US3731037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave kiln to cook food
Assignee: Individual
•
Filing: 1971-10-29
•
Granted: 1973-05-01
•
Expires: 1991-10-29
Abstract
Abstract A microwave oven is provided with a heat insulating structure containing a work chamber lined with a microwave lossy material where said lining: 1) can be porous to water, 2) can represent an acceptable load to said microwave oven, 3) can define a closed cavity, 4) can be a mixture of a lossy electrical material and a lossy magnetic material, and 5) can be used in conjunction with a non-magnetic-metal, heat-conducting workload container.
Inventors
- 👤 M Levinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:14
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/647; H05B6/6491; H05B6/6494
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
70 words
In a microwave oven comprising a chamber for receiving an article to be heated, means for emitting microwave energy to said chamber, and a heating member within said chamber, the improvement in said heating member comprising: a body of non-lossy, microwave-permeable, heat-insulating material forming a chamber therein, a lossy material lining the interior walls of said chamber, and access means to said chamber for receiving an article to be heated.
Claim 2
Dependent Claim
70 words
In a microwave oven comprising a chamber for receiving an article to be heated, means for emitting microwave energy to said chamber, and a heating member within said chamber, the improvement in said heating member comprising: a body of non-lossy, microwave-permeable, heat-insulating material forming a chamber therein, a lossy material lining the interior walls of said chamber, and access means to said chamber for receiving an article to be heated.
Claim 3
Dependent Claim
23 words
In a microwave oven according to claim 1, where said heating member provides an acceptable load to said means for emitting microwave energy.
Claim 4
Dependent Claim
24 words
In a microwave oven according to claim 1, wherein at least one wall of said lining is provided with pockets of microwave-lossy, arcing material.
Claim 5
Dependent Claim
20 words
In a microwave oven according to claim 1, wherein the roof of the lining is more lossy than the base.
Claim 6
Dependent Claim
18 words
In a microwave oven according to claim 1, an aluminum container for receiving said article to be heated.
Claim 7
Dependent Claim
84 words
In a microwave oven comprising a chamber for receiving an article to be heated, means for emitting microwave energy to said chamber, and a heating member within said chamber, the improvement in said heating member comprising: a body of non-lossy, microwave-permeable, heat-insulating material forming a chamber therein, a lossy material lining the base of said chamber, said base being provided with a mixture of lossy electrical material and lossy magnetic material, and access means to said chamber for receiving an article to be heated.
Claim 8
Dependent Claim
84 words
In a microwave oven comprising a chamber for receiving an article to be heated, means for emitting microwave energy to said chamber, and a heating member within said chamber, the improvement in said heating member comprising: a body of non-lossy, microwave-permeable, heat-insulating material forming a chamber therein, a lossy material lining the base of said chamber, said base being provided with a mixture of lossy electrical material and lossy magnetic material, and access means to said chamber for receiving an article to be heated.
Claim 9
Dependent Claim
15 words
In a microwave oven according to claim 6, wherein the base is porous to liquids.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |