US3303253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for extruding thermoplastic material
Assignee: OI Glass Inc
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Filing: 1964-03-23
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Granted: 1967-02-07
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Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 James E Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:08
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/46; B29C48/03; B29C48/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN AN ELASTIC MELT EXTRUDER OF THE TYPE WHEREIN A PAIR OF RELATIVELY ROTATABLE PLATES DEFINE THEREBETWEEN THE OPPOSING RADIAL FACES OF A MELT CHAMBER IN WHICH PARTICULATE THERMOPLASTIC MATERIAL IS ADVANCED CENTRIPETALLY TO A CENTRAL OUTLET ORIFICE TO BE ISSUED THERETHROUGH IN A PLASTICIZED STATE, AND INCLUDING A FEED MECHANISM OF THE POSITIVE DISPLACEMENT TYPE FOR INTRODUCING PARTICULATE MATERIAL INTO SAID MELT CHAMBER THROUGH A FEED OPENING IN ONE OF SAID PLATES OPENING DIRECTLY ONTO SAID CHAMBER, THE IMPROVEMENTS OF A CHMBER PLATE FIXED TO SAID ONE OF SAID PAIR OF PLATES AND AXIALLY INTERPOSED BETWEEN SAID PAIR OF FACES, SAID CHAMBER PLATE HAVING A CENTRAL APERTURE
Claim 2
Dependent Claim
108 words
IN AN ELASTIC MELT EXTRUDER OF THE TYPE WHEREIN A PAIR OF RELATIVELY ROTATABLE PLATES DEFINE THEREBETWEEN THE OPPOSING RADIAL FACES OF A MELT CHAMBER IN WHICH PARTICULATE THERMOPLASTIC MATERIAL IS ADVANCED CENTRIPETALLY TO A CENTRAL OUTLET ORIFICE TO BE ISSUED THERETHROUGH IN A PLASTICIZED STATE, AND INCLUDING A FEED MECHANISM OF THE POSITIVE DISPLACEMENT TYPE FOR INTRODUCING PARTICULATE MATERIAL INTO SAID MELT CHAMBER THROUGH A FEED OPENING IN ONE OF SAID PLATES OPENING DIRECTLY ONTO SAID CHAMBER, THE IMPROVEMENTS OF A CHMBER PLATE FIXED TO SAID ONE OF SAID PAIR OF PLATES AND AXIALLY INTERPOSED BETWEEN SAID PAIR OF FACES, SAID CHAMBER PLATE HAVING A CENTRAL APERTURE
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |