Patent US2970950A successfully refreshed from Google Patents.
US2970950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the continuous galvanization of the inner surface of tubes
Assignee: Benteler Corp
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Filing: 1959-01-15
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Granted: 1961-02-07
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Expires: 1979-01-15
Abstract
No abstract record available.
Inventors
- 👤 Bahmann Hans-Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:03
CPC Classifications
C; C25; C25D; C25D7/00; C25D7/04; Y; Y10; Y10S; Y10S118/00; Y10S118/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
METHOD OF ELECTROPLATING IN CONTINUOUS OPERATION THE INNER SURFACR OF TUBES HAVING IMPERMEABLE WALLS AND INTERNAL DIAMETERS DOWN TO 3 MM., COMPRISING THE STEPS OF PASSING CATHODE-CONNECTED TUBES CONTINUOUSLY ONLY AFTER ANOTHER THROUGH BATH TANKS FILLED WITH TREATMENT LIQUIDS AND AT THE SAME TIME FEEDING THEM ALONG AN AXIALLY ARRANGED STATIONARY ANODE WHICH THEY SURROUND, SUPPLYING UNINTERRUPTED CURRENT TO THE ANODE DURING THE MOVEMENT OF THE TUBES THROUGH THE PLANT IN LOGITUDINAL DIRECTION, AUTOMATICALLY SUCKING THE TREATMENT LIQUIDS OF THE INDIVIDUAL BATH TANKS INTO THE INTERIOR OF THE TUBES, PRESSING IT THERETHROUGH AND, AS SOON AS THE REAR END OF A TUBE IS FREE, PUMPING THE LIQUID BACK INTO THE RESPECTIVE BATH TANK.
Claim 2
Dependent Claim
113 words
METHOD OF ELECTROPLATING IN CONTINUOUS OPERATION THE INNER SURFACR OF TUBES HAVING IMPERMEABLE WALLS AND INTERNAL DIAMETERS DOWN TO 3 MM., COMPRISING THE STEPS OF PASSING CATHODE-CONNECTED TUBES CONTINUOUSLY ONLY AFTER ANOTHER THROUGH BATH TANKS FILLED WITH TREATMENT LIQUIDS AND AT THE SAME TIME FEEDING THEM ALONG AN AXIALLY ARRANGED STATIONARY ANODE WHICH THEY SURROUND, SUPPLYING UNINTERRUPTED CURRENT TO THE ANODE DURING THE MOVEMENT OF THE TUBES THROUGH THE PLANT IN LOGITUDINAL DIRECTION, AUTOMATICALLY SUCKING THE TREATMENT LIQUIDS OF THE INDIVIDUAL BATH TANKS INTO THE INTERIOR OF THE TUBES, PRESSING IT THERETHROUGH AND, AS SOON AS THE REAR END OF A TUBE IS FREE, PUMPING THE LIQUID BACK INTO THE RESPECTIVE BATH TANK.
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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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |