US3056738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impressed current cathodic protection system
Assignee: Individual
•
Filing: 1959-02-02
•
Granted: 1962-10-02
•
Expires: 1979-02-02
Abstract
No abstract record available.
Inventors
- 👤 Harry C Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:40
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/18; 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: 4
Claim 1
Independent Claim
97 words
AN ELECTRICAL PROTECTIVE DEVICE FOR THE PREVENTION OF CORROSION IN HOT WATER HEATERS AND ADAPTED TO BE REMOVABLY SECURED IN A THREADED OPENING IN AN ELECTRICALLY GROUNDED HOT WATER HEATER TANK, COMPRISING A BUSHING THREADED TO FIT SUCH THREADED OPENING IN THE TANK WALL; AN ANODE SECURED TO SUCH BUSHING AND ADAPTED TO THE TANK; A CASING MOUNTED ON THE BUSHING AND ADAPTED TO LIE OUTSIDE THE TANK; A HALF WAVE RECTIFIER AND A RESISTOR WITHIN THE CASING BOTH CONNECTED IN SERIES WITH THE ANODE; AND A CONDUCTOR FROM SAID RESISTOR TO THE EXTERIOR OF THE CASING.
Claim 2
Dependent Claim
97 words
AN ELECTRICAL PROTECTIVE DEVICE FOR THE PREVENTION OF CORROSION IN HOT WATER HEATERS AND ADAPTED TO BE REMOVABLY SECURED IN A THREADED OPENING IN AN ELECTRICALLY GROUNDED HOT WATER HEATER TANK, COMPRISING A BUSHING THREADED TO FIT SUCH THREADED OPENING IN THE TANK WALL; AN ANODE SECURED TO SUCH BUSHING AND ADAPTED TO THE TANK; A CASING MOUNTED ON THE BUSHING AND ADAPTED TO LIE OUTSIDE THE TANK; A HALF WAVE RECTIFIER AND A RESISTOR WITHIN THE CASING BOTH CONNECTED IN SERIES WITH THE ANODE; AND A CONDUCTOR FROM SAID RESISTOR TO THE EXTERIOR OF THE CASING.
Claim 3
Dependent Claim
109 words
IN COMBINATION WITH A METAL HOT WATER HEATER TANK HAVING A THREADED OPENING, A METAL BUSHING THREADED INTO SAID OPENING, AN INSULATING ELECTRODE SUPPORT CARRIED BY SAID BUSHING, WITH A PORTION OFFSET FROM THE AXIS THEREOF AND EXTENDING THEREFROM INTO SAID TANK FOR A DISTANCE MORE THAN HALFWAY FROM THE BUSHING TO THE OPPOSITE WALL OF SAID TANK, AND A SUBSTANTIALLY STRAIGHT WIRE ANODE SPACED FROM AND DISPOSED GENERALLY PARALLEL TO SAID OFFSET PORTION WHILE EXTENDING APPROXIMATELY COAXIAL OF SAID BUSHING FROM AN END PORTION CONNECTED TO THAT PART OF THE SUPPORT ADJACENT SAID BUSHING TO ITS OTHER END PORTION CONNECTED TO THE FREE END PORTION OF SAID SUPPORT.
Claim 4
Dependent Claim
109 words
IN COMBINATION WITH A METAL HOT WATER HEATER TANK HAVING A THREADED OPENING, A METAL BUSHING THREADED INTO SAID OPENING, AN INSULATING ELECTRODE SUPPORT CARRIED BY SAID BUSHING, WITH A PORTION OFFSET FROM THE AXIS THEREOF AND EXTENDING THEREFROM INTO SAID TANK FOR A DISTANCE MORE THAN HALFWAY FROM THE BUSHING TO THE OPPOSITE WALL OF SAID TANK, AND A SUBSTANTIALLY STRAIGHT WIRE ANODE SPACED FROM AND DISPOSED GENERALLY PARALLEL TO SAID OFFSET PORTION WHILE EXTENDING APPROXIMATELY COAXIAL OF SAID BUSHING FROM AN END PORTION CONNECTED TO THAT PART OF THE SUPPORT ADJACENT SAID BUSHING TO ITS OTHER END PORTION CONNECTED TO THE FREE END PORTION OF SAID SUPPORT.
References Cited (Backward Citations)
FR665313A
Cited
US1846765A
Cited
US2128331A
Cited
GB657392A
Cited
US2752308A
Cited
US2863819A
Cited
US2908623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |