US3702226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic molding
Assignee: Goodrich Corp
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Filing: 1971-01-20
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Granted: 1972-11-07
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Expires: 1991-01-20
Abstract
Abstract THE MOLDING OF PLASTICIZED MATERIAL WHEREIN THE DIE ASSEMBLY HAS ITS MANDREL COOLED TO RESTORE A SYMMETRICAL HEAT AND VELOCITY PROFILE TO THE ANNULAR MELT AND IN ADDITION PROVIDES MEANS FOR THE COOLING OF AN ADAPTER WHICH DIVIDES THE ORIGINAL PLASTICIZED MELT FROM THE EXTRUDER INTO TWO CYLINDRICAL CROSS SECTIONED STREAMS OF MATERIAL FOR MOVEMENT INTO TWO SEPARATE DIES. THE ADAPTER IS COOLED TO RESTOR THE TEMPERATURE AND VELOCITY PROFILE.
Inventors
- 👤 Heung T Kim
- 👤 John P Darby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:47
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/02; B29C49/04; B29C48/00; B29C48/03; B29C48/09; B29C48/25; B29C48/30; B29C48/32; B29C48/335; B29C48/36; B29C48/50; B29C48/695; B29C48/70; B29C48/705; B29C48/78; B29C48/86; B29C48/87; B29C48/10
Claims Analysis
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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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |