Patent ID: 6497089
Filing Date: 2002-12-24
Classification: D01H

Abstract:
An open-end spinning apparatus within a workstation of an open-end spinning machine containing a plurality of said workstations, said open-end spinning apparatus comprising:a spin rotor having a conical wall defining an open-end of said spin rotor; a rotor cover with a radial surface operably disposable to said conical wall of said spin rotor, said radial surface forming a partial side of a rotor housing in which said spin rotor operates; a rotor cap projecting axially from said radial surface, said rotor cap extending into said open-end of said spin rotor between an inner surface of said conical wall; wherein said rotor cap forms a portion of a yarn removal conduit concentric around the axis of said rotor cap and said spin rotor through which a yarn spun in said spin rotor is removed from said workstation, and said rotor cap forms a fiber feed conduit and a discharge opening through which fibers travel until said fibers are discharged from said discharge opening against said inner surface of said conical wall of said spin rotor; a collar operably disposed on an axial end of said rotor cap distal from said radial surface; and wherein a section of the circumference of said rotor cap defines a recess between said radial surface and said collar, said rotor cap being a greater distance from said inner surface of said conical wall of said spin rotor at said section than the rest of the circumference of said rotor cap due to said defined recess.