Patent ID: 6695573
Filing Date: 2004-02-24
Classification: B25F,F01D,F05D,Y10S,Y10T

Abstract:
A turbine tool, comprising:a rotatable impeller comprising: a central chamber; at least one primary nozzle oriented to urge said impeller to rotate in a first direction when fluid is expelled therethrough; and at least one secondary nozzle oriented to urge said impeller to rotate in a second direction, opposite said first direction, when fluid is expelled therethrough; a speed control member resiliently deformable when disposed in said chamber to control the amount of fluid expelled via said at least one primary nozzle in response to changes in rotational speed of said impeller; wherein drive fluid supply to said at least one secondary nozzle is generally blocked when said speed control member is present in said chamber, but generally open when said speed control member is not present in said chamber.