US5352865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Programmable load compensation method and apparatus for use in a food oven
Assignee: Henny Penny Corp
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Filing: 1992-11-09
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Granted: 1994-10-04
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Expires: 2012-11-09
Abstract
Abstract A method and apparatus is disclosed which automatically adjusts the on-time of preferably quartz lamp heating elements in an oven having both quartz lamp and electric heating elements. In such an oven having dual heating elements, the temperature of the oven's cavity increases when numerous food items (loads) are rapidly cooked in succession. The present invention allows a dual heating element oven to automatically compensate for these increases in temperature by preferably shortening a predetermined on-time of the quartz bulbs. The on-time is continuously compensated using a microcomputer, dependent upon the current oven temperature. The microcomputer preferably uses at least two clocks to shorten the predetermined on-time of the quartz bulbs.
Inventors
- 👤 Douglas A. Burkett
- 👤 Gary L. Mercer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:17
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/08; F24C7/087; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1951
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A rotisserie oven for cooking food comprising heating means for heating food located in the rotisserie oven; air temperature sensing means for sensing the temperature of air in said rotisserie oven; and, control means, responsive to the air temperature sensing means for selectively controlling said heating means, wherein said control means is programmable with a predetermined cook time, a predetermined cook temperature and a load compensation factor; wherein said control means further comprises means for determining an actual cook time derived from said predetermined cook time, the difference between the sensed temperature of the air in said rotisserie oven and the predetermined cook temperature, and the load compensation factor said heating means heating said food for said actual cook time.
Claim 2
Dependent Claim
120 words
A rotisserie oven for cooking food comprising heating means for heating food located in the rotisserie oven; air temperature sensing means for sensing the temperature of air in said rotisserie oven; and, control means, responsive to the air temperature sensing means for selectively controlling said heating means, wherein said control means is programmable with a predetermined cook time, a predetermined cook temperature and a load compensation factor; wherein said control means further comprises means for determining an actual cook time derived from said predetermined cook time, the difference between the sensed temperature of the air in said rotisserie oven and the predetermined cook temperature, and the load compensation factor said heating means heating said food for said actual cook time.
Claim 3
Dependent Claim
60 words
The oven of claim 1 wherein said actual cook time is determined by adding a load compensation adjustment to said predetermined cook time if said sensed temperature of air in said rotisserie oven is below said set point temperature and subtracting a load compensation adjustment from said predetermined cook time if said sensed temperature is above said set point temperature.
Claim 4
Dependent Claim
31 words
The oven of claim 2 wherein said load compensation adjustment is determined by multiplying a load compensation factor by the difference between said predetermined cook temperature and the sensed air temperature.
Claim 5
Dependent Claim
27 words
The oven of claim 1 wherein said load compensation adjustment is determined by determining the percent difference between said sensed air temperature and the predetermined cook time.
Claim 6
Dependent Claim
38 words
The oven of claim 4 wherein said percent difference is multiplied by a load compensation factor to obtain a load compensation adjustment and wherein said load compensation adjustment is added to or subtracted from said predetermined cook time.
References Cited (Backward Citations)
US4238669A
Cited
US4379964A
Cited
US4924073A
Cited
US4962299A
Cited
US4913038A
Cited
US4968515A
Cited
US5044262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-03 | 1998-04-04 | 1998-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-03 | 2002-04-04 | 2002-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-03 | 2006-04-04 | 2006-10-04 | $7700.00 | Window Closed / Lapsed |