Spinning Rotor for an Open-End Spinning Machine having a Friction-Enhancing Lining Made of an Elastomeric Material, and Open-End Spinning Machine

Abstract

A spinning rotor for an open-end spinning device includes a rotor shaft, via which the spinning rotor is driven with the aid of a belt. A contact area is on the rotor shaft for engagement with the belt. A friction coefficient-increasing lining made of an elastomeric material is applied along at least part of the contact area.

1 - 10 . (canceled) 
     
     
         11 . A spinning rotor for an open-end spinning device, the spinning rotor comprising:
 a rotor shaft, via which the spinning rotor is driven with the aid of a belt;   a contact area on the rotor shaft for the belt; and   a friction coefficient-increasing lining made of an elastomeric material along at least part of the contact area.   
     
     
         12 . The spinning rotor as in  claim 11 , wherein the lining comprises an overall width (b) that is less than a width (B) of the belt provided for driving the spinning rotor. 
     
     
         13 . The spinning rotor as in  claim 11 , wherein lining is applied onto the rotor shaft as multiple spaced-apart strips. 
     
     
         14 . The spinning rotor as in  claim 11 , wherein the lining comprises a thickness (d) of 1 mm or less. 
     
     
         15 . The spinning rotor as in  claim 11 , further comprising at least one recess formed in the rotor shaft in the contact area, the lining contained in the recess. 
     
     
         16 . The spinning rotor as in  claim 15 , wherein the lining is co-planar with adjacent surfaces of the rotor shaft via grinding of the rotor shaft and lining. 
     
     
         17 . The spinning rotor as in  claim 11 , wherein the fining is formed from nitrile rubber (NBR) or hydrogenated acrylonitrile butadiene rubber (HNBR). 
     
     
         18 . The spinning rotor as in  claim 11 , wherein the lining is formed of a polyurethane elastomer (PUR). 
     
     
         19 . The spinning rotor as in  claim 11 , wherein the rotor shaft is made of a metal. 
     
     
         20 . An open-end spinning device comprising a spinning rotor and a driving belt, wherein the spinning rotor is in accordance with  claim 11 .