US3351545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for checking cathodic protection
Assignee: CONTRE LA CORROSION SOC ET
•
Filing: 1963-12-23
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Granted: 1967-11-07
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Heuze Bernard Marie Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:04
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A MONITORING AND RECORDING DEVICE FOR THE CONTINUOUS CHECKING OF THE EFFECTIVENESS OF A CATHODIC PROTECTION SYSTEM OF A STRUCTURE, COMPRISING A VOLTMETER RELAY CAPABLE OF SENSING, AND OPERABLE BY, THE POTENTIAL DIFFERENCE BETWEEN A STRUCTURE BEING PROTECTED AN A REFERENCE ELECTRODE LOCATED IN THE VICINITY OF THE STRUCTURE, SAID DEVICE FURTHER INCLUDING A COUNTER, A TIME DEVICE AND A BATTERY CONNECTED IN A FIRST CIRCUIT CONTROLLED BY SAID RELAY, SAID RELAY BEING ADJUSTED TO CLOSE THE FIRST CIRCUIT UPON DEVIATION OF SAID POTENTIAL BEYOND A PREDETERMINED VALUE, SOLELY FOR THE DURATION OF SAID DEVIATION, TO TRIGGER THE COUNTER TO COUNT AND RECORD THE NUMBER OF DEVIATIONS AND TO TRIGGER THE TIMING DEVICE TO RECORD THE TOTAL DURATION OF SAID DEVIATIONS.
Claim 2
Dependent Claim
121 words
A MONITORING AND RECORDING DEVICE FOR THE CONTINUOUS CHECKING OF THE EFFECTIVENESS OF A CATHODIC PROTECTION SYSTEM OF A STRUCTURE, COMPRISING A VOLTMETER RELAY CAPABLE OF SENSING, AND OPERABLE BY, THE POTENTIAL DIFFERENCE BETWEEN A STRUCTURE BEING PROTECTED AN A REFERENCE ELECTRODE LOCATED IN THE VICINITY OF THE STRUCTURE, SAID DEVICE FURTHER INCLUDING A COUNTER, A TIME DEVICE AND A BATTERY CONNECTED IN A FIRST CIRCUIT CONTROLLED BY SAID RELAY, SAID RELAY BEING ADJUSTED TO CLOSE THE FIRST CIRCUIT UPON DEVIATION OF SAID POTENTIAL BEYOND A PREDETERMINED VALUE, SOLELY FOR THE DURATION OF SAID DEVIATION, TO TRIGGER THE COUNTER TO COUNT AND RECORD THE NUMBER OF DEVIATIONS AND TO TRIGGER THE TIMING DEVICE TO RECORD THE TOTAL DURATION OF SAID DEVIATIONS.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |