Patent US3337914A successfully refreshed from Google Patents.
US3337914A
Expired / Lapsed
US
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Stacked extrusion die
Assignee: Millennium Petrochemicals Inc
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Filing: 1966-01-03
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Granted: 1967-08-29
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Corbett Herbert Oliver
- 👤 Quackenbush John Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:40
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/03; B29C48/09; B29C48/10; B29C48/14; B29C48/147; B29C48/1472; B29C48/15; B29C48/151; B29C48/16; B29C48/18; B29C48/21; B29C48/304; B29C48/335; B29C48/336; B29C48/3363; B29C2791/00; B29C2791/004; B29C2791/007; B29K; B29K2105/00; B29K2105/06; B29K2105/20; B29L; B29L2031/00; B29L2031/34; B29L2031/3462
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN EXTRUSION DIE FOR THE EXTRUSION OF A PLURALITY OF TUBULAR LAMINATED PLASTIC LAYERS; SAID EXTRUSION DIE COMPRISING A PLURALITY OF IDENTICAL IE DECKS STACKED ATOP ONE ANOTHER AND HAVING ALIGNED CENTRAL OEPNINGS DEFINING THE EXTERIOR SURFACE OF A CYLINDRICAL CHAMBER LEADING TO A DISCHARGE ORIFICE; EACH OF SAID DIE DECKS HAVING COOPERATING TOP AND BOTTOM SURFACE CONFIGURATIONS WHEREBY SAID DECKS ARE CONNECTABLE WITH ONE ANOTHER; ANNULAR CHANNEL MEANS FORMED WITHIN EACH OF SAID PLURALITY OF DIE DECKS GENERALLY IN PLANES PARALLEL TO SAIDDECKS AND CENTRALLY AXIALLY LOCATED WITHIN SAIDDECKS; SAID ANNULAR CHANNEL MEANS RADIALLY EXTENDING TO THE INNER SURFACE OF THEIR SAID CENTRAL OPENINGS; AND RESPECTIVE RADIAL CHANNEL
Claim 2
Dependent Claim
109 words
AN EXTRUSION DIE FOR THE EXTRUSION OF A PLURALITY OF TUBULAR LAMINATED PLASTIC LAYERS; SAID EXTRUSION DIE COMPRISING A PLURALITY OF IDENTICAL IE DECKS STACKED ATOP ONE ANOTHER AND HAVING ALIGNED CENTRAL OEPNINGS DEFINING THE EXTERIOR SURFACE OF A CYLINDRICAL CHAMBER LEADING TO A DISCHARGE ORIFICE; EACH OF SAID DIE DECKS HAVING COOPERATING TOP AND BOTTOM SURFACE CONFIGURATIONS WHEREBY SAID DECKS ARE CONNECTABLE WITH ONE ANOTHER; ANNULAR CHANNEL MEANS FORMED WITHIN EACH OF SAID PLURALITY OF DIE DECKS GENERALLY IN PLANES PARALLEL TO SAIDDECKS AND CENTRALLY AXIALLY LOCATED WITHIN SAIDDECKS; SAID ANNULAR CHANNEL MEANS RADIALLY EXTENDING TO THE INNER SURFACE OF THEIR SAID CENTRAL OPENINGS; AND RESPECTIVE RADIAL CHANNEL
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |