Patent US3607611A successfully refreshed from Google Patents.
US3607611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite filament having crimpability and latent adhesivity
Assignee: Kanegafuchi Spinning Co Ltd
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Filing: 1968-12-13
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Granted: 1971-09-21
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Expires: 1988-12-13
Abstract
Abstract A composite filament suitable for manufacturing ladies'' stockings having a crimpability comprising at least two fiberforming components differing in shrinkability, which has such a particular cross section that one component is interposed into the other component, for example, in a wedge-shape and occupies only 5 to 30 percent of the peripheral surface of the filament, is manufactured by flowing two independent same or different spinning materials in opposite directions to each other in two ducts each connecting to a common conduit and combining them and interposing a thin layerlike flow of another spinning material different from the above-described spinning materials between the two spinning material flows at the combined portion in the abovedescribed particular cross-sectional shape and then extruding the thus combined spinning materials through the conduit from a common orifice.
Inventors
- 👤 Masao Matsui
- 👤 Susumu Tokura
- 👤 Masahiro Yamabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:28
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/28; D01D5/30; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/2973
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
25 words
The filament as claimed in claim 1 , wherein the length of said wedge is more than 1.5 times of the width of said wedge.
Claim 2
Dependent Claim
26 words
The filament as claimed in claim 1, wherein the surface area occupied by said wedge is 5- 20 percent of the total surface of the filament.
Claim 3
Dependent Claim
26 words
The filament as claimed in claim 1, wherein the volume occupied by the wedge-forming component is 5- 50 percent of the total volume of the filament.
Claim 4
Dependent Claim
29 words
The filament as claimed in claim 1, wherein said wedge-forming component has a softening and adhesion-beginning temperature of at least 5* C. lower than that of the other component.
Claim 5
Dependent Claim
36 words
The filament as claimed in claim 1, wherein each of said components is a polymer selected from the group consisting of polyamides, polyesters, polyacrylonitriles, polyolefins, polystyrenes, polycarbonates, polyesterethers, polyvinyl chloride, polyvinylidene chloride, and polymer blends thereof.
Claim 6
Dependent Claim
23 words
The filament as claimed in claim 1, wherein wedge-forming component and another component are nylon-6 and a mixture of nylon-6 with polyhexamethyleneisophthalamide respectively.
Claim 7
Dependent Claim
22 words
The filament as claimed in claim 1, wherein wedge-forming component and another component are mixture of nylon-6 with polyhexamethyleneadipamide and nylon-6 respectively.
Claim 8
Dependent Claim
16 words
The filament as claimed in claim 1, wherein the cross section of the filament is circular.
Claim 9
Dependent Claim
16 words
The filament as claimed in claim 1, wherein the cross section of the filament is noncircular.
Claim 10
Dependent Claim
24 words
The filament as claimed in claim 1, wherein the length of said wedge is more than 1.5 times of the width of said wedge.
Claim 11
Dependent Claim
26 words
The filament as claimed in claim 1, wherein the surface area occupied by said wedge is 5- 20 percent of the total surface of the filament.
Claim 12
Dependent Claim
26 words
The filament as claimed in claim 1, wherein the volume occupied by the wedge-forming component is 5- 50 percent of the total volume of the filament.
Claim 13
Dependent Claim
29 words
The filament as claimed in claim 1, wherein said wedge-forming component has a softening and adhesion-beginning temperature of at least 5* C. lower than that of the other components.
Claim 14
Dependent Claim
29 words
The filament as claimed in claim 14, wherein said wedge-forming component has a softening and adhesion-beginning temperature of at least 10* C. lower than that of the other components.
Claim 15
Dependent Claim
29 words
The filament as claimed in claim 14, wherein said wedge-forming component has a softening and adhesion-beginning temperature of at least 10* C. lower than that of the other components.
Claim 16
Dependent Claim
64 words
A filament as defined in claim 1, wherein the body of said filament other than said wedgelike component is composed of two components of different shrinkability, and said wedgelike component possesses the property of latent adhesivity relative to the other two components which adhesive property begins to exhibit itself at a temperature at least 5* C. lower than that of the other two components.
Claim 17
Dependent Claim
38 words
The filament as claimed in claim 17, wherein each of said components is a polymer selected from the group consisting of polyamides, polyesters, polyacrylonitriles, polyolefins, polystyrenes, polycarbonates, polyesterethers, polyvinyl chloride, polyvinylidene chloride, copolymers thereof and polymer blends thereof.
Claim 18
Dependent Claim
23 words
The filament as claimed in claim 17, wherein wedge-forming component and another component are nylon-6 and a copolymer of nylon-6 with polyhexamethyleneisophthalamide respectively.
Claim 19
Dependent Claim
22 words
The filament as claimed in claim 17, wherein wedge-forming component and another component are copolymer of nylon-6 with polyhexamethyleneadipamide and nylon-6 respectively.
Claim 20
Dependent Claim
16 words
The filament as claimed in claim 17, wherein the cross section of the filament is circular.
Claim 21
Dependent Claim
16 words
The filament as claimed in claim 17, wherein the cross section of the filament is noncircular.
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |