US3854313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of slub yarns
Assignee: Hoechst AG
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Filing: 1973-01-09
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Granted: 1974-12-17
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Expires: 1993-01-09
Abstract
Abstract A process for the manufacture of slub yarns from continuous filaments, which comprises feeding continuous filaments through the inlet orifice of a guide tube at a feed rate superior to the withdrawal rate at the outlet orifice, and sucking them into a connecting tube by means of a sucking jet in such a manner that an increasingly enlarging open loop is formed; wherein a gaseous medium, in intervals and periods of time programmed by a control system, is blown into the connecting tube, thereby passing through the feeder tube of a blowing jet mounted to the end of the connecting tube which is adjacent to the guide tube; the gaseous medium causing a ligature of the neck of the open loop of the yarn, which loop so ligatured is subsequently united over its total length with the continuous filament.
Inventors
- 👤 N Heichlinger
- 👤 K Andiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:40
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/164; D02G1/162
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
A process for the manufacture of slub yarns from continuous filaments, which comprises feeding continuous filaments through the inlet orifice of a guide tube at a feed rate superior to the withdrawal rate at the outlet orifice, and sucking them into a connecting tube by means of a sucking jet in such a manner that an increasingly enlarging open loop is formed; wherein a gaseous medium, in intervals and periods of time programmed by a control system, is blown into the connecting tube, thereby passing through the feeder tube of a blowing jet mounted to the end of the connecting tube which is adjacent to the guide tube; the gaseous medium causing a ligature of the neck of the open loop of the yarn, which loop so ligatured is subsequently united over its total length with the continuous filament.
Claim 2
Dependent Claim
139 words
A process for the manufacture of slub yarns from continuous filaments, which comprises feeding continuous filaments through the inlet orifice of a guide tube at a feed rate superior to the withdrawal rate at the outlet orifice, and sucking them into a connecting tube by means of a sucking jet in such a manner that an increasingly enlarging open loop is formed; wherein a gaseous medium, in intervals and periods of time programmed by a control system, is blown into the connecting tube, thereby passing through the feeder tube of a blowing jet mounted to the end of the connecting tube which is adjacent to the guide tube; the gaseous medium causing a ligature of the neck of the open loop of the yarn, which loop so ligatured is subsequently united over its total length with the continuous filament.
Claim 3
Dependent Claim
25 words
A process as claimed in claim 1, wherein the gaseous medium is guided through the blowing jet in the suction direction of the sucking jet.
Claim 4
Dependent Claim
28 words
A process as claimed in claim 1, wherein the gaseous medium is guided through the blowing jet in a counter-current of the suction direction of the sucking jet.
Claim 5
Dependent Claim
31 words
A process as claimed in claim 1, wherein the loops ligatured only at their neck are united over their total length with the continuous filament by interlacing, using a gaseous medium.
Claim 6
Dependent Claim
72 words
A process as claimed in claim 1, wherein the gaseous medium for interlacing the loops ligatured at their neck is introduced into the interlacing jet in a dicontinuous manner, in the same intervals and periods of time programmed, but with such a time lag as compared to the feed of the blowing jet that the loop ligatured only at its neck is completely united with the continuous filament in the interlacing jet.
Claim 7
Dependent Claim
18 words
A process as claimed in claim 1, wherein an additional continuous filament is introduced into the interlacing jet.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |