US3177556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drawing and crimping of synthetic filaments and yarns
Assignee: British Nylon Spinners Ltd
•
Filing: 1963-05-31
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Granted: 1965-04-13
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Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Victor B Van Blerk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:40
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12; D02G1/127; D02J; D02J1/00; D02J1/22; D02J1/229
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS FOR DRAWING AND BULKING YARNS OF SYNTHETIC CONTINUOUS FILAMENTS, CONSISTING OF THE STEPS OF (A) FORWARDING AN UNDRAWN YARN OF SYNTHETIC CONTINUOUS FILAMENTS AT A PREDETERMINED LINEAR RATE TO THE NIP ROLLS OF A STUFFER-BOX CRIMPER; (B) ROTATING SAID NIP ROLLS AT A PREDETERMINED PERIPHERAL RATE AT LEAST TWICE AS GREAT AS SAID LINER RATE; (C) DRAWING SAID YARN BY THE NIP OF SAID ROLLS; (D) IMMEDIATELY THEREAFTER CRIMPING SAID DRAWN YARN WITHIN SAID CRIMPER;
Claim 2
Dependent Claim
77 words
A PROCESS FOR DRAWING AND BULKING YARNS OF SYNTHETIC CONTINUOUS FILAMENTS, CONSISTING OF THE STEPS OF (A) FORWARDING AN UNDRAWN YARN OF SYNTHETIC CONTINUOUS FILAMENTS AT A PREDETERMINED LINEAR RATE TO THE NIP ROLLS OF A STUFFER-BOX CRIMPER; (B) ROTATING SAID NIP ROLLS AT A PREDETERMINED PERIPHERAL RATE AT LEAST TWICE AS GREAT AS SAID LINER RATE; (C) DRAWING SAID YARN BY THE NIP OF SAID ROLLS; (D) IMMEDIATELY THEREAFTER CRIMPING SAID DRAWN YARN WITHIN SAID CRIMPER;
References Cited (Backward Citations)
GB852579A
Cited
US2914810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |