Static structures (e.g. – buildings) – Wall – ceiling – floor – or roof designed for ventilation or... – With the vent or drain entirely along at least one...
Reexamination Certificate
2000-02-02
2001-06-05
Friedman, Carl D. (Department: 3635)
Static structures (e.g., buildings)
Wall, ceiling, floor, or roof designed for ventilation or...
With the vent or drain entirely along at least one...
C052S302100, C052S199000, C052S095000, C052S096000, C454S365000, C454S366000, C454S260000, C454S250000
Reexamination Certificate
active
06240690
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to attic and roof ventilation systems and more particularly to providing ventilation to sloped roof structures having metal roofs.
2. Description of the Background
The practice of ventilating sloped roofs structures by creating a vent opening along the roof ridge is well known in the construction industry. A vent slot is created during construction by leaving a gap between the roof deck and the roof beam running along the ridge extending essentially the length of the roof. The air is vented from the structure by convection airflow and by suction from wind blowing across the roof. The vent slot must be covered to keep water, dirt and pests out of the structure. The required covering in turn diminishes the air flow from under the roof. Typically, in metal roof installations, a ridge panel or cap is connected to the top row of roof panels atop the ridge slot with a closure strip or mastic disposed between the ridge panel and the roof panels. However, covering the ridge slot prevents the desired ventilation from under the roof. Another well known method in the construction industry involves installing ventilators atop the ridge slot. However, that ventilator installation requires additional labor which is very effective expensive.
Powered fan ventilation is well-known for buildings. However, the power required to operate the fan in such devices requires an additional power outlet installation for the roof. Also, ventilating the building in this manner may be cost prohibitive because of the energy cost, and there is potential fire hazard associated with unattended electrical appliance operation. Passive, convection type vents provide an economical and safe alternative to powered fans for ventilating buildings. In buildings having peaked roofs, the natural flow of air within the building rises to the uppermost area, which is typically
adjacent the peak of the roof. Several attempts have been made to overcome the problems of passive ventilating the metal roofs. U.S. Pat. No. 5,561,953 discloses a contoured ventilation system for metal roofs that requires a sheet overlaying the decking wherein the sheet has a plurality of projections projecting away from the decking, and a strip having a surface including a plurality of recesses shaped to match the projections of the sheet. The requirement of having such a sheet adds to the expense and further degrades the ventilation efficiency. U.S. Pat. No. 5,826,383 describes a roof closure vent system in which the ridge closure vent requires a closure member having lateral perforations for air to pass through, and a mesh mat adjacent to the closure member. Ventilation through a perforated members reduces ventilation efficiency by reducing the available vent volume, and further the perforated member is subject to degradation over time. A roof ventilating system for frame construction building is described in U.S. Pat. No. 5,924,925 that discloses a vent cover assembly in which flashing strips are installed to the vent cover. The vent cover assembly is mounted over the vent opening. Clearly, additional weight of the vent cover and flashing strips reduces passive ventilation efficiency of the system.
Therefore, it is an objective of this invention to provide an effective passive ventilation system for metal roofs without any moving parts that adversely impact ventilation efficiency. Another objective of the invention is to eliminate use of any porous sheet or use of the like material that may degrade over time and that adversely impacts ventilation efficiency. It is yet another objective of the invention to provide a safe and economic installation of the metal roof on building structures.
SUMMARY
A metal roof for a building structure is disclosed that has at least two parallel sloped roof rafters joined to one side of a roof beam. At least one deck is connected to the roof rafters creating a vent slot between the deck and the roof rafters where the deck is substantially parallel to the roof beam. The metal roof requires at least one ridge vent, having a base side, a first side, and a second side. The angle between the first side and the base side of the ridge vent is about 100° or less, and the angle between the second side and the base side is about 100° or less. The first side and the second side of the ridge vent are oriented in the same direction, and the ridge vent has at least one vent opening located on the base side. The first side of the ridge vent is attached to the deck substantially parallel to and in proximity of the vent slot. A metal roof ridge is removably secured to the second side of the ridge vent. A metal roof panel is attached to the deck, where a panel side of the metal roof panel is in close proximity to the vent slot. The panel side of the metal roof panel is bent at an angle from the deck to form a panel bend slightly smaller than the opening of the ridge vent. The panel bend is inserted in to the opening of the ridge vent. The metal roof panel has ribs substantially perpendicular to the vent slot, and the height of the ribs is sufficient for securely inserting the metal roof panel into the opening of the ridge vent. The metal roof panel is secured on the deck by suitable means known in the construction industry.
REFERENCES:
patent: 5022203 (1991-06-01), Boyd
patent: 5427571 (1995-06-01), Sells
patent: 5561953 (1996-10-01), Rotter
patent: 5605022 (1997-02-01), Fulton
patent: 5826383 (1998-10-01), Garrison
patent: 5924925 (1999-07-01), Nystrom
James Clifford H.
James Michael
Buskop Wendy K.
Buskop Law Group P.C.
Friedman Carl D.
Horton Yvonne M.
Roof & Metal Systems, Inc.
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