Patent US3665491A successfully refreshed from Google Patents.
US3665491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food heating device
Assignee: Individual
•
Filing: 1971-02-17
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Granted: 1972-05-23
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Expires: 1991-02-17
Abstract
Abstract A microwave oven divided into a plurality of zones. Each zone is operative to generate a different quantity of heat energy. Food trays are provided. The trays are divided into a plurality of compartments. Each compartment is adapted to be aligned with one of the oven zones so that food disposed in that tray compartment is heated to a desired temperature.
Inventors
- 👤 Willard Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:39
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/78; H05B6/782; A; A23; A23B; A23B2/00; A23B2/05; A23B2/08; Y; Y10; Y10S; Y10S99/00; Y10S99/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
150 words
A food heating device comprising an oven, said oven having wall means defining an interior, at least one partition supported by said wall means and extending partially into said interior to divide said interior into at least three zones, the first two of said zones being in side-by-side relation with respect to each other, said third zone being common to said first two zones, heat generating means disposed in each of said first two zones, each of said heat generating means being operable to generate a different heating temperature, and a food tray to be placed in said third zone, said food tray being divided into a plurality of compartments, some of said compartments corresponding to one of said first two zones, the remainder of saId compartments corresponding to the other of said first two zones so that food in each of said compartments is heated to a different temperature.
Claim 2
Dependent Claim
150 words
A food heating device comprising an oven, said oven having wall means defining an interior, at least one partition supported by said wall means and extending partially into said interior to divide said interior into at least three zones, the first two of said zones being in side-by-side relation with respect to each other, said third zone being common to said first two zones, heat generating means disposed in each of said first two zones, each of said heat generating means being operable to generate a different heating temperature, and a food tray to be placed in said third zone, said food tray being divided into a plurality of compartments, some of said compartments corresponding to one of said first two zones, the remainder of saId compartments corresponding to the other of said first two zones so that food in each of said compartments is heated to a different temperature.
Claim 3
Dependent Claim
107 words
A food heating device as defined in claim 1 comprising conveyor means for conveying said tray into and out of said oven, drive means, said drive means being operable when energized to drive said conveyor, and control means, said control means being operative to deenergize said conveyor means when said tray is in said oven, and means for selectively energizing said heat generating means, said selective energizing means cooperating with said control means so that said conveyor means is deenergized when said tray is in said oven and said heat generating means is energized, and said control means is energized when said heat generating means is deenergized.
Claim 4
Dependent Claim
66 words
A food heating device as defined in claim 2 wherein said oven has a top wall, said partition extending partially into said interior from said top wall, said compartments being disposed on said tray in side by side relation, web means disposed between said compartments, said web means defining a notch for receiving said partition when said tray is in said oven to isolate adjacent compartments.
Claim 5
Dependent Claim
34 words
A food heating device as defined in claim 2 wherein said heat generating means comprises microwave generators and said control means includes selectively energizable timers for said microwave generators, and said tray is transparent.
Claim 6
Dependent Claim
90 words
A food heating device as defined in claim 1 including conveyor means disposed below said oven, said conveyor means defining said oven floor, said oven having a top wall, said partition extending partially into said interior from said top wall, said compartments being disposed longitudinally along said tray in side by side parallel relation, said tray including longitudinally disposed web means disposed to intermediate said compartments, said web means defining a longitudinally disposed notch for receiving said partition when said tray is in said oven to substantially isolate adjacent compartments.
Claim 7
Dependent Claim
34 words
A food generating device as defined in claim 5 wherein said heat generating means comprises microwave generators, and said control means includes selectively energizable timers for said microwave generators and said tray is transparent.
Claim 8
Dependent Claim
68 words
A food heating device as defined in claim 1 wherein said oven has a top wall and a bottom wall, said partition extending partially into said interior from said top wall, said compartments being disposed on said tray in side-by-side relation, web means disposed between said compartments, said web means defining a notch for receiving said partition when said tray is in said oven to isolate adjacent compartments.
Claim 9
Dependent Claim
22 words
A food heating device as defined in claim 1 wherein said heat generating means comprises microwave generators, and said tray is transparent.
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |