Vent for exhaust system

Abstract

A vent for venting of exhaust from a building comprising at least one inlet for receiving the exhaust from the building into the vent; at least one valve for assisting in maintaining the unidirectional movement of exhaust from inside to outside the building; and an outlet for allowing the release of the exhaust from the vent; wherein the inlet meets the vent at a forward angle such that the exhaust flows towards the outlet and acts to reduce friction of the exhaust against the vent.

What is claimed is: 
     
         1 . A vent for venting of exhaust from a building comprising:
 at least one inlet for receiving the exhaust from the building into the vent;   at least one valve for assisting in maintaining the unidirectional movement of exhaust from inside to outside the building; and   an outlet for allowing the release of the exhaust from the vent;   wherein the inlet meets the vent at a forward angle such that the exhaust flows towards the outlet and acts to reduce friction of the exhaust against the vent.   
     
     
         2 . A vent according to  claim 1 , wherein the angle at which the inlet meets the vent is between about 20 and 50 degrees. 
     
     
         3 . A vent according to  claim 2 , wherein the angle at which the inlet meets the vent is about 35 degrees. 
     
     
         4 . A vent according to  claim 1 , wherein an angled spigot is connected to an entry to the inlet. 
     
     
         5 . A vent according to claim I, wherein a default closed position of the valve is maintained through the force of gravity. 
     
     
         6 . A vent according to  claim 1 , wherein the vent comprises a plurality of inlets and a divider disposed between the inlets for providing a physical barrier between respective inlets. 
     
     
         7 . A vent according to  claim 1 , wherein a rear wall of the vent is angled outwardly from a base to a top of the vent. 
     
     
         8 . A vent according to  claim 1 , wherein the outlet is covered with a screen for allowing exhaust to be expelled from the vent while minimising the ingress of foreign articles to the vent. 
     
     
         9 . A vent according to  claim 8 , wherein the screen is constructed of cinder mesh for the prevention of ingress of embers in a fire situation. 
     
     
         10 . A vent according to  claim 8 , further comprising insulation isolating the screen from other material of the vent at points of contact between the two. 
     
     
         11 . A vent according to  claim 1 , further comprising fingers for complementary attachment of the vent to a corrugated building surface. 
     
     
         12 . A vent according to  claim 1 , further comprising a malleable skirt for moulding over a surface upon which the vent is mounted. 
     
     
         13 . A vent according to  claim 1 , wherein a shell of the vent is formed of a box and a shroud. 
     
     
         14 . A vent according to  claim 13 , wherein the box and the shroud are each formed of a solitary piece punched from sheet material, then folded and fixed into its finished shape. 
     
     
         15 . A method of venting exhaust from a building comprising the use of a vent according to  claim 1 .