Patent US3264389A successfully refreshed from Google Patents.
US3264389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for spinning special yarns
Assignee: Monsanto Co
•
Filing: 1965-05-03
•
Granted: 1966-08-02
•
Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 James G Sims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:21
CPC Classifications
D; D01; D01D; D01D11/00; D01D5/00; D01D5/08; D01D5/088; D01D5/092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A FLUIDIZED BED FILAMENT YARN SPINNING METHOD COMPRISING THE STEPS OF, (A) EXTRUDING A GROUP OF MOLTEN FILAMENTS OF THERMOPLASTIC MATERIAL, (B) PASSING SAID FILAMENTS LONGITUDINALLY IN ONE DIRECTION THROUGH A QUENCHING ZONE, (C) CONVERGING SAID FILAMENTS TO FORM A YARN AFTER THEY PASS OUT OF SAID QUENCHING ZONE, (D) COLLECTING SAID YARN, (E) ESTABLISHING AN AIRSTREAM IN SAID QUENCHING ZONE FLOWING IN AN OPPOSITE DIRECTION TO SAID ONE DIRECTION OF FILAMENT TRAVEL, (F) ENTRAINING FINE PARTICLES OF INERT MATERIAL INTO SAID AIRSTREAM, (G) FORMING A FLUIDIZED BED OF SAID FINE PARTICLES IN SAID QUENCHING ZONE IN SURROUNDMENT OF AND ADJACENT TO THE ENTRANCE OF SAID FILAMENTS INTO SAID QUENCHING ZONE, (H) WHEREBY SAID PARTICLES IN SAID FLUIDIZED BED MOVE ABOUT AT RANDOM THEREIN AND CONTACT SAID FILAMENTS THEREBY EFFECTING TRANSFER OF HEAT FROM SAID FILAMENTS TO SAID PARTICLES FOR COOLING SAID FILAMENTS.
Claim 2
Dependent Claim
143 words
A FLUIDIZED BED FILAMENT YARN SPINNING METHOD COMPRISING THE STEPS OF, (A) EXTRUDING A GROUP OF MOLTEN FILAMENTS OF THERMOPLASTIC MATERIAL, (B) PASSING SAID FILAMENTS LONGITUDINALLY IN ONE DIRECTION THROUGH A QUENCHING ZONE, (C) CONVERGING SAID FILAMENTS TO FORM A YARN AFTER THEY PASS OUT OF SAID QUENCHING ZONE, (D) COLLECTING SAID YARN, (E) ESTABLISHING AN AIRSTREAM IN SAID QUENCHING ZONE FLOWING IN AN OPPOSITE DIRECTION TO SAID ONE DIRECTION OF FILAMENT TRAVEL, (F) ENTRAINING FINE PARTICLES OF INERT MATERIAL INTO SAID AIRSTREAM, (G) FORMING A FLUIDIZED BED OF SAID FINE PARTICLES IN SAID QUENCHING ZONE IN SURROUNDMENT OF AND ADJACENT TO THE ENTRANCE OF SAID FILAMENTS INTO SAID QUENCHING ZONE, (H) WHEREBY SAID PARTICLES IN SAID FLUIDIZED BED MOVE ABOUT AT RANDOM THEREIN AND CONTACT SAID FILAMENTS THEREBY EFFECTING TRANSFER OF HEAT FROM SAID FILAMENTS TO SAID PARTICLES FOR COOLING SAID FILAMENTS.
References Cited (Backward Citations)
US2034008A
Cited
US2434533A
Cited
US2775022A
Cited
US2797469A
Cited
US2937668A
Cited
US3062611A
Cited
US3072968A
Cited
US3088188A
Cited
US3137990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |