Patent US3710565A successfully refreshed from Google Patents.
US3710565A
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Elastic textured yarn and a process for its production
Assignee: Bayer AG
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Filing: 1970-09-10
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Granted: 1973-01-16
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Expires: 1990-09-10
Abstract
Abstract An elastic, low-bulk, textured yarn with a curl count of from 300 to 700 turns per meter, having alternating portions with Stwist and Z-twist, of irregular length.
Inventors
- 👤 H Neumann
- 👤 R Dauscher
- 👤 R Schnegg
- 👤 K Heinroth
- 👤 H Ohse
- 👤 K Nickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:16
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/024
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
44 words
An elastic, low-bulk, textured yarn having a curl count of from 300 to 700 turns per meter, and having alternating portions of S-twist and Z-twist, of irregular length, said portions of Stwist and Z-twist each having 10 to 300 genuine twist turns per meter.
Claim 2
Dependent Claim
44 words
An elastic, low-bulk, textured yarn having a curl count of from 300 to 700 turns per meter, and having alternating portions of S-twist and Z-twist, of irregular length, said portions of Stwist and Z-twist each having 10 to 300 genuine twist turns per meter.
Claim 3
Dependent Claim
18 words
A yarn as claimed in claim 1 wherein the yarn is made from filaments of nylon-6 or nylon-6,6.
Claim 4
Dependent Claim
17 words
The yarn of claim 1, said yarn having a residual shrinkage of from 5 to 8 percent.
Claim 5
Dependent Claim
9 words
Hosiery consisting essentially of the yarn of claim 1.
Claim 6
Dependent Claim
109 words
A process for producing an elastic, low-bulk, textured yarn composed of a plurality of individual high polymer filaments which comprises subjecting said plurality of filaments to the action of a frictional false twisting device at a rate of 200 to 900 meters per minute while said filaments are being stretched, said filaments being frictionally false twisted by applying at least 7,000 to 10,000 turns per meter under a tension of about 0.82 to 2 g/dtex and at a temperature of 150* to 220*C., the friction characteristics of said false twisting device being such that twisting slip occurs at irregular intervals at the contact between said yarn and said device.
Claim 7
Dependent Claim
109 words
A process for producing an elastic, low-bulk, textured yarn composed of a plurality of individual high polymer filaments which comprises subjecting said plurality of filaments to the action of a frictional false twisting device at a rate of 200 to 900 meters per minute while said filaments are being stretched, said filaments being frictionally false twisted by applying at least 7,000 to 10,000 turns per meter under a tension of about 0.82 to 2 g/dtex and at a temperature of 150* to 220*C., the friction characteristics of said false twisting device being such that twisting slip occurs at irregular intervals at the contact between said yarn and said device.
Claim 8
Dependent Claim
15 words
A process as claimed in claim 5 wherein the high polymer is nylon-6 or Nylon-6,6.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |