Patent US3330940A successfully refreshed from Google Patents.
US3330940A
Expired / Lapsed
US
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Temperature control circuits
Assignee: Corning Glass Works
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Filing: 1964-06-22
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Granted: 1967-07-11
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Expires: 1984-06-22
Abstract
No abstract record available.
Inventors
- 👤 James P Hocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:48
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN AN ELECTRICAL COOKING VESSEL, (A) A FIRST HEATING CIRCUIT GENERATING A FIRST HEAT POWER OUTPUT, (B) A SECOND HEATING CIRCUIT FOR GENERATING A SECOND HEAT POWER OUTPUT, (C) A PAIR OF POWER SUPPLY TERMINALS, (D) A MANUAL SWITCH FOR INITIALLY CONNECTING ONE OF SAID FIRST AND SECOND HEATING CIRCUITS TO SAID PAIR OF POWER SUPPLY TERMINALS, AND (E) MEANS IN SAID FIRST HEATING CIRCUIT RESPONSIVE TO A PREDETERMINED TEMPERATURE GENERATED BY THE OPERATION OF SAID FIRST HEATING CIRCUIT FOR DISCONNECTING SAID FIRST HEATING CIRCUIT FROM SAID POWER SUPPLY TERMINALS AND CONNECTING SAID SECOND HEATING CIRCUIT TO SAID POWER SUPPLY TERMINALS.
Claim 2
Dependent Claim
101 words
IN AN ELECTRICAL COOKING VESSEL, (A) A FIRST HEATING CIRCUIT GENERATING A FIRST HEAT POWER OUTPUT, (B) A SECOND HEATING CIRCUIT FOR GENERATING A SECOND HEAT POWER OUTPUT, (C) A PAIR OF POWER SUPPLY TERMINALS, (D) A MANUAL SWITCH FOR INITIALLY CONNECTING ONE OF SAID FIRST AND SECOND HEATING CIRCUITS TO SAID PAIR OF POWER SUPPLY TERMINALS, AND (E) MEANS IN SAID FIRST HEATING CIRCUIT RESPONSIVE TO A PREDETERMINED TEMPERATURE GENERATED BY THE OPERATION OF SAID FIRST HEATING CIRCUIT FOR DISCONNECTING SAID FIRST HEATING CIRCUIT FROM SAID POWER SUPPLY TERMINALS AND CONNECTING SAID SECOND HEATING CIRCUIT TO SAID POWER SUPPLY TERMINALS.
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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |