Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Reexamination Certificate
2000-06-16
2003-03-18
Juska, Cheryl A. (Department: 1771)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
C057S210000, C057S211000, C057S218000, C442S197000, C442S310000
Reexamination Certificate
active
06534175
ABSTRACT:
BACKGROUND OF THE INVENTION
Field of the Invention. This invention relates to cut resistant fabric to be used in articles of protective clothing. The fabric is cut resistant by virtue of cut resistant synthetic fibers and metal fibers combined in a particular manner to afford comfort as well as protection.
Description of Related Art. U.S. Pat. Nos. 5,287,690; 5,248,548; 4,470,251; 4,384,449; and 4,004,295, all disclose the use of yarns having metallic fiber cores and high strength synthetic fiber wrappings to make fabrics used in cut resistant articles of clothing.
BRIEF SUMMARY OF THE INVENTION
This invention relates to a cut resistant fabric made with at least one bundle of at least one yarn wherein the yarn comprises at least two strands: at least one of the strands in the bundle having a sheath/core construction with a sheath of cut resistant staple fibers and a metal fiber core; and at least one of the strands in the bundle having cut resistant aramid fibers and being free from metal fibers.
REFERENCES:
patent: 4004295 (1977-01-01), Byrnes, Sr.
patent: 4225442 (1980-09-01), Tremblay et al.
patent: 4384449 (1983-05-01), Byrnes, Sr. et al.
patent: 4470251 (1984-09-01), Bettcher
patent: 4499716 (1985-02-01), Antal et al.
patent: 4825470 (1989-05-01), Horio
patent: 5248548 (1993-09-01), Toon
patent: 5287690 (1994-02-01), Toon
patent: 0 445 872 (1991-09-01), None
Dictionary of Fiber & Textile Technology. KoSa. Charlotte, NC. 199. pp. 188, 222.*
ASTM Designation: D 3884—92, Standard Test Method for Abrasion Resistance of Textile Fabrics (Rotary Platform, Double-Head Method)1, 1992, pp.160-164.
ASTM Designation: F 1790—97, Standard Test Method for Measuring Cut Resistance of Materials Used in Protective Clothing1, 1997, pp. 1-6.
Prickett Larry John
Zhu Reiyao
Befumo Jenna-Leigh
E. I. du Pont de Nemours and Company
Juska Cheryl A.
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