Roof vent

Abstract

A roof vent comprises a lower member and a vent cap. The lower member comprises a base portion configured to be secured over an opening of a roof cover, a closed wall structure extending upward from the base portion, and a screen covering a vent-opening defined at an upper end of the wall structure. The vent cap is secured to the wall structure and comprises a cover portion extending over the vent-opening and the screen, and a closed flange extending downward from a peripheral edge of the cover portion. The cover portion is configured to prevent the flow of water from above the cover portion into the vent-opening. The closed flange surrounds, and extends below the upper end of, the wall structure, such that a gap is formed between the closed flange and the wall structure. In some embodiments, the cover portion of the vent cap is translucent to admit light through the roof. In some embodiments, one or more baffles extend transversely from the wall structure, to further prevent the ingress of water, ice, hail, debris, etc. through the vent. In some embodiments, the screen has a plurality of screen-openings, each of the screen-openings having a largest width between 0.125-0.25 inch. In some embodiments, the screen comprises first and second sets of substantially parallel elongated cords, the two sets of cords being oriented at an angle with respect to each other.

1 . A roof vent comprising: 
 a lower member comprising: 
 a base portion configured to be secured over an opening in a roof cover;  
 a closed wall structure extending upward from the base portion, the wall structure defining a vent-opening at an upper end of the wall structure;  
 one or more baffles extending transversely from the wall structure; and  
 a screen covering the vent-opening; and  
   a vent cap secured to the wall structure, the vent cap comprising: 
 a cover portion extending over the vent-opening and the screen, the cover portion configured to prevent the flow of water from above the cover portion into the vent-opening; and  
 a closed flange extending downward from the cover portion, the closed flange surrounding the wall structure and extending below the upper end of the wall structure, such that a gap is formed between the closed flange and the one or more baffles.  
   
   
   
       2 . The roof vent of  claim 1 , wherein the vent cap is configured to be selectively attached to and detached from the wall structure.  
   
   
       3 . The roof vent of  claim 1 , wherein the closed flange extends downward from a peripheral edge of the cover portion.  
   
   
       4 . The roof vent of  claim 1 , wherein the wall structure comprises a plurality of substantially straight walls, the one or more baffles comprising a plurality of baffles, each of the baffles extending along substantially the entirety of one of the straight walls.  
   
   
       5 . The roof vent of  claim 1 , wherein the wall structure comprises four substantially flat walls, three of the walls extending substantially at right angles from the base portion and each having a baffle extending transversely therefrom, a fourth of the walls being sloped with respect to the base portion and not having a baffle extending therefrom.  
   
   
       6 . A roof vent comprising: 
 a lower member comprising: 
 a base portion configured to be secured over an opening in a roof cover;  
 a closed wall structure extending upward from the base portion, the wall structure defining an vent-opening at an upper end of the wall structure; and  
 a screen covering the vent-opening; and  
   a vent cap secured to the wall structure, the vent cap configured to be selectively attached to and detached from the wall structure, the vent cap comprising: 
 a translucent cover portion extending over the vent-opening and the screen, the cover portion configured to prevent the flow of water from above the cover portion into the vent-opening; and  
 a substantially opaque, closed flange extending downward from a peripheral edge of the cover portion, the closed flange surrounding the wall structure and extending below the upper end of the wall structure, such that a gap is formed between the closed flange and the wall structure.  
   
   
   
       7 . The roof vent of  claim 6 , wherein at least a portion of the closed flange is translucent.  
   
   
       8 . The roof vent of  claim 6 , wherein at least a portion of the lower member is translucent.  
   
   
       9 . A roof vent comprising: 
 a lower member comprising: 
 a base portion configured to be secured over an opening in a roof cover;  
 a closed wall structure extending upward from the base portion, the wall structure defining a vent-opening at an upper end of the wall structure; and  
 a screen covering the vent-opening, the screen having a plurality of screen-openings, each of the screen-openings having a largest width between 0.125-0.25 inch; and  
   a vent cap secured to the wall structure, the vent cap comprising: 
 a cover portion extending over the vent-opening and the screen, the cover portion configured to prevent the flow of water from above the cover portion into the vent-opening; and  
 a closed flange extending downward from the cover portion, the closed flange surrounding the wall structure and extending below the upper end of the wall structure, such that a gap is formed between the closed flange and the wall structure.  
   
   
   
       10 . The roof vent of  claim 9 , wherein the vent cap is configured to be selectively attached to and detached from the wall structure.  
   
   
       11 . The roof vent of  claim 9 , wherein the closed flange extends downward from a peripheral edge of the cover portion.  
   
   
       12 . The roof vent of  claim 9 , wherein the screen comprises a first set of substantially parallel elongated cords and a second set of substantially parallel elongated cords, the first and second sets of cords being oriented at an angle with respect to each other.  
   
   
       13 . The roof vent of  claim 12 , wherein the angle is about 90°.  
   
   
       14 . The roof vent of  claim 12 , wherein the first and second sets of cords intersect one another and are integrally formed with each other.  
   
   
       15 . The roof vent of  claim 9 , wherein the screen is integrally formed with the wall structure.