Patent US5300927A successfully refreshed from Google Patents.
Patent US3176115A successfully refreshed from Google Patents.
US3176115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric water heater
Assignee: General Electric Co
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Filing: 1963-05-20
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Granted: 1965-03-30
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Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Earl W Balis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:53
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/201; F24H1/202; F24H9/00; F24H9/40; F24H9/45; F24H9/455
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
IN AN ELECTRICL IMMERSION TYPE HOT WATER TANK ASSEMBLY, WHICH IS CLOSED TO ENABLE THE APPLICATION OF FLUID PRESSURE THEREIN TO FORCE THE WATER THEREFROM TO A LEVEL ABOVE THE TANK, THE WALL OF THE TANK COMPRISING A METAL SHELL WITH A PROTECTIVE COATING OVER SUBSTANTIALLY THE ENTIRE INNER SURFACE THEREOF AND THE WATER BEING HEATED BY AN ELECTRICAL RESISTANCE HEATING ELEMENT PROTRUDING THROUGH SAID WALL INTO THE WATER AND ADAPTABLE TO BE REMOVED FROM THE TANK WITHOUT ACCESS TO THE INTERIOR THEREOF, THE IMPROVEMENT COMPRISING: (A) MEANS COMPLETELY COVERING THE ELECTRICAL RESISTANCE ELEMENT AND ELECTRICALLY INSULATED THEREFROM FOR CATHODICALLY PROTECTING SAID METAL SHELL OF THE TANK, AND (B) MEANS FOR ELECTRICALLY CONNECTING SAID PROTECTING MEANS TO SAID METAL SHELL, (1) SAID PROTECTING MEANS BEING COMPOSED OF METAL, WHICH IS ANODIC TO THE METAL OF WHICH SAID METAL SHELL IS COMPOSED AND WHICH WHEN OPERATIVELY CONNECTED TO SAID METAL SHELL CONTINUES TO DISSIPATE UNTIL SUBSTANTIALLY CONSUMED TO THE DEGREE REQUIRED TO CATHODICALLY PROTECT SAID METAL SHELL.
Claim 2
Dependent Claim
166 words
IN AN ELECTRICL IMMERSION TYPE HOT WATER TANK ASSEMBLY, WHICH IS CLOSED TO ENABLE THE APPLICATION OF FLUID PRESSURE THEREIN TO FORCE THE WATER THEREFROM TO A LEVEL ABOVE THE TANK, THE WALL OF THE TANK COMPRISING A METAL SHELL WITH A PROTECTIVE COATING OVER SUBSTANTIALLY THE ENTIRE INNER SURFACE THEREOF AND THE WATER BEING HEATED BY AN ELECTRICAL RESISTANCE HEATING ELEMENT PROTRUDING THROUGH SAID WALL INTO THE WATER AND ADAPTABLE TO BE REMOVED FROM THE TANK WITHOUT ACCESS TO THE INTERIOR THEREOF, THE IMPROVEMENT COMPRISING: (A) MEANS COMPLETELY COVERING THE ELECTRICAL RESISTANCE ELEMENT AND ELECTRICALLY INSULATED THEREFROM FOR CATHODICALLY PROTECTING SAID METAL SHELL OF THE TANK, AND (B) MEANS FOR ELECTRICALLY CONNECTING SAID PROTECTING MEANS TO SAID METAL SHELL, (1) SAID PROTECTING MEANS BEING COMPOSED OF METAL, WHICH IS ANODIC TO THE METAL OF WHICH SAID METAL SHELL IS COMPOSED AND WHICH WHEN OPERATIVELY CONNECTED TO SAID METAL SHELL CONTINUES TO DISSIPATE UNTIL SUBSTANTIALLY CONSUMED TO THE DEGREE REQUIRED TO CATHODICALLY PROTECT SAID METAL SHELL.
References Cited (Backward Citations)
US2636974A
Cited
US2310325A
Cited
US2378772A
Cited
GB724923A
Cited
US2726315A
Cited
US2783353A
Cited
GB839214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |