US4488025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined high-frequency and thermal heating oven
Assignee: Sharp Corp
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Filing: 1982-07-28
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Granted: 1984-12-11
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Expires: 2002-07-28
Abstract
Abstract An oven comprises a chamber, a support for a foodstuff within the chamber, a high frequency electromagnetic wave heating device, a second heating device within the chamber for heating food by application of thermal energy, the second heating device being movably supported whereby it is translatable toward and away from the foodstuff, and a sensor for detecting a condition of the foodstuff during heating. The oven is responsive to the sensor for identifying the foodstuff, for controlling the position of the second heater within the chamber, and for controlling the periods of time during which the second heater is operative.
Inventors
- 👤 Takeshi Tanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:27
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/6408; H05B6/6411; F; F24; F24C; F24C7/00; F24C7/08; F24C7/087; H05B6/6447; H05B6/6458; H05B6/647; H05B6/6482
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
An oven comprising: a chamber; support means for supporting a foodstuff within said chamber; first means for heating the foodstuff by high frequency electromagnetic waves; second means within said chamber for heating the foodstuff by application of thermal energy to the foodstuff, said second means being movably supported whereby it is translatable toward and away from a foodstuff on said support means; sensor means for sensing a condition of the foodstuff during heating thereof; and means responsive to said sensor means for identifying the foodstuff.
Claim 2
Dependent Claim
85 words
An oven comprising: a chamber; support means for supporting a foodstuff within said chamber; first means for heating the foodstuff by high frequency electromagnetic waves; second means within said chamber for heating the foodstuff by application of thermal energy to the foodstuff, said second means being movably supported whereby it is translatable toward and away from a foodstuff on said support means; sensor means for sensing a condition of the foodstuff during heating thereof; and means responsive to said sensor means for identifying the foodstuff.
Claim 3
Dependent Claim
47 words
An oven as in claim 1, wherein said sensor means is adapted to sense a condition of the foodstuff at plural times during heating thereof; and said means responsive to said sensor means is responsive to variation in sensor output at respective times for identifying the foodstuff.
Claim 4
Dependent Claim
25 words
An oven as in claim 1 further comprising means responsive to said sensor means for controlling the position of said second means within said chamber.
Claim 5
Dependent Claim
26 words
An oven as in claim 1, wherein said means for identifying the foodstuff comprises means for controlling the position of said second means within said chamber.
Claim 6
Dependent Claim
31 words
An oven as in claim 1, further comprising means responsive to said sensor means for controlling the period of time during which said second means is operative to heat the foodstuff.
Claim 7
Dependent Claim
32 words
An oven as in claim 1, wherein said means for identifying the foodstuff comprises means for controlling the period of time during which said second means is operative to heat the foodstuff.
Claim 8
Dependent Claim
97 words
An oven comprising: a chamber; support means for supporting a foodstuff within said chamber; first means for heating the foodstuff by high frequency electromagnetic waves; second means within said chamber for heating the foodstuff by application of thermal energy to the foodstuff, said second means being movably supported whereby it is translatable toward and away from a foodstuff on said support means; sensor means for sensing a condition of the foodstuff during heating thereof; and means responsive to said sensor means for identifying the foodstuff and for controlling the position of said second means within said chamber.
Claim 9
Dependent Claim
97 words
An oven comprising: a chamber; support means for supporting a foodstuff within said chamber; first means for heating the foodstuff by high frequency electromagnetic waves; second means within said chamber for heating the foodstuff by application of thermal energy to the foodstuff, said second means being movably supported whereby it is translatable toward and away from a foodstuff on said support means; sensor means for sensing a condition of the foodstuff during heating thereof; and means responsive to said sensor means for identifying the foodstuff and for controlling the position of said second means within said chamber.
Claim 10
Dependent Claim
54 words
An oven as in claim 7, wherein said sensor means is adapted to sense a condition of the foodstuff at plural times during heating thereof; and said means responsive to said sensor means is responsive to variation in sensor output at respective times for controlling the position of said second means within said chamber.
Claim 11
Dependent Claim
26 words
An oven as in claim 7, further comprising means for controlling the period of time during which said second means is operative to heat the foodstuff.
Claim 12
Dependent Claim
36 words
An oven as in claim 7, wherein said means for controlling the position of said second means comprises means for controlling the period of time during which said second means is operative to heat the foodstuff.
Claim 13
Dependent Claim
22 words
An oven as in claim 1, wherein said sensor means comprises means for detecting gaseous substances emitted by the foodstuff during heating.
Claim 14
Dependent Claim
22 words
An oven as in claim 7 wherein said sensor means comprises means for detecting gaseous substances emitted by the foodstuff during heating.
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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) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |