Patent US3554874A successfully refreshed from Google Patents.
US3554874A
Expired / Lapsed
US
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Method of electroforming vessels
Assignee: ThyssenKrupp Budd Co
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Filing: 1968-05-31
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Granted: 1971-01-12
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Expires: 1988-05-31
Abstract
Abstract A METHOD OF ECECTROFORMING A VESSEL INCLUDES FIRST CASTING A HOLLOW FLEXIBLE BODY INSIDE A MOLD. THE FLEXIBLE BODY IS THEN COLLAPSED, TAKEN OUT OF THE MOLD AND INSERTED INSIDE A TWO-PIECE MOLD. THE FLEXIBLE BODY IS THEN FILLED WITH A CASTABLE MATERIAL TO FORM A MANDREL AND THE TWO-PIECE MOLD IS THEN REMOVED. METAL IS THEN ELECTRODEPOSITED ON THE MANDREL WHICH INCLUDES THE FLEXIBLE BODY AND CASTABLE MATERIAL. THE CASTABLE MATERIAL IS THEN REMOVED AFTER WHICH THE FLEXIBLE MATERIAL IS REMOVED LEAVING THE ELECTROFORMED VESSEL.
Inventors
- 👤 Michael Mattia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:43
CPC Classifications
C; C25; C25D; C25D1/00; C25D1/02; C25D1/20
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |