Patent US2836884A successfully refreshed from Google Patents.
US2836884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hollow metal articles
Assignee: Huntington Alloys Corp
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Filing: 1955-04-22
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Granted: 1958-06-03
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Expires: 1975-04-22
Abstract
No abstract record available.
Inventors
- 👤 Graham Alexander Barbour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:14
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/02; B21; B21C; B21C23/00; B21C23/01; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49339; Y10T29/49341; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
THE METHOD FOR PRODUCING A HOLLOW METAL ARTICLE HAVING AT LEAST ONE INTERNAL PASSAGE OR CAVITY COMPRISING ELECTRICALLY ERODING A METAL BILLET TO PROVIDE THEREIN AT LEAST ONE LONGITUDINALLY LOCATED, ANNULAR, BLIND HOLE HAVING INNER AND OUTER WALLS DEFINING A SUBSTANTIALLY CONCENTRIC, INTEGRAL CORE OF BILLET METAL, SAID ELECTRIC EROSION OPERATION BEING PERFORMED WHILE UTILIZING A PERFORMED METAL ELECTRODE SLEEVE; LEAVING SAID ELECTRODE SLEEVE IN SITU TO THEREBY PROVIDE A FILLER MATERIAL IN SAID CORED HOLE; HOT WORKING THE RESULTING BILLET IN A DIRECTION PARALLEL TO SAID FILLED, CORED HOLE TO CHANGE THE CROSS SECTION OF SAID BILLET AND SAID CORED HOLE; AND REMOVING THE FILLER MATERIAL AND CORE FROM EACH HOLE TO PROVIDE A WORKED METAL ARTICLE HAVING AT LEAST ONE PASSAGE OR CAVITY THEREIN.
Claim 2
Independent Claim
126 words
THE METHOD FOR PRODUCING A HOLLOW METAL ARTICLE HAVING AT LEAST ONE INTERNAL PASSAGE OR CAVITY COMPRISING ELECTRICALLY ERODING A METAL BILLET TO PROVIDE THEREIN AT LEAST ONE LONGITUDINALLY LOCATED, ANNULAR, BLIND HOLE HAVING INNER AND OUTER WALLS DEFINING A SUBSTANTIALLY CONCENTRIC, INTEGRAL CORE OF BILLET METAL, SAID ELECTRIC EROSION OPERATION BEING PERFORMED WHILE UTILIZING A PERFORMED METAL ELECTRODE SLEEVE; LEAVING SAID ELECTRODE SLEEVE IN SITU TO THEREBY PROVIDE A FILLER MATERIAL IN SAID CORED HOLE; HOT WORKING THE RESULTING BILLET IN A DIRECTION PARALLEL TO SAID FILLED, CORED HOLE TO CHANGE THE CROSS SECTION OF SAID BILLET AND SAID CORED HOLE; AND REMOVING THE FILLER MATERIAL AND CORE FROM EACH HOLE TO PROVIDE A WORKED METAL ARTICLE HAVING AT LEAST ONE PASSAGE OR CAVITY THEREIN.
References Cited (Backward Citations)
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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) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |