US3555604A
Expired / Lapsed
US
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Biaxial orientation
Assignee: Union Carbide Corp
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Filing: 1968-12-05
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Granted: 1971-01-19
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Expires: 1988-12-05
Abstract
Abstract APPARATUS FOR BIAXIALLY ORIENTING THERMOPLASTIC TUBING COMPRISES A RADIANT HEATER SYSTEM, MEANS FOR PASSING TUBING UPWARDLY THROUGH SAID HEATER SYSTEM AND FOR ISOLATING A BUBBLE OF FLUID WITHIN THE TUBING IN ITS UPWARD TRAVEL. THE RADIANT HEATER SYSTEM COMPRISES A PLURALITY OF STACKED HEATERS SPACED APART PROVIDING FOR ACCESS OF COOLANT FLUID TO THE TUBING IN ITS UPWARD PASSAGE AND BETWEEN HEATERS A CONDUIT FOR DIRECTING HIGH VELOCITY COOLANT FLUID UPWARDLY AGAINST THE TUBING IS PROVIDED.
Inventors
- 👤 Heinz Erich Pahlke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:44
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/96; B29C48/965; B29C48/36; B29C48/50; B29C48/76; B29C48/768; B29C48/001; B29C48/0018; B29C48/0019; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |