US4960977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infra-red baking oven
Assignee: GS BLODGETT Co Inc A CORP OF VERMONT
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Filing: 1989-04-20
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Granted: 1990-10-02
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Expires: 2009-04-20
Abstract
Abstract An infra-red oven for cooking food at low wattage and with infra-red radiation having a wavelength of 3-6 micron is disclosed. The oven includes a rotatable turntable with a lower infra-red emitter disposed below the turntable and an upper infra-red emitter disposed above the turntable in a vertically moveable shroud. Opposed side emitters are deposed on either side of the turntable to cook the sides of the food. To utilize the oven the shroud is raised and food is placed on the turntable. The shroud is then lowered until the upper emitter is about 1.5 inches above the food and the turntable is rotated. Rotation continues as radiation is directed on to the lower and upper surfaces and the sides until the food is cooked.
Inventors
- 👤 Lorne B. Alden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:07
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/0623; A47J37/0629; A47J37/04; A47J37/046; A47J37/0658
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
185 words
An oven adapted to cook with low power infra-red radiation having a wavelength of from 3-6 microns comprising: a downwardly opening upper module and an upwardly opening lower module; a pair of opposed side plates interconnecting said modules at opposed sides so that said upper module is spaced a predetermined distance above said lower module; a shroud disposed above the lower module and linear actuator means coupling said shroud and said upper module for moving said shroud between an upper position disposed within said upper module and a lower position adjacent the opening of said lower module; food support means rotatably mounted in said lower module including a flat turntable mounted in the opening of said module for supporting food to be cooked and for rotating said food during cooking; first infra-red emitter disposed adjacent, in alignment with, below and parallel to said turntable; second infra-red emitter disposed in said shroud, in alignment with and parallel to said turntable; and a pair of side infra-red emitters one disposed on the inside surface of each side plate perpendicular to plane intersecting the plane containing said turntable.
Claim 2
Dependent Claim
185 words
An oven adapted to cook with low power infra-red radiation having a wavelength of from 3-6 microns comprising: a downwardly opening upper module and an upwardly opening lower module; a pair of opposed side plates interconnecting said modules at opposed sides so that said upper module is spaced a predetermined distance above said lower module; a shroud disposed above the lower module and linear actuator means coupling said shroud and said upper module for moving said shroud between an upper position disposed within said upper module and a lower position adjacent the opening of said lower module; food support means rotatably mounted in said lower module including a flat turntable mounted in the opening of said module for supporting food to be cooked and for rotating said food during cooking; first infra-red emitter disposed adjacent, in alignment with, below and parallel to said turntable; second infra-red emitter disposed in said shroud, in alignment with and parallel to said turntable; and a pair of side infra-red emitters one disposed on the inside surface of each side plate perpendicular to plane intersecting the plane containing said turntable.
Claim 3
Dependent Claim
12 words
The oven of claim 1 wherein said emitters are etched foil emitters.
Claim 4
Dependent Claim
36 words
The oven of claim 1 wherein the lower position of said shroud disposes said upper emitter about 1.5 inches above the upper surface of food to be cooked when the food is disposed on said turntable.
Claim 5
Dependent Claim
21 words
The oven of claim 1 wherein said turntable is rotated by said support means about one revolution per minute during cooking.
Claim 6
Dependent Claim
102 words
Method of baking comprising the steps of: providing an oven having a rotatable turntable for supporting food to be cooked, and first infra-red radiation emitter disposed below the turntable, a second infra-red emitter disposed above the turntable and a pair of side infra-red emitters disposed on opposite sides of said turntable; directing infra-red radiation on the sides, upper and lower surfaces of food to be cooked when supported on said turntable from each of said emitters having a predetermined wavelength of 3-6 microns and a wattage of about 7-9; rotating said turntable while directing radiation onto said food while said food cooks.
Claim 7
Dependent Claim
102 words
Method of baking comprising the steps of: providing an oven having a rotatable turntable for supporting food to be cooked, and first infra-red radiation emitter disposed below the turntable, a second infra-red emitter disposed above the turntable and a pair of side infra-red emitters disposed on opposite sides of said turntable; directing infra-red radiation on the sides, upper and lower surfaces of food to be cooked when supported on said turntable from each of said emitters having a predetermined wavelength of 3-6 microns and a wattage of about 7-9; rotating said turntable while directing radiation onto said food while said food cooks.
Claim 8
Dependent Claim
12 words
The method of claim 5 wherein said emitters are etched foil emitters.
Claim 9
Dependent Claim
20 words
The method of claim 6 wherein the wavelength of the emissions from said upper and lower emitters is 4-5 microns.
Claim 10
Dependent Claim
15 words
The method of claim 7 wherein said turntable rotates at about one revolution per minute.
Claim 11
Dependent Claim
66 words
The method of claim 8 further comprising: providing a vertically moveable shroud disposed over said turntable said shroud mounting said upper emitter therein; raising said shroud and placing the food to be cooked on the said turntable and subsequently lowering said shroud until said upper emitter is about 1.5 inches above the upper surface of the food to be cooked before directing radiation onto the food.
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) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |