US3142866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid cooled casting drums
Assignee: Eastman Kodak Co
•
Filing: 1961-01-16
•
Granted: 1964-08-04
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Expires: 1981-01-16
Abstract
No abstract record available.
Inventors
- 👤 Pabo Waldemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:04
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/911; B29C48/9135; B29C48/915; B29C48/916; B29C48/03; B29C48/07; B29C48/08; B29C48/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A FILM CASTING DRUM FOR USE IN FORMING A SELF-SUPPORTING FILM BY DEPOSITION ON THE DRUM PERIPHERY OF A STREAM OF MOLTEN THERMOPLASTIC MATERIAL FOR COOLING TO ITS SETTING POINT AND COMPRISING: A CLOSED HOLLOW BODY MEMBER HAVING A TUBULAR PORTION OF HEAT CONDUCTIVE MATERIAL THE EXTERNAL SURFACE OF WHICH CONSTITUTES THE CASTING SURFACE ONTO WHICH THE STREAM OF MOLTEN THERMOPLASTIC MATERIAL IS TO BE DEPOSITED AND HAVING END WALLS OF HEAT CONDUCTIVE MATERIAL CLOSING THE ENDS OF SAID TUBULAR PORTION AND DIRECTLY CONNECTED THERETO SO AS TO BE IN HEAT CONDUCTIVE RELATION THEREWITH; MEANS FOR SUPPORTING SAID BODY MEMBER FOR ROTATION ABOUT THE AXIS OF SAID TUBULAR PORTION; AND MEANS FOR FILLING SAID HOLLOW BODY MEMBER WITH A COOLING LIQUID AND THEREAFTER FEEDING SAID COOLING LIQUID INTO AND OUT OF SAID BODY MEMBER WHILE
Claim 2
Dependent Claim
135 words
A FILM CASTING DRUM FOR USE IN FORMING A SELF-SUPPORTING FILM BY DEPOSITION ON THE DRUM PERIPHERY OF A STREAM OF MOLTEN THERMOPLASTIC MATERIAL FOR COOLING TO ITS SETTING POINT AND COMPRISING: A CLOSED HOLLOW BODY MEMBER HAVING A TUBULAR PORTION OF HEAT CONDUCTIVE MATERIAL THE EXTERNAL SURFACE OF WHICH CONSTITUTES THE CASTING SURFACE ONTO WHICH THE STREAM OF MOLTEN THERMOPLASTIC MATERIAL IS TO BE DEPOSITED AND HAVING END WALLS OF HEAT CONDUCTIVE MATERIAL CLOSING THE ENDS OF SAID TUBULAR PORTION AND DIRECTLY CONNECTED THERETO SO AS TO BE IN HEAT CONDUCTIVE RELATION THEREWITH; MEANS FOR SUPPORTING SAID BODY MEMBER FOR ROTATION ABOUT THE AXIS OF SAID TUBULAR PORTION; AND MEANS FOR FILLING SAID HOLLOW BODY MEMBER WITH A COOLING LIQUID AND THEREAFTER FEEDING SAID COOLING LIQUID INTO AND OUT OF SAID BODY MEMBER WHILE
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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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |