Electric vacuum cleaner suction tool

摘要

The suction tool (2) has a rotary brush roller (7) adjacent the suction opening (6) and a rotary drive shaft, provided with a turbine (9) which is driven by the air stream fed through the housing (3) of the suction tool, coupled to the brush roller via a drive element (11). The turbine can rotate relative to the drive shaft, with a transmission element between them providing a variable ratio between the turbine rotation and the drive shaft rotation, allowing the drive shaft to rotate at a slower rate.