Patent US5031891A successfully refreshed from Google Patents.
Patent US3183288A successfully refreshed from Google Patents.
US3183288A
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Method for extruding
Assignee: Goodyear Tire and Rubber Co
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Filing: 1961-12-21
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Granted: 1965-05-11
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Expires: 1981-12-21
Abstract
No abstract record available.
Inventors
- 👤 Challen E Taylor
- 👤 Hall Robert George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:38
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/06; B29C48/09; B29C48/10; B29C48/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN THE CONTINUOUS EXTRUSION OF A TUBULAR STRUCTURE OF PLASTIC MATERIAL, THE IMPROVED METHOD OF LUBRICATING THE INTERIOR SURFACE OF THE TUBULAR STRUCTURE COMPRISING CONTINUOUSLY INJECTING INTO THE INTERIOR OF THE STRUCTURE AS IT LEAVES THE EXTRUSION DIE A LATHER OF MINUTE BUBBLES FORMED FROM AN AERATED LUBRICATING LIQUID MATERIAL TO THOROUGHLY COVER THE INTERIOR SURFACE OF THE TUBULAR STRUCTURE WITH A FILM OF THE LUBRICATING MATERIAL FORMED THEREON AS THE LATHER DETERIORATES.
Claim 2
Dependent Claim
73 words
IN THE CONTINUOUS EXTRUSION OF A TUBULAR STRUCTURE OF PLASTIC MATERIAL, THE IMPROVED METHOD OF LUBRICATING THE INTERIOR SURFACE OF THE TUBULAR STRUCTURE COMPRISING CONTINUOUSLY INJECTING INTO THE INTERIOR OF THE STRUCTURE AS IT LEAVES THE EXTRUSION DIE A LATHER OF MINUTE BUBBLES FORMED FROM AN AERATED LUBRICATING LIQUID MATERIAL TO THOROUGHLY COVER THE INTERIOR SURFACE OF THE TUBULAR STRUCTURE WITH A FILM OF THE LUBRICATING MATERIAL FORMED THEREON AS THE LATHER DETERIORATES.
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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |