Patent US3759164A successfully refreshed from Google Patents.
US3759164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indoor-outdoor cooker
Assignee: Individual
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Filing: 1971-10-13
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Granted: 1973-09-18
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Expires: 1991-10-13
Abstract
Abstract A portable cooking apparatus for the preparation of food wherein a large cooking bowl is included as part of the apparatus. A fuel burner is centrally positioned below the bowl and within concentric baffle rings to provide a combustion and heat chamber to improve the efficiency of the burner. The curve-sided cooking bowl rests within the outer baffle ring and is spaced from this ring to obtain improved temperature control. Extendible legs are provided to position the cooking bowl at a convenient height for outdoor or indoor usage. An open mesh basket having a configuration similar to the bowl is positioned inside the bowl to facilitate the food handling. Various burner and valve combinations are included for use with the heat chamber.
Inventors
- 👤 S Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:13
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/12; A47J37/1242
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
299 words
A portable cooking apparatus for the preparation of food comprising a. a pot for holding the food during the cooking process, said pot being circular and having a continuously convexly curved exterior surface forming the bottom and side thereof to facilitate even distribution of heat across said exterior surface, b. support means adapted to support the pot on a base, c. said support means comprising at least three spaced support elements for supporting the bottom surface of the pot such that the pot may be leveled independently of the level of the base, an outer cylindrical baffle ring, an inner cylindrical baffle ring concentrically located with respect to said outer baffle ring, each of said baffle rings having a top and a bottom edge, and a gas burner including an annular burner ring concentrically located within said inner baffle ring, d. each of said baffle rings being positioned relative to said bottom surface of said pot such that continuous annular spaces are provided between the top cylindrical edge of each of said baffle rings and the bottom surface of said pot, the space between said top edge of each of said rings and the bottom surface of said pot being such that optimum burner combustion and distribution of heat across the bottom surface of the pot is obtained, and e. said burner ring being spaced a greater distance from the exterior surface of said pot than the top edges of said baffle rings but above a plane defined by the bottom edge of said inner baffle ring, forming a secondary combustion chamber defined by said burner ring, inner baffle ring and exterior surface of said pot providing improved mixing of air and gas and complete combustion, f. whereby a uniform temperature may be maintained throughout said pot during cooking.
Claim 2
Dependent Claim
299 words
A portable cooking apparatus for the preparation of food comprising a. a pot for holding the food during the cooking process, said pot being circular and having a continuously convexly curved exterior surface forming the bottom and side thereof to facilitate even distribution of heat across said exterior surface, b. support means adapted to support the pot on a base, c. said support means comprising at least three spaced support elements for supporting the bottom surface of the pot such that the pot may be leveled independently of the level of the base, an outer cylindrical baffle ring, an inner cylindrical baffle ring concentrically located with respect to said outer baffle ring, each of said baffle rings having a top and a bottom edge, and a gas burner including an annular burner ring concentrically located within said inner baffle ring, d. each of said baffle rings being positioned relative to said bottom surface of said pot such that continuous annular spaces are provided between the top cylindrical edge of each of said baffle rings and the bottom surface of said pot, the space between said top edge of each of said rings and the bottom surface of said pot being such that optimum burner combustion and distribution of heat across the bottom surface of the pot is obtained, and e. said burner ring being spaced a greater distance from the exterior surface of said pot than the top edges of said baffle rings but above a plane defined by the bottom edge of said inner baffle ring, forming a secondary combustion chamber defined by said burner ring, inner baffle ring and exterior surface of said pot providing improved mixing of air and gas and complete combustion, f. whereby a uniform temperature may be maintained throughout said pot during cooking.
Claim 3
Dependent Claim
92 words
A portable cooking apparatus as defined in claim 1 wherein the burner includes an inlet fuel-air mixing chamber connected to a central distribution chamber, and a plurality of hollow support conduits extending radially from said central distribution chamber, said annual burner ring being supported on said support conduits and having at least one outlet aperture for passage of the fuel-air mixTure, said annular ring being concentrically positioned above the distribution chamber whereby the flow of gas-air mixture from the distribution chamber through the support conduits to the annular burner ring is uniform.
Claim 4
Dependent Claim
70 words
A portable cooking apparatus as defined in claim 2 wherein the fuel-air mixing chamber contains at least three adjustable openings for controlling the volume of air entering the mixing chamber whereby improved mixing of air and gas is obtained and the efficiency of the burner is improved, and said support conduits are equally spaced around the distribution chamber to provide an even distribution of gases to the annular burner ring.
Claim 5
Dependent Claim
44 words
A portable cooking apparatus as defined in claim 1 wherein the annular burner ring outlet aperture is a continuous narrow slot extending around the annular upper surface of the burner ring to provide an annularly shaped continuous sheet of flame for uniform heat distribution.
Claim 6
Dependent Claim
47 words
A portable cooking apparatus as defined in claim 2 wherein the burner includes a main fuel-air burner connected to a fuel control valve and a pilot flame burner connected to a pilot valve and said control valve and said pilot valve are combined in an integral housing.
Claim 7
Dependent Claim
35 words
A portable cooking apparatus as defined in claim 1 further comprising an open mesh basket shaped to fit within the pot and adapted to facilitate the handling and removal of the food from the pot.
Claim 8
Dependent Claim
45 words
A portable cooking apparatus as defined in claim 4 wherein the diameter of said outer baffle ring is about 90 percent of the diameter of the pot and the diameter of said inner baffle ring is about two-thirds of the diameter of the outer ring.
Claim 9
Dependent Claim
57 words
A portable cooking apparatus as defined in claim 7 wherein the axial lengths between the top and bottom edges of said outer and inner baffle rings are about equal and the top edge of the said inner baffle ring defines a plane passing through said outer baffle ring about mid-way between the top and bottom edges thereof.
Claim 10
Dependent Claim
30 words
A portable cooking apparatus as defined in claim 1 wherein said support means further comprises at least three legs, one leg extending generally downwardly from each of said support elements.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |