A HANDHELD ROTARY TOOL DRIVEN BY WATER TURBINE

摘要

The invention provides a handheld rotary accessory (10) which includes an accessory body (12), and a water driven turbine (16) mounted on the accessory body (12); the water driven turbine (16) having a turbine wheel (20) mounted for rotation about a turbine wheel rotational axis (22), and having a plurality of circumferentially spaced turbine wheel blades (46) each of which has a radially inner edge and a radially outer edge. The accessory (10) also includes a turbine feed water arrangement which includes a feed water inlet (18) which is connectable to a pressurised water supply and a nozzle (50) connected in flow communication with the feed water inlet (18), the nozzle (50) being positioned radially inwardly of the radially inner edges of the blades (46). The invention extends to a method of rotatably driving a utility accessory which forms part of a handheld rotary accessory.