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Patent US3294882A successfully refreshed from Google Patents.
US3294882A
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Film forming method and apparatus
Assignee: Union Carbide Corp
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Filing: 1963-10-24
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Granted: 1966-12-27
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Expires: 1983-10-24
Abstract
No abstract record available.
Inventors
- 👤 Lutzmann Hans Harald
- 👤 Raley Garland Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:11
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/10; B29C48/001; B29C48/0018; B29C48/0019; B29C48/25; B29C48/88; B29C48/90; B29C48/901; B29C48/902; B29C48/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
METHOD FOR THE PRODUCTION OF THERMOPLASTIC TUBING COMPRISING EXTRUDING FROM AN ANNULAR DIE THERMOPLASTIC TUBING IN THE FORMATIVE PLASTIC STATE, DRAWING THE TUBING OVER A COOLING MEANS SPACED FROM THE DIE AND POSITIONED INTERIORLY OF THE TUBING, SUPPORTING THE TUBING PASSING OVER THE COOLING MEANS HAVING A THIN ADHERENT COATING OF ABRASION RESISTANT MATERIAL WITH A PLURRALITY OF SPACED PROTUBERANCES EXTENDING LATERALLY FROM THE CORE, MAINING MEANS AND HAVING WALLS AND PLATEAUS OF A SIZE AND NUMBER SUFFICIENT TO CARRY SAID TUBING OFF THE CORE, MAINTAINING THE TUBING IN ACTUAL CONTACT WITH SAID PLATEAUS AND MAINTAINING A LAYER OF AIR BETWEEN THE TUBING AND THE CORE OF THE COOLING MEANS.
Claim 2
Dependent Claim
110 words
METHOD FOR THE PRODUCTION OF THERMOPLASTIC TUBING COMPRISING EXTRUDING FROM AN ANNULAR DIE THERMOPLASTIC TUBING IN THE FORMATIVE PLASTIC STATE, DRAWING THE TUBING OVER A COOLING MEANS SPACED FROM THE DIE AND POSITIONED INTERIORLY OF THE TUBING, SUPPORTING THE TUBING PASSING OVER THE COOLING MEANS HAVING A THIN ADHERENT COATING OF ABRASION RESISTANT MATERIAL WITH A PLURRALITY OF SPACED PROTUBERANCES EXTENDING LATERALLY FROM THE CORE, MAINING MEANS AND HAVING WALLS AND PLATEAUS OF A SIZE AND NUMBER SUFFICIENT TO CARRY SAID TUBING OFF THE CORE, MAINTAINING THE TUBING IN ACTUAL CONTACT WITH SAID PLATEAUS AND MAINTAINING A LAYER OF AIR BETWEEN THE TUBING AND THE CORE OF THE COOLING MEANS.
References Cited (Backward Citations)
US3144494A
Cited
US3061875A
Cited
US3061940A
Cited
US3090991A
Cited
US3142865A
Cited
US3201827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |