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Patent US3611491A successfully refreshed from Google Patents.
US3611491A
Expired / Lapsed
US
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Apparatus for varying the width of extruded thermoplastic material
Assignee: EIDP Inc
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Filing: 1969-07-01
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Granted: 1971-10-12
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Expires: 1989-07-01
Abstract
Abstract MEANS FOR ADJUSTING THE WIDTH OF SHEETING OF THERMOPLASTIC MATERIAL EXTRUDED FROM AN ELONGATED EXTRUSION ORIFICE OF AN EXTRUSION DIE IS PROVIDED, COMPRISING A SLIDE POSITIONED OVER A PORTION OF THE ORIFICE EXTENDING FROM AT LEAST ONE OF ITS ENDS AND A PAIR OF CAMS OPPOSITELY ROTATING TO URGE THE SLIDE AGAINST THE DIE TO BLOCK THAT PORTION OF THE ORIFICE FROM EXTRUDING SHEET.
Inventors
- 👤 James Louis Rector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:35
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/305; B29C48/31; B29C48/03; B29C48/07; B29C48/08; B29C48/12
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |