US3769959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating tube and baffle for deep fat fryers
Assignee: CHICKEN UNLIMITED Inc
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Filing: 1972-03-02
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Granted: 1973-11-06
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Expires: 1992-03-02
Abstract
Abstract The invention is directed to an improved heating tube for deep fat fryers and particularly to a baffle which is inserted in the heating tube, said baffle consisting of an elongated strip of metal having projections struck out from alternate sides of the strip, said projections being placed at varying angles from the strip depending upon the distance between each projection and the point at which a flame enters the heating tube.
Inventors
- 👤 J Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:32
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/12; A47J37/1242; A47J37/1247; F; F28; F28F; F28F13/00; F28F13/06; F28F13/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
76 words
A heat exchanger for use in a deep fat fryer which comprises in combination: a metal combustion chamber and a flame-deflecting baffle removably positioned with said chamber, said baffle including an elongated metal strip and a series of oppositely disposed and angularly arranged metal deflectors extending from said strip, said deflectors forming an angle with said strip which becomes progressively larger as the distance between the deflector and the inlet opening of said combustion chamber increases.
Claim 2
Dependent Claim
76 words
A heat exchanger for use in a deep fat fryer which comprises in combination: a metal combustion chamber and a flame-deflecting baffle removably positioned with said chamber, said baffle including an elongated metal strip and a series of oppositely disposed and angularly arranged metal deflectors extending from said strip, said deflectors forming an angle with said strip which becomes progressively larger as the distance between the deflector and the inlet opening of said combustion chamber increases.
Claim 3
Dependent Claim
22 words
A heat exchanger as in claim 1 wherein said baffle includes an elongated handle for positioning said baffle within said combustion chamber.
Claim 4
Dependent Claim
143 words
A heat exchanger as in claim 1 wherein said baffle includes at least seven deflectors arranged on alternate sides of the elongated metal strip of the baffle, and wherein the angle between the deflector closest to the inlet opening of the combustion chamber and said metal strip is from 7* to 13*, the angle between the second deflector and the metal strip is from 10* to 16*, the angle between the third deflector and the metal strip is from 17* to 23*, the angle between the fourth deflector and the metal strip is from 21* to 27*, the angle between the fifth deflector and the metal strip is from 25* to 31*, the angle between the sixth deflector and the metal strip is from 29* to 35*, and the angle between the seventh deflector and the metal strip is from 35* to 41*.
Claim 5
Dependent Claim
122 words
A heat exchanger as in claim 3 wherein the angle between the deflector closest to the inlet opening of the combustion chamber and said metal strip is from 9* to 11*, the angle between the second deflector and the metal strip is from 12* to 14*, the angle between the third deflector and the metal strip is from 19* to 21*, the angle between the fourth deflector and the metal strip is from 23* to 25*, the angle between the fifth deflector and the metal strip is from 27* to 29*, the angle between the sixth deflector and the metal strip is from 31* to 33*, and the angle between the seventh deflector and the metal strip is from 37* to 39*.
Claim 6
Dependent Claim
32 words
A heat exchanger as in claim 2 wherein said handle is calibrated whereby the distance between the opening of said chamber and the first deflector of said strip can be accurately regulatEd.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |