US3851456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic yarn consisting of a mixture of metallic and nonmetallic fibers
Assignee: Nippon Seisen Co Ltd
•
Filing: 1973-07-24
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Granted: 1974-12-03
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Expires: 1993-07-24
Abstract
Abstract Metallic fibers, made for example of stainless steel, are arranged substantially circumferentially of a yarn so as to enclose nonmetallic fibers, such as various synthetic or natural fibers. Each of the metallic fibers has a polygonal cross section, such that the relatively sharp-edged corners of these metallic fibers extend throughout the length of the yarn. The electrostatic charges that have built up on any part of the yarn are efficiently collected by the sharp-edged corners of the metallic fibers and are dissipated throughout their length.
Inventors
- 👤 K Hamada
- 👤 T Kunieda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:22
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/02; D02G3/12; D02G3/44; D02G3/441; Y; Y10; Y10S; Y10S57/00; Y10S57/901
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
An antistatic yarn comprising, in combination: a first plurality of metallic fibers; a second plurality of nonmetallic fibers; each of said metallic fibers having a polygonal cross section to have at least one substantially sharp-edged corner disposed along substantially the entire length of said metallic fiber, said corner serving to collect static charges formed in said yarn and to dissipate said static charges across the entire length of said yarn, said polygonal cross section serving to enhance binding between said metallic fibers and said nonmetallic fibers; and said first plurality of metallic fibers and said second plurality of nonmetallic fibers being combined so that a substantial number of said metallic fibers are arranged adjacent the outer periphery of said antistatic yarn.
Claim 2
Dependent Claim
121 words
An antistatic yarn comprising, in combination: a first plurality of metallic fibers; a second plurality of nonmetallic fibers; each of said metallic fibers having a polygonal cross section to have at least one substantially sharp-edged corner disposed along substantially the entire length of said metallic fiber, said corner serving to collect static charges formed in said yarn and to dissipate said static charges across the entire length of said yarn, said polygonal cross section serving to enhance binding between said metallic fibers and said nonmetallic fibers; and said first plurality of metallic fibers and said second plurality of nonmetallic fibers being combined so that a substantial number of said metallic fibers are arranged adjacent the outer periphery of said antistatic yarn.
Claim 3
Dependent Claim
35 words
An antistatic yarn according to claim 1, wherein said first plurality of metallic fibers is arranged in a plurality of clusters, and wherein said clusters are disposed adjacent the outer periphery of said antistatic yarn.
Claim 4
Dependent Claim
32 words
An antistatic yarn according to claim 1, wherein some of said nonmetallic fibers are arranged in clusters, and wherein each of said clusters is surrounded by a plurality of said metallic fibers.
Claim 5
Dependent Claim
25 words
An antistatic yarn according to claim 1, wherein at least some of said metAllic fibers are arranged substantially linearly along the length of said yarn.
References Cited (Backward Citations)
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US1531862A
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US3288175A
Cited
US3601970A
Cited
US3422460A
Cited
US3582444A
Cited
US3600884A
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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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |