Patent US3196602A successfully refreshed from Google Patents.
US3196602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crimping synthetic thermoplastic yarns
Assignee: British Nylon Spinners Ltd
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Filing: 1963-09-06
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Granted: 1965-07-27
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Expires: 1983-09-06
Abstract
No abstract record available.
Inventors
- 👤 Jenkins Donald Glyn
- 👤 Clapson Brian Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:47
CPC Classifications
D; D02; D02G; D02G1/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
83 words
A PROCESS FOR CRIMPING A SYNTHETIC THERMOPLASTIC MULTIFILAMENT YARN CONSISTING OF THE STEPS OF: (A) IMPARTING A LOW DEGREE OF TWIST TO SAID YARN; (B) HEATING SAID TWISTED YARN TO A TEMPERATURE OF AT LEAST 100*C. BUT NOT GREATER THAN 30*C. BELOW THE MELTING POINT OF THE MATERIAL OF THE YARN WHILST THE YARN IS UNDER TENSION; (C) SQUEEZING THE TWISTED YARN BETWEEN THE SURFACES OF A PAIR OF DRIVEN NIP-ROLLERS WHILST IT IS AT THE SAID TEMPERATURE; AND (D) BACK-TWISTING THE YARN.
Claim 2
Dependent Claim
83 words
A PROCESS FOR CRIMPING A SYNTHETIC THERMOPLASTIC MULTIFILAMENT YARN CONSISTING OF THE STEPS OF: (A) IMPARTING A LOW DEGREE OF TWIST TO SAID YARN; (B) HEATING SAID TWISTED YARN TO A TEMPERATURE OF AT LEAST 100*C. BUT NOT GREATER THAN 30*C. BELOW THE MELTING POINT OF THE MATERIAL OF THE YARN WHILST THE YARN IS UNDER TENSION; (C) SQUEEZING THE TWISTED YARN BETWEEN THE SURFACES OF A PAIR OF DRIVEN NIP-ROLLERS WHILST IT IS AT THE SAID TEMPERATURE; AND (D) BACK-TWISTING THE YARN.
Claim 3
Dependent Claim
15 words
A CRIMPED MULTIFILAMENT YARN OF SYNTHETIC THERMOPLASTIC MATERIAL MADE BY THE PROCESS OF CLAIM 1.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |