US3359624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe lining method
Assignee: Vetco Gray LLC
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Filing: 1965-11-29
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Granted: 1967-12-26
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Expires: 1985-11-29
Abstract
No abstract record available.
Inventors
- 👤 Donald V Cours
- 👤 John K Mcgee
- 👤 Harold L Lafferty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:01
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/033; B21D26/035; B21D26/045; B21D26/047; F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49764; Y10T29/49771; Y10T29/49776; Y10T29/49805; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A METHOD FOR LINING A PIPE HAVING A THROUGHBORE SURROUNDED BY AN INNER PERIPHERAL SURFACE COMPRISING: DISPOSING A LINER IN THE THROUGHBORE, SAID LINER HAVING OPPOSITE END PORTIONS PROTRUDING FROM EACH END OF THE PIPE SUFFICIENTLY TO PROVIDE FOR AXIAL CONTRACTION OF THE LINER DURING RADIAL EXPANSION OF THE LINER HAVING A THROUGHBORE AND HAVING AN OUTER PERIPHERAL SURFACE INITIALLY SMALLER DIAMETER THAN SAID PIPE INNER PERIPHERAL SURFACE; ENCLOSING EACH LINER PROTRUDING END PORTION WITH A FIXTURE, FORMING A CIRCUMFERENTIAL SEAL BETWEEN THE OUTER PERIPHERAL SURFACE OF THE LINER AT EACH LINER PROTRUDING END PORTION AND EACH FIXTURE; DISPOSING A FLUID INTO SAID LINER THROUGHBORE; PRESSURIZING SAID FLUID WHILE VENTING THE ANNULUS DEFINED BETWEEN THE OUTER PERIPHERAL SURFACE OF SAID LINER, THE INNER PERIPHERAL SURFACE OF SAID PIPE AND BETWEEN SAID CIRCUMFERENTIAL SEALS, THE PRESSURIZATION BEING SUFFICIENT TO ELIMINATE SAID ANNULUS BY PLASTICALLY EXPANDING SAID LINER OUTER PERIPHERAL SURFACE RADIALLY AND CONTRACTING SAID LINER AXIALLY INTO INTIMATE CONTACT WITH THE INNER PERIPHERAL SURFACE OF SAID PIPE THROUGHOUT THE LENGTH OF THE PIPE.
Claim 2
Independent Claim
172 words
A METHOD FOR LINING A PIPE HAVING A THROUGHBORE SURROUNDED BY AN INNER PERIPHERAL SURFACE COMPRISING: DISPOSING A LINER IN THE THROUGHBORE, SAID LINER HAVING OPPOSITE END PORTIONS PROTRUDING FROM EACH END OF THE PIPE SUFFICIENTLY TO PROVIDE FOR AXIAL CONTRACTION OF THE LINER DURING RADIAL EXPANSION OF THE LINER HAVING A THROUGHBORE AND HAVING AN OUTER PERIPHERAL SURFACE INITIALLY SMALLER DIAMETER THAN SAID PIPE INNER PERIPHERAL SURFACE; ENCLOSING EACH LINER PROTRUDING END PORTION WITH A FIXTURE, FORMING A CIRCUMFERENTIAL SEAL BETWEEN THE OUTER PERIPHERAL SURFACE OF THE LINER AT EACH LINER PROTRUDING END PORTION AND EACH FIXTURE; DISPOSING A FLUID INTO SAID LINER THROUGHBORE; PRESSURIZING SAID FLUID WHILE VENTING THE ANNULUS DEFINED BETWEEN THE OUTER PERIPHERAL SURFACE OF SAID LINER, THE INNER PERIPHERAL SURFACE OF SAID PIPE AND BETWEEN SAID CIRCUMFERENTIAL SEALS, THE PRESSURIZATION BEING SUFFICIENT TO ELIMINATE SAID ANNULUS BY PLASTICALLY EXPANDING SAID LINER OUTER PERIPHERAL SURFACE RADIALLY AND CONTRACTING SAID LINER AXIALLY INTO INTIMATE CONTACT WITH THE INNER PERIPHERAL SURFACE OF SAID PIPE THROUGHOUT THE LENGTH OF THE PIPE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |