D01H4/22 - CPC Classification Index

ClassID:

121934 ⎘

D01H4/22 - CPC Classification

Classification description:

Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface Cleaning of running surfaces

Sub-classes:

D01H4/24 » in rotor spinning 10
D01H4/26 » in friction spinning 0

Recent Application in this class:

20220195634

2022-06-23

Spinning position with a cleaning nozzle and method of cleaning a yarn forming element

20180030624

2018-02-01

Thread-guiding unit, open-end spinning machine and method for operating a spinning station