US4364998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spunlike yarns
Assignee: EIDP Inc
•
Filing: 1981-07-20
•
Granted: 1982-12-21
•
Expires: 2001-07-20
Abstract
Abstract Spunlike yarns having free ends are made from continuous filament yarn by fluid-jet texturing. The fibrous elements that make up the yarn have irregular and varying cross-sectional shapes, said fibrous elements being forked and merged in a fortuitous manner. The spunlike yarns may also contain fibrous elements that extend substantially continuously throughout the length of the yarn.
Inventors
- 👤 Lun-Yan Wei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:22
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/24; D02G1/00; D02G1/16; D02G1/165; D02G3/32; Y; Y10; Y10S; Y10S57/00; Y10S57/907; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2976; Y10T428/2978
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
152 words
A yarn consisting essentially of a plurality of synthetic fibrous elements having an irregular and varying cross section and being forked and merged in a fortuitous manner, the cross-sectional area and cross-sectional shape of each fibrous element changing along its length and some of said fibrous elements terminating in free ends, the cross-sectional area and cross-sectional shape of most of said fibrous elements being of approximately the same cross-sectional area and cross-sectional shape as those fibrous elements that terminate in free ends, and those fibrous elements that do not have approximately said area and said shape being forked to form fibrous elements of approximately said area and said shape, many of said fibrous elements having at least one ragged side that extends longitudinally of the fibrous elements, the fibrous elements being frequently entangled along the length of the yarn, said yarn having 10 to 150 free ends per centimeter of yarn length.
Claim 2
Dependent Claim
152 words
A yarn consisting essentially of a plurality of synthetic fibrous elements having an irregular and varying cross section and being forked and merged in a fortuitous manner, the cross-sectional area and cross-sectional shape of each fibrous element changing along its length and some of said fibrous elements terminating in free ends, the cross-sectional area and cross-sectional shape of most of said fibrous elements being of approximately the same cross-sectional area and cross-sectional shape as those fibrous elements that terminate in free ends, and those fibrous elements that do not have approximately said area and said shape being forked to form fibrous elements of approximately said area and said shape, many of said fibrous elements having at least one ragged side that extends longitudinally of the fibrous elements, the fibrous elements being frequently entangled along the length of the yarn, said yarn having 10 to 150 free ends per centimeter of yarn length.
Claim 3
Dependent Claim
23 words
The yarn of claim 1 wherein the fibrous elements are entangled to the degree that the yarn has consolidated sections and splayed sections.
Claim 4
Dependent Claim
33 words
The yarn of claim 1 containing up to 90% by weight fibrous elements that extend at least substantially continuously throughout the length of the yarn, said yarn having consolidated sections and splayed sections.
Claim 5
Dependent Claim
25 words
The yarn of claim 3 in which the fibrous elements that extend at least substantially continuously throughout the length of the yarn have smooth sides.
Claim 6
Dependent Claim
26 words
The yarn of claim 3 in which the fibrous elements that extend at least substantially continuously throughout the length of the yarn, are forked and merged.
Claim 7
Dependent Claim
49 words
The yarn of claim 5 in which the fibrous elements that extend at least substantially continuously throughout the length of the yarn has a substantially continuous body portion and a wing portion that is occasionally split from the body portion, said wing portion occasionally ending in a free end.
Claim 8
Dependent Claim
44 words
The yarn of claim 1 in which some of the fibrous elements at least occasionally merge to form a fibrous element having the cross-sectional shape of a "C" or having a cross-sectional shape that requires more than four straight lines to trace its perimeter.
Claim 9
Dependent Claim
30 words
The yarn of claim 7 in which some of the fibrous elements at least occasionally merge to form a fibrous element having a "T," "X," "Y" or "V" cross-sectional shape.
References Cited (Backward Citations)
US3242035A
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US3177557A
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US3884030A
Cited
US3506535A
Cited
US3864903A
Cited
US4100725A
Cited
US4245001A
Cited
US4259393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |