US3248755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic melt extruder
Assignee: OWENS ILLINOIS Co
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Filing: 1963-12-04
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Granted: 1966-05-03
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Expires: 1983-12-04
Abstract
No abstract record available.
Inventors
- 👤 Charles E Plymale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:25
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/47; B29C48/03; B29C48/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN AN ELASTIC MELT EXTRUDER, A FIXED SHEARING FACE AND A ROTATABLE SHEARING FACE DEFINING THEREBETWEEN A SHEARING GAP COMMUNICATING WITH A PERIPHERAL INLET OPENING AND AN AXIAL OUTLET ORIFICE, ONE OF SAID FACES BEING PLANAR AND THE OTHER OF SAID FACES HAVING A PLANAR OUTER PORTION COOPERATING WITH SAID ONE FACE TO RECEIVE PLASTIC MATERIAL FROM SAID INLET OPENING THEREBETWEEN AND HAVING A HELICAL WALL CONCENTRIC ABOUT SAID OUTLET ORIFICE AND PROJECTING AXIALLY FROM SAID PLANAR OUTER PORTION TOWARD SAID OTHER FACE, SAID WALL CIRCUMSCRIBING A PERIPHERALLY ENCLOSED HELICAL PATH INTO WHICH MATERIAL FROM THE PLANAR OUTER PORTION IS CHANNELLED TO BE PROGRESSIVELY ADVANCED TOWARD SAID ORIFICE, THE CROSS SECTIONAL AREA OF SAID PATH PROGRESSIVELY DECREASING AS THE MATERIAL ADVANCES THROUGH SAID PATH AND TOWARD SAID ORIFICE.
Claim 2
Dependent Claim
128 words
IN AN ELASTIC MELT EXTRUDER, A FIXED SHEARING FACE AND A ROTATABLE SHEARING FACE DEFINING THEREBETWEEN A SHEARING GAP COMMUNICATING WITH A PERIPHERAL INLET OPENING AND AN AXIAL OUTLET ORIFICE, ONE OF SAID FACES BEING PLANAR AND THE OTHER OF SAID FACES HAVING A PLANAR OUTER PORTION COOPERATING WITH SAID ONE FACE TO RECEIVE PLASTIC MATERIAL FROM SAID INLET OPENING THEREBETWEEN AND HAVING A HELICAL WALL CONCENTRIC ABOUT SAID OUTLET ORIFICE AND PROJECTING AXIALLY FROM SAID PLANAR OUTER PORTION TOWARD SAID OTHER FACE, SAID WALL CIRCUMSCRIBING A PERIPHERALLY ENCLOSED HELICAL PATH INTO WHICH MATERIAL FROM THE PLANAR OUTER PORTION IS CHANNELLED TO BE PROGRESSIVELY ADVANCED TOWARD SAID ORIFICE, THE CROSS SECTIONAL AREA OF SAID PATH PROGRESSIVELY DECREASING AS THE MATERIAL ADVANCES THROUGH SAID PATH AND TOWARD SAID ORIFICE.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |