Open end spun slub yarn
Patent 4144703 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 3354627 Yarn reserve forming and moving apparatus Patent #: 4023336 InventorAssigneeApplicationNo. 05/889720 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)AbstractMethod and apparatus to produce 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 speed of the yarn is varied by a pivotally mounted lever member which varies the length of the yarn from the exit of the rotor to the yarn delivery rolls. | |
