US3346920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
External cooling device for extruded tubing
Assignee: Continental Can Co Inc
•
Filing: 1963-11-26
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Granted: 1967-10-17
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Expires: 1983-11-26
Abstract
No abstract record available.
Inventors
- 👤 Charles M Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:31
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/90; B29C48/908; B29C48/03; B29C48/07; B29C48/08; B29C48/09; B29C48/10; B29C48/885; B29C48/911; B29C48/9115; B29C48/912; Y; Y10; Y10T; Y10T24/00; Y10T24/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
APPARATUS FOR COOLING AND SIZING RELATIVELY THINWALLED TUBING COMPRISING MEANS FOR EXTRUDING RELATIVELY THIN-WALLED TUBING, MEANS FOR CONVEYING SAID TUBING ALONG A PREDETERMINED PATH, MEANS ADJACENT SAID PREDETERMINED PATH FOR COOLING AND SIZING THE EXTRUDER TUBING, SAID LASTMENTIONED MEANS COMPRISING AN IMPERFORATE SPIRAL COOLING COIL HAVING PORTIONS ESTABLISHING AN UNBROKEN SURFACE FOR CONTINUOUSLY CONTACTING EXTERIOR WALL PORTIONS OF THE TUBING TRANSPORTED THROUGH SAID SPIRAL COOLING COIL.
Claim 2
Dependent Claim
66 words
APPARATUS FOR COOLING AND SIZING RELATIVELY THINWALLED TUBING COMPRISING MEANS FOR EXTRUDING RELATIVELY THIN-WALLED TUBING, MEANS FOR CONVEYING SAID TUBING ALONG A PREDETERMINED PATH, MEANS ADJACENT SAID PREDETERMINED PATH FOR COOLING AND SIZING THE EXTRUDER TUBING, SAID LASTMENTIONED MEANS COMPRISING AN IMPERFORATE SPIRAL COOLING COIL HAVING PORTIONS ESTABLISHING AN UNBROKEN SURFACE FOR CONTINUOUSLY CONTACTING EXTERIOR WALL PORTIONS OF THE TUBING TRANSPORTED THROUGH SAID SPIRAL COOLING COIL.
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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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |