# US 7,607,425 B2 · Collapsible heating device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,607,425 B2 - Document ID: US7607425B2 - Status: Granted - Kind: B2 - Application number: 11/208,172 - Filed: 2005-08-22 - Published: 2005-12-15 - Granted: 2009-10-27 - Earliest claimed: 2002-08-02 - Assignees: Leo Donald Knight - Inventors: Leo Donald Knight - Web page: https://patentgrep.com/patent/US7607425B2 ## CPC - F24B 1/202: {specially adapted for travelling} - F24B: DOMESTIC STOVES OR RANGES FOR SOLID FUELS (for solid fuels in combination with gaseous fuels, liquid fuels or other kinds of energy supply F24C1/02); IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES ## Abstract A collapsible heating device for building a fire using solid fuel is disclosed wherein the heating device includes a canister defining a hollow cavity, the canister having an open end. A base corresponding to the canister is configured to mate with the open end so as to detachably close the open end. A perforated lower burner defining a hollow core is supported on the base. A perforated upper burner defining a hollow core is removably nestable within the lower burner. The upper burner is movable between a first collapsed position, wherein the upper burner is disposed within the lower burner, and a second operative position, wherein the upper burner is supported upright on the lower burner. When the upper burner is in the first collapsed position, the canister may mate with the base to extinguish the fire. ## Claims ### Claim 1 A heating device for containing a fire, said heating device comprising: a) a canister defining a hollow cavity, said canister having an open end and a closed end; b) a base corresponding to said canister, said base configured to mate with said open end of said canister so as to detachably close said open end; c) a perforated lower burner positioned on said base, said perforated lower burner defining a hollow core; and d) a perforated upper burner defining a hollow core, said perforated upper burner removably nestable within said hollow core of said perforated lower burner; wherein said perforated upper burner is movable between a first collapsed position and a second operative position, said perforated upper burner disposed within said hollow core of said perforated lower burner when in said first collapsed position, and said perforated upper burner being supported on said perforated lower burner when in said second operative position; and wherein when said perforated upper burner is in said first collapsed position, said canister may mate with said base to extinguish the fire. ### Claim 2 (depends on 1) The heating device of claim 1 further comprising a plurality of fingers mounted to said perforated upper burner within said hollow core of said perforated upper burner, said plurality of fingers extending horizontally from and perpendicular to said perforated upper burner to support the solid fuel an upright position. ### Claim 3 (depends on 2) The heating device of claim 2 wherein said perforated upper burner further comprises a plurality of air intake apertures of a predetermined size, said plurality of air intake apertures equally spaced apart such that an optimal amount of air may circulate through said perforated upper burner. ### Claim 4 (depends on 3) The heating device of claim 3 wherein said perforated lower burner further comprises a plurality of air intake apertures of a predetermined size, said plurality of air intake apertures equally spaced apart such that an optimal amount of air may circulate through said perforated lower burner. ### Claim 5 (depends on 4) The heating device of claim 4 wherein said perforated upper burner comprises support members mounted to a first end of said perforated upper burner, said support members configured to support said perforated upper burner on said perforated lower burner. ### Claim 6 (depends on 5) The heating device of claim 5 wherein said perforated upper burner further comprises at least one receiving means at a first and a second end of said perforated upper burner, said at least one receiving means configured to receive a handle. ### Claim 7 (depends on 6) The heating device of claim 6 wherein said perforated lower burner comprises a base plate at a first end of said perforated lower burner, said base plate supporting a lower portion of the solid fuel within said hollow core of said perforated lower burner. ### Claim 8 (depends on 7) The heating device of claim 7 wherein said base comprises a positioning means for positioning said perforated lower burner on said base. ### Claim 9 (depends on 8) The heating device of claim 8 wherein said canister comprises at least one fastening means for detachably securing said canister on said base. ### Claim 10 (depends on 9) The heating device of claim 9 further comprising a grill detachably mountable on said perforated upper burner. ### Claim 11 A solid fuel burning device comprising: a) a cylindrical canister defining a hollow cavity, said canister having an open end and a closed end; b) a base corresponding to said canister, said base configured to mate with said open end of said canister so as to detachably close said open end; c) a perforated lower burner positioned on said base, said perforated lower burner defining a hollow core and a plurality of air intake apertures of a predetermined size, said plurality of air intake apertures equally spaced apart such that an optimal amount of air may circulate through said hollow core of said perforated lower burner; d) a perforated upper burner defining a hollow core and a plurality of air intake apertures of a predetermined size, said plurality of air intake apertures equally spaced apart such that an optimal amount of air may circulate through said hollow core of said perforated upper burner, said perforated upper burner removably nestable within said hollow core of said perforated lower burner; e) support members mounted to a first end of said perforated upper burner, said support members configured to support said perforated upper burner on said perforated lower burner; and f) a plurality of fingers mounted to said perforated upper burner within said hollow core of said perforated upper burner, said plurality of fingers extending horizontally from and perpendicular to said perforated upper burner to support a solid fuel in an upright position; wherein said perforated upper burner is movable between a first collapsed position and a second operative position, said perforated upper burner disposed within said hollow core of said perforated lower burner when in said first collapsed position and said support members resting on said perforated lower burner so as to support said perforated upper burner on said perforated lower burner when in said second operative position; and wherein when said perforated upper burner is in said first collapsed position, said canister may mate with said base. ### Claim 12 (depends on 11) The heating device of claim 11 wherein said perforated upper burner further comprises at least one receiving means at a first and a second end of said perforated upper burner, said at least one receiving means configured to receive a handle. ### Claim 13 (depends on 12) The heating device of claim 12 wherein said perforated lower burner comprises a base plate at a first end of said perforated lower burner, said base plate supporting a lower portion of the solid fuel within said hollow core of said perforated lower burner. ### Claim 14 (depends on 13) The heating device of claim 13 wherein said base comprises a positioning means for positioning said perforated lower burner on said base. ### Claim 15 (depends on 14) The heating device of claim 14 wherein said canister comprises at least one fastening means for detachably securing said canister on said base. ### Claim 16 (depends on 15) The heating device of claim 15 further comprising a grill detachably mountable on said perforated upper burner. ### Claim 17 A method of extinguishing a fire burning in a heating device for containing a fire, the method comprising the steps of: a) providing a canister defining a hollow cavity, said canister having an open end and a closed end; b) providing a base corresponding to said canister, said base configured to mate with said open end of said canister so as to detachably close said open end; c) providing a perforated lower burner positioned on said base, said perforated lower burner defining a hollow core; d) providing a perforated upper burner defining a hollow core, said perforated upper burner movable between an operative position, wherein said perforated upper burner is removably supported on said perforated lower burner, and a collapsed position, wherein said perforated upper burner removably nestable within said hollow core of said perforated lower burner; e) removing said perforated upper burner from said perforated lower burner while the fire is burning; f) nesting said perforated upper burner within said hollow core of said perforated lower burner; and g) mating said open end of said canister with said base so as to inhibit flow of oxygen to the fire. ### Claim 18 (depends on 17) The method of claim 17 wherein said perforated upper burner further comprises a plurality of fingers mounted to said perforated upper burner within said hollow core of said perforated upper burner, said plurality of fingers extending horizontally from and perpendicular to said perforated upper burner to support a solid fuel in an upright position. ### Claim 19 (depends on 18) The method of claim 18 wherein said perforated upper burner further comprises a plurality of air intake apertures of a predetermined size, said plurality of air intake apertures equally spaced apart such that an optimal amount of air may circulate through said perforated upper burner. ### Claim 20 (depends on 19) The method of claim 19 wherein said perforated lower burner further comprises a plurality of air intake apertures of a predetermined size, said plurality of air intake apertures equally spaced apart such that an optimal amount of air may circulate through said perforated lower burner.