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US 4,050,235 AGranted
Spinning rotor for open-end spinning unit
AssigneeFried. Krupp Gesellschaft mit beschrankter Haftung
InventorsRolf Neubert, Rolf Wehling
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AssigneeFried. Krupp Gesellschaft mit beschrankter Haftung
InventorsRolf Neubert, Rolf Wehling
Estimating the term…
In a spinning rotor for an open end spinning unit, the rotor being provided with a bore extending along its axis of rotation to accommodate a yarn extraction tube and being formed to define a fiber collection trough and an intake portion whose cross section widens in the direction toward the trough, the intake portion presenting a radially outwardly extending projecting portion which merges into and defines one boundary of the fiber collecting trough, the region where the projecting portion merges with the trough constituting the region of maximum diameter of the trough and the side of the trough opposite the projecting portion being defined by the spinning rotor bottom surface, the accumulation of dirt in the fiber collection trough is prevented by forming the collection trough so that the radially outermost end of the surface of the projecting portion defines the maximum diameter of the trough, imparting to the portion of the trough adjacent the rotor bottom surface a configuration such that the diameter of the trough in this region is less than the maximum diameter, and locating the projecting portion so that the axial distance between the rotor bottom surface and the radially innermost end of the projecting portion is between 1/16 and 1/6 of the maximum diameter of the fiber collecting trough.
In a spinning rotor for an open-end spinning unit, the rotor defining a fiber collection trough and an intake portion whose cross section widens in the direction toward the fiber collecting trough, the intake portion being formed and disposed to provide a radially outwardly extending projecting portion presenting a surface which merges into and defines one boundary of the fiber collecting trough and which presents a region in which the rotor diameter is increased, the boundary of the fiber collecting trough opposite the projecting portion being defined by the spinning rotor bottom surface, the radially outermost end of the surface of the projecting portion defining the maximum diameter of the fiber collecting trough, and a portion of the trough between the outermost end of the projecting portion surface and the bottom surface, and adjacent the rotor bottom surface, presenting a region in which the diameter of the trough is less than such maximum diameter, the improvement wherein the axial distance between the projection of said rotor bottom surface and the radially innermost end of said projecting portion surface, measured at the level of the outermost end of said projecting portion surface, is between one-sixteenth and one-sixth of said maximum diameter of said fiber collecting trough.
Dependencies are inferred from the claim text.