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US4432335A Expired / Lapsed US ⏱️ 0.0 years remaining

Stove construction for achieving complete fuel combustion

Assignee: Individual
•
Filing: 1981-12-03
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Granted: 1984-02-21
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Expires: 2001-12-03
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Abstract

Abstract A stove apparatus which is designed to achieve relatively complete combustion of solid fuel such as wood or coal. A combustion chamber is defined by a connected wall housing and includes a primary flue opening at an upper rear portion thereof. Primary combustion air enters into the forward portion of the combustion chamber and the resultant combustion gases are deflected from normally passing to the chimney via the primary exit flue by means of a downwardly extending baffle which creates an increased temperature exit zone adjacent thereto. A device for introducing secondary combustion directly into said exit zone is provided so as to insure more complete combustion and reduce the amount of tars, i.e., creosote, produced in the combustion process. In addition, an unique device for regulating the amount and the combustion chamber is provided.

Inventors

  • 👤 Peter Kilham

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 13:11
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/02; F24B5/00; F24B5/02; F24B5/021; F24B5/026

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 257 words
A heating stove for the efficient burning of a suitable fuel such as coal or wood comprising, a stove housing defining a combustion chamber wherein combustion gases from said burning pass upwardly through a primary flue opening positioned through said housing at an upper rear portion of said chamber, a baffle disposed in said chamber at a position forward and below said primary flue opening so as to downwardly deflect said combustion gases from upper parts of said chamber into an exit zone adjacent said baffle and located within said chamber, primary draft means for introducing primary combustion air into said chamber and means for introducing secondary combustion air directly into said exit zone so as to more completely burn combustible material in said combustion gases to as to in turn reduce creosote therein and to raise the combustion efficiency of said stove, said housing including top, bottom, front, rear and connecting walls which define said combustion chamber, said primary flue opening disposed in said top wall at a position adjacent said rear wall, said primary draft means including a plurality of separate draft tubes downwardly extending from the forward portion of said top wall into said combustion chamber for directing primary combustion air downwardly towards the housing bottom wall and the base of the burning fuel supported thereby, including a swivable plate mounted on said top wall and movable to progressively cover the tops of one or more of said tubes so as to regulate the amount of primary combustion air passing into said combustion chamber.
Claim 2
Dependent Claim 257 words
A heating stove for the efficient burning of a suitable fuel such as coal or wood comprising, a stove housing defining a combustion chamber wherein combustion gases from said burning pass upwardly through a primary flue opening positioned through said housing at an upper rear portion of said chamber, a baffle disposed in said chamber at a position forward and below said primary flue opening so as to downwardly deflect said combustion gases from upper parts of said chamber into an exit zone adjacent said baffle and located within said chamber, primary draft means for introducing primary combustion air into said chamber and means for introducing secondary combustion air directly into said exit zone so as to more completely burn combustible material in said combustion gases to as to in turn reduce creosote therein and to raise the combustion efficiency of said stove, said housing including top, bottom, front, rear and connecting walls which define said combustion chamber, said primary flue opening disposed in said top wall at a position adjacent said rear wall, said primary draft means including a plurality of separate draft tubes downwardly extending from the forward portion of said top wall into said combustion chamber for directing primary combustion air downwardly towards the housing bottom wall and the base of the burning fuel supported thereby, including a swivable plate mounted on said top wall and movable to progressively cover the tops of one or more of said tubes so as to regulate the amount of primary combustion air passing into said combustion chamber.
Claim 3
Dependent Claim 240 words
A heating stove for the efficient burning of a suitable fuel such as coal or wood comprising, a stove housing defining a combustion chamber wherein combustion gases from said burning pass upwardly through a primary flue opening positioned through said housing at an upper rear portion of said chamber, a baffle disposed in said chamber at a position forward and below said primary flue opening so as to downwardly deflect said combustion gases from upper parts of said chamber into an exit zone adjacent said baffle and located within said chamber, primary draft means for introducing primary combustion air into said chamber, and means for introducing secondary combustion air directly into said exit zone so as to more completely burn combustible material in said combustion gases so as to in turn reduce creosote therein and to raise the combustion efficiency of said stove, said primary draft means disposed through an upper forward portion of said housing, said primary draft means including a plurality of separate draft tubes downwardly extending from the forward portion of said top wall into said combustion chamber for directing primary combustion air downwardly towards the housing bottom wall and the base of the burning fuel supported thereby, including a swivable plate mounted on said top wall and movable to progressively cover the tops of of one or more of said tubes so as to regulate the amount of primary combustion air passing into said combustion chamber.
Claim 4
Dependent Claim 240 words
A heating stove for the efficient burning of a suitable fuel such as coal or wood comprising, a stove housing defining a combustion chamber wherein combustion gases from said burning pass upwardly through a primary flue opening positioned through said housing at an upper rear portion of said chamber, a baffle disposed in said chamber at a position forward and below said primary flue opening so as to downwardly deflect said combustion gases from upper parts of said chamber into an exit zone adjacent said baffle and located within said chamber, primary draft means for introducing primary combustion air into said chamber, and means for introducing secondary combustion air directly into said exit zone so as to more completely burn combustible material in said combustion gases so as to in turn reduce creosote therein and to raise the combustion efficiency of said stove, said primary draft means disposed through an upper forward portion of said housing, said primary draft means including a plurality of separate draft tubes downwardly extending from the forward portion of said top wall into said combustion chamber for directing primary combustion air downwardly towards the housing bottom wall and the base of the burning fuel supported thereby, including a swivable plate mounted on said top wall and movable to progressively cover the tops of of one or more of said tubes so as to regulate the amount of primary combustion air passing into said combustion chamber.

References Cited (Backward Citations)

US742161A Cited
US3168088A Cited
US4192285A Cited
US4359040A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-02-20 1987-08-22 1988-02-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-02-20 1991-08-22 1992-02-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-02-20 1995-08-22 1996-02-21 $7700.00 Window Closed / Lapsed

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