Patent US2848401A successfully refreshed from Google Patents.
US2848401A
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US
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Method of electrolytically rifling gun barrels
Assignee: Olin Corp
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Filing: 1953-05-07
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Granted: 1958-08-19
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Expires: 1973-05-07
Abstract
No abstract record available.
Inventors
- 👤 James C Hartley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:07
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/02; C25F3/14; B; B23; B23H; B23H9/00; B23H9/14; C25F7/00; F; F41; F41A; F41A21/00; F41A21/16; F41A21/18; B23H3/00; B23H3/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
IN THE METHOD OF RIFLING THE BORE OF A GUN BARREL BY ANODIC DISSOLUTION OF PORTIONS OF THE BORE IN THE PRESENCE OF A SUITABLE ELECTROLYTE SOLUTION, THE STEPS WHICH INCLUDE TEMPORATILY MASKING AGAINST ACCESS BY THE ELECTROLYTE ONLY THOSE WALL PORTIONS OF THE BORE WHICH ARE ADAPTED TO FORM THE LANDS OF THE RIFLING; POSITIONING A CATHODE MEMBER IN SAID BORE IN SPACED RELATION TO THE WALL THEREOF; INTRODUCING INTO THE BORE SURROUNDING SAID CATHODE MEMBER AN ELECTROLYTE SOLUTION OPERATIVE FOR ANODIC DISSOLUTION OF THE EXPOSED WALL PORTIONS OF THE BORE; PASSING AN ELECTRIC CURRENT OF INSUFFICIET MAGNITUDE
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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) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |