Patent US2632747A successfully refreshed from Google Patents.
Patent US2907701A successfully refreshed from Google Patents.
US2907701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing electroplated containers
Assignee: Rheem Manufacturing Co
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Filing: 1956-02-29
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Granted: 1959-10-06
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Expires: 1976-02-29
Abstract
No abstract record available.
Inventors
- 👤 Leland L Peart
- 👤 Kettman Joseph Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:50
CPC Classifications
C; C25; C25D; C25D7/00; C25D7/04; B; B21; B21B; B21B15/00; B21B15/0085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
THE METHOD OF CONSTRUCTING CYLINDRICAL METAL SHELLS WHICH COMPRISES WELDING OPPOSITE EDGES OF A ROLLED PLATE TO PROVIDE A CYLINDRICAL SHELL HAVING A LONGITUDINALLY EXTENDING SIDE SEAM, STRIPPING EXCESS WELD MATERIAL FROM SAID SEAM TO LEAVE FLAT RAISED SURFACES OF WELD MATERIAL ALONG SUCH SEAM, APPLYING PRESSURE TO SAID WELD SEAM IN A DIRECTION GENERALLY NORMAL TO THE PLANE THEREOF TO COMPACT THE WELD METAL TO AN EXTEND TO BE SUBSTANTIALLY FLUSH AND CONTINUOUS WITH THE INNER PERIPHERAL SURFACE OF SAID SHELL ADJACENT THE SEAM, ELECTROLYTICALLY DEPOSITING A LAYER OF METAL UPON THE INNER SURFACE OF SAID SHELL, AND THEN FUSING SAID METAL BY IMMERSING THE SHELL INTO A HOT MINERAL OIL BATH CONTAINING FROM 2.5 TO 15% OF FREE FATTY ACID MAINTAINED AT A TEMPERATURE ABOVE THE MELTING POINT OF THE METAL.
Claim 2
Independent Claim
133 words
THE METHOD OF CONSTRUCTING CYLINDRICAL METAL SHELLS WHICH COMPRISES WELDING OPPOSITE EDGES OF A ROLLED PLATE TO PROVIDE A CYLINDRICAL SHELL HAVING A LONGITUDINALLY EXTENDING SIDE SEAM, STRIPPING EXCESS WELD MATERIAL FROM SAID SEAM TO LEAVE FLAT RAISED SURFACES OF WELD MATERIAL ALONG SUCH SEAM, APPLYING PRESSURE TO SAID WELD SEAM IN A DIRECTION GENERALLY NORMAL TO THE PLANE THEREOF TO COMPACT THE WELD METAL TO AN EXTEND TO BE SUBSTANTIALLY FLUSH AND CONTINUOUS WITH THE INNER PERIPHERAL SURFACE OF SAID SHELL ADJACENT THE SEAM, ELECTROLYTICALLY DEPOSITING A LAYER OF METAL UPON THE INNER SURFACE OF SAID SHELL, AND THEN FUSING SAID METAL BY IMMERSING THE SHELL INTO A HOT MINERAL OIL BATH CONTAINING FROM 2.5 TO 15% OF FREE FATTY ACID MAINTAINED AT A TEMPERATURE ABOVE THE MELTING POINT OF THE METAL.
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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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |