US2750626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for plasticizing and straining organic plastic compounds
Assignee: AT&T Inc
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Filing: 1954-10-06
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Granted: 1956-06-19
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Expires: 1974-10-06
Abstract
No abstract record available.
Inventors
- 👤 George E Henning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:17
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/03; B29C48/05; B29C48/06; B29C48/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
APPARATUS FOR PLASTICIZING AND STRAINING ORGANIC PLASTIC MATERIAL, WHICH COMPRISES A CONDUIT, A STOCK SCREW MOUNTED ROTATABLY IN THE CONDUIT FOR FORCING PLASTIC MATERIAL THROUGH THE CONDUIT, AN EXTRUSION BEAD HAVING PROVIDED THEREIN AN OPENING FORMING AN EXTENSION OF THE CONDUIT, AN ELONGATED CORE TUBE MOUNTED ON THE DELIVERY END OF THE SCREW FOR ROTATION THEREWITH AND PROJECTING AXIALLY THERFROM INTO THE OPENING IN THE EXTRUSION HEAD, A TUBULAR, ARTICULATED STRAINER POSITIONED BETWEEN THE DELIVERY END OF THE SCREW AND THE EXTRUSION HEAD IN AXIAL ALIGNMENT WITH THE CONDUIT, ONE END OF SAID ARTICULATED STRAINER BEING SUPPORTED BY THE CORE TUBE AND THE OTHER END BEING MOUNTED FIXEDLY TO THE EXTRUSION HEAD SURROUNDING THE OPENING THEREIN, AND MEANS FOR ROTATING THE STOCK SCREW TO FORCE THE PLASTIC MATERIAL ALONG THE BORE AND THEN THROUGH THE STRAINER INTO THE OPENING IN THE EXTRUSION HEAD.
Claim 2
Dependent Claim
143 words
APPARATUS FOR PLASTICIZING AND STRAINING ORGANIC PLASTIC MATERIAL, WHICH COMPRISES A CONDUIT, A STOCK SCREW MOUNTED ROTATABLY IN THE CONDUIT FOR FORCING PLASTIC MATERIAL THROUGH THE CONDUIT, AN EXTRUSION BEAD HAVING PROVIDED THEREIN AN OPENING FORMING AN EXTENSION OF THE CONDUIT, AN ELONGATED CORE TUBE MOUNTED ON THE DELIVERY END OF THE SCREW FOR ROTATION THEREWITH AND PROJECTING AXIALLY THERFROM INTO THE OPENING IN THE EXTRUSION HEAD, A TUBULAR, ARTICULATED STRAINER POSITIONED BETWEEN THE DELIVERY END OF THE SCREW AND THE EXTRUSION HEAD IN AXIAL ALIGNMENT WITH THE CONDUIT, ONE END OF SAID ARTICULATED STRAINER BEING SUPPORTED BY THE CORE TUBE AND THE OTHER END BEING MOUNTED FIXEDLY TO THE EXTRUSION HEAD SURROUNDING THE OPENING THEREIN, AND MEANS FOR ROTATING THE STOCK SCREW TO FORCE THE PLASTIC MATERIAL ALONG THE BORE AND THEN THROUGH THE STRAINER INTO THE OPENING IN THE EXTRUSION HEAD.
References Cited (Backward Citations)
US2412979A
Cited
US2488595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-19 | 1959-12-19 | 1960-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-19 | 1963-12-19 | 1964-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-19 | 1967-12-19 | 1968-06-19 | $7700.00 | Window Closed / Lapsed |