Patent ID: 7192248
Filing Date: 2007-03-20
Classification: B23Q,Y10S

Abstract:
1. An air turbine driven rotary machine tool, comprising: a tool casing; a turbine rotor mounted within the casing for rotation about a rotational axis, the turbine rotor having a plurality of blades equally spaced about the rotational axis; a stator mounted in fixed position upstream of said turbine rotor in the tool casing coaxially aligned with the rotational axis of the turbine rotor and having a plurality of equally spaced stator blades operatively aligned with the rotor blades; an annular cavity defined within the casing and coaxially aligned with the stator and rotor and having an annular open end adjacent the stator blades for supplying air to the stator blades; a spindle coaxially mounted with the turbine rotor in the tool casing for rotation with the turbine rotor; and a tool holder mounted coaxially to the spindle for rotation therewith having an end thereof for operably receiving a bit therein for rotation therewith.