US4159618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite yarn
Assignee: Albany International Corp
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Filing: 1978-03-13
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Granted: 1979-07-03
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Expires: 1998-03-13
Abstract
Abstract The disclosure is of a high temperature resistant, composite yarn useful in the manufacture of woven and knitted fabrics for high temperature applications. The yarn of the invention comprises a core of a twisted, multi-filament or spun yarn and an outer coating or sheath of a high temperature resistant, synthetic, polymeric resin. The multi-filaments or staple fibers of the core are selected from high temperature resistant, synthetic materials. The outer coating comprises a plurality of coating layers intimately bonded to each other and to the twisted core so as to give the composite yarn of the invention an outward appearance and other characteristics of a monofilament. The composite yarn of the invention combines the properties of a monofilament and a multi-filament or staple yarn and is useful in weaving high temperature resistant fabrics.
Inventors
- 👤 Jerry G. Sokaris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:48
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/44; D02G3/443; D02G3/22; D02G3/40; D02G3/404; Y; Y10; Y10S; Y10S57/00; Y10S57/904; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
A high temperature resistant, composite yarn having the appearance and physical characteristics of a monofilament yarn, which comprises; a core of a twisted, multi or spun filament yarn, said filament being of a high temperature resistant, synthetic material; and an outer coating of a high temperature resistant, synthetic, polymeric resin, said coating comprising a plurality of coating layers, including a plurality of inner layers intimately bonded to the core and filling the helix of the twist in the core yarn only and outer layers being bonded to the inner layers and encapsulating the inner layers and the core so as to give the composite yarn the appearance and characteristics of a mono-filament.
Claim 2
Dependent Claim
112 words
A high temperature resistant, composite yarn having the appearance and physical characteristics of a monofilament yarn, which comprises; a core of a twisted, multi or spun filament yarn, said filament being of a high temperature resistant, synthetic material; and an outer coating of a high temperature resistant, synthetic, polymeric resin, said coating comprising a plurality of coating layers, including a plurality of inner layers intimately bonded to the core and filling the helix of the twist in the core yarn only and outer layers being bonded to the inner layers and encapsulating the inner layers and the core so as to give the composite yarn the appearance and characteristics of a mono-filament.
Claim 3
Dependent Claim
27 words
The composite yarn of claim 1 wherein the filaments are multi-filaments selected from the group consisting of a glass, aramid, carbon, graphite, polybenzimidazole, polyoxodiazole and mixtures thereof.
Claim 4
Dependent Claim
29 words
The composite yarn of claim 1 wherein the core yarn is a spun yarn of staple fibers selected from the group consisting of aramid, ceramic, novaloid and mixtures thereof.
Claim 5
Dependent Claim
13 words
The composite yarn of claim 2 wherein the filament selected is an aramid.
Claim 6
Dependent Claim
13 words
The composite yarn of claim 2 wherein said filament selected is a novaloid.
Claim 7
Dependent Claim
12 words
The composite yarn of claim 3 wherein the fiber selected is ceramic.
Claim 8
Dependent Claim
29 words
The composite yarn of claim 1 wherein the resin is selected from the group consisting of polysulfones, organopolysilicones, polyphenylene sulfide, polypoxides, polyesters, polyester-imide, polyamide-imide, polyimides, polyquinoxalines and mixtures thereof.
Claim 9
Dependent Claim
13 words
The composite yarn of claim 7 wherein the resin selected is a polyamide-imide.
Claim 10
Dependent Claim
13 words
The composite yarn of claim 7 wherein the resin selected is a polyimide.
Claim 11
Independent Claim
106 words
A method of preparing a high temperature resistant composite yarn having the appearance and physical characteristics of a monofilament yarn, which comprises; providing a core of a twisted, multi- or spun filament yarn, said multi-filament or spun yarn being of a high-temperature resistant, synthetic material; sequentially layering a plurality of relatively thin coating layers of a high temperature resistant, synthetic, polymeric resin in the helix of the core yarn until said helix is filled; and covering the helix filled yarn with a coating of a high temperature resistant, synthetic, polymeric resin whereby there is obtained a composite yarn having the appearance and characteristics of a monofilament.
Claim 12
Independent Claim
106 words
A method of preparing a high temperature resistant composite yarn having the appearance and physical characteristics of a monofilament yarn, which comprises; providing a core of a twisted, multi- or spun filament yarn, said multi-filament or spun yarn being of a high-temperature resistant, synthetic material; sequentially layering a plurality of relatively thin coating layers of a high temperature resistant, synthetic, polymeric resin in the helix of the core yarn until said helix is filled; and covering the helix filled yarn with a coating of a high temperature resistant, synthetic, polymeric resin whereby there is obtained a composite yarn having the appearance and characteristics of a monofilament.
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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) | 1982-07-02 | 1983-01-01 | 1983-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-02 | 1987-01-01 | 1987-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-02 | 1991-01-01 | 1991-07-03 | $7700.00 | Window Closed / Lapsed |