US2758366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making flexible pipe
Assignee: Phillips Petroleum Co
•
Filing: 1951-01-02
•
Granted: 1956-08-14
•
Expires: 1971-01-02
Abstract
No abstract record available.
Inventors
- 👤 Gustaaf A J Voetelink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:54
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/12; B21C37/123; Y; Y10; Y10S; Y10S228/00; Y10S228/903; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984; Y10T29/49842
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A METHOD FOR PRODUCING A FLEXIBLE PIPE ASSEMBLY COMPRISING INFLATING A COLLAPSIBLE CYLINDRICAL TUBE OF RESILIENT MATERIAL BY INJECTING AIR THEREINTO, WRAPPING A FIRST METAL RIBBON HAVING A FLANGE ALONE ONE EDGE AND A GROOVE ALONG ITS OTHER EDGE, SPIRALLY AROUND AND IN DIRECT CONTACT WITH THE INFLATED TUBE SO THAT THE FLANGE OF ONE TURN EXTENDS INTO THE GROOVE OF THE NEXT SUBSEQUENT TURN OF RIBBON IN SUCH A MANNER AS TO INTERLOCK EACH PAIR OF SUCCESSIVE TURNS OF THE RIBBON, EMBEDDING THE INFLATED TUBE INTO SAID FIRST SPIRAL METAL RIBBON BY HEATING SAID TUBE AND FIRST METAL RIBBON, WRAPPING A SECOND METAL RIBBON, HAVING A FLANGE ALONG ONE EDGE AND A GROOVE ALONG ITS OTHER EDGE, SPIRALLY AROUND AND IN CONTACT WITH SAID FIRST RIBBON IN THE OPPOSITE DIERECTION TO THAT OF SAID FIRST RIBBON, AND SO THAT THE FLANGE OF ONE TURN EXTENDS INTO THE GROOVE OF THE NEXT SUBSEQUENT TURN OF SAID SECOND RIBBON IN SUCH A MANNER AS TO INTERLOCK EACH PAIR OF SUCCESSIVE TURNS OF THE RIBBON, VENTING SAID AIR FROM SAID TUBE AND RECOVERING THE METAL WINDINGS AND EMBEDDED TUBE AS THE FLEXIBLE PIPE ASSEMBLY.
Claim 2
Independent Claim
192 words
A METHOD FOR PRODUCING A FLEXIBLE PIPE ASSEMBLY COMPRISING INFLATING A COLLAPSIBLE CYLINDRICAL TUBE OF RESILIENT MATERIAL BY INJECTING AIR THEREINTO, WRAPPING A FIRST METAL RIBBON HAVING A FLANGE ALONE ONE EDGE AND A GROOVE ALONG ITS OTHER EDGE, SPIRALLY AROUND AND IN DIRECT CONTACT WITH THE INFLATED TUBE SO THAT THE FLANGE OF ONE TURN EXTENDS INTO THE GROOVE OF THE NEXT SUBSEQUENT TURN OF RIBBON IN SUCH A MANNER AS TO INTERLOCK EACH PAIR OF SUCCESSIVE TURNS OF THE RIBBON, EMBEDDING THE INFLATED TUBE INTO SAID FIRST SPIRAL METAL RIBBON BY HEATING SAID TUBE AND FIRST METAL RIBBON, WRAPPING A SECOND METAL RIBBON, HAVING A FLANGE ALONG ONE EDGE AND A GROOVE ALONG ITS OTHER EDGE, SPIRALLY AROUND AND IN CONTACT WITH SAID FIRST RIBBON IN THE OPPOSITE DIERECTION TO THAT OF SAID FIRST RIBBON, AND SO THAT THE FLANGE OF ONE TURN EXTENDS INTO THE GROOVE OF THE NEXT SUBSEQUENT TURN OF SAID SECOND RIBBON IN SUCH A MANNER AS TO INTERLOCK EACH PAIR OF SUCCESSIVE TURNS OF THE RIBBON, VENTING SAID AIR FROM SAID TUBE AND RECOVERING THE METAL WINDINGS AND EMBEDDED TUBE AS THE FLEXIBLE PIPE ASSEMBLY.
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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) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |