Dormer roof ventilator and method thereof

Abstract

A semiconical shaped roof ventilator comprising a base frame, a cover integrally formed on the base frame and upwardly extending therefrom, the base frame and cover capable of being efficiently manufactured from a single piece of material so as to have improved durability, and wherein the roof ventilator has improved air ventilation due to its semiconical shape.

1 . A roof ventilator comprising:
 a base frame, said base frame having an opening therein for communicating with a corresponding opening in a roof;   a cover integrally formed on said base frame and upwardly extending at an acute angle therefrom;   said cover having a semiconical shape defined by a semicircular frontal opening that tapers into a back end, said back end being contiguous with said rear portion of said base frame, whereby said semiconical shape improves airflow in said roof ventilator:   a flange extending along a peripheral edge of said frontal opening;   a plurality of slats extending across said frontal opening of said cover, said plurality of slats being attached to said flange;   wherein said roof ventilator is capable ventilating air from said roof.   
   
   
       2 . The roof ventilator of  claim 1  wherein said base frame includes a front end, a rear portion, two side portions, said portions together forming a trapezoidal frame. 
   
   
       3 . (cance 1 ed) 
   
   
       4 . The roof ventilator of  claim 2  wherein said cover having a semiconical shape defined by a semicircular frontal opening that tapers into a back end, wherein said back curves downwardly to form a rounded shape. 
   
   
       5 . The roof ventilator of  claim 2  wherein said cover has a semiconical shape defined by a semicircular frontal opening that tapers into a point, said semicircular opening proximately located to said front end of said base frame and said point centrally located in said rear portion of said base frame, whereby said semiconical shape improves airflow in said roof ventilator. 
   
   
       6 . The roof ventilator of  claim 1  including at least three parallel slats. 
   
   
       7 . The roof ventilator of  claim 1  wherein each slat in said plurality of slats includes a curvilinear blade portion to improve airflow. 
   
   
       8 . The roof ventilator of  claim 1  wherein at least one slat in said plurality of slats include at least one aperture therein for improved ventilation. 
   
   
       9 . The roof ventilator of  claim 1  wherein at least one slat in said plurality of slats includes a plurality of apertures therein for improved ventilation. 
   
   
       10 . (canceled) 
   
   
       11 . The roof ventilator of  claim 1  further including a screen mounted to said cover, said screen being mounted behind said plurality of slats. 
   
   
       12 . A method of manufacturing a roof ventilator comprising the steps of:
 forming a frame base;   forming a cover integral to said frame base, said cover having a frontal opening;   wherein said base frame and said cover are formed from a single piece of material.   
   
   
       13 . A method of manufacturing a roof ventilator according to  claim 12  further comprising the steps of:
 forming a plurality of slats;   attaching said plurality of slats to said frontal opening of said cover.   
   
   
       14 . A method of manufacturing a roof ventilator according to  claim 12 , wherein forming said frame base includes the steps of forming from a single piece of material a rear portion and two side portions, said portions together forming a trapezoidal frame. 
   
   
       15 . A method of manufacturing a roof ventilator according to  claim 12  wherein said cover is formed to have a semiconical shape from a single piece of material. 
   
   
       16 . A method of manufacturing a roof ventilator according to  claim 13  wherein said plurality of slats are formed from a single piece of material. 
   
   
       17 . A roof ventilator including a base frame, said base frame forming an opening therein for communicating with a corresponding opening in a roof; a cover integrally formed on said base frame, said cover having a frontal opening; a flange extending along a peripheral edge of said frontal opening; a plurality of slats extending across said frontal opening of said cover, said plurality of slats attached to said flange; a screen mounted to said cover, said screen mounted behind said plurality of slats; the improvement comprising said cover being formed integrally with said base frame from a single piece of material.