Patent US6185663B1 successfully refreshed from Google Patents.
US3852946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulk yarn
Assignee: Celanese Corp
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Filing: 1970-11-12
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Granted: 1974-12-10
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Expires: 1990-11-12
Abstract
Abstract A thermally-set bulked yarn comprising at least two yarn ends each of which contain a plurality of helically crimped filaments, wherein the crimps are out of registry with one another, and wherein the helically crimped filaments have varying helix angles.
Inventors
- 👤 J Smith
- 👤 C Delagrange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:02
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/24; D02G1/00; D02G1/02; D02G1/0206; D02G1/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
A steam thermally set and steam false twist bulked multifilament yarn comprising a plurality of false twisted helically crimped filaments, each of said filaments being characterized by varying helical tightness and a plurality of different helix angles along its length, said filaments being out of crimp registry with one another as the yarn issues from the false twister without further processing, said yarn having been false twisted in a venturi type steam jet into which the steam is fed eccentrically of the yarn passageway and the venturi chamber, the steam simultaneously imparting a false twist to the yarn, functioning as the false twist setting fluid in the steam jet and deregistering crimps of adjacent filaments, said yarn being substantially free of loops.
Claim 2
Dependent Claim
122 words
A steam thermally set and steam false twist bulked multifilament yarn comprising a plurality of false twisted helically crimped filaments, each of said filaments being characterized by varying helical tightness and a plurality of different helix angles along its length, said filaments being out of crimp registry with one another as the yarn issues from the false twister without further processing, said yarn having been false twisted in a venturi type steam jet into which the steam is fed eccentrically of the yarn passageway and the venturi chamber, the steam simultaneously imparting a false twist to the yarn, functioning as the false twist setting fluid in the steam jet and deregistering crimps of adjacent filaments, said yarn being substantially free of loops.
Claim 3
Dependent Claim
11 words
The yarn of claim 1 being substantially free of real twist.
Claim 4
Dependent Claim
11 words
The yarn of claim 1 having at least some real twist.
Claim 5
Dependent Claim
15 words
The yarn of claim 1 having from about 0.5 to about 1 turn per inch.
Claim 6
Dependent Claim
26 words
The yarn of claim 1 wherein said yarn is a polymeric material selected from the group consisting of nylon, polyethylene terephthalate and cellulose organic acid esters.
Claim 7
Dependent Claim
20 words
The yarn of claim 1 wherein the total denier is in the range of from about 100 to about 3,000.
Claim 8
Dependent Claim
20 words
The yarn of claim 1 wherein the total denier is in the range of from about 1,000 to about 2,000.
Claim 9
Dependent Claim
11 words
The yarn of claim 1 wherein said filaments comprise cellulose triacetate.
Claim 10
Dependent Claim
27 words
The yarn of claim 1 wherein at least some of said filaments have real S twist and at least some of said filaments have real Z twist.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |