Patent US4217481A successfully refreshed from Google Patents.
US4217481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooking appliance with several electric cooking zones
Assignee: Individual
•
Filing: 1978-08-31
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Granted: 1980-08-12
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Expires: 1998-08-31
Abstract
Abstract A surface-unit cooking appliance comprising a plurality of electric hot plates of the same type, each of the hot plates having a temperature regulator and each of the regulators having a temperature sensor for sensing the temperature of a cooking vessel or a product being cooked, at least one of the hot plates being disposed in each of first and second surface cooking zones, the first zone being designed for boiling water-containing media, the at least one temperature regulator therein being designed and constructed with a temperature control range limited to a maximum temperature of 150° C. (300° F.) at the temperature sensor, and the second zone being designed for roasting, the at least one temperature regulator therein being designed and constructed with a temperature control range limited to a maximum temperature above 220° C. (430° F.) at the temperature sensor.
Inventors
- 👤 Karl Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:27
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0227; H05B1/0252; H05B1/0258; H05B1/0261; H05B1/0266; F; F24; F24C; F24C15/00; F24C15/10; F24C15/102; F24C15/105; H05B3/00; H05B3/68; H05B2213/00; H05B2213/05; H05B2213/07
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
143 words
A surface-unit cooking appliance comprising a plurality of electric hot plates of the same type, each of the hot plates having a temperature regulator and each of the regulators having a temperature sensor for sensing the temperature of a cooking vessel or a product being cooked, at least one of the hot plates being disposed in each of first and second surface cooking zones, the first zone being designed for boiling water-containing media, the at least one temperature regulator in the first zone being designed and constructed with a temperature control range limited to a maximum temperature of 150° C. at the temperature sensor, and the second zone being designed for roasting, the at least one temperature regulator in the second zone being designed and constructed with a temperature control range limited to a maximum temperature above 220° C. at the temperature sensor.
Claim 2
Dependent Claim
143 words
A surface-unit cooking appliance comprising a plurality of electric hot plates of the same type, each of the hot plates having a temperature regulator and each of the regulators having a temperature sensor for sensing the temperature of a cooking vessel or a product being cooked, at least one of the hot plates being disposed in each of first and second surface cooking zones, the first zone being designed for boiling water-containing media, the at least one temperature regulator in the first zone being designed and constructed with a temperature control range limited to a maximum temperature of 150° C. at the temperature sensor, and the second zone being designed for roasting, the at least one temperature regulator in the second zone being designed and constructed with a temperature control range limited to a maximum temperature above 220° C. at the temperature sensor.
Claim 3
Dependent Claim
46 words
A cooking appliance according to claim 1, wherein the temperature sensors are filled with an expansion liquid, and wherein, for otherwise identical regulator construction for the two zones, the volume of each boiling zone temperature sensor is larger than the volume of each roasting zone sensor.
Claim 4
Dependent Claim
37 words
A cooking appliance according to claims 1 or 2, wherein the control range of each roasting zone regulator is 80° to 250° C. and the control range of each boiling zone regulator is 40° to 140° C.
Claim 5
Dependent Claim
25 words
A cooking appliance according to claim 1, wherein the boiling zone is located in that part of the appliance providing easiest accessibility for a user.
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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) | 1983-08-12 | 1984-02-11 | 1984-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-12 | 1988-02-11 | 1988-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-12 | 1992-02-11 | 1992-08-12 | $7700.00 | Window Closed / Lapsed |