with movement performed by rotating helical blades or other rotary conveyors moving materials in stationary chambers

Full Title

Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement (F26B13/00 takes precedence ) > with movement performed by rotating helical blades or other rotary conveyors moving materials in stationary chambers

Child Classifications

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• F26B 17/20 the axis of rotation being horizontal or slightly inclined
• F26B 17/22 the axis of rotation being vertical or steeply inclined