Open end spun slub yarn
Patent 4144702 Issued on March 20, 1979. Estimated Expiration Date: 
March 24, 1998. 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.
March 24, 1998. 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 3113413 3354627 3455095 Yarn reserve forming and moving apparatus Patent #: 4023336 InventorAssigneeApplicationNo. 05/889719 filed on 03/24/1978US Classes:57/409, Plural or variable feed57/209, Slub type57/91, Irregular57/93Speed adjustingExaminersPrimary: Gorenstein, CharlesAttorney, Agent or FirmInternational ClassD02G 3/34 (20060101)AbstractA method of making slub or thick and thin yarns with twist variation on open end spinning machines by changing the speed of the yarn as it exits from the rotor of the open end spinning machine. The method produces a unique slub yarn which has a portion of high twist adjacent the slub in the yarn which has lower yarn twist. | |
