Patent ID: 7958945
Filing Date: 2011-06-14
Classification: B25B,B25F

Abstract:
1. A pneumatic tool enabling sectional adjustment of torsional force, the tool comprising: a main body, having an output shaft assembly mounted at a front end of said main body and being provided with a holding portion, an intake coupler, an air intake duct, air exhaust duct, and an accommodation space; a cylinder, being mounted into the accommodation space of the main body and comprising a cylinder tube, two end covers and air vents; a rotor, being eccentrically pivoted into the cylinder and fitted with a movable vane; a plurality of exhaust holes, arranged at one side of the cylinder tube of the cylinder; and an exhaust duct switching member, arranged between the exhaust holes of the cylinder tube and air exhaust duct of the main body, and used to switch the airflow for air exhaust by different exhaust holes.