US4565704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for frying
Assignee: Nestec SA
•
Filing: 1983-06-30
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Granted: 1986-01-21
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Expires: 2003-06-30
Abstract
Abstract A method and apparatus for contact frying a foodstuff wherein the foodstuff is transported on the upper run of a single solid endless thin steel conveyor belt which is heated from below by short wave infrared radiation.
Inventors
- 👤 Magnus Dagerskog
- 👤 Anders B. Ganrot
- 👤 Kurt O. G. Jonsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:24
CPC Classifications
A; A21; A21B; A21B2/00; A21B1/00; A21B1/42; A21B1/48; A47; A47J; A47J37/00; A47J37/04; A47J37/044
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
52 words
A method of contact frying a foodstuff which comprises transporting the foodstuff on the upper run of a single solid endless thin steel conveyor belt which is heated from below by short wave infrared radiation, sensing the temperature of said belt and controlling said radiation in response to changes in said temperature.
Claim 2
Independent Claim
52 words
A method of contact frying a foodstuff which comprises transporting the foodstuff on the upper run of a single solid endless thin steel conveyor belt which is heated from below by short wave infrared radiation, sensing the temperature of said belt and controlling said radiation in response to changes in said temperature.
Claim 3
Independent Claim
53 words
A method of contact frying a foodstuff which comprises transporting the foodstuff on the upper run of a single solid endless thin steel conveyor belt which is heated from below by short wave infrared radiation, detecting a foodstuff on the belt and controlling said radiation in response to the presence of said foodstuff.
Claim 4
Independent Claim
53 words
A method of contact frying a foodstuff which comprises transporting the foodstuff on the upper run of a single solid endless thin steel conveyor belt which is heated from below by short wave infrared radiation, detecting a foodstuff on the belt and controlling said radiation in response to the presence of said foodstuff.
Claim 5
Dependent Claim
26 words
A method according to claim 1 or claim 2, wherein said short wave infrared radiation has a wavelength maximum of from 0.76 μm to 2.0 μm.
Claim 6
Independent Claim
65 words
An apparatus for the contact frying of a foodstuff comprising a single solid endless thin steel conveyor belt on the upper run of which the foodstuff is transported, means for heating said belt from below by short wave infrared radiation, and means for sensing the temperature of the belt and controlling the operation of said heating means in response to changes in said belt temperature.
Claim 7
Independent Claim
65 words
An apparatus for the contact frying of a foodstuff comprising a single solid endless thin steel conveyor belt on the upper run of which the foodstuff is transported, means for heating said belt from below by short wave infrared radiation, and means for sensing the temperature of the belt and controlling the operation of said heating means in response to changes in said belt temperature.
Claim 8
Dependent Claim
19 words
An apparatus according to claim 4, wherein the thickness of the belt is from 1.0 mm to 1.5 mm.
Claim 9
Dependent Claim
14 words
An apparatus according to claim 4, wherein the belt is made of mild steel.
Claim 10
Dependent Claim
27 words
An apparatus according to claim 4, wherein the means for heating said belt provides infrared radiation with a wavelength maximum of from 0.76 μm to 2.0 μm.
Claim 11
Dependent Claim
34 words
An apparatus according to claim 4, further comprising direct heating means above the upper run of the belt to provide infrared radiation with a wavelength maximum from about 0.70 μm to about 4.0 μm.
Claim 12
Independent Claim
68 words
An apparatus for the contact frying of a foodstuff comprising a single solid endless thin steel conveyor belt on the upper run of which the foodstuff is transported, means for heating said belt from below by short wave infrared radiation, and means for detecting a foodstuff on the belt and controlling the operation of said heating means in response to the presence of said foodstuff on said belt.
Claim 13
Independent Claim
68 words
An apparatus for the contact frying of a foodstuff comprising a single solid endless thin steel conveyor belt on the upper run of which the foodstuff is transported, means for heating said belt from below by short wave infrared radiation, and means for detecting a foodstuff on the belt and controlling the operation of said heating means in response to the presence of said foodstuff on said belt.
References Cited (Backward Citations)
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Cited
US2491687A
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US2504110A
Cited
US3371595A
Cited
US4072092A
Cited
US4151791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-20 | 1989-07-22 | 1990-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-20 | 1993-07-22 | 1994-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-20 | 1997-07-22 | 1998-01-21 | $7700.00 | Window Closed / Lapsed |