US4716820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baked goods cooking apparatus
Assignee: Marshall Air Systems Inc
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Filing: 1981-05-15
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Granted: 1988-01-05
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Expires: 2001-05-15
Abstract
Abstract A cooking apparatus and method, particularly for baked goods foodstuffs such as pizza and the like, in which a foodstuff conveyor extends through a cooking zone defined within a housing. The cooking zone is heated by heat sources emitting infrared radiation and convectively heating air. More uniform cooking is accomplished by tempering the effect of the heat sources by interrupting reflection of infrared radiation and agitating air.
Inventors
- 👤 Robert M. Stuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:06
CPC Classifications
A; A21; A21B; A21B1/00; A21B1/42; A21B1/48; A21B1/02; A21B1/24; A21B1/26; A21B2/00; A23; A23B; A23B2/00; A23B2/05; A23B2/055; A23B2/20; A23B2/22; A23L; A23L5/00; A23L5/10; A23L5/15; A47; A47J; A47J37/00; A47J37/04; A47J37/044
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
133 words
A cooking apparatus comprising: housing means for enclosing a cooking zone, endless foodstuff chain conveyor means mounted to extend through said cooking zone and for movement along a closed path of travel having upper and lower runs, heating means mounted in said housing means for heating said cooking zone by emission of infrared radiation and by convective heating of air and for cooking foodstuff conveyed therethrough along said upper run of said conveyor means, and tempering means mounted in said housing means and extending into said cooking zone for stroboscopically interrupting reflection within said housing means of infrared radiation from said heating means and for agitating air in said cooking zone so as to facilitate more uniform cooking of foodstuff conveyed through said cooking zone along said upper run of said conveyor means.
Claim 2
Dependent Claim
133 words
A cooking apparatus comprising: housing means for enclosing a cooking zone, endless foodstuff chain conveyor means mounted to extend through said cooking zone and for movement along a closed path of travel having upper and lower runs, heating means mounted in said housing means for heating said cooking zone by emission of infrared radiation and by convective heating of air and for cooking foodstuff conveyed therethrough along said upper run of said conveyor means, and tempering means mounted in said housing means and extending into said cooking zone for stroboscopically interrupting reflection within said housing means of infrared radiation from said heating means and for agitating air in said cooking zone so as to facilitate more uniform cooking of foodstuff conveyed through said cooking zone along said upper run of said conveyor means.
Claim 3
Dependent Claim
48 words
Apparatus according to claim 1 wherein said heating means comprises a plurality of heat sources mounted beneath said conveyor means and within said cooking zone for directing infrared radiation toward foodstuff supported on and moving with said conveyor means while heating air within said cooking zone by convection.
Claim 4
Dependent Claim
57 words
Apparatus according to one of claims 1 or 2 wherein said heating means comprises at least one heat source mounted above said conveyor means and within said cooking zone for directing infrared radiation downwardly toward the upper surface of foodstuff supported on and moving with said conveyor means while heating air within said cooking zone by convection.
Claim 5
Dependent Claim
56 words
Apparatus according to claim 1 wherein said heating means comprises a plurality of fluid fuel burner heat sources mounted above and below said conveyor means and within said cooking zone for directing infrared radiation downwardly and upwardly toward foodstuff supported on and moving with said conveyor means while heating air within said cooking zone by convection.
Claim 6
Dependent Claim
30 words
Apparatus according to claim 1 wherein said tempering means comprises fan means having impeller blades mounted within said cooking zone for rotation, and drive means for rotating said fan means.
Claim 7
Dependent Claim
38 words
Apparatus according to claim 5 wherein said drive means for rotating said fan means comprises an electrical motor and control circuit means electrically connected with said electrical motor for varying the speed of rotation of said fan means.
Claim 8
Dependent Claim
39 words
Apparatus according to claim 6 wherein said control circuit means accomplishes variation in the rotational speed of said fan means in a range of from about forty (40) revolutions per minute to about two hundred (200) revolutions per minute.
Claim 9
Dependent Claim
154 words
Apparatus for cooking baked goods such as pizza and the like and comprising: housing means for enclosing a cooking zone, conveyor means mounted in said housing means for extending through said cooking zone and for moving foodstuff through said cooking zone, a plurality of heat source means mounted in said housing means above and below said conveyor means and within said cooking zone for directing infrared radiation downwardly and upwardly toward foodstuff supported on said conveyor means and moved thereby through said cooking zone, said heat source means also heating air within said cooking zone by convection, and tempering means effective for facilitating more uniform cooking of foodstuff conveyed through said cooking zone and comprising fan means having impeller blades mounted for rotation within said cooking zone, and variable speed drive means for rotating said fan means for agitating air in said cooking zone while interrupting reflection of infrared radiation from said heating means.
Claim 10
Dependent Claim
154 words
Apparatus for cooking baked goods such as pizza and the like and comprising: housing means for enclosing a cooking zone, conveyor means mounted in said housing means for extending through said cooking zone and for moving foodstuff through said cooking zone, a plurality of heat source means mounted in said housing means above and below said conveyor means and within said cooking zone for directing infrared radiation downwardly and upwardly toward foodstuff supported on said conveyor means and moved thereby through said cooking zone, said heat source means also heating air within said cooking zone by convection, and tempering means effective for facilitating more uniform cooking of foodstuff conveyed through said cooking zone and comprising fan means having impeller blades mounted for rotation within said cooking zone, and variable speed drive means for rotating said fan means for agitating air in said cooking zone while interrupting reflection of infrared radiation from said heating means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |