Two piece roof vent

Abstract

A roof vent designed to be nestable for easy shipment and which can be injection molded includes a base member and cover member. The base is nestable in an identical base, and the cover is nestable in an identical cover. The base and cover can be totally separate or connected by a living hinge or runner. To install the vent, the cover is positioned over the base and the two are nailed together to the roof surface.

1 . A one piece roof vent comprising a base member and a cover member connected together:
 said base member including a top flange, a bottom flange and side flanges, front, back and side walls extended from said flanges, and a top wall, said top wall having air flow passages;   said cover member having a top and bottom flange and a front wall, back wall and side walls, and a solid top wall;   whereby a vent in an unfolded condition is nestable within an identical vent; and   whereby said cover member folds over said base member at said living hinge and said front, back and side walls of said cover member surround and are spaced from said front, back and side walls of said base member.   
     
     
         2 . The roof vent claimed in  claim 1  wherein the base member and cover member are connected together at a living hinge. 
     
     
         3 . The roof vent claimed in  claim 1  wherein the base member and cover member are connected together by a runner. 
     
     
         4 . The roof vent claimed in  claim 1  wherein said top flange of said cover member extends farther than the top flange of said base member. 
     
     
         5 . The roof vent claimed in  claim 2  wherein said cover member and base member are connected by first and second straps, each having a living hinge. 
     
     
         6 . The roof vent claimed in  claim 5  wherein said cover member and base member are hinged together at top flanges of said base and cover. 
     
     
         7 . The roof vent claimed in  claim 1  wherein said top wall of said base has air openings which are smaller than air openings in the side walls of said cover member. 
     
     
         8 . The roof vent claimed in  claim 1  wherein said base includes a raised peripheral shoulder and wherein bottom edges of said front, back and side walls of said cover member locate adjacent said shoulder when said vent is folded. 
     
     
         9 . The roof vent claimed in  claim 1  wherein said base member and cover member are held together on a roof surface by nails extended through flanges in said base and said cover member. 
     
     
         10 . The roof vent claimed in  claim 7  wherein said vent is injection molded. 
     
     
         11 . A two piece roof vent comprising a base member and a cover member, said base member including a top flange, a bottom flange and side flanges, front wall, back wall and side walls extended from said flanges, and a top wall, said top wall having air flow passages;
 said cover member having top and bottom flanges and a front wall, back wall and side walls and a solid upper wall wherein said cover member locates over said base member and said front back and side walls of said cover member surrounded and spaced from said front, back and side walls of said base member, and wherein said side walls of said cover member include slotted air openings   whereby identical cover members are nestable in each other; and   identical base members are nestable in each other.   
     
     
         12 . The roof vent claimed in  claim 11  wherein said base and cover member are held together on a roof surface by nails extended through flanges in said base member and said cover member.