US3640064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novelty yarn
Assignee: Celanese Corp
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Filing: 1970-01-19
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Granted: 1972-02-08
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Expires: 1990-01-19
Abstract
Abstract A continuous filament slub yarn is described which comprises a substantially unbulked core yarn and an auxiliary yarn having slubbed and unslubbed portions along its linear length. The auxiliary yarn supplies the slubs in a random distribution and random size along the length of the yarn by looping upon itself and attaching to the core yarn by interlacing at least some of the auxiliary yarn filaments through the core yarn.
Inventors
- 👤 Clifford W Palm
- 👤 William R Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:43
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/162; D02G3/00; D02G3/22; D02G3/34
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A continuous, multifilament slub yarn comprising a composite of a multifilament core yarn and a multifilament auxiliary yarn having slubbed and unslubbed portions along its linear length, said core yarn being substantially unslubbed and said auxiliary yarn having slubs of continuous filaments looped upon themselves with at least some of said auxiliary yarn filaments being interlaced through said core filaments, said slubs being randomly distributed along the linear length of said yarn and being random in size, said yarn having at least 200 slubs per 1,000 yards of yarn, at least 50 percent of said slubs having a denier ratio of yarn denier to slub denier of at least about 1.1 to less than 3.0 with the remainder having a denier ratio of at least 3.0, the spacing between slubs being greater than about 0.5 inch and not more than about 120 inches and the average slub length being less than 2 inches.
Claim 2
Dependent Claim
153 words
A continuous, multifilament slub yarn comprising a composite of a multifilament core yarn and a multifilament auxiliary yarn having slubbed and unslubbed portions along its linear length, said core yarn being substantially unslubbed and said auxiliary yarn having slubs of continuous filaments looped upon themselves with at least some of said auxiliary yarn filaments being interlaced through said core filaments, said slubs being randomly distributed along the linear length of said yarn and being random in size, said yarn having at least 200 slubs per 1,000 yards of yarn, at least 50 percent of said slubs having a denier ratio of yarn denier to slub denier of at least about 1.1 to less than 3.0 with the remainder having a denier ratio of at least 3.0, the spacing between slubs being greater than about 0.5 inch and not more than about 120 inches and the average slub length being less than 2 inches.
Claim 3
Dependent Claim
19 words
The slub yarn of claim 1 wherein the slubs vary in length from about 0.375 to about 2.0 inches.
Claim 4
Dependent Claim
16 words
The slub yarn of claim 1 wherein the average slub length is more than 1 inch.
Claim 5
Dependent Claim
17 words
The slub yarn of claim 1 wherein the average distance between slubs is 14 to 15 inches.
Claim 6
Dependent Claim
20 words
The slub yarn of claim 1 wherein at least one of said core yarn and auxiliary yarn is cellulose acetate.
Claim 7
Dependent Claim
19 words
The slub yarn of claim 1 wherein the core yarn and the auxiliary yarn both contain an individual twist.
Claim 8
Dependent Claim
15 words
The slub yarn of claim 1 wherein the auxiliary and core yarn are twisted together.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |