Patent US3221132A successfully refreshed from Google Patents.
US3221132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-resonant oven cavity and resonant antenna system for microwave heating oven
Assignee: General Electric Co
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Filing: 1963-07-22
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Granted: 1965-11-30
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 James E Staats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:20
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A MICROWAVE HEATING OVEN COMPRISING CONDUCTIVE WALL STRUCTURE DEFINING AN OVEN CAVITY AND HAVING A DOORWAY THEREIN COMMUNICATING WITH SAID OVEN CAVITY AND PROVIDED WITH A DOOR MOVABLE BETWEEN OPEN AND CLOSED POSITIONS WITH RESPECT TO SAID DOORWAY, AN ANTENNA ARRANGED WITHIN SAID OVER CAVITY, AND A SOURCE OF MICROWAVE ENERGY ADAPTED TO OPERATE AT A PREDETERMINED WAVELENGTH AND OPERATIVELY COUPLED TO SAID ANTENNA, THE DIMENSIONS OF SAID OVEN CAVITY BEING RELATED TO SAID PREDETERMINED WAVELENGTH OF THE MICROWAVE ENERGY OF SAID SOURCE SO THAT SAID OVER CAVITY IS FREE OF RESONANT MODES AT SAID PREDETERMINED WAVELENTH AND SO THAT THE WAVELENGTHS OF THE RESONANT MODES OF SAID OVEN CAVITY ARE DISPLACED BY AT LEAST ABOUT 5% FROM SAID PREDETERMINED WAVELENGTH.
Claim 2
Dependent Claim
121 words
A MICROWAVE HEATING OVEN COMPRISING CONDUCTIVE WALL STRUCTURE DEFINING AN OVEN CAVITY AND HAVING A DOORWAY THEREIN COMMUNICATING WITH SAID OVEN CAVITY AND PROVIDED WITH A DOOR MOVABLE BETWEEN OPEN AND CLOSED POSITIONS WITH RESPECT TO SAID DOORWAY, AN ANTENNA ARRANGED WITHIN SAID OVER CAVITY, AND A SOURCE OF MICROWAVE ENERGY ADAPTED TO OPERATE AT A PREDETERMINED WAVELENGTH AND OPERATIVELY COUPLED TO SAID ANTENNA, THE DIMENSIONS OF SAID OVEN CAVITY BEING RELATED TO SAID PREDETERMINED WAVELENGTH OF THE MICROWAVE ENERGY OF SAID SOURCE SO THAT SAID OVER CAVITY IS FREE OF RESONANT MODES AT SAID PREDETERMINED WAVELENTH AND SO THAT THE WAVELENGTHS OF THE RESONANT MODES OF SAID OVEN CAVITY ARE DISPLACED BY AT LEAST ABOUT 5% FROM SAID PREDETERMINED WAVELENGTH.
References Cited (Backward Citations)
US2937259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |