US3149637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas dishwasher control circuit
Assignee: Preway Inc
•
Filing: 1962-03-19
•
Granted: 1964-09-22
•
Expires: 1982-03-19
Abstract
No abstract record available.
Inventors
- 👤 Jack W Claywell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:08
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/4285; G; G05; G05B; G05B19/00; G05B19/02; A47L15/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A GAS DISHWASHER HAVING A TUB, MEANS INCLUDING AN ELECTRICALLY OPERATED GAS VALVE FOR HEATING WATER IN THE TUB, A BLOWER FOR SUPPLYING COMBUSTION AIR TO THE HEATING MEANS, A BLOWER FOR SUPPLYING AIR TO THE COMBUSTION PRODUCTS FOR DILUTION AND COOLING THEREOF, MEANS FOR DETECTING OPERATION OF SAID BLOWERS, AND A CIRCUIT INCLUDING SAID DETECTING MEANS AND GAS VALVE IN SERIES WHEREBY THE GAS VALVE CAN NOT OPERATE UNLESS THE BLOWERS OPERATE.
Claim 2
Dependent Claim
74 words
IN A GAS DISHWASHER HAVING A TUB, MEANS INCLUDING AN ELECTRICALLY OPERATED GAS VALVE FOR HEATING WATER IN THE TUB, A BLOWER FOR SUPPLYING COMBUSTION AIR TO THE HEATING MEANS, A BLOWER FOR SUPPLYING AIR TO THE COMBUSTION PRODUCTS FOR DILUTION AND COOLING THEREOF, MEANS FOR DETECTING OPERATION OF SAID BLOWERS, AND A CIRCUIT INCLUDING SAID DETECTING MEANS AND GAS VALVE IN SERIES WHEREBY THE GAS VALVE CAN NOT OPERATE UNLESS THE BLOWERS OPERATE.
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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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |