US2947680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple disc anode
Assignee: Individual
•
Filing: 1957-12-02
•
Granted: 1960-08-02
•
Expires: 1977-12-02
Abstract
No abstract record available.
Inventors
- 👤 Herman S Preiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:00
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/18; C23F13/10; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/556; Y10T403/559; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A CATHODIC PROTECTION DEVICE FOR PROTECTING THE INTERIOR SURFACE OF A VESSEL HAVING AN APERTURE IN A WALL THEREOF, SAID DEVICE COMPRISING A PLUG ADAPTED FOR CLOSING THE APERTURE IN THE VESSEL, SAID PLUG HAVING A THREADED AXIAL RECESS FORMED IN THE INNER END THEREOF, AN ELONGATED MULTIPLE DISC ASSEMBLY FIXED TO THE INNER END OF SAID PLUG AND ADAPTED TO EXTEND WITHIN THE VESSEL, SAID MULTIPLE DISC ASSEMBLY COMPRISING A PLURALITY OF DISCS EACH HAVING A CATHOLIC CORE AND A SACRIFICIAL ANODIC SLEEVE FIRMLY BONDED TO THE CORE, THE CORE BEING LONGER THAN THE SLEEVE AND EACH OF THE CATHODIC CORES HAVING A
Claim 2
Dependent Claim
104 words
A CATHODIC PROTECTION DEVICE FOR PROTECTING THE INTERIOR SURFACE OF A VESSEL HAVING AN APERTURE IN A WALL THEREOF, SAID DEVICE COMPRISING A PLUG ADAPTED FOR CLOSING THE APERTURE IN THE VESSEL, SAID PLUG HAVING A THREADED AXIAL RECESS FORMED IN THE INNER END THEREOF, AN ELONGATED MULTIPLE DISC ASSEMBLY FIXED TO THE INNER END OF SAID PLUG AND ADAPTED TO EXTEND WITHIN THE VESSEL, SAID MULTIPLE DISC ASSEMBLY COMPRISING A PLURALITY OF DISCS EACH HAVING A CATHOLIC CORE AND A SACRIFICIAL ANODIC SLEEVE FIRMLY BONDED TO THE CORE, THE CORE BEING LONGER THAN THE SLEEVE AND EACH OF THE CATHODIC CORES HAVING A
References Cited (Backward Citations)
GB189914818A
Cited
US1008002A
Cited
US1547984A
Cited
US1709523A
Cited
US2666027A
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US2609340A
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US2809932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |