Patent US3562887A successfully refreshed from Google Patents.
US3562887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive expansion of liner sleeves
Assignee: Foster Wheeler Inc
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Filing: 1968-05-08
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Granted: 1971-02-16
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Expires: 1988-05-08
Abstract
Abstract BY USE OF AN EXPLOSIVE CHARGE TOGETHER WITH AN ACCOMPANYING MEDIUM TWO CONCENTRIC TUBES MAY BE EXPANDED AT THE SAME TIME, WITH THE INNER TUBE OR LINER SLEEVE EXPANDING AND LOCKING TO THE OUTER TUBE AND THE OUTER TUBE EXPANDING INTO A TUBE HOLE IN A TUBESHEET OR HEAT TRANSFER MEDIUM. IN CASES WHERE THE INNER TUBE DOES NOT EXTEND THE FULL LENGTH THAT MUST BE EXPANDED IN THE OUTER TUBE THE MEDIUM OR EXPLOSIVE MAY BE SHAPED TO PROVIDE THE PROPER FORCE REQUIRED AT EACH SECTION.
Inventors
- 👤 Joseph W Schroeder
- 👤 Herman P Smith
- 👤 Irwin Berman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:18
CPC Classifications
F; F28; F28F; F28F19/00; F28F19/002; B; B21; B21D; B21D39/00; B21D39/04; B21D39/042; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49375; Y10T29/49805
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 |