Arch top roof vent

Abstract

A roof vent for ventilating a sloped roof of a building via a hole in the roof to atmosphere. The roof vent includes a flange portion for affixing on the roof, the flange portion having an opening in communication with the hole in the roof. The roof vent also includes a wall surface extending upwardly from the flange portion and extending around a perimeter of the opening to inhibit precipitation travelling along the flange portion from entering the opening and a cap having a first face for directing towards a peak of the roof, a second face opposite the first face, two opposing faces each connecting the first face to the second face, and a cover surface extending in a region between the first face, the second face and the two opposing side faces for inhibiting precipitation from entering the opening, the cap being supported by at least one support member and dimensioned to cover over the opening while providing a gap between the flange portion and one or more of the faces for facilitating passage of the atmosphere between the wall surface and the one or more of the faces; and the first face having a first surface connecting the two opposing side faces, the first surface extending from the cover surface towards the flange portion, wherein at least a portion of the first surface is curvilinear and the first surface is positioned outside a portion of the region between the two opposing faces.

1 . A roof vent for ventilating a sloped roof of a building via a hole in the roof to atmosphere, the roof vent comprising:
 a flange portion for affixing on the roof, the flange portion having an opening in communication with the hole in the roof;   a wall surface extending upwardly from the flange portion and extending around a perimeter of the opening to inhibit precipitation travelling along the flange portion from entering the opening;   a cap having a first face for directing towards a peak of the roof, a second face opposite the first face, two opposing faces each connecting the first face to the second face, and a cover surface extending in a region between the first face, the second face and the two opposing side faces for inhibiting precipitation from entering the opening, the cap being supported by at least one support member and dimensioned to cover over the opening while providing a gap between the flange portion and one or more of the faces for facilitating passage of the atmosphere between the wall surface and the one or more of the faces; and   the first face having a first surface connecting the two opposing side faces, the first surface extending from the cover surface towards the flange portion, wherein at least a portion of the first surface is curvilinear and the first surface is positioned outside a portion of the region between the two opposing faces.   
     
     
         2 . The roof vent of  claim 1  wherein the wall surface has a first side directed towards a peak of the roof, a second side opposite the first side and two opposing sides each connecting the first side to the second side, wherein the first side of the wall surface provides a surface connecting the opposing sides and extends laterally from the second side towards the peak of the roof such that a middle point of the first side is laterally closer to the peak of the roof than the two opposing sides of the wall surface. 
     
     
         3 . The roof vent of  claim 1  wherein said least a portion of the first surface is curvilinear is arcuate and of a concave shape with respect to the cover surface. 
     
     
         4 . The roof vent of  claim 2  wherein the first face extending towards the roof and the first side extending upwardly from the flange portion provide an overlap region. 
     
     
         5 . The roof vent of  claim 2  wherein the first face and the first side are co-planar extending towards the roof and upwardly from the flange portion, respectively. 
     
     
         6 . The roof vent of  claim 1  wherein the faces and wall surface are configured such that atmosphere can circulate between the gap and an air passage, the cap and the wall surface being further configured such that the air passage surrounds the wall surface. 
     
     
         7 . The roof vent of  claim 6  wherein the air passage surrounding the wall surface has a uniform cross sectional area. 
     
     
         8 . The roof vent of  claim 1  wherein the wall surface has a plurality of apertures to allow air to pass through the wall surface. 
     
     
         9 . The roof vent of  claim 1  wherein the cap is connected to a top of the wall surface by the at least one supporting member and a bottom of the wall surface is connected to the flange portion. 
     
     
         10 . The roof vent of  claim 1 , wherein the precipitation is selected from the group consisting of water and snow. 
     
     
         11 . The roof vent of  claim 1 , wherein said along the flange portion is adjacent and outside of contact with a surface of the flange portion. 
     
     
         12 . The roof vent of  claim 2 , wherein the first side has at least a portion thereof as curvilinear 
     
     
         13 . The roof vent of  claim 12 , wherein said portion thereof as curvilinear is arcuate and of a concave shape with respect to the opening.