US3301933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic melt extruder
Assignee: OI Glass Inc
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Filing: 1963-05-17
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Granted: 1967-01-31
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Expires: 1983-05-17
Abstract
No abstract record available.
Inventors
- 👤 Charles E Plymale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:47
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
71 words
IN A METHOD OF EXTRUDING A THERMOPLASTIC MATERIAL BY THE VISCO-ELASTIC EFFECT EXERTED BETWEEN THE CONFRONTING FACES OF RELATIVELY ROTATABLE ELEMENTS, THE STEPS OF POSITIONING SAID FACES AT A DISTANCE EFFECTIVE TO PROVIDE A VISCO-ELASTIC SHEARING GAP THEREBETWEEN WHENEVER THE ISSUANCE OF EXTRUDATE IS DESIRED, AND SPACING SAID FACES THROUGH A DISTANCE GREATER THAN THAT NECESSARY TO FORM AN EFFECTIVE VISCO-ELASTIC SHEARING GAP WHENEVER THE ISSUANCE OF EXTRUDATE IS NOT DESIRED.
Claim 2
Dependent Claim
154 words
IN AN ELASTIC MELT EXTRUDER, A PAIR OF RELATIVELY ROTATABLE ELEMENTS INCLUDING A DRIVEN ELEMENT AND A FIXED ELEMENT HAVING SPACED CONFRONTING FACES, ENCLOSURE MEANS DEFINING AN INTERIOR SPACE SNUGLY PERIPHERALLY ENCLOSING SAID FACES AND HAVING AN INLET OPENING THROUGH WHICH PARTICULATE MATERIAL IS SUPPLIED TO THE SPACE BETWEEN SAID FACES AND AN AXIAL OUTLET OPENING IN ONE OF THE FACES FRO EXTRUDATE, MEANS FOR RELATIVELY ROTATING SAID ELEMENTS, MEANS SUPPORTING ONE OF SAID ELEMENTS FOR MOVEMENT AXIALLY OF SAID FACES, AND POWER MEANS FOR MOVING SAID ONE OF SAID ELEMENTS REGARDLESS OF ANY RELATIVE ROTATION THEREOF TO VARY THE SPACING OF SAID FACES BETWEEN (1) A FIRST CLOSELY SPACED POSITION AT WHICH SAID FACES ARE EFFECTIVE TO MELT AND EXTRUDE MATERIAL UNDER PRESSURE THROUGH SAID OUTLET OPENING, AND A SECOND RELATIVELY FURTHER SPACED POSITION AT WHICH SAID FACES ARE INEFFECTIVE TO EXTRUDE SAID MATERIAL AND THE MATERIAL IS MERELY ACCUMULATED BETWEEN SAID FACES.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |