Patent US3218672A successfully refreshed from Google Patents.
US3218672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for production of hollow bodies from thermoplastic synthetic material
Assignee: Individual
•
Filing: 1962-01-15
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Granted: 1965-11-23
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Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 Langecker Erhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:58
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/325; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
APPARATUS FOR MAKING BODIES FROM THERMOPLASTIC SYNTHETIC MATERIAL COMPRISING A TUBULAR EXTRUSION NOZZLE HAVING A THROAT JACKET AND A NOZZLE CORE ADJUSTABLE WITH RESPECT TO THE THROAT J ACKET AND WHICH IS PARTIALLY CONICAL IN SHAPE AS A CONE AND FORMES A CORRESPONDINGLY SHAPED SURFACE AS TO THE THROAT JACKET, MEANS TO PROVIDE AN ADJUSTABLE OUTLET GAP FOR THE PURPOSE OF OBTAINING DIFFERENT WALL THICKNESSES BY ADJUSTING THE NOZZLE CORE AND THE THROAT JACKET RELATIVE TO EACH OTHER DURING THE EXTRUSION OF THE TUBE, THE SURFACES OF THE THROAT JACKET AND OF THE NOZZLE CORE STARTING FROM THE POINT OF THEOUTLET BEING CONICAL FORMING AN INWARDLY EXPANDING GAP, AND CONTROL MECHANISM FOR ADJUSTMENT OF THE OUTLET GAP COMPRISING A SHAFT WITH A CAM THEREON, A FIRST HYDRAULIC CYLINDER HAVING A PISTON ROD MAINTAINED IN CONTACT WITH SAID CAM BY PRESSURE IN SAID FIRST HYDRAULIC CYLINDER, A SECOND HYDRAULIC
Claim 2
Dependent Claim
148 words
APPARATUS FOR MAKING BODIES FROM THERMOPLASTIC SYNTHETIC MATERIAL COMPRISING A TUBULAR EXTRUSION NOZZLE HAVING A THROAT JACKET AND A NOZZLE CORE ADJUSTABLE WITH RESPECT TO THE THROAT J ACKET AND WHICH IS PARTIALLY CONICAL IN SHAPE AS A CONE AND FORMES A CORRESPONDINGLY SHAPED SURFACE AS TO THE THROAT JACKET, MEANS TO PROVIDE AN ADJUSTABLE OUTLET GAP FOR THE PURPOSE OF OBTAINING DIFFERENT WALL THICKNESSES BY ADJUSTING THE NOZZLE CORE AND THE THROAT JACKET RELATIVE TO EACH OTHER DURING THE EXTRUSION OF THE TUBE, THE SURFACES OF THE THROAT JACKET AND OF THE NOZZLE CORE STARTING FROM THE POINT OF THEOUTLET BEING CONICAL FORMING AN INWARDLY EXPANDING GAP, AND CONTROL MECHANISM FOR ADJUSTMENT OF THE OUTLET GAP COMPRISING A SHAFT WITH A CAM THEREON, A FIRST HYDRAULIC CYLINDER HAVING A PISTON ROD MAINTAINED IN CONTACT WITH SAID CAM BY PRESSURE IN SAID FIRST HYDRAULIC CYLINDER, A SECOND HYDRAULIC
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |