Patent US3562897A successfully refreshed from Google Patents.
US3562897A
Expired / Lapsed
US
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Explosion bonding of tubes
Assignee: ETI EXPLOSIVES TECHNOLOGIES INTE
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Filing: 1968-11-27
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Granted: 1971-02-16
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Expires: 1988-11-27
Abstract
Abstract IN THE PROCESS FOR METALLURGICALLY BONDING A LINING TUBE TO THE INSIDE OF A SECOND TUBE BY PROPELLING THE LINING TUBE INTO A PROGRESSIVE COLLISION WITH THE SECOND TUBE BY DETONATING AN EXPLOSIVE CHARGE WITHIN THE LINING TUBE, IMPROVED BONDING AT THE INITIALLY COOLIDING TUBE ENDS IS OBTAINED BY EMPLOYING, AT THE INITIATION END OF THE EXPLOSIVE CHARGE, AN EXPLOSIVE WHICH HAS A HIGHER DETONATION VELOCITY AND/OR EXPLOSIVE LOADING THAN THE EXPLOSIVE WHICH EXTENDS THROUGH THE REMAINING LENGTH OF THE LINING TUBE.
Inventors
- 👤 Joseph Buchwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:20
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/06; B23K20/08; B23K20/085
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |