US3266092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced flow die
Assignee: Millennium Petrochemicals Inc
•
Filing: 1962-08-27
•
Granted: 1966-08-16
•
Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Herbert O Corbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:25
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A BALANCED FLOW DIE FOR EXTRUDING PLASTIC FILM COMPRISING AN EXTRUDING ORIFICE, A CHAMBER LEADING TO SAID EXTRUDING ORIFICE, AND A MEMBER FOR INTRODUCING MOLTEN PLASTIC INTO SAID CHAMBER; SAID MEMBER HAVING A FIRST AND SECOND PLURALITY OF FLOW PASSAGES EXTENDING THERETHROUGH WHICH PASSAGES HAVE ELONGATED, ANNULAR, CONCENTRIC SHAPES, THE FLOW PASSAGES IN SAID FIRST PLURALITY HAVING ADJACENT ENDS AND THE FLOW PASSAGES IN SAID SECOND PLURALITY HAVING ADJACENT ENDS, SAID ENDS BEING TAPERED AND NESTED WITH RESPECT TO ONE ANOTHER, AND THE FLOW PASSAGES OF SAID FIRST PLURALITY RADIALLY OVERLAPPING THE ADJACENT ENDS OF THE FLOW PASSAGES OF SAID SECOND PLURALITY.
Claim 2
Dependent Claim
102 words
A BALANCED FLOW DIE FOR EXTRUDING PLASTIC FILM COMPRISING AN EXTRUDING ORIFICE, A CHAMBER LEADING TO SAID EXTRUDING ORIFICE, AND A MEMBER FOR INTRODUCING MOLTEN PLASTIC INTO SAID CHAMBER; SAID MEMBER HAVING A FIRST AND SECOND PLURALITY OF FLOW PASSAGES EXTENDING THERETHROUGH WHICH PASSAGES HAVE ELONGATED, ANNULAR, CONCENTRIC SHAPES, THE FLOW PASSAGES IN SAID FIRST PLURALITY HAVING ADJACENT ENDS AND THE FLOW PASSAGES IN SAID SECOND PLURALITY HAVING ADJACENT ENDS, SAID ENDS BEING TAPERED AND NESTED WITH RESPECT TO ONE ANOTHER, AND THE FLOW PASSAGES OF SAID FIRST PLURALITY RADIALLY OVERLAPPING THE ADJACENT ENDS OF THE FLOW PASSAGES OF SAID SECOND PLURALITY.
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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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |