US3357655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous filament yarn having low and variable twist method of making same
Assignee: British Nylon Spinners Ltd
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Filing: 1965-05-07
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Granted: 1967-12-12
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Expires: 1985-05-07
Abstract
No abstract record available.
Inventors
- 👤 Iwnicki Kurt
- 👤 Derek J Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:13
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/08; D01; D01H; D01H1/00; D01H1/14; D01H1/20; D01H1/28; D01H1/30; D01H1/305; D02G; D02G1/00; D01H2700/00; D01H2700/24; Y; Y10; Y10S; Y10S57/00; Y10S57/908
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A YARN PACKAGE HAVING TAPERED END-PORTIONS AND BEING BUILT WITH EACH SUCCESSIVE LAYER AT A CONSTANT PACKAGE WINDING RADIUS GREATER THAN THAT OF THE PRECEDING LAYER, THE YARN IN SAID PACKAGE BEING A COMPACT MULTIFILAMENT, CONTINUOUS FILAMENT YARN HAVING A LOW UNI-DIRECTIONAL TWIST DECREASING IN VALUE FROM INSIDE TO OUTSIDE OF THE PACKAGE AND HAVING A COMPENSATORY DEGREE OF INTERFILAMENT COHESION ALONG ITS LENGTH INDEPENDENT OF UNIDIRECTIONAL TWIST AND SUFFICIENT TO IMPART TO THE YARN AS A WHOLE THE HANDLING PROPERTIES OF A SIMILAR MULTIFILAMENT, CONTINUOUS FILAMENT YARN TWISTED TO A TWIST SUBSTANTIALLY AT LEAST 0.15 TURN PER YARN.
Claim 2
Dependent Claim
99 words
A YARN PACKAGE HAVING TAPERED END-PORTIONS AND BEING BUILT WITH EACH SUCCESSIVE LAYER AT A CONSTANT PACKAGE WINDING RADIUS GREATER THAN THAT OF THE PRECEDING LAYER, THE YARN IN SAID PACKAGE BEING A COMPACT MULTIFILAMENT, CONTINUOUS FILAMENT YARN HAVING A LOW UNI-DIRECTIONAL TWIST DECREASING IN VALUE FROM INSIDE TO OUTSIDE OF THE PACKAGE AND HAVING A COMPENSATORY DEGREE OF INTERFILAMENT COHESION ALONG ITS LENGTH INDEPENDENT OF UNIDIRECTIONAL TWIST AND SUFFICIENT TO IMPART TO THE YARN AS A WHOLE THE HANDLING PROPERTIES OF A SIMILAR MULTIFILAMENT, CONTINUOUS FILAMENT YARN TWISTED TO A TWIST SUBSTANTIALLY AT LEAST 0.15 TURN PER YARN.
Claim 3
Dependent Claim
140 words
A PROCESS FOR WINDING A YARN PACKAGE HAVING TAPERED END PORTIONS COMPRISING THE STEPS OF (A) FORWARDING MULTIFILAMENT, CONTINUOUS FILAMENT YARN FROM THE PERIPHERY OF A ROLL ROTATING AT A CONSTANT SPEED, (B) WINDING THE YARN INTO A PACKAGE BY A RING SPINDLE DEVICE WITH A PACKAGE BUILD IN WHICH THE TRANSVERSE STROKE DECREASES IN LENGTH PROGRESSIVELY THROUGHOUT THE BUILD, (C) DECREASING THE SPEED OF ROTATION OF THE SPINDLE OF THE RING SPINDLE DEVICE ACCORDING TO A PROGRAMME DURING THE WINDING OF THE PACKAGE TO MAINTAIN CONSTANT THE SPEED OF ROTATION OF THE RIND TRAVELLER OF SAID DEVICE, AND (D) INTERLACING THE FILAMENTS OF SAID YARN BY AIR JET MEANS TO COMPENSATE FOR THE DECREASE IN TWIST RESULTING FROM THE DECREASE IN THE SPEED OF ROTATION OF THE SPINDLE DURING PASSAGE OF THE YARN FROM SAID ROLL TO SAID DEVICE.
Claim 4
Dependent Claim
140 words
A PROCESS FOR WINDING A YARN PACKAGE HAVING TAPERED END PORTIONS COMPRISING THE STEPS OF (A) FORWARDING MULTIFILAMENT, CONTINUOUS FILAMENT YARN FROM THE PERIPHERY OF A ROLL ROTATING AT A CONSTANT SPEED, (B) WINDING THE YARN INTO A PACKAGE BY A RING SPINDLE DEVICE WITH A PACKAGE BUILD IN WHICH THE TRANSVERSE STROKE DECREASES IN LENGTH PROGRESSIVELY THROUGHOUT THE BUILD, (C) DECREASING THE SPEED OF ROTATION OF THE SPINDLE OF THE RING SPINDLE DEVICE ACCORDING TO A PROGRAMME DURING THE WINDING OF THE PACKAGE TO MAINTAIN CONSTANT THE SPEED OF ROTATION OF THE RIND TRAVELLER OF SAID DEVICE, AND (D) INTERLACING THE FILAMENTS OF SAID YARN BY AIR JET MEANS TO COMPENSATE FOR THE DECREASE IN TWIST RESULTING FROM THE DECREASE IN THE SPEED OF ROTATION OF THE SPINDLE DURING PASSAGE OF THE YARN FROM SAID ROLL TO SAID DEVICE.
References Cited (Backward Citations)
US3083523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |