Patent US4619457A successfully refreshed from Google Patents.
Patent US4070817A successfully refreshed from Google Patents.
US4070817A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for texturing synthetic yarns
Assignee: Bayer AG
•
Filing: 1976-01-02
•
Granted: 1978-01-31
•
Expires: 1996-01-02
Abstract
Abstract The invention relates to a process for the simultaneous drawing and texturing of synthetic yarns by the false-twist method comprising interlacing the unstretched or partially stretched yarn by means of an interlacing device before entering the texturing zone of the texturing machine.
Inventors
- 👤 Michael Bueb
- 👤 Harry Kubitzek
- 👤 Arthur Langhans
- 👤 Wolfgang Rellensmann
- 👤 Wolfram Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:52
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; Y; Y10; Y10S; Y10S57/00; Y10S57/908
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
49 words
A process for treating synthetic yarns which have been stretched in stretching ratios of from 1:2.5 to 1:4 which comprises interlacing such yarn followed by simultaneously drawing and texturing the yarn by simultaneously drawing and texturing the yarn by false-twisting at a temperature of from 140° to 200° C.
Claim 2
Dependent Claim
49 words
A process for treating synthetic yarns which have been stretched in stretching ratios of from 1:2.5 to 1:4 which comprises interlacing such yarn followed by simultaneously drawing and texturing the yarn by simultaneously drawing and texturing the yarn by false-twisting at a temperature of from 140° to 200° C.
Claim 3
Dependent Claim
31 words
A process as claimed in claim 1 wherein the stretched yarn is interlaced by means of an air interlacing nozzle at the end of the spinning duct before being wound up.
Claim 4
Dependent Claim
23 words
A process as claimed in claim 1 wherein the yarn is interlaced to a level of from 100 to 1000 entanglements per meter.
Claim 5
Dependent Claim
17 words
A process as claimed in claim 1 wherein the yarn is interlaced by an air interlacing nozzle.
References Cited (Backward Citations)
US3443292A
Cited
USRE28254E
Cited
US3583147A
Cited
US3706192A
Cited
US3946548A
Cited
US3772872A
Cited
US3995420A
Cited
US3973386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |