US3827423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary cellular-structured cooking fire apparatus
Assignee: Individual
•
Filing: 1972-07-05
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Granted: 1974-08-06
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Expires: 1992-07-05
Abstract
Abstract A unitary cellular structured cooking-fire appliance having dual compacted volumes of trap rock separated by a convection chamber is positioned broadside over a primary source of heat for cooking the edibles. The upper portion or cell of the dual compacted volumes of trap rock provides both a substantially uniform temperature cooking surface and a non-combustible collector and absorber of liquid animal fats and the lower spaced apart portion or cell of trap rock is capable of being heated to incandescence, is positioned over the primary source of heat for acting as a distributor of the heat generated from the primary source of heat to the whole area of the cooking surface.
Inventors
- 👤 W Bolitho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:08
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/07; A47J37/0704
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
133 words
An unitary cellular structured cooking appliance for use over a source of heat, said cooking appliance comprising: four substantially parallel spaced apart substantially perforated members, means enclosing the perimeter of said perforated members forming a unitary integral structure, said means cooperating with said members defining three chambers in a stacked overlying relationship having two outside chambers with a convection chamber therebetween and a first and second compacted volume of trap rock bodies contained respectively in said two outside chambers, wherein said outside chamber nearest the source of heat is capable of being heated to incandescence for the distribution of heat by radiation and convection across said convection chamber to the other outside chamber to be dispersed therein for supplying a uniform heating surface on the outside perforated member of said other outside chamber.
Claim 2
Dependent Claim
133 words
An unitary cellular structured cooking appliance for use over a source of heat, said cooking appliance comprising: four substantially parallel spaced apart substantially perforated members, means enclosing the perimeter of said perforated members forming a unitary integral structure, said means cooperating with said members defining three chambers in a stacked overlying relationship having two outside chambers with a convection chamber therebetween and a first and second compacted volume of trap rock bodies contained respectively in said two outside chambers, wherein said outside chamber nearest the source of heat is capable of being heated to incandescence for the distribution of heat by radiation and convection across said convection chamber to the other outside chamber to be dispersed therein for supplying a uniform heating surface on the outside perforated member of said other outside chamber.
Claim 3
Dependent Claim
36 words
The cooking appliance according to claim 1 wherein the outside members comprises a plurality of parallel spaced apart tubular members extending in the direction of the width of said members forming a surface adaptable for grilling.
Claim 4
Dependent Claim
23 words
The cooking appliance according to claim 1 wherein the depth of said convection chamber is less than the depth of said outside chambers.
References Cited (Backward Citations)
US2746378A
Cited
US3638634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |