Patent ID: 7032476

Claim:
A torque adjustable tool comprising: an active member ( 10 ) having a first clutch portion ( 13 ) at a first end thereof and a passive member ( 20 ) having a second clutch portion ( 22 ) at a first end thereof, the second clutch portion ( 22 ) being removably engaged with the first clutch portion ( 13 ), a safety device ( 30 ) mounted to the active member ( 10 ) and the passive member ( 20 ), the safety device ( 30 ) having a control member ( 31 ) and a spring ( 32 ) located between the control member ( 31 ) and the first and second clutch portions ( 13 , 22 ), the control member ( 31 ) including an inner threaded periphery ( 310 ) defined in a first end thereof and the spring ( 32 ) received an interior ( 311 ) of the control member ( 31 ), one end of the spring ( 32 ) stopped at an enlarged portion at the first end of the passive member ( 20 ) and the other end of the spring ( 32 ) being stopped at an inner periphery of a second end of the control member ( 31 ), a clamping portion ( 312 ) connected to the second end of the control member ( 31 ) and a locking portion ( 313 ) defined in an inner periphery of the clamping portion ( 312 ) so as to be connected to a threaded outer periphery ( 23 ) defined in an outer periphery of the passive member ( 20 ), a plurality of slots ( 314 ) defined through the clamping portion ( 312 ) such that the clamping portion ( 312 ) is capable of closing inward and opening outward, a locking device ( 40 ) having a locking member ( 41 ) which locks the active member ( 10 ) to be integral with the passive member ( 20 ), a clamp ( 33 ) mounted to an outer periphery of the clamping portion ( 312 ) so as to stop the locking member ( 41 ) from disengaging from the clamping portion ( 312 ).