Patent US2908938A successfully refreshed from Google Patents.
US2908938A
Expired / Lapsed
US
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Extrusion apparatus
Assignee: Goodyear Tire and Rubber Co
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Filing: 1955-08-23
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Granted: 1959-10-20
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Expires: 1975-08-23
Abstract
No abstract record available.
Inventors
- 👤 Charles W Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:57
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/50; B29C48/695; B29C48/70; B29C48/03; B29C48/09; B29C48/10; B29C48/30; B29C48/32; B29C48/69; B29C48/691; B29C48/6914; B29C48/6916; B29C48/001; B29C48/0018; B29C48/07; B29C48/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
144 words
IN AN EXTRUDER FOR FORMING PLASTIC MATERIAL COMPRISING AN EXTRUDING HEAD, INLET MEANS TO SAID HEAD, MEANS TO FEED THE PLASTIC MATERIAL THROUGH SAID INLET MEANS TO SAID HEAD, AND OUTLET MEANS IN SAID HEAD ADAPTED TO RETAIN A FORMING DIE FOR SAID MATERIAL, AN IMPROVED EXTRUDING CHAMBER FOR EXTRUDING PLASTIC MATERIAL IN A SUBSTANTIALLY UNORIENTED FORM CONSISTING OF A HOLLOW CYLINDER BETWEEN SAID INLET MEANS AND SAID OUTLET MEANS WITH SAID INLET AND OUTLET MEANS LOCATED SUBSTANTIALLY AT OPPOSITE ENDS THEREOF, A PIN CONCENTRICALLY SUPPORTED IN SAID CYLINDER FROM THE END THEREOF OPPOSITE SAID OUTLET MEANS TO FORM WITH SAID CYLINDER AN ANNULAR CHAMBER HAVING AN INLET AND OUTLET FOR SAID PLASTIC MATERIAL, AN ANNULAR FORAMINOUS ELEMENT IN SAID CHAMBER AND DIVIDING THE SAME INTO AN INLET CHAMBER AND AN OUTLET CHAMBER WITH AT LEAST A PORTION OF SAID INLET AND OUTLET CHAMBERS
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |