Patent ID: 7288022
Filing Date: 2007-10-30
Classification: B24B,F01D

Abstract:
1. A water-driven apparatus for rotating a tool that uses pressurized water as a power source comprising: a watertight housing having a cavity; an impeller having a plurality of blades rotatably mounted in said housing cavity; a water inlet conduit connected to said housing and in fluid communication with said housing cavity and said impeller blades; a water outlet conduit connected to said housing and in fluid communication with said housing cavity; a drive shaft affixed to said impeller, said drive shaft having an axial internal water passage with a terminal opening outside said housing; at least one transverse channel in said impeller, said at lest one transverse channel in fluid communication with said housing cavity at a first end and in fluid communication with said axial internal water passage at a second end; means for removably attaching a tool to said drive shaft; a first bearing mounted in said first wall, said drive shaft and impeller rotatably supported by said first bearing; said housing having a second wall, with an inside surface, the inside surface partially defining in said housing cavity; and a second bearing mounted in said second wall, said drive shaft and impeller rotatably supported by said second bearing.