Vent for tile roof

Abstract

A primary vent fitting for a roof vent is made of a single stamped component which provides superior protection against water ingress. The fitting includes a flared portion at the rear/upper edge of an upstanding flange. The flared portion cooperates with the flange to create a water diversion channel that prevents water ingress through the airflow aperture defined by the fitting. Additionally, the fitting provides a rectangular opening in its base flange that corresponds to a typical rectangular cutout in roof decking, and a transition that allows air to flow through the entirety of the rectangular opening and through the stadium-shaped aperture defined by the upstanding flange.

What is claimed is: 
     
         1 . A primary vent fitting configured for use in a roof vent, the fitting comprising:
 a base flange configured to attach to decking of a roof; and   an upstanding flange extending upwardly from the base flange, the upstanding flange including a rear/upper portion, a front/lower portion, and left and right portions respectively connecting left and right ends of the rear/upper portion and the front/lower portion, the upstanding flange encircling an aperture formed in the primary fitting, wherein:   the rear/upper portion of the upstanding flange includes a flared portion, and   the base flange, the upstanding flange and the flared portion are all formed as a single, monolithic piece of material.   
     
     
         2 . The primary vent fitting of  claim 1 , wherein:
 the base flange has a rectangular profile, and   the upstanding flange has a stadium profile.   
     
     
         3 . The primary vent fitting of  claim 1 , wherein the upstanding flange extends generally perpendicular to the base flange. 
     
     
         4 . The primary vent fitting of  claim 3 , wherein the upstanding flange defines a slightly obtuse angle between 91 and 105 degrees with respect to a surrounding surface of the base flange. 
     
     
         5 . The primary vent fitting of  claim 4 , wherein the flared portion of the rear/upper portion of the upstanding flange defines an acute angle with the surrounding surface of the base flange, such that the slightly obtuse angle cooperates with the acute angle to define a water channel. 
     
     
         6 . The primary vent fitting of  claim 1 , further comprising a transition extending upwardly from the base flange to meet a lower edge of the upstanding flange, the transition defining a rectangular profile circumscribing the upstanding flange and contained within the perimeter of the base flange. 
     
     
         7 . The primary vent fitting of  claim 6 , wherein the transition defines an obtuse angle with respect to a surrounding surface of the base flange. 
     
     
         8 . The primary vent fitting of  claim 6 , wherein the transition comprises a left transition portion adjacent to the left portion of the upstanding flange and an opposing right portion adjacent to the right portion of the upstanding flange. 
     
     
         9 . The primary vent fitting of  claim 6 , wherein the rectangular profile of the transition defines a rectangular airflow opening sized to correspond with a rectangular cutout in the decking of the roof. 
     
     
         10 . The primary vent fitting of  claim 1 , wherein the front/lower portion and the rear/upper portion of the upstanding flange form straight sides of a stadium profile, and the left and right portions of the upstanding flange form arcuate sides of the stadium profile, the vent fitting further comprising:
 a left transition portion extending upwardly from the base flange to meet a lower edge of the left portion of the upstanding flange; and   a right transition portion extending upwardly from the base flange to meet a lower edge of the right portion of the upstanding flange,   the left transition, the right transition, the front/lower portion and the rear/upper portion all cooperating to define a rectangular profile circumscribing the upstanding flange and contained within the perimeter of the base flange.   
     
     
         11 . The primary vent fitting of  claim 1 , wherein the primary vent fitting is a stamped component. 
     
     
         12 . A primary vent fitting configured for use in a roof vent, the fitting comprising:
 a base flange configured to attach to decking of a roof; and   an upstanding flange extending upwardly from the base flange, the upstanding flange including a rear/upper portion, a front/lower portion, and left and right portions respectively connecting left and right ends of the rear/upper portion and the front/lower portion, the upstanding flange encircling an aperture formed in the primary fitting;   a left transition portion extending upwardly from the base flange to meet a lower edge of the left portion of the upstanding flange; and   a right transition portion extending upwardly from the base flange to meet a lower edge of the right portion of the upstanding flange,   the left transition, the right transition, the front/lower portion and the rear/upper portion all cooperating to define a rectangular profile circumscribing the upstanding flange and contained within the perimeter of the base flange.   
     
     
         13 . The primary vent fitting of  claim 12 , wherein the rectangular airflow opening is sized to correspond with a rectangular cutout in the decking of the roof. 
     
     
         14 . The primary vent fitting of  claim 12 , wherein the rear/upper portion of the upstanding flange includes a flared portion. 
     
     
         15 . The primary vent fitting of  claim 14 , wherein the base flange, the upstanding flange and the flared portion are all formed as a single, monolithic piece of material. 
     
     
         16 . The primary vent fitting of  claim 15 , wherein the primary vent fitting is a stamped component. 
     
     
         17 . The primary vent fitting of  claim 12 , wherein:
 the base flange has a rectangular profile, and   the upstanding flange has a stadium profile.   
     
     
         18 . The primary vent fitting of  claim 12 , wherein the upstanding flange extends generally perpendicular to the base flange. 
     
     
         19 . The primary vent fitting of  claim 18 , wherein the upstanding flange defines a slightly obtuse angle between 91 and 105 degrees with respect to a surrounding surface of the base flange. 
     
     
         20 . The primary vent fitting of  claim 19 , wherein:
 wherein the rear/upper portion of the upstanding flange includes a flared portion, and   the flared portion defines an acute angle with the surrounding surface of the base flange, such that the slightly obtuse angle cooperates with the acute angle to define a water channel.