Heating system using outside air

Claim 2

A heating system for heating a building comprising a furnace having an inlet and an outlet, a flue pipe leading from said outlet to a first exterior of the building for escape of exhaust gases, a draft opening in said flue pipe, an air intake pipe coupled to said inlet for receiving air into said furnace, first and second pipes respectively having one end thereof coupled to a second exterior of the building, first coupling means interconnecting the other end of said first pipe to said draft opening for allowing air outside of said building to provide a draft to said flue pipe, a second coupling means interconnecting the other end of said second pipe to said air intake pipe for allowing air outside of said building to be used as the air supply for said furnace, and at least one of said coupling means including safety means for admitting air from inside the building when the air flow from outside the building becomes restricted.

Claim 3

A heating system as in claim 1, further comprising air duct means positioned on said building for allowing outside air to pass into the building, and wherein both said first and second pipes are connected to said air duct means.

Claim 4

A heating system as in claim 1, wherein said first and second coupling means are substantially identical.

Claim 5

A heating system as in claim 1, wherein said one of said coupling means includes an opening interconnecting the one coupling means to an interior of the building, said safety means including a plate pivotally covering said opening, and biasing means maintaining said plate in a closed position over said opening.

Claim 6

A heating system for heating a building comprising a furnace having an inlet and an outlet, a flue pipe leading from said outlet to a first exterior of the building for escape of exhaust gases, a draft opening in said flue pipe, an air intake pipe coupled to said inlet for receiving air into said furnace, first and second pipes respectively having one end thereof coupled to a second exterior of the building, first coupling means interconnecting the other end of said first pipe to said draft opening for allowing air outside of said building to provide a draft to said flue pipe, a second coupling means interconnecting the other end of said second pipe to said air intake pipe for allowing air outside of said building to be used as the air supply for said furnace, and at least one of said coupling means including a housing, a first aperture in a first portion of said housing capable of receiving one pipe, and a second aperture in a second portion of said housing capable of receiving another pipe.

Claim 7

A heating system for heating a building comprising a furnace having an inlet and an outlet, a flue pipe leading from said outlet to a first exterior of the building for escape of exhaust gases, a draft opening in said flue pipe, an air intake pipe coupled to said inlet for receiving air into said furnace, first and second pipes respectively having one end thereof coupled to a second exterior of the building, first coupling means interconnecting the other end of said first pipe to said draft opening for allowing air outside of said building to provide a draft to said flue pipe, a second coupling means interconnecting the other end of said second pipe to said air intake pipe for allowing air outside of said building to be used as the air supply for said furnace, and at least one of said coupling means including a housing, a first aperture in a first portion of said housing capable of receiving one pipe, and a second aperture in a second portion of said housing capable of receiving another pipe.

Claim 8

A heating system as in claim 5, wherein said first and second coupling means are substantially identical.

Claim 9

A heating system as in claim 5, wherein said housing has a substantially rectangular configuration, said first portion being a top of said housing, and said second portion being a sidewall of said housing.

Claim 10

A heating system as in claim 5, wherein each of said apertures includes a neck portion extending outwardly from said housing for respectively coupling to the pipes.

Claim 11

A heating system as in claim 5, further comprising safety means for admitting air from inside the building when the air flow from outside the building becomes restricted.

Claim 12

A heating system as in claim 9, wherein said housing includes an opening in one wall thereof, said safety means including a plate pivotally covering said opening, and biasing means maintaining said plate in a closed position covering said opening.

Claim 13

A heating system as in claim 10, wherein said biasing means is a normally compressed spring.

Claim 14

A heating system as in claim 5, further comprising air duct means positioned on said building for allowing outside air to pass into the building, and wherein both said first and second pipes are connected to said air duct means.