Patent US2730762A successfully refreshed from Google Patents.
US2730762A
Expired / Lapsed
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Apparatus for the continuous fabrication of reinforced tubing
Assignee: Akzo Nobel UK PLC
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Filing: 1953-04-21
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Granted: 1956-01-17
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Expires: 1973-04-21
Abstract
No abstract record available.
Inventors
- 👤 Hyde W Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:56
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/11; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/15; B29C48/151; B29C48/152; B29C48/153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
AN APPARATUS FOR CONTINUOUSLY FABRICATING REINFORCED FLEXIBLE TUBING COMPRISING A STATINARY CYLINDRICAL MANDREL SUPPORTED AT ONE END, MEANS ADJACENT SAID SUPPORTED END FOR WINDING A REINFORCING HELICAL STRAND AROUND SAID MANDREL, AN ANNULAR EXTRUSION NOZZLE IN THE MANDREL AT THE OPPOSITE END THEREOF, A SECOND ANNULAR EXTRUSION NOZZLE SURROUNDING SAID OTHER END OF THE MANDREL, MEANS POSITIONED TO CONTACT THE BORE OF A SYNTHETIC PLASTIC SHEATH EXTRUDED FROM SAID NOZZLES, AND MEANS COOPERATING WITH SAID LAST-NAMED MEANS TO PRESSURE SEAL SAID SYNTHETIC PLASTIC SHEATH AROUND THE HELICAL STRAND.
Claim 2
Independent Claim
88 words
AN APPARATUS FOR CONTINUOUSLY FABRICATING REINFORCED FLEXIBLE TUBING COMPRISING A STATINARY CYLINDRICAL MANDREL SUPPORTED AT ONE END, MEANS ADJACENT SAID SUPPORTED END FOR WINDING A REINFORCING HELICAL STRAND AROUND SAID MANDREL, AN ANNULAR EXTRUSION NOZZLE IN THE MANDREL AT THE OPPOSITE END THEREOF, A SECOND ANNULAR EXTRUSION NOZZLE SURROUNDING SAID OTHER END OF THE MANDREL, MEANS POSITIONED TO CONTACT THE BORE OF A SYNTHETIC PLASTIC SHEATH EXTRUDED FROM SAID NOZZLES, AND MEANS COOPERATING WITH SAID LAST-NAMED MEANS TO PRESSURE SEAL SAID SYNTHETIC PLASTIC SHEATH AROUND THE HELICAL STRAND.
References Cited (Backward Citations)
US2002896A
Cited
US2366087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |