Patent US4069363A successfully refreshed from Google Patents.
US4069363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crimpable nylon bicomponent filament and fabrics made therefrom
Assignee: EIDP Inc
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Filing: 1976-07-06
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Granted: 1978-01-17
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Expires: 1996-07-06
Abstract
Abstract A crimpable, nylon bicomponent filament having a sheath of a selected polyamide on an eccentric core of a random copolymer of hexamethylene dodecanedioamide and ε-caproamide units. The copolymer contains about 25-45% by weight of ε-caproamide units.
Inventors
- 👤 William Benjamin Segraves
- 👤 Kenneth Lee Mulholland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:11
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2909; Y10T428/2913; Y10T428/2922; Y10T428/2924; Y10T428/2929; Y10T428/2931; Y10T428/2973; Y10T442/00; Y10T442/40; Y10T442/444
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
80 words
A fabric comprising yarn of non-precrimped nylon filament consisting essentially of two, continuous, adherent, eccentric components, one component being a sheath consisting essentially of a homopolymer selected from the group consisting essentially of polyhexamethylene dodecanedioamide, polyhexamethylene adipamide, and poly-ε-caproamide, the other component being a core consisting essentially of a random copolymer of hexamethylene dodecanediomamide and ε-caproamide units, said copolymer consisting about 25-45% by weight of ε-caproamide units, said yarn being made into said fabric without precrimping and is thereafter crimped.
Claim 2
Dependent Claim
80 words
A fabric comprising yarn of non-precrimped nylon filament consisting essentially of two, continuous, adherent, eccentric components, one component being a sheath consisting essentially of a homopolymer selected from the group consisting essentially of polyhexamethylene dodecanedioamide, polyhexamethylene adipamide, and poly-ε-caproamide, the other component being a core consisting essentially of a random copolymer of hexamethylene dodecanediomamide and ε-caproamide units, said copolymer consisting about 25-45% by weight of ε-caproamide units, said yarn being made into said fabric without precrimping and is thereafter crimped.
Claim 3
Dependent Claim
16 words
The fabric of claim 1 wherein said fabric is at least the leg portion of hosiery.
Claim 4
Dependent Claim
15 words
The fabric of claim 1 wherein said yarn is made into said fabric by knitting.
Claim 5
Dependent Claim
52 words
A crimpable non-precrimped nylon filament consisting essentially of two, continuous, adherent, eccentric components, one component being a sheath consisting essentially of polyhexamethylene dodecanedioamide and the other component being a core consisting essentially of a random copolymer of hexamethylene dodecanedioamide and ε-caproamide units, said copolymer containing about 25-45% by weight of ε-caproamide units.
Claim 6
Dependent Claim
52 words
A crimpable non-precrimped nylon filament consisting essentially of two, continuous, adherent, eccentric components, one component being a sheath consisting essentially of polyhexamethylene dodecanedioamide and the other component being a core consisting essentially of a random copolymer of hexamethylene dodecanedioamide and ε-caproamide units, said copolymer containing about 25-45% by weight of ε-caproamide units.
Claim 7
Dependent Claim
79 words
A crimpable non-precrimped nylon filament suitable for yarn for making into fabric without precrimping and for being crimped thereafter, said filament consisting essentially of two, continuous, adherent eccentric components, one component being a sheath consisting essentially of a homopolymer selected from the group consisting of polyhexamethylene dodecanedioamide, polyhexamethylene adipamide and, poly-ε-caproamide, the other component being a core consisting essentially of a random compolymer of hexamethylene dodecanedioamide and ε-caproamide units, said copolymer containing about 25-45% by weight of ε-caproamide units.
Claim 8
Dependent Claim
79 words
A crimpable non-precrimped nylon filament suitable for yarn for making into fabric without precrimping and for being crimped thereafter, said filament consisting essentially of two, continuous, adherent eccentric components, one component being a sheath consisting essentially of a homopolymer selected from the group consisting of polyhexamethylene dodecanedioamide, polyhexamethylene adipamide and, poly-ε-caproamide, the other component being a core consisting essentially of a random compolymer of hexamethylene dodecanedioamide and ε-caproamide units, said copolymer containing about 25-45% by weight of ε-caproamide units.
Claim 9
Dependent Claim
15 words
The filament of claim 5, said copolymer containing about 35% by weight of ε-caproamide units.
Claim 10
Dependent Claim
15 words
A fabric from yarn comprised of at least one filament as defined in claim 5.
Claim 11
Dependent Claim
13 words
The filament of claim 5, wherein said sheath consists essentially of polyhexamethylene adipamide.
Claim 12
Dependent Claim
12 words
The filament of claim 5, wherein said sheath consists essentially of poly-ε-caproamide.
Claim 13
Dependent Claim
15 words
The filament of claim 5, wherein said core is 30-70% by weight of the filament.
Claim 14
Dependent Claim
9 words
Staple fibers cut from the filament of claim 5.
Claim 15
Dependent Claim
19 words
The filament of claim 5 wherein the amount of said ε-caproamide units present is up to 40% by weight.
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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |