrated appearance on the roof.
Another concept according to the present invention is the use of a front, external, baffle in front of the leading edge of the vent cowl.
Another concept according to the present invention relates to the provision of two different “levels” in the vent assembly, each of which matches the contour of a different course of tiles amongst which the vent is mounted. Said another way, the invention includes the generic concept of matching tile profiles with vent profiles.
Detailed Discussion
More detailed discussion is now made of the various embodiments of the vent assemblies of the present invention. By way of reference, it should be noted that the term “leading” edge is meant to indicate the edge of the tile or tile vent that faces “down” the roof towards the ground. This could also be termed the “lower” or “foot” edge. Conversely, a “trailing” edge is meant to indicate the edge of the tile that faces “up” the roof, away from the ground. This could also be termed the “upper” or “head” edge. “Side” edges are the remaining edges that connect the two.
There are three general types of vent assemblies that are used under the present invention: a flat vent assembly, a “dual hump” vent assembly, and a “triple hump” vent assembly. These assemblies are configured to be used with tiles that have the same general shape; such tiles will be recognized by one skilled in the art. However it should be understood that the present inventions described herein could be used with other shapes of tiles. Furthermore, a concept shown in association with one vent assembly (e.g., a flat vent assembly) could be used with another vent assembly (e.g., a dual hump vent assembly).
The Flat Vent (
Reference is first made to
A cowl retention member (not shown in
Referring now also to
The cowl 20 is attached to the base 30 of the vent assembly 10 by use of a vent retention member discussed below, and covers the vent holes 32 (a.k.a. vent “cavities”) in the base 30, and also covers the first and second internal baffles 35, 36, and discussed in later detail. However, the baffle 34 could be considered to be in “front” of the front edge of the cowl 20, and the cowl 20 “behind” the baffle 34.
It may be seen that the cowl 20 of
Although this view shown in
As noted elsewhere in this application, when the flat vent assembly 10 is assembled and is in its upright position as shown in
When wind, combined with rainwater, blows “up” the roof, it will tend to blow along a serpentine path, first over the external baffle 34, and then immediately dip down and under the leading edge of the cowl 20. At this point, the air will then have to go up over the first internal baffle 35, down into a trough, which is in between baffles 35, and 36, and then up over the second internal baffle 36. Air crossing the crest of the second internal baffle 36 is then free to continue under the cowl 20 and out downwardly through the two vent cavities (or cavity) 32 in the floor plate 31.
It may be understood that sloping ramps 37 exist on the opposing ends of the first and second internal baffles. These sloping ramps 37 provide for escaping waterflow from water that may be deposited when crossing the external baffle 34 or the first internal baffle 35.
The base 230 includes a floor plate 231 (which defines a lower major planar portion), a raised shelf 233 (which defines an upper major planar portion), and a front external baffle 234. The base also includes nailing locations 239 to receive nails for fastening the base to a supporting roof structure.
The cowl 220 includes downwardly oriented standoff feet 225 which bias on the top surface of the floor plate 231.
Also shown in
This engagement is done by engagement between the barb 245 and a hole 226H in the end of the tab 226, shown in
The Two Humped Vent (
The Three Humped Vent (Villa) (
It should be understood that the front external baffle could also be configured so as to have a substantially straight upper edge, such that the thickness of the baffle would vary depending on from where the wall was extending. For example, the wall would be at its thickest when extending upwardly from the flat segments 736.
The Cowl Fastening System
As noted above, under one embodiment of the invention, the cowl fastening system described below that includes a cowl retention member 240, as shown in
As noted above, referring generally to
When the cowl retention member 240 is installed, the standoff feet 225 have their bottom tips contacting and biasing atop (but not engaging) the floor surface 231 (a.k.a. the lower major surface) of the base 230, at locations spaced around the opening in the base. The engaging tabs 226 extend down and through the vent opening 232 of the base, and engage corresponding engagement portions 242 of the cowl retention member 240.
The cowl retention member 240 has an outer perimeter, which has a quasi-pentagon shape that allows the cowl retention member 240 to fit into, and “nest” within the pentagon-shaped opening of the base. The engaging tabs 226 of the cowl snap-fit into engagement portions 242 of the cowl retention member 240, such that the cowl retention member 240 and the feet 225 of the base 230 capture the base therebetween. The engaging tabs do not touch the base, only the cowl retention member 240. The cowl retention member also includes ribs 247 which span the opening; these ribs are for are these for structural integrity.
Alternatives and Accessories
Although the above configurations contemplate the use of a cowl retention member, other configurations may be used to fasten the cowl to the base without departing from the spirit and scope of the present invention. For example, L-shaped bracket-type hardware elements (not shown) may be attached to the base and the cowl, and flexible members may be used to connect the hardware together and to provide a flexible but spaced-apart connection between the cowl and the base. In such a configuration no cowl retention member would be used.
The vent assemblies described above can also be used in conjunction with a flat screen provided underneath the vent hole in the base of the vent assembly. A “cloaking device” (not shown) could also be used which acts like a flashing and screen. Essentially, the cloaking device includes a base defining an opening, flashing extending about the periphery of the opening, and a screen at the top of the flashing. The flashing component, which operates similar to that currently in the art, sheds water away from the hole and the screen prevents bugs and rodents from crawling into the attic space.
The cloaking device is nailed to the roof deck over the hole to allow the air into the attic space. The underlayment will overlap the top of the base of the cloaking device so water runs off the underlayment onto the cloaking device, is stopped by the raised wall and runs off the sides back onto the underlayment.
It may be noted that the “labyrinth” feature noted elsewhere in this application may be used in combination with the “dual-level matching” feature, or either feature may be used alone.
It should be understood that although certain combinations of internal and external baffles have been shown for purposes of indication, it should be understood that there are other alternative configurations that still manage to be covered by the present invention. For example, instead of using two small internal baffles, three or one internal baffles could be used; in fact, any reasonable number of internal baffles could be used within engineering limitations. At the same time, a large external baffle could be used as shown in the first embodiment, with the large external baffle having various height possibilities, depending on the severity of the weather of the application. Furthermore, the embodiments shown above discuss baffles with a vertical orientation. It should be noted that this is just one embodiment and in fact a horizontal labyrinth is also envisioned for the same purpose. Furthermore it could also be said that air passes “through” the labyrinth as opposed to “over” the labyrinth in such situations.
The Dual-Level Matching Concept
It may also be understood that this same type of dual level matching applies to the other vent configurations. Although having a curved upper surface, the upper surface of the cowls of the assemblies 510, 710, likewise tend to blend in with, match, and simulate the upper, curved, surfaces of the tiles in the next course above, while the curved upper major surfaces of the bases of these assemblies blend in with, match, and simulate the tiles in their same course.
Conclusion
Many modifications and other embodiments of the inventions set forth herein will come to mind to one skilled in the art to which these inventions pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the inventions are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims
1. A roof vent assembly for use in connection with an inclined roof structure including a plurality of tile members supported by a roofing support structure, said vent assembly configured to provide ventilation to said roof structure and comprising:
- a base member configured to be attached to and supported by said roofing support structure, said base member including a ventilation hole and at least one rib below said ventilation hole; and
- a cowl member including a leading edge, said cowl member configured to be mounted above said ventilation hole of said base member, said cowl member also configured to cover said rib,
- such that a portion of air blowing up the incline of the roof structure has to pass along a labyrinth air flow path, said air flow path passing first underneath said leading edge of said cowl member and then over said rib, and finally through said ventilation hole.
2. A vent assembly for use in connection with an inclined roof structure as claimed in claim 1, wherein said attachment of said base to said supporting roof structure is via nails.
3. A vent assembly for use in connection with an inclined roof structure as claimed in claim 1, wherein said base further comprises an external baffle at the foot edge of the base, such that air first goes over the large external baffle and then underneath the cowl.
4. A vent assembly for use in connection with an inclined roof structure as claimed in claim 1, wherein said vent assembly includes a combination of base and cowl that generally simulates a flat tile structure.
5. A vent assembly for use in connection with an inclined roof structure as claimed in claim 1, wherein said vent assembly includes a combination of base and cowl that generally simulates a “humped” tile structure.
6. A vent assembly for use in connection with an inclined roof structure as claimed in claim 1, wherein said vent assembly includes a combination of base and cowl that generally simulates a “two humped” tile structure.
7. A vent assembly for use in connection with an inclined roof structure as claimed in claim 1, wherein said vent assembly includes a combination of base and cowl that generally simulates a “three humped” tile structure.
8. A roof vent assembly for use in connection with an inclined roof structure including a plurality of tile members supported by a roofing support structure, said vent assembly configured to provide ventilation to said roof structure and comprising:
- a base member configured to be attached to and supported by said roofing support structure, said base member including a ventilation hole and also including a front external baffle positioned proximate its front edge; and
- a cowl member including a leading edge, said cowl member configured to be mounted above said ventilation hole of said base member while leaving said front external baffle of said base member exposed, said leading edge being positioned behind said external baffle,
- such that a portion of air blowing up the incline of the roof structure has to pass along a labyrinth air flow path, said air flow path passing first over said front external baffle of said base member, underneath said leading edge of said cowl member, and finally through said ventilation hole.
9. A vent assembly for use in connection with an inclined roof structure as claimed in claim 8, wherein said vent assembly includes a combination of base and cowl that generally simulates a flat tile structure.
10. A vent assembly for use in connection with an inclined roof structure as claimed in claim 8, wherein said vent assembly includes a combination of base and cowl that generally simulates a “humped” tile structure.
11. A vent assembly for use in connection with an inclined roof structure as claimed in claim 8, wherein said vent assembly includes a combination of base and cowl that generally simulates a “two humped” tile structure.
12. A vent assembly for use in connection with an inclined roof structure as claimed in claim 8, wherein said vent assembly includes a combination of base and cowl that generally simulates a “three humped” tile structure.
13. A roof vent assembly for positioning within a first generally horizontal course of roof tiles, said first course of tiles being adjacent to and below a second generally horizontal course of roof tiles, said vent assembly comprising:
- A) a base defining at least one upwardly-directed surface portion and a vent portion, said surface portion of said base tending to blend in with at least some of the upper surfaces of said first course of tiles; and
- B) a cowl attached to and suspended above said vent portion of said base, said cowl defining at least one surface portion tending to blend in with said second course of tiles.
14. A vent assembly for use in connection with an inclined roof structure as claimed in claim 13, wherein said vent assembly includes a combination of base and cowl that generally simulates a flat tile structure.
15. A vent assembly for use in connection with an inclined roof structure as claimed in claim 13, wherein said vent assembly includes a combination of base and cowl that generally simulates a “humped” tile structure.
16. A vent assembly for use in connection with an inclined roof structure as claimed in claim 13, wherein said vent assembly includes a combination of base and cowl that generally simulates a “two humped” tile structure.
17. A vent assembly for use in connection with an inclined roof structure as claimed in claim 13, wherein said vent assembly includes a combination of base and cowl that generally simulates a “three humped” tile structure.
18. A roof vent assembly for positioning within a first generally horizontal course of roof tiles, said first course of tiles being adjacent to and below a second generally horizontal course of roof tiles, said vent assembly comprising:
- A) a base defining at least one upwardly-directed surface portion and a vent portion, said surface portion of said base configured to substantially match at least some of the upper surfaces of said first course of tiles; and
- B) a cowl attached to and suspended above said vent portion of said base, said cowl defining at least one surface portion configured to substantially match at least some of the upper surfaces of said second course of tiles.
19. A vent assembly for use in connection with an inclined roof structure as claimed in claim 18, wherein said vent assembly includes a combination of base and cowl that generally simulates a flat tile structure.
20. A vent assembly for use in connection with an inclined roof structure as claimed in claim 18, wherein said vent assembly includes a combination of base and cowl that generally simulates a “humped” tile structure.
21. A vent assembly for use in connection with an inclined roof structure as claimed in claim 18, wherein said vent assembly includes a combination of base and cowl that generally simulates a “two humped” tile structure.
22. A vent assembly for use in connection with an inclined roof structure as claimed in claim 18, wherein said vent assembly includes a combination of base and cowl that generally simulates a “three humped” tile structure.
23. A method for providing a roof vent assembly positioned within a first generally horizontal course of roof tiles, said first course of tiles being adjacent to and below a second generally horizontal course of roof tiles, said method comprising the steps of:
- A) providing a base defining at least one upwardly-directed surface portion and a vent portion, said surface portion of said base configured to blend in with at least some of the upper surfaces of said first course of tiles; and
- B) providing a cowl attached to and suspended above said vent portion of said base, said cowl defining at least one surface portion configured to blend in with at least some of the upper surfaces of said second course of tiles.
24. A method for providing a roof vent assembly for use in connection with an inclined roof structure as claimed in claim 23, wherein said vent assembly includes a combination of base and cowl that generally simulates a flat tile structure.
25. A method for providing a roof vent assembly for use in connection with an inclined roof structure as claimed in claim 23, wherein said vent assembly includes a combination of base and cowl that generally simulates a “humped” tile structure.
26. A method for providing a roof vent assembly for use in connection with an inclined roof structure as claimed in claim 23, wherein said vent assembly includes a combination of base and cowl that generally simulates a “two humped” tile structure.
27. A method for providing a roof vent assembly for use in connection with an inclined roof structure as claimed in claim 23, wherein said vent assembly includes a combination of base and cowl that generally simulates a “three humped” tile structure.
28. A method for providing a roof vent assembly positioned within a first generally horizontal course of roof tiles, said first course of tiles being adjacent to and below a second generally horizontal course of roof tiles, said method comprising the steps of:
- A) providing a base defining at least one upwardly-directed surface portion and a vent portion, said surface portion of said base configured to substantially match at least some of the upper surfaces of said first course of tiles; and
- B) providing a cowl attached to and suspended above said vent portion of said base, said cowl defining at least one surface portion configured to substantially match at least some of the upper surfaces of said second course of tiles.
29. A method for providing a roof vent assembly for use in connection with an inclined roof structure as claimed in claim 28, wherein said vent assembly includes a combination of base and cowl that generally simulates a flat tile structure.
30. A method for providing a roof vent assembly for use in connection with an inclined roof structure as claimed in claim 28, wherein said vent assembly includes a combination of base and cowl that generally simulates a “humped” tile structure.
31. A method for providing a roof vent assembly for use in connection with an inclined roof structure as claimed in claim 28, wherein said vent assembly includes a combination of base and cowl that generally simulates a “two humped” tile structure.
32. A method for providing a roof vent assembly for use in connection with an inclined roof structure as claimed in claim 28, wherein said vent assembly includes a combination of base and cowl that generally simulates a “three humped” tile structure.
Type: Application
Filed: Jul 30, 2004
Publication Date: Jun 16, 2005
Applicant:
Inventor: Christopher Dodge (Trabuco Canyon, CA)
Application Number: 10/903,567