US3608136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion head with ring nozzle of adjustable width along a portion of circumference
Assignee: Vodafone GmbH
•
Filing: 1968-09-06
•
Granted: 1971-09-28
•
Expires: 1988-09-06
Abstract
Abstract AN EXTRUSION HEAD HAS A CASING WITH A RING NOZZLE THAT FORMS A PART OF AN ANNULAR SPACE BETWEEN THE FORWARD END OF A MANDREL AND A SURFACE IN THE CASING. THE WIDTH OF A PORTION OF THE CIRCUMFERENCE OF THE ANNULAR SPACE IS ADJUSTABLE, THEREBY TO VARY THE THICKNESS OF THE HOLLOW EXTRUDED MATERIAL ENCASING AN ELONGATED WORKPIECE.
Inventors
- 👤 Hans Tripptrap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:31
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/03; B29C48/09; B29C48/15; B29C48/151
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |