US3309981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food cooker
Assignee: Heat and Control Inc
•
Filing: 1965-07-06
•
Granted: 1967-03-21
•
Expires: 1985-07-06
Abstract
No abstract record available.
Inventors
- 👤 Clark K Benson
- 👤 Andrew A Caridis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:33
CPC Classifications
A; A21; A21B; A21B5/00; A21B5/08; A47; A47J; A47J37/00; A47J37/12; A47J37/1214
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A FOOD COOKER, A VAT HAVING INLET AND DISCHARGE ENDS AND ADAPTED TO HOLD A QUANTITY OF OIL, A DRAIN MOUNTED IN THE VAT INTERMEDIATE THE ENDS OF THE SAME AND SERVING AS THE SOLE DRAIN FOR THE VAT, EXTERNAL HEAT EXCHANGER MEANS FOR HEATING THE OIL IN THE VAT, MEANS CONNECTING THE DRAIN TO THE HEAT EXCHANGER, MEANS FOR SUPPLYING OIL FROM THE HEAT EXCHANGER TO THE VAT SO THAT OIL FLOWS FROM THE INLET END OF THE VAT TO THE DRAIN AND BACK TO THE HEAT EXCHANGER, AND MEANS FOR SUPPLYING OIL FROM THE HEAT EXCHANGER TO THE VAT SO THAT OIL FLOWS IN THE VAT FROM THE DISCHARGE END OF THE VAT TO THE DRAIN IN A DIRECTION SUBSTANTIALLY OPPOSITE THE FLOW OF THE OIL FROM THE INLET END OF THE VAT.
Claim 2
Dependent Claim
136 words
IN A FOOD COOKER, A VAT HAVING INLET AND DISCHARGE ENDS AND ADAPTED TO HOLD A QUANTITY OF OIL, A DRAIN MOUNTED IN THE VAT INTERMEDIATE THE ENDS OF THE SAME AND SERVING AS THE SOLE DRAIN FOR THE VAT, EXTERNAL HEAT EXCHANGER MEANS FOR HEATING THE OIL IN THE VAT, MEANS CONNECTING THE DRAIN TO THE HEAT EXCHANGER, MEANS FOR SUPPLYING OIL FROM THE HEAT EXCHANGER TO THE VAT SO THAT OIL FLOWS FROM THE INLET END OF THE VAT TO THE DRAIN AND BACK TO THE HEAT EXCHANGER, AND MEANS FOR SUPPLYING OIL FROM THE HEAT EXCHANGER TO THE VAT SO THAT OIL FLOWS IN THE VAT FROM THE DISCHARGE END OF THE VAT TO THE DRAIN IN A DIRECTION SUBSTANTIALLY OPPOSITE THE FLOW OF THE OIL FROM THE INLET END OF THE VAT.
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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |