US20040198216A1 - Precipitation resistant ridge vent - Google Patents
Precipitation resistant ridge vent Download PDFInfo
- Publication number
- US20040198216A1 US20040198216A1 US10/826,651 US82665104A US2004198216A1 US 20040198216 A1 US20040198216 A1 US 20040198216A1 US 82665104 A US82665104 A US 82665104A US 2004198216 A1 US2004198216 A1 US 2004198216A1
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- US
- United States
- Prior art keywords
- vent
- top panel
- air passages
- outer plies
- ply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000001556 precipitation Methods 0.000 title abstract description 16
- 239000000463 material Substances 0.000 claims description 62
- 238000001914 filtration Methods 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 28
- 239000012530 fluid Substances 0.000 claims 4
- 238000013022 venting Methods 0.000 claims 2
- 239000002982 water resistant material Substances 0.000 abstract 2
- 230000004888 barrier function Effects 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 28
- 238000010276 construction Methods 0.000 description 8
- 239000006260 foam Substances 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229920000114 Corrugated plastic Polymers 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 241000238631 Hexapoda Species 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 206010061217 Infestation Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/17—Ventilation of roof coverings not otherwise provided for
- E04D13/174—Ventilation of roof coverings not otherwise provided for on the ridge of the roof
- E04D13/176—Ventilation of roof coverings not otherwise provided for on the ridge of the roof formed by flexible material suitable to be rolled up
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49616—Structural member making
- Y10T29/49623—Static structure, e.g., a building component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Definitions
- the present invention relates to roof ventilators folded from a blank of corrugated plastic sheet material having a top panel and two vent panels. More particularly, it relates to a roof vent of corrugated construction including an internal filtering material to exclude precipitation, debris and vermin from entry into the vented roof.
- Ventilation apertures are formed in the construction process by leaving or cutting an open slot along the ridge through the sheathing material covering the roof. Heated air rises and escapes at the ridge taking with it moisture that may have accumulated within the roof. The flow of wind over the ridge of the roof assists in the extraction of moisture and heated air by creating a zone of relatively reduce pressure as it crosses the ridge. Soffit vents enable the entry of fresh exterior air into the roof to replace air that has left through the ridge vent. Soffit vents are openings in the soffit material covering the undersides of the overhanging eaves of the roof.
- a ventilated roof provides for an unrestricted outflow of air through the ridge vent and inflow through the soffit vents.
- a ventilated cap is therefore placed over the open slot in the ridge and attached to the roof along each side.
- vent caps have been developed in an effort to provide free flow of air while excluding rain, snow and insects. Louvers, baffles and screens have been standard features of roof vents for decades.
- Snow in particular, is a great concern. It has a small particle size and is lightweight. Wind can carry snow upward and into roof vents readily. Snow particles may bypass louvers and deflectors that prevent the entry of most rain. As much as two feet of wind driven snow has been reported to have passed through roof vents and accumulated inside roof structures.
- a number of ridge vent caps employ filtering material to restrict the entry of precipitation and foreign matter.
- Filtering materials include porous foams and fibrous materials. Examples of the use of porous foams include U.S. Pat. No. 5,830,059 issued to Sells, U.S. Pat. No. 5,673,521 issued to Coulton et al. and U.S. Pat. No. 4,876,950 issued to Rudeen. Both closed cell foams and open cell foams have been utilized. Open cell foams have the benefit of allowing greater airflow but tend to absorb a substantial amount of water. Closed cell foams absorb little water but restrict airflow to a greater degree. Foam products, in general, tend to deteriorate with age and exposure to the elements.
- Fibrous materials enjoy wider use as roof vent filters. Examples include U.S. Pat. No. 5,902,432 issued to Coulton et al., U.S. Pat. No. 5,830,059 issued to Sells, U.S. Pat. No. 5,561,953, 5,425,672, 5,352,154, 5,167,579 all issued to Rotter. These patents and others disclose the use of mats of randomly aligned synthetic fibers to exclude vermin and the elements from roof vents. The Rotter patents disclose roof vents made entirely from mats of randomly aligned synthetic fibers. Fiber mats may suffer from compression, for example, under a snow load, and add expense and complexity to the construction of roof vents.
- Examples of corrugated plastic ridge vents include U.S. Pat. No. 5,651,734 issued to Morris, U.S. Pat. No. 5,934,995 to Morris, Kasner and Stoll and U.S. Pat. No. 5,947,817 to Morris, Gosz and Stoll which are incorporated herein in their entirety by reference.
- Wind deflectors are sometimes installed along with the vent in order to restrict the entry of rain and snow into the vent.
- the installation of wind deflectors requires an additional step in the installation process with an attendant increase in time and expense.
- ridge vent of folded corrugated plastic construction that effectively excludes wind blown precipitation and other foreign matter.
- the process of manufacturing the ridge vent should be as simple as possible. It would be preferable for such a ridge vent to require no flashing to support the filtering material.
- the ridge vent would ideally be possible to produce either in a continuous roll or in discrete sections. It would be preferable that filtering material be protected from exposure to the elements to maximize its life.
- the present invention largely solves the above problems by providing a shingle over ridge vent that effectively excludes the entry of precipitation and foreign matter into the roof space.
- the ridge vent is sturdy, easily manufactured and readily installed.
- the filtering material that excludes precipitation is protected from factors that speed its deterioration.
- the ridge vent is constructed of corrugated weather resistant material having a convoluted intermediate ply. Airflow passages in the convoluted layer are linearly oriented generally perpendicular to the long axis of the ridge vent.
- the material is cut and scored so that it may be folded to have a single top panel extending its entire length. At either side of and below the top panel a plurality of folds create a plurality of stacked layers of the corrugated material with a plurality of airflow passages therethrough.
- a routed groove may extend the length of the bottom side of the top panel of the ridge vent to facilitate bending the ridge vent to conform to different roof pitches and to provide an additional exit path for air flowing out of the ridge vent.
- a sheet of air permeable, water resistant, woven or nonwoven fabric or other membrane is applied to the bottom side of the vent.
- the filtering fabric is bonded to the corrugated material in the vicinity of the peak of the vent and on the bottom sides of the stacked, corrugated vent material.
- the filtering fabric forms a tent like structure such that any accumulated rainwater drains out through the bottommost layer of the stacked side vent portions of the ridge vent.
- the enclosure of the filtering fabric inside the ridge vent protects the fabric from exposure to sunlight and other factors that encourage deterioration.
- the ridge vent may be produced in lengthy continuous rolls or discrete sections for installation. Discrete sections of ridge vent may be stacked flat or folded then stacked for shipping and handling. Multiple sections may be butted together end to end to cover a lengthy ridge application.
- the vent material is unrolled or unfolded and disposed along the roof ridge so as to straddle the precut slot in the roof sheathing.
- the ridge vent may then be secured to the roof ridge with fasteners such as nails. It may be caulked as necessary.
- An individual skilled in the art will appreciate that if a roof is substantially irregular such as a corrugated metal roof or a tiled roof that a resilient conforming material may be placed beneath the ridge vent to provide a tight seal between the ridge vent and the roof. An end plug of resilient foam or other appropriate material may be inserted and secured in the end of the roof vent to close off the opening there.
- the ridge vent then may be covered with shingles nailed directly through the ridge vent into the roof sheathing.
- FIG. 1 is a fragmentary elevated perspective view of a ridge vent in accordance with the present invention being installed on a roof;
- FIG. 2 is a side plan view of a three ply weatherproof material that may be used in the construction of the present invention
- FIG. 3 is a side plan view of two layers of a three ply weatherproof material that may be used in the construction of the present invention
- FIG. 4 is a side plan view of two layers of an alternate three ply weatherproof material that may be used in the construction of the present invention
- FIG. 5 is an end plan view of the ridge vent of FIG. 1 depicting a folding scheme for the hinge panels forming the lateral vents of the present invention
- FIG. 6 is an end plan view of an embodiment of the present invention as stored and shipped in a flat configuration
- FIG. 6 a is an end plan view of an alternate embodiment of the present invention as stored and shipped in a flat configuration
- FIG. 6 b is an end plan view of another alternate embodiment of the present invention as stored and shipped in a flat configuration
- FIG. 7 is an end sectional view an embodiment of the ridge vent installed on a roof ridge
- FIG. 7 a is an end sectional view an alternate embodiment of the ridge vent installed on a roof ridge
- FIG. 8 is an end sectional view of an alternate embodiment of the present invention as installed on a shed roof abutting a vertical exterior wall.
- FIG. 1 depicts the precipitation resistant ridge cap roof vent 10 being installed on a roof 12 .
- the roof depicted is a rafter roof, though the ridge vent 10 may be installed on many other types of roofs to provide ventilation.
- the roof 12 depicted includes rafters 14 secured to a ridge board 16 .
- Rafters 14 support sheathing 18 .
- Sheathing 18 may be of plywood, oriented strand board, planks or other suitable material secured to rafters 14 .
- Generally sheathing 18 is overlaid with tarred felt paper 20 which is in turn overlaid with shingles 22 , though other roofing materials may be employed.
- a cutout slot 24 is provided along the ridge 26 . Slot 24 may terminate some distance from the end 28 of the ridge 26 .
- the ridge vent 10 broadly includes a top panel 30 , a plurality of vent panels 32 and filtering fabric 34 .
- Top panel 30 presents a long axis 36 aligned generally parallel with the ridge 26 of the roof 12 when ridge vent 10 is installed.
- Top panel 30 and vent panels 32 are constructed of a weatherproof three ply material 38 including a generally planar top ply 40 , a generally planar bottom ply 42 and an intermediate ply 44 .
- the intermediate ply 44 defines a multiplicity of airflow passages 46 extending generally transversely to long axis 36 and entirely across top panel 30 and vent panels 32 . Plug 47 may be inserted in the end of the ridge vent 10 .
- FIGS. 2, 3 and 4 depict several possible configurations of the three ply material 38 .
- FIG. 2 depicts a three ply material 38 whose intermediate ply is comprised of a series of cross walls 39 connecting the top ply 40 to bottom ply 42 and defining a plurality of airflow passages 46 therebetween.
- FIGS. 3 and 4 depict an intermediate ply 44 of one or several convoluted or fluted layers 48 defining a plurality of airflow passages 46 .
- FIGS. 3 and 4 also show how multiple layers of three ply material 38 may be stacked to provide many generally parallel airflow passages 46 therethrough.
- Top panel 30 also presents an exterior surface 50 and an interior surface 52 .
- Interior surface 52 may include a routed groove 54 usually extending generally parallel to long axis 36 .
- Routed groove 54 extends through bottom ply 42 and into intermediate ply 44 defining inner openings 56 of airflow passages 46 .
- the outer edges 58 of top panel 30 define the outer openings 60 of airflow passages 46 .
- Vent panels 32 are disposed under the outer edges 58 of top panel 30 in a stacked fashion. They contain a multiplicity of airflow passages 46 oriented generally transverse to long axis 36 . Vent panels 32 may be formed by scoring and folding a sheet of three ply material 38 as depicted in FIG. 5. Vent panels 32 may then be secured to top panel 30 by the use of adhesives or fasteners 62 such as staples.
- vent panels 32 may by cut separately and stacked beneath the outer edges 58 of top panel 30 and secured together and to top panel 30 with fasteners 62 or adhesive.
- airflow passages 46 are formed extending from exterior edges 64 to interior edges 66 of vent panels 32 .
- Filtering fabric 34 is secured along the interior surface 52 of top panel 30 , preferably in the region of the routed groove 54 , and on the bottom side 68 of the lowermost vent panel 32 extending the length of the ridge vent 10 .
- Adhesives, fasteners, heat fusing or any other suitable technique may secure filtering fabric 34 to the ridge vent 10 .
- Filtering fabric 34 may be of any thin, air permeable, water resistant, sheet material. Woven or nonwoven fabrics may be employed as well as air permeable water resistant membranes that are not of fabric. Preferably, filtering fabric 34 allows passage of about 75 percent of the air that would flow were it not present.
- the filtering fabric 34 may be a nonwoven spunbonded material of randomly arranged synthetic polymer fibers.
- filtering fabric 34 may be applied directly over inner openings 56 of airflow passages 46 .
- Filtering fabric 34 may cover only interior edges 64 of vent panels 32 .
- filtering fabric 34 may extend from bottom side 68 of vent panels 32 , up over inner openings 56 , across interior surface 52 of top panel 30 , down over inner openings 56 on the opposite side and onto bottom side 68 on the opposite side.
- the filtering fabric 34 may be secured to interior edges 64 , bottom side 68 of vent panels 32 and interior surface 52 of top panel 30 as required.
- FIG. 8 depicts an alternate embodiment of the ridge vent 10 adapted for use where it is desire to ventilate a shed style roof 70 in contact with an exterior wall 72 .
- Shed roof vent 74 generally includes a generally planar top panel 76 , vent panels 32 and filtering fabric 34 .
- Planar top panel 76 includes flange panel 78 extending along its length. Vent panels 32 are disposed beneath top panel 76 and are stacked and secured in a similar fashion to ridge vent 10 .
- Filtering fabric 34 is attached along the bottom side 68 of the lowermost vent panel 32 and to planar top panel 76 on or near flange panel 78 . Filtering fabric 34 may also be attached to cover the interior edges 66 of vent panels 32 alone. Fasteners, adhesives, heat fusing or other suitable techniques may secure filtering fabric 34 to planar top panel 76 and vent panel 32 . Flashing 80 may overlie the shed roof vent 74 .
- ridge vent 10 is applied to the ridge 26 of a roof 12 over a previously made cutout 24 extending the length of the ridge 26 except for a small portion left uncut at each end of the roof 12 .
- the cutout 24 may be larger than a cutout that would be used with a non-filtering ridge vent in order to compensate for the restriction of airflow caused by the filtering fabric 34 .
- the ridge vent 10 is unrolled or unfolded if it is received packaged in either of these forms.
- the roof vent 10 is disposed so that the routed groove 54 is generally centered over the cutout 24 and the vent panels 32 are generally parallel to the shingles 22 or other roof surface.
- a resilient or conforming piece of material may be placed between the ridge vent 10 and the roof 12 to fill in any gaps that may be present due to any substantial irregularities in the roof structure. This may be helpful in the case of a corrugated metal or tiled roof.
- the ridge vent 12 may be secured to the roof 12 by fasteners such as nails or by adhesives. Nails may be applied directly through top panel 30 where it overlies vent panels 32 and into roof sheathing 18 . A ridgeline (not shown) of shingles 22 may be applied directly over ridge vent 10 .
- the filtering fabric 34 forms a tent like structure.
- Wind blown precipitation such as rain or snow may be carried into the interior of the ridge vent 10 through airflow passages 46 but it is stopped from traveling further by the water resistant filtering fabric 34 while air may still pass.
- Liquid rain or melted snow that accumulates on top of the filtering fabric 34 drains from the ridge vent 10 through the lowermost layer of airflow passages 46 in vent panels 32 onto the roof 12 where it may run off shingles 22 .
- wind blown precipitation may be carried into airflow passages 46 but is prevented from proceeding further by filtering fabric 34 and may drain back out.
- shed roof vent 74 is applied at the top of a shed style roof 74 where it abuts an exterior wall 72 .
- Flange panel 78 may be bent downwardly and secured to exterior wall 72 by fasteners or adhesive. Alternately, the flange panel 78 may be bent upwardly and secured to the wall 72 .
- Flashing 80 may be applied on top of the shed roof vent 74 .
- Vent panels 32 may be nailed or otherwise secured to sheathing 18 through shingles 22 . Any wind blown precipitation that enters the shed roof vent 74 is prevented from entering the space beneath the roof by filtering fabric 34 . Rain or melted snow that accumulates on top of filtering fabric 34 drains from the shed roof vent 74 through the airflow passages 46 in the bottommost vent panel 32 .
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Manufacture Of Tobacco Products (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Glass Compositions (AREA)
- Semiconductor Lasers (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Tents Or Canopies (AREA)
Abstract
A precipitation resistant ventilator for a structure enclosing an interior space. The ventilator encloses a space that is in communication with the structure interior space. A thin sheet of air permeable water resistant material is disposed within the ventilator interior. The thin sheet of air permeable water resistant material forms a barrier that excludes the entry of precipitation and other foreign matter into the roof structure while still allowing air exchange.
Description
- This application is a continuation of U.S. patent application Ser. No. 10/636,178 filed Aug. 7, 2003, which is, in turn, a continuation of application Ser. No. 10/209,851 filed Jul. 31, 2002, now U.S. Pat. No. 6,623,354 and application Ser. No. 09/651,071 filed Aug. 30, 2000, now U.S. Pat. No. 6,450,882.
- The present invention relates to roof ventilators folded from a blank of corrugated plastic sheet material having a top panel and two vent panels. More particularly, it relates to a roof vent of corrugated construction including an internal filtering material to exclude precipitation, debris and vermin from entry into the vented roof.
- It is a common practice in the construction of structures to ventilate gable roofs by providing a vent along the roof ridge. Ventilation apertures are formed in the construction process by leaving or cutting an open slot along the ridge through the sheathing material covering the roof. Heated air rises and escapes at the ridge taking with it moisture that may have accumulated within the roof. The flow of wind over the ridge of the roof assists in the extraction of moisture and heated air by creating a zone of relatively reduce pressure as it crosses the ridge. Soffit vents enable the entry of fresh exterior air into the roof to replace air that has left through the ridge vent. Soffit vents are openings in the soffit material covering the undersides of the overhanging eaves of the roof.
- Ideally, a ventilated roof provides for an unrestricted outflow of air through the ridge vent and inflow through the soffit vents. However, without protection of the ventilating openings, wind blown precipitation, debris and insects enter the roof and encourage damage to the structure through mildew, rot and infestation. A ventilated cap is therefore placed over the open slot in the ridge and attached to the roof along each side.
- Therefore, many types of vent caps have been developed in an effort to provide free flow of air while excluding rain, snow and insects. Louvers, baffles and screens have been standard features of roof vents for decades.
- Snow, in particular, is a great concern. It has a small particle size and is lightweight. Wind can carry snow upward and into roof vents readily. Snow particles may bypass louvers and deflectors that prevent the entry of most rain. As much as two feet of wind driven snow has been reported to have passed through roof vents and accumulated inside roof structures.
- A number of ridge vent caps employ filtering material to restrict the entry of precipitation and foreign matter. Filtering materials include porous foams and fibrous materials. Examples of the use of porous foams include U.S. Pat. No. 5,830,059 issued to Sells, U.S. Pat. No. 5,673,521 issued to Coulton et al. and U.S. Pat. No. 4,876,950 issued to Rudeen. Both closed cell foams and open cell foams have been utilized. Open cell foams have the benefit of allowing greater airflow but tend to absorb a substantial amount of water. Closed cell foams absorb little water but restrict airflow to a greater degree. Foam products, in general, tend to deteriorate with age and exposure to the elements.
- Fibrous materials enjoy wider use as roof vent filters. Examples include U.S. Pat. No. 5,902,432 issued to Coulton et al., U.S. Pat. No. 5,830,059 issued to Sells, U.S. Pat. No. 5,561,953, 5,425,672, 5,352,154, 5,167,579 all issued to Rotter. These patents and others disclose the use of mats of randomly aligned synthetic fibers to exclude vermin and the elements from roof vents. The Rotter patents disclose roof vents made entirely from mats of randomly aligned synthetic fibers. Fiber mats may suffer from compression, for example, under a snow load, and add expense and complexity to the construction of roof vents.
- Another approach to preventing the entry of precipitation and foreign matter into vents is to employ check valves structured to close at a predetermined wind speed so as to stop the inflow of air and precipitation. Check valves have moving parts and are prone to the possibility of wear and blockage and when they operate ventilation is restricted. They also complicate the manufacturing process. U.S. Pat. No. 5,803,805 to Sells discloses a check valve ridge vent.
- In recent years the use of corrugated plastic sheet materials to manufacture roof vents has presented to the marketplace a variety of inexpensive, strong, durable ridge vents which may be applied in sections or as a continuous roll. Ridge vents of this type are typically applied along the peak of a roof and covered by a row of shingles. They are thus referred to as “shingle over roof vents.” Some have sufficient structural integrity such that they can be fastened to the roof with a pneumatic nail gun without crushing the vent.
- Examples of corrugated plastic ridge vents include U.S. Pat. No. 5,651,734 issued to Morris, U.S. Pat. No. 5,934,995 to Morris, Kasner and Stoll and U.S. Pat. No. 5,947,817 to Morris, Gosz and Stoll which are incorporated herein in their entirety by reference.
- Wind deflectors are sometimes installed along with the vent in order to restrict the entry of rain and snow into the vent. The installation of wind deflectors requires an additional step in the installation process with an attendant increase in time and expense.
- The applicant is aware of a single example of a corrugated ridge vent employing a filtering material to exclude precipitation and the like. U.S. Pat. No. 5,704,834 issued to Sells discloses the use of a flexible, air permeable, moisture repelling, woven or nonwoven fabric covering the outer side of the vent passages to resist the penetration of moisture into the vent passages. The fabric filter is held in place by a perforated metal flashing attached either to the roof or to the vent.
- Considerable complexity is added to the manufacturing process in order to incorporate the flashing into the vent. The presence of a rigid or semi rigid flashing may also prevent or complicate the rolling of the vent for transport and reduce ease of application. Additionally, the filtering fabric is exposed to the elements. Sun and wind may accelerate its deterioration.
- It would be desirable to produce a ridge vent of folded corrugated plastic construction that effectively excludes wind blown precipitation and other foreign matter. The process of manufacturing the ridge vent should be as simple as possible. It would be preferable for such a ridge vent to require no flashing to support the filtering material. The ridge vent would ideally be possible to produce either in a continuous roll or in discrete sections. It would be preferable that filtering material be protected from exposure to the elements to maximize its life.
- The present invention largely solves the above problems by providing a shingle over ridge vent that effectively excludes the entry of precipitation and foreign matter into the roof space. The ridge vent is sturdy, easily manufactured and readily installed. In addition, the filtering material that excludes precipitation is protected from factors that speed its deterioration.
- The ridge vent is constructed of corrugated weather resistant material having a convoluted intermediate ply. Airflow passages in the convoluted layer are linearly oriented generally perpendicular to the long axis of the ridge vent.
- The material is cut and scored so that it may be folded to have a single top panel extending its entire length. At either side of and below the top panel a plurality of folds create a plurality of stacked layers of the corrugated material with a plurality of airflow passages therethrough. A routed groove may extend the length of the bottom side of the top panel of the ridge vent to facilitate bending the ridge vent to conform to different roof pitches and to provide an additional exit path for air flowing out of the ridge vent.
- A sheet of air permeable, water resistant, woven or nonwoven fabric or other membrane is applied to the bottom side of the vent. The filtering fabric is bonded to the corrugated material in the vicinity of the peak of the vent and on the bottom sides of the stacked, corrugated vent material. When the ridge vent is applied to the roof ridge the filtering fabric forms a tent like structure such that any accumulated rainwater drains out through the bottommost layer of the stacked side vent portions of the ridge vent.
- The enclosure of the filtering fabric inside the ridge vent protects the fabric from exposure to sunlight and other factors that encourage deterioration.
- The ridge vent may be produced in lengthy continuous rolls or discrete sections for installation. Discrete sections of ridge vent may be stacked flat or folded then stacked for shipping and handling. Multiple sections may be butted together end to end to cover a lengthy ridge application.
- The vent material is unrolled or unfolded and disposed along the roof ridge so as to straddle the precut slot in the roof sheathing. The ridge vent may then be secured to the roof ridge with fasteners such as nails. It may be caulked as necessary. An individual skilled in the art will appreciate that if a roof is substantially irregular such as a corrugated metal roof or a tiled roof that a resilient conforming material may be placed beneath the ridge vent to provide a tight seal between the ridge vent and the roof. An end plug of resilient foam or other appropriate material may be inserted and secured in the end of the roof vent to close off the opening there. The ridge vent then may be covered with shingles nailed directly through the ridge vent into the roof sheathing.
- FIG. 1 is a fragmentary elevated perspective view of a ridge vent in accordance with the present invention being installed on a roof;
- FIG. 2 is a side plan view of a three ply weatherproof material that may be used in the construction of the present invention;
- FIG. 3 is a side plan view of two layers of a three ply weatherproof material that may be used in the construction of the present invention;
- FIG. 4 is a side plan view of two layers of an alternate three ply weatherproof material that may be used in the construction of the present invention;
- FIG. 5 is an end plan view of the ridge vent of FIG. 1 depicting a folding scheme for the hinge panels forming the lateral vents of the present invention;
- FIG. 6 is an end plan view of an embodiment of the present invention as stored and shipped in a flat configuration;
- FIG. 6a is an end plan view of an alternate embodiment of the present invention as stored and shipped in a flat configuration;
- FIG. 6b is an end plan view of another alternate embodiment of the present invention as stored and shipped in a flat configuration;
- FIG. 7 is an end sectional view an embodiment of the ridge vent installed on a roof ridge;
- FIG. 7a is an end sectional view an alternate embodiment of the ridge vent installed on a roof ridge; and
- FIG. 8 is an end sectional view of an alternate embodiment of the present invention as installed on a shed roof abutting a vertical exterior wall.
- FIG. 1 depicts the precipitation resistant ridge
cap roof vent 10 being installed on aroof 12. The roof depicted is a rafter roof, though theridge vent 10 may be installed on many other types of roofs to provide ventilation. Theroof 12 depicted includesrafters 14 secured to aridge board 16.Rafters 14support sheathing 18.Sheathing 18 may be of plywood, oriented strand board, planks or other suitable material secured torafters 14. Generally sheathing 18 is overlaid with tarred feltpaper 20 which is in turn overlaid withshingles 22, though other roofing materials may be employed. Acutout slot 24 is provided along theridge 26.Slot 24 may terminate some distance from theend 28 of theridge 26. - The
ridge vent 10, as depicted in FIGS. 1, 5, 6, and 7, broadly includes atop panel 30, a plurality ofvent panels 32 andfiltering fabric 34.Top panel 30 presents along axis 36 aligned generally parallel with theridge 26 of theroof 12 whenridge vent 10 is installed.Top panel 30 and ventpanels 32 are constructed of a weatherproof threeply material 38 including a generally planartop ply 40, a generally planar bottom ply 42 and anintermediate ply 44. Theintermediate ply 44 defines a multiplicity ofairflow passages 46 extending generally transversely tolong axis 36 and entirely acrosstop panel 30 and ventpanels 32.Plug 47 may be inserted in the end of theridge vent 10. - FIGS. 2, 3 and4 depict several possible configurations of the three
ply material 38. FIG. 2 depicts a threeply material 38 whose intermediate ply is comprised of a series ofcross walls 39 connecting the top ply 40 to bottom ply 42 and defining a plurality ofairflow passages 46 therebetween. FIGS. 3 and 4 depict anintermediate ply 44 of one or several convoluted orfluted layers 48 defining a plurality ofairflow passages 46. FIGS. 3 and 4 also show how multiple layers of threeply material 38 may be stacked to provide many generallyparallel airflow passages 46 therethrough. -
Top panel 30 also presents anexterior surface 50 and aninterior surface 52.Interior surface 52 may include a routedgroove 54 usually extending generally parallel tolong axis 36. Routedgroove 54 extends throughbottom ply 42 and intointermediate ply 44 defininginner openings 56 ofairflow passages 46. The outer edges 58 oftop panel 30 define theouter openings 60 ofairflow passages 46. -
Vent panels 32 are disposed under theouter edges 58 oftop panel 30 in a stacked fashion. They contain a multiplicity ofairflow passages 46 oriented generally transverse tolong axis 36.Vent panels 32 may be formed by scoring and folding a sheet of threeply material 38 as depicted in FIG. 5.Vent panels 32 may then be secured totop panel 30 by the use of adhesives orfasteners 62 such as staples. - Alternately, vent
panels 32 may by cut separately and stacked beneath theouter edges 58 oftop panel 30 and secured together and totop panel 30 withfasteners 62 or adhesive. Thusairflow passages 46 are formed extending fromexterior edges 64 tointerior edges 66 ofvent panels 32. - Filtering
fabric 34 is secured along theinterior surface 52 oftop panel 30, preferably in the region of the routedgroove 54, and on thebottom side 68 of thelowermost vent panel 32 extending the length of theridge vent 10. Adhesives, fasteners, heat fusing or any other suitable technique may securefiltering fabric 34 to theridge vent 10. - Filtering
fabric 34 may be of any thin, air permeable, water resistant, sheet material. Woven or nonwoven fabrics may be employed as well as air permeable water resistant membranes that are not of fabric. Preferably, filteringfabric 34 allows passage of about 75 percent of the air that would flow were it not present. Thefiltering fabric 34 may be a nonwoven spunbonded material of randomly arranged synthetic polymer fibers. - Referring to FIGS. 6a and 7 a, in an alternate embodiment of
ridge vent 10filtering fabric 34 may be applied directly overinner openings 56 ofairflow passages 46. Filteringfabric 34 may cover onlyinterior edges 64 ofvent panels 32. - Alternately, as depicted in FIG.
6b filtering fabric 34 may extend frombottom side 68 ofvent panels 32, up overinner openings 56, acrossinterior surface 52 oftop panel 30, down overinner openings 56 on the opposite side and ontobottom side 68 on the opposite side. Thefiltering fabric 34 may be secured tointerior edges 64,bottom side 68 ofvent panels 32 andinterior surface 52 oftop panel 30 as required. - FIG. 8 depicts an alternate embodiment of the
ridge vent 10 adapted for use where it is desire to ventilate ashed style roof 70 in contact with anexterior wall 72. Shed roof vent 74 generally includes a generally planartop panel 76,vent panels 32 andfiltering fabric 34. Planartop panel 76 includesflange panel 78 extending along its length.Vent panels 32 are disposed beneathtop panel 76 and are stacked and secured in a similar fashion toridge vent 10. Filteringfabric 34 is attached along thebottom side 68 of thelowermost vent panel 32 and to planartop panel 76 on or nearflange panel 78. Filteringfabric 34 may also be attached to cover theinterior edges 66 ofvent panels 32 alone. Fasteners, adhesives, heat fusing or other suitable techniques may securefiltering fabric 34 to planartop panel 76 and ventpanel 32. Flashing 80 may overlie theshed roof vent 74. - Referring to FIG. 1, in operation,
ridge vent 10 is applied to theridge 26 of aroof 12 over a previously madecutout 24 extending the length of theridge 26 except for a small portion left uncut at each end of theroof 12. Thecutout 24 may be larger than a cutout that would be used with a non-filtering ridge vent in order to compensate for the restriction of airflow caused by thefiltering fabric 34. Theridge vent 10 is unrolled or unfolded if it is received packaged in either of these forms. Theroof vent 10 is disposed so that the routedgroove 54 is generally centered over thecutout 24 and thevent panels 32 are generally parallel to theshingles 22 or other roof surface. It will be appreciated by those skilled in the art that a resilient or conforming piece of material may be placed between theridge vent 10 and theroof 12 to fill in any gaps that may be present due to any substantial irregularities in the roof structure. This may be helpful in the case of a corrugated metal or tiled roof. - Once in place, the
ridge vent 12 may be secured to theroof 12 by fasteners such as nails or by adhesives. Nails may be applied directly throughtop panel 30 where it overlies ventpanels 32 and intoroof sheathing 18. A ridgeline (not shown) ofshingles 22 may be applied directly overridge vent 10. - As can be seen in FIGS. 1, and7, when the ridge vent is installed the
filtering fabric 34 forms a tent like structure. Wind blown precipitation such as rain or snow may be carried into the interior of theridge vent 10 throughairflow passages 46 but it is stopped from traveling further by the waterresistant filtering fabric 34 while air may still pass. Liquid rain or melted snow that accumulates on top of thefiltering fabric 34 drains from theridge vent 10 through the lowermost layer ofairflow passages 46 invent panels 32 onto theroof 12 where it may run offshingles 22. - In the embodiment depicted in FIGS. 6a and 6 b, wind blown precipitation may be carried into
airflow passages 46 but is prevented from proceeding further by filteringfabric 34 and may drain back out. - Referring to FIG. 8, shed
roof vent 74 is applied at the top of ashed style roof 74 where it abuts anexterior wall 72.Flange panel 78 may be bent downwardly and secured toexterior wall 72 by fasteners or adhesive. Alternately, theflange panel 78 may be bent upwardly and secured to thewall 72. Flashing 80 may be applied on top of theshed roof vent 74.Vent panels 32 may be nailed or otherwise secured to sheathing 18 throughshingles 22. Any wind blown precipitation that enters theshed roof vent 74 is prevented from entering the space beneath the roof by filteringfabric 34. Rain or melted snow that accumulates on top of filteringfabric 34 drains from theshed roof vent 74 through theairflow passages 46 in thebottommost vent panel 32. - The present invention may be embodied in other specific forms without departing from the essential attributes thereof; therefore, the illustrated embodiments should be considered in all respects as illustrative and not restrictive, reference being made to the appended claims rather than to the foregoing description to indicate the scope of the invention.
Claims (37)
1. A vent for conveying air between a structure interior and the environment, comprising:
a top panel having an interior surface and a multiplicity of discrete top panel air passages providing for fluid communication between the structure interior and the environment;
at least one vent part with a bottom surface and in a contacting relation with the interior surface of the top panel, the at least one vent part defining a plurality of discrete vent part air passages providing for fluid communication between the structure interior and the environment; and
a filter material secured to the bottom surface of the at least one vent part and to the top panel.
2. The vent of claim 1 , in which the top panel comprises a weatherproof three-ply material.
3. The vent of claim 2 , in which the three-ply material comprises a pair of outer plies and a series of cross walls disposed between the outer plies.
4. The vent of claim 2 , in which the three-ply material comprises a pair of outer plies and an intermediate ply disposed between the outer plies, the outer plies and the intermediate ply defining the plurality of top panel air passages.
5. The vent of claim 4 , in which the intermediate ply is generally convoluted or fluted.
6. The vent of claim 2 , in which the at least one vent part comprises at least one layer, the at least one layer comprising the three-ply material.
7. The vent of claim 6 , in which the three-ply material comprises a pair of outer plies and an intermediate ply disposed between the outer plies, the outer plies and the intermediate ply defining the plurality of vent part air passages.
8. The vent of claim 6 , in which the three-ply material comprises a pair of outer plies and a series of cross walls disposed between the outer plies.
9. The vent of claim 1 , in which a plurality of spaced apart vent parts are present.
10. The vent of claim 9 , in which at least one of the plurality of vent parts comprises a plurality of layers, each of the plurality of layers constructed from a weatherproof three-ply material.
11. The vent of claim 1 , in which the top panel is characterized by a longitudinal axis and in which the multiplicity of top panel air passages and the multiplicity of vent part air passages extend generally transversely or generally perpendicularly to the top panel longitudinal axis.
12. The vent of claim 11 , in which the top panel comprises a route defined therein, the route generally parallel to the longitudinal axis.
13. A vent, comprising:
a top panel having a multiplicity of discrete top panel air passages;
a vent part contacting the top panel and having a bottom surface, an interior surface, and an exterior surface and formed from a three-ply material with a pair of outer plies and an intermediate ply disposed between the outer plies to define a multiplicity of discrete vent part air passages, each of the vent part air passages extending between the interior surface and the exterior surface; and
an air permeable filter attached to the vent and positioned to filter air being conveyed through the top panel air passages or the vent air part air passages.
14. A device for venting a structure, comprising:
a top panel having an interior surface and comprising a multiplicity of discrete top panel air passages;
a plurality of vent parts, at least one of the vent parts contacting the top panel interior surface, each of the plurality of vent parts having a bottom surface, an interior edge and an exterior edge and comprising at least one layer of a three-ply material, the three-ply material having a pair of outer plies and an intermediate ply disposed between the outer plies so as to define a multiplicity of discrete vent part air passages, each of the multiplicity of vent part air passages exposed at one of the interior edges and one of the exterior edges; and
a filtering material extending between the top panel and the bottom surface of one of the vent parts.
15. A method of venting a structure with an interior and with a vent placed over an opening in the structure, the vent comprising a top panel, at least one vent part, and an air permeable filter material, the top panel having an interior surface and a multiplicity of discrete top panel air passages, the at least one vent part having a bottom surface and contacting the top panel interior surface, the at least one vent part comprising a weatherproof material defining a multiplicity of discrete vent part air passages, the filter material secured one of the at least one vent part and to the top panel; the method comprising allowing air exchange between the structure interior and the environment via the top panel air passages, the vent part air passages, and the filter material.
16. A method of constructing a vent, comprising:
contacting a vent part to a top panel, each of the top panel and the vent part comprising a weatherproof material defining a multiplicity of discrete air passages; and
securing an air permeable filter material to the top panel and to the vent part.
17. The method of claim 16 , in which the filter material is secured to a bottom surface of the vent part.
18. The method of claim 16 , in which the contacted top panel and the contacted vent part comprises a weatherproof three ply-material defining the multiplicity of air passages.
19. The method of claim 18 , in which the three-ply material comprises a pair of outer plies and an intermediate ply disposed between the outer plies so as to define the multiplicities of air passages.
20. The method of claim 19 , in which the intermediate ply is generally convoluted or generally fluted.
21. The method of claim 18 , in which the weatherproof material comprises a pair of outer plies and a series of cross walls disposed between the outer plies to define the multiplicities of air passages.
22. The method of claim 16 , in which the vent part comprises a plurality of layers made from the weatherproof material.
23. The method of claim 16 , in which a route is defined in the top panel so as expose the air passages defined in the top panel.
24. The method of claim 16 , in which a plurality of vent parts are contacted to the top panel.
25. The method of claim 16 , further comprising securing the vent part to the top panel.
26. A method of installing a vent, comprising disposing the vent over an opening in a roof of a structure, the vent comprising a top panel, a vent part, and a filter material, the top panel having an interior surface and a multiplicity of discrete top panel air passages providing for fluid communication between the structure interior and the environment, the vent part with a bottom surface and in a contacting relation with the interior surface of the top panel, the vent part comprising a material defining a plurality of discrete vent part air passages providing for fluid communication between the structure interior and the environment, the filter material secured to the bottom surface of the vent part and to the top panel.
27. The method of claim 26 , in which the top panel comprises a three-ply material.
28. The method of claim 27 , in which the three-ply material comprises a pair of outer plies and an intermediate ply disposed between the outer plies, the outer plies and the intermediate ply defining the plurality of top panel air passages.
29. The method of claim 26 , in which the top panel comprises a pair of outer plies and a series of cross walls disposed between the outer plies.
30. The method of claim 27 , in which the intermediate ply is generally convoluted or fluted.
31. The method of claim 27 , in which the vent part comprises a plurality of layers, each of the plurality of layers comprising the three-ply material.
32. The method of claim 31 , in which the three-ply material comprises a pair of outer plies and an intermediate ply disposed between the outer plies to define the multiplicity of vent part air passages.
33. The method of claim 26 , in which a plurality of opposed spaced apart vent parts are present.
34. The method of claim 33 , in which one of the plurality of vent parts comprises a plurality of layers.
35. The method of claim 26 , in which the top panel is characterized by a longitudinal axis and in which the multiplicity of top panel air passages and the multiplicity of vent part air passages extend generally transversely or generally perpendicularly to the top panel longitudinal axis.
36. The method of claim 35 , in which the top panel comprises a route, the route generally parallel to the longitudinal axis.
37. The method of claim 26 , further comprising securing the vent to the roof.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/826,651 US20040198216A1 (en) | 2000-08-30 | 2004-04-16 | Precipitation resistant ridge vent |
US10/964,591 US20050136830A1 (en) | 2000-08-30 | 2004-10-13 | Precipitation resistant off-ridge vent |
US12/008,405 US20080125028A1 (en) | 2000-08-30 | 2008-01-10 | Precipitation resistant ridge vent |
US12/074,872 US20080182507A1 (en) | 2000-08-30 | 2008-03-06 | Precipitation resistant ridge vent |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/651,071 US6450882B1 (en) | 2000-08-30 | 2000-08-30 | Precipitation resistant ridge vent |
US10/209,851 US6623354B2 (en) | 2000-08-30 | 2002-07-31 | Precipitation resistant ridge vent |
US10/636,178 US6913530B2 (en) | 2000-08-30 | 2003-08-07 | Precipitation resistant ridge vent |
US10/826,651 US20040198216A1 (en) | 2000-08-30 | 2004-04-16 | Precipitation resistant ridge vent |
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Application Number | Title | Priority Date | Filing Date |
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US10/636,178 Continuation US6913530B2 (en) | 2000-08-30 | 2003-08-07 | Precipitation resistant ridge vent |
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US10/964,591 Continuation US20050136830A1 (en) | 2000-08-30 | 2004-10-13 | Precipitation resistant off-ridge vent |
US12/008,405 Continuation US20080125028A1 (en) | 2000-08-30 | 2008-01-10 | Precipitation resistant ridge vent |
US12/074,872 Continuation US20080182507A1 (en) | 2000-08-30 | 2008-03-06 | Precipitation resistant ridge vent |
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US20040198216A1 true US20040198216A1 (en) | 2004-10-07 |
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US10/209,851 Expired - Lifetime US6623354B2 (en) | 2000-08-30 | 2002-07-31 | Precipitation resistant ridge vent |
US10/636,178 Expired - Lifetime US6913530B2 (en) | 2000-08-30 | 2003-08-07 | Precipitation resistant ridge vent |
US10/826,651 Abandoned US20040198216A1 (en) | 2000-08-30 | 2004-04-16 | Precipitation resistant ridge vent |
US10/964,591 Abandoned US20050136830A1 (en) | 2000-08-30 | 2004-10-13 | Precipitation resistant off-ridge vent |
US12/008,405 Abandoned US20080125028A1 (en) | 2000-08-30 | 2008-01-10 | Precipitation resistant ridge vent |
US12/074,872 Abandoned US20080182507A1 (en) | 2000-08-30 | 2008-03-06 | Precipitation resistant ridge vent |
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US09/651,071 Expired - Lifetime US6450882B1 (en) | 2000-08-30 | 2000-08-30 | Precipitation resistant ridge vent |
US10/209,851 Expired - Lifetime US6623354B2 (en) | 2000-08-30 | 2002-07-31 | Precipitation resistant ridge vent |
US10/636,178 Expired - Lifetime US6913530B2 (en) | 2000-08-30 | 2003-08-07 | Precipitation resistant ridge vent |
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US10/964,591 Abandoned US20050136830A1 (en) | 2000-08-30 | 2004-10-13 | Precipitation resistant off-ridge vent |
US12/008,405 Abandoned US20080125028A1 (en) | 2000-08-30 | 2008-01-10 | Precipitation resistant ridge vent |
US12/074,872 Abandoned US20080182507A1 (en) | 2000-08-30 | 2008-03-06 | Precipitation resistant ridge vent |
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US (7) | US6450882B1 (en) |
EP (1) | EP1186728B1 (en) |
AT (1) | ATE383478T1 (en) |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US20080125028A1 (en) * | 2000-08-30 | 2008-05-29 | Liberty Diversified Industries | Precipitation resistant ridge vent |
US7179165B2 (en) | 2005-01-11 | 2007-02-20 | Cook William V | Automatic vent damper |
US20070094953A1 (en) * | 2005-09-30 | 2007-05-03 | Galeazzo John P | Roof vents |
US7562498B2 (en) | 2005-09-30 | 2009-07-21 | Galeazzo John P | Roof vents |
US10151500B2 (en) | 2008-10-31 | 2018-12-11 | Owens Corning Intellectual Capital, Llc | Ridge vent |
US9022845B2 (en) * | 2009-11-12 | 2015-05-05 | John C. Henderson | Roof ventilation apparatus |
US20110111690A1 (en) * | 2009-11-12 | 2011-05-12 | Henderson John C | Roof Ventilation Apparatus |
USRE47799E1 (en) * | 2009-11-12 | 2020-01-07 | John C. Henderson | Roof ventilation apparatus |
US20110201266A1 (en) * | 2010-02-12 | 2011-08-18 | Henderson John C | Ventilated Roof Apparatus and Method |
US10370855B2 (en) | 2012-10-10 | 2019-08-06 | Owens Corning Intellectual Capital, Llc | Roof deck intake vent |
US9695594B2 (en) | 2015-06-16 | 2017-07-04 | Liberty Diversified International, Inc. | Ridge vent |
US10731352B2 (en) | 2016-07-15 | 2020-08-04 | Owens Corning Intellectual Capital, Llc | Rollable ridge vent |
US10604939B2 (en) | 2018-02-15 | 2020-03-31 | Owens Corning Intellectual Capital, Llc | Telescoping ridge vent |
Also Published As
Publication number | Publication date |
---|---|
EP1186728A2 (en) | 2002-03-13 |
US20040029523A1 (en) | 2004-02-12 |
DE60132279T2 (en) | 2009-01-08 |
CA2355878C (en) | 2005-06-14 |
US6623354B2 (en) | 2003-09-23 |
EP1186728B1 (en) | 2008-01-09 |
ATE383478T1 (en) | 2008-01-15 |
US6450882B1 (en) | 2002-09-17 |
CA2355878A1 (en) | 2002-02-28 |
US20080182507A1 (en) | 2008-07-31 |
DE60132279D1 (en) | 2008-02-21 |
US20020193065A1 (en) | 2002-12-19 |
US6913530B2 (en) | 2005-07-05 |
EP1186728A3 (en) | 2002-03-20 |
US20050136830A1 (en) | 2005-06-23 |
DK1186728T3 (en) | 2008-03-31 |
US20080125028A1 (en) | 2008-05-29 |
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Legal Events
Date | Code | Title | Description |
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Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |