US3246122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature controlled surface heating unit
Assignee: General Electric Co
•
Filing: 1963-11-29
•
Granted: 1966-04-12
•
Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 John W Wetzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:16
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/10; F24C15/102; F24C15/105; H; H05; H05B; H05B1/00; H05B1/02; H05B1/0227; H05B1/0252; H05B1/0258; H05B1/0261; H05B1/0266; H05B3/00; H05B3/68; H05B3/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A COOKING APPLIANCE, INCLUDING, IN COMBINATION, AN ELECTRICAL HEATING ELEMENT HAVING AN ELECTRICAL RESISTANCE WIRE WITHIN A TUBULAR SHEATH DISPOSED IN A FLAT SPIRAL EMBODYING A PLURALITY OF TURNS OF INCREASING RADIUS TO PROVIDE FOR HEAT DISTRIBUTION OVER THE BOTTOM OF A COOKING VESSEL PLACED THEREON, A TEMPERATURE SENSING ELEMENT DISPOSED WITHIN THE CENTRAL PORTION OF THE SPIRAL TO BE ENCLOSED THEREBY, AT LEAST THE FIRST TWO TURNS OF THE SPIRAL CLOSETS TO THE SENSING ELEMENT BEING DEVOID OF SAID RESISTANCE WIRE WHEREBY SAID SPIRAL PORTION RECEIVES SUBSTANTIALLY ONLY HEAT CONDUCTED FROM PORTIONS OF THE SPIRAL MORE REMOTE FROM THE HEATING ELEMENT, AND MEANS FOR
Claim 2
Dependent Claim
105 words
A COOKING APPLIANCE, INCLUDING, IN COMBINATION, AN ELECTRICAL HEATING ELEMENT HAVING AN ELECTRICAL RESISTANCE WIRE WITHIN A TUBULAR SHEATH DISPOSED IN A FLAT SPIRAL EMBODYING A PLURALITY OF TURNS OF INCREASING RADIUS TO PROVIDE FOR HEAT DISTRIBUTION OVER THE BOTTOM OF A COOKING VESSEL PLACED THEREON, A TEMPERATURE SENSING ELEMENT DISPOSED WITHIN THE CENTRAL PORTION OF THE SPIRAL TO BE ENCLOSED THEREBY, AT LEAST THE FIRST TWO TURNS OF THE SPIRAL CLOSETS TO THE SENSING ELEMENT BEING DEVOID OF SAID RESISTANCE WIRE WHEREBY SAID SPIRAL PORTION RECEIVES SUBSTANTIALLY ONLY HEAT CONDUCTED FROM PORTIONS OF THE SPIRAL MORE REMOTE FROM THE HEATING ELEMENT, AND MEANS FOR
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |