Patent ID: 6880645
Filing Date: 2005-04-19
Classification: B25B,B25F

Abstract:
1. A pneumatic rotary tool comprising: a housing formed of a plastic material, the housing including a motor receptacle having a front end and an open rear end, and end cover formed separately from the motor receptacle and located at the rear end of the motor receptacle; an air motor disposed within the motor receptacle of the housing; an air inlet supported by the housing and constructed for connection to a source of pressurized air; an air inlet passage extending from the air inlet to the motor for delivering pressurized air to the motor to power the motor to drive an output shaft; an air exhaust supported by the housing; an air exhaust passage extending from the motor to the air exhaust for exhausting air from the motor to outside the tool housing; said air motor comprising a cylindrical support sleeve, the support sleeve having at least one open end, a rotor rotatable within said support sleeve, an end plate at said open end of the support sleeve substantially closing said open end, the end plate having air passaging formed therein, at least part of said air passaging defining a portion of the air inlet passage; and a torque selector at least partially received in the end plate and including a portion disposed in the air passaging defined in the end plate and at least partially blocking the flow of air in the air passaging except through said portion of the torque selector.