US2725354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of and apparatus for electropolishing metallic articles
Assignee: AT&T Inc
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Filing: 1951-10-18
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Granted: 1955-11-29
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Expires: 1971-10-18
Abstract
No abstract record available.
Inventors
- 👤 Guy E Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:21
CPC Classifications
C; C25; C25F; C25F7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE METHOD OF ELECTROPOLISHING METALLIC FILAMENTS, WHICH COMPRISES CONTINUOUSLY ADVANCING A METALLIC FILAMENT LONGITUDINALLY ALONG A PREDETERMINED STRAIGHT PATH THROUGH AN ELECTROLYTIC BATH, ADVANCING A PAIR OF FLAT METAL TAPES THROUGH THE BATH ALONG STRAIGHT PATHS CONVERGING WITH RESPECT TO THE PATH OF FILAMENT AND ON OPPOSITE SIDES THEREOF FROM THE ENTRANCE END TO THE EXIT END OF THE BATH, PROGRESSIVELY BENDING THE TAPES TRANSVERSELY INTO A TUBE SURROUNDING THE FILAMENT AS THEY ARE ADVANCED ALONG SAID PATHS THEREOF, AND CREATING A SUFFICIENT DIFFERENCE OF POTENTIAL BETWEEN THE FILAMENT AND THE TAPES TO POLISH THE SURFACE OF THE FILAMENT.
Claim 2
Independent Claim
99 words
THE METHOD OF ELECTROPOLISHING METALLIC FILAMENTS, WHICH COMPRISES CONTINUOUSLY ADVANCING A METALLIC FILAMENT LONGITUDINALLY ALONG A PREDETERMINED STRAIGHT PATH THROUGH AN ELECTROLYTIC BATH, ADVANCING A PAIR OF FLAT METAL TAPES THROUGH THE BATH ALONG STRAIGHT PATHS CONVERGING WITH RESPECT TO THE PATH OF FILAMENT AND ON OPPOSITE SIDES THEREOF FROM THE ENTRANCE END TO THE EXIT END OF THE BATH, PROGRESSIVELY BENDING THE TAPES TRANSVERSELY INTO A TUBE SURROUNDING THE FILAMENT AS THEY ARE ADVANCED ALONG SAID PATHS THEREOF, AND CREATING A SUFFICIENT DIFFERENCE OF POTENTIAL BETWEEN THE FILAMENT AND THE TAPES TO POLISH THE SURFACE OF THE FILAMENT.
References Cited (Backward Citations)
AT119031B
Cited
US2330562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |