US3229330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for melt-spinning synthetic polymer filaments
Assignee: British Nylon Spinners Ltd
•
Filing: 1964-01-24
•
Granted: 1966-01-18
•
Expires: 1984-01-24
Abstract
No abstract record available.
Inventors
- 👤 Ferrier Duncan Cameron
- 👤 Parr William Geoffrey
- 👤 Mackinnon Hugh Marquis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:44
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
APPARATUS FOR MELT-SPINNING A SYNTHETIC LINEAR POLYMER COMPRISING: A SOURCE OF MOLTEN KPOLYMER; A SPINNERET PACK INCLUDING A FILTER AND A SPINNERET PLATE HAVING ORIFICES THEREIN; A CASING SUPPORTING SAID SPINNERET PACK AND DEFINING AN ANNULAR SPACE AROUND THE SAME; A METERING PUMP FOR FORWARDING MOLTEN POLYMER FROM SAID SOURCE TO AND THROUGH SAID FILTER AND THEN THROUGH ORIFICES IN SAID SPINNERET PLATE TO FORM FILAMENTS; A SOURCE OF INERT GAS UNDER PRESSURE: AND MEANS FOR DELIVERING INERT GAS FROM SAID SOURCE TO BE SUBSTANTIAL PORTION OF THE PERIPHERY OF SAID SPINNERET PLATE AND FOR DISPERING THE GAS IN A LATERALLY UNCONFINED, SHALLOW, HOMOGENEOUS LAYER IN CONTACT WITH THE ENTIRE SURFACE AREA OF SAID SPINNERET PLATE CONTAINING SAID ORIFICES WHEREBY AMBIENT AIR IS PREVENTED FROM EACHING SAID KSPINNERET KPLATE, SAID GAS DELIVERY MEANS INCLUDING MEANS FOR DELIVERING THE GAS TO SAID ANNULAR
Claim 2
Dependent Claim
142 words
APPARATUS FOR MELT-SPINNING A SYNTHETIC LINEAR POLYMER COMPRISING: A SOURCE OF MOLTEN KPOLYMER; A SPINNERET PACK INCLUDING A FILTER AND A SPINNERET PLATE HAVING ORIFICES THEREIN; A CASING SUPPORTING SAID SPINNERET PACK AND DEFINING AN ANNULAR SPACE AROUND THE SAME; A METERING PUMP FOR FORWARDING MOLTEN POLYMER FROM SAID SOURCE TO AND THROUGH SAID FILTER AND THEN THROUGH ORIFICES IN SAID SPINNERET PLATE TO FORM FILAMENTS; A SOURCE OF INERT GAS UNDER PRESSURE: AND MEANS FOR DELIVERING INERT GAS FROM SAID SOURCE TO BE SUBSTANTIAL PORTION OF THE PERIPHERY OF SAID SPINNERET PLATE AND FOR DISPERING THE GAS IN A LATERALLY UNCONFINED, SHALLOW, HOMOGENEOUS LAYER IN CONTACT WITH THE ENTIRE SURFACE AREA OF SAID SPINNERET PLATE CONTAINING SAID ORIFICES WHEREBY AMBIENT AIR IS PREVENTED FROM EACHING SAID KSPINNERET KPLATE, SAID GAS DELIVERY MEANS INCLUDING MEANS FOR DELIVERING THE GAS TO SAID ANNULAR
References Cited (Backward Citations)
GB190703606A
Cited
US2252689A
Cited
US2289860A
Cited
US2869176A
Cited
GB779787A
Cited
US3028627A
Cited
US3115385A
Cited
US3111368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |