US3099860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing tubular products from plastic materials
Assignee: Oerlikon Barmag AG
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Filing: 1961-06-26
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Granted: 1963-08-06
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Expires: 1981-06-26
Abstract
No abstract record available.
Inventors
- 👤 Schippers Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:22
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
AN AXIAL NOZZLE HEAD FOR PRODUCING TUBULAR STRUCTURES OF THERMOPLASTIC MATERIAL WHICH COMPRISES A MANDREL, AN ANNULAR THROUGHPUT PASSAGE SURROUNDING SAID MANDREL, SAID PASSAGE BEING DEFINED BY SAID MANDREL AND THE CASING OF SAID NOZZLE HEAD, AND RADIALLY DISPOSED FINS ATTACHED TO SAID MANDREL AND SAID CASING, SAID FINS ACTING AS SUPPORT MEMBERS FOR SAID MANDREL, SAID FINS HAVING THE SHAPE OF A RHOMBOID SHIP''S HULL WHOSE BOW AND STERN ARE TWISTED OPPOSITELY WITH RESPECT TO THE PLANE OF SYMMETRY OF THE FIN IN ITS LONGITUDINAL DIRECTION.
References Cited (Backward Citations)
US2192263A
Cited
US2354363A
Cited
US2480838A
Cited
US2740160A
Cited
US2979772A
Cited
FR1237535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-05 | 1967-02-04 | 1967-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-05 | 1971-02-04 | 1971-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-05 | 1975-02-04 | 1975-08-06 | $7700.00 | Window Closed / Lapsed |