Multi-component spun yarn and method and apparatus for manufacturing same
Patent 4302925 Issued on December 1, 1981. Estimated Expiration Date: 
November 30, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 30, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2552210 3445993 3605395 3722202 3831369 Wrapped yarn Roving and process for its manufacture Method and apparatus for the manufacture of core yarn in an open-end spinning device Patent #: 4083173 InventorsAssigneeApplicationNo. 06/098843 filed on 11/30/1979US Classes:57/6, With other operations57/210, Covered or wrapped57/3, Covering or wrapping57/409, Plural or variable feed57/5With loose fibersExaminersPrimary: Watkins, DonaldAttorney, Agent or FirmInternational ClassD02G 3/36 (20060101)Foreign Application Priority Data1977-08-23 JPAbstractMulti-component spun yarn. The surface of an open-end spun yarn (staple fibers) having a small degree of twist is covered with a continuous yarn twisted in the same direction. The length of the continuous yarn is greater than that of the open-end spun yarn. Manufacturing method and apparatus are also disclosed.Field of SearchCovering or wrappingWith loose fibers With other operations With twisting of core or product With plural strands STRAND STRUCTURE Covered or wrapped Elastomeric material core Including crimped or bulked material Crimped or bulked core Stranded layer Multifilament yarns Particular cross section Staple fiber blends False twist type | |
