US3560349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electroforming containers having openings with thick sections at the openings
Assignee: ThyssenKrupp Budd Co
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Filing: 1968-05-01
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Granted: 1971-02-02
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Expires: 1988-05-01
Abstract
Abstract D R A W I N G A METHOD OF ELECTROFORMING A CONTAINER HAVING A THICKENED SECTION AT AN OPENING IS PROVIDED. A CATHODIC ELECTRODE SURFACE IS APPLIED ON THE ENTIRE AREA OF AN EXPENDABLE MANDREL EXCEPT FOR AN AREA AT WHICH AN OPENING IS TO BE PROVIDED. THE MANDREL IS THEN PLACED IN A BATH OF ELECTRICALLY CONDUCTIVE SOLUTION. SEPARATE POWER SOURCES ARE APPLIED TO A PLURALITY OF ANODES. ON E OF THE ANODES IS DISPOSED RELATIVELY CLOSE TO THE AREA AT WHICH AN OPENING IS TO BE FORMED THEREBY PROVIDING A RELATIVELY THICKENED PORTION OF ELECTRODEPOSITED MATERIAL WITH RESPECT TO THE MATERIAL DEPOSITED ON THE MAIN SURFACE OF THE MANDREL.
Inventors
- 👤 Michael Mattia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:04
CPC Classifications
C; C25; C25D; C25D1/00
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |