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

Child Classifications

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• D01H 4/02 imparting twist by a fluid, e.g. air vortex since 1990 IPC+CPC Available in IPC and CPC
• D01H 4/04 imparting twist by contact of fibres with a running surface since 1990 IPC+CPC Available in IPC and CPC
• D01H 4/28 using electrostatic fields since 1990 IPC+CPC Available in IPC and CPC
• D01H 4/30 Arrangements for separating slivers into fibres; Orienting or straightening fibres since 1990 IPC+CPC Available in IPC and CPC
• D01H 4/38 Channels for feeding fibres to the yarn forming region since 1990 IPC+CPC Available in IPC and CPC
• D01H 4/40 Removing running yarn from the yarn forming region, e.g. using tubes since 1990 IPC+CPC Available in IPC and CPC
• D01H 4/42 Control of driving or stopping since 1990 IPC+CPC Available in IPC and CPC
• D01H 4/48 Piecing arrangements; Control therefor since 1990 IPC+CPC Available in IPC and CPC