Patent US3267563A successfully refreshed from Google Patents.
US3267563A
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Method of producing composite tubes
Assignee: WOLVERINE ACQUISITION CORP A DE CORP
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Filing: 1963-09-30
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Granted: 1966-08-23
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Seaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:28
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/08; F28F21/081; F28F21/085; B; B21; B21C; B21C1/00; B21C1/16; B21C1/22; B21C23/00; B21C23/02; B21C23/04; B21C23/08; B21C23/10; B21C23/22; B21C37/00; B21C37/06; B21C37/15; B21C37/154; B21C37/20; B21C37/202; B21D; B21D53/00; B21D53/02; B21D53/08; B23; B23K; B23K20/00; B23K20/22; B23K20/233; B23K20/2333; B23K31/00; B23K31/02; B23K31/027; F28D; F28D7/00; F28D7/10; F28F1/00; F28F1/003; F28F1/10; F28F1/40; F28F19/00; F28F19/02; F28F19/06; F28F21/084; F28D21/00; F28D2021/0019; F28D2021/0068; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49361; Y10T29/49377; Y10T29/49378; Y10T29/49384; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE METHOD OF MAKING A COMPOSITE TUBULAR DEVICE WHICH COMPRISES EXTRUDING A LINER TUBE HAVING A SMOOTH OUTER SURFACE AND A FINNED INNER SURFACE, ASSEMBLING OVER SAID LINER TUBE A SHROUD TUBE HAVING SMOOTH INNER AND OUTER SURFACES AND HAVING A YIELD STRENGTH SUBSTANTIALLY LESS THAN THE YIELD STRENGTH OF THE LINER TUBE, SINKING THE SHROUD TUBE ONTO THE LINER TUBE BY DRAWING THE ASSEMBLY THROUGH A DIE SIZED TO MATERIALLY STRESS THE LINER TUBE.
Claim 2
Independent Claim
75 words
THE METHOD OF MAKING A COMPOSITE TUBULAR DEVICE WHICH COMPRISES EXTRUDING A LINER TUBE HAVING A SMOOTH OUTER SURFACE AND A FINNED INNER SURFACE, ASSEMBLING OVER SAID LINER TUBE A SHROUD TUBE HAVING SMOOTH INNER AND OUTER SURFACES AND HAVING A YIELD STRENGTH SUBSTANTIALLY LESS THAN THE YIELD STRENGTH OF THE LINER TUBE, SINKING THE SHROUD TUBE ONTO THE LINER TUBE BY DRAWING THE ASSEMBLY THROUGH A DIE SIZED TO MATERIALLY STRESS THE LINER TUBE.
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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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |