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Patent US3660264A successfully refreshed from Google Patents.
US3660264A
Expired / Lapsed
US
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Sacrificial anode assembly for vessel interiors
Assignee: Dow Chemical Co
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Filing: 1970-07-22
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Granted: 1972-05-02
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Expires: 1990-07-22
Abstract
Abstract Sacrificial anode assemblies for the protection of vessel interiors are provided with means for adjusting anode surface exposure to maintain a uniformly protective potential. A packing gland assembly positioned within a port in a vessel wall allows adjustment of anode exposure from the outside of the vessel. The sacrificial anode is in the form of a rod which may be moved in or out against the frictional engagement of a seal ring compressed within the packing gland.
Inventors
- 👤 Karl Wilhelm Schuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:00
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |