Patent US2709679A successfully refreshed from Google Patents.
US2709679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathodically protected water heater storage tank with floating outlet
Assignee: AO Smith Corp
•
Filing: 1952-08-18
•
Granted: 1955-05-31
•
Expires: 1972-08-18
Abstract
No abstract record available.
Inventors
- 👤 Orrin E Andrus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:54
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; F; F24; F24H; F24H9/00; F24H9/40; F24H9/45; F24H9/455; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/8593; Y10T137/86236; Y10T137/86252
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A CATHODICALLY PROTECTED WATER HEATER STORAGE TANK ADAPTED TO BE EMPLOYED IN A DOMESTIC WATER SYSTEM OPERATING UNDER PRESSURE, COMPRISING A TANK HAVING A COLD WATER INLET AND A HOT WATER OUTLET CONNECTION NEAR THE TOP, MEANS IN SAID TANK FOR PROTECTING THE SAME FROM CORROSION AND WHICH MEANS EFFECTS GENERATION OF GASES WITHIN THE TANK TENDING TO LOWER THE WATER LEVEL THEREIN TO BELOW SAID OUTLET CONNECTION, A FLEXIBLE CONDUIT EXTENDING INWARDLY OF THE TANK FROM SAID CONNECTION, AND A FLOAT CARRYING THE FREE END OF SAID CONDUIT TO DISPOSE THE OPEN MOUTH THEREOF BENEATH THE LEVEL OF THE WATER IN THE TANK AT ALL TIMES.
Claim 2
Dependent Claim
107 words
A CATHODICALLY PROTECTED WATER HEATER STORAGE TANK ADAPTED TO BE EMPLOYED IN A DOMESTIC WATER SYSTEM OPERATING UNDER PRESSURE, COMPRISING A TANK HAVING A COLD WATER INLET AND A HOT WATER OUTLET CONNECTION NEAR THE TOP, MEANS IN SAID TANK FOR PROTECTING THE SAME FROM CORROSION AND WHICH MEANS EFFECTS GENERATION OF GASES WITHIN THE TANK TENDING TO LOWER THE WATER LEVEL THEREIN TO BELOW SAID OUTLET CONNECTION, A FLEXIBLE CONDUIT EXTENDING INWARDLY OF THE TANK FROM SAID CONNECTION, AND A FLOAT CARRYING THE FREE END OF SAID CONDUIT TO DISPOSE THE OPEN MOUTH THEREOF BENEATH THE LEVEL OF THE WATER IN THE TANK AT ALL TIMES.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |