Patent ID: 6305481
Filing Date: 2001-10-23
Classification: B25B,B25F,F16D

Abstract:
A clutch mechanism for use in a power-driven tool, comprising:a freely rotatable internal gear of a planetary gear interposed between a motor and a spindle,a clutch assembly provided on the freely rotatable internal gear,a plate member disposed so as to abut the clutch assembly, said plate member being biased by a biasing spring in order to keep the clutch assembly in an engaged state up to a release torque, andan adjustment means for adjusting the biasing force acting on the plate member in order to set the release torque of the clutch assembly, the plate member being fixable by means of said adjustment means for increasing the release torque of the clutch assembly,the plate member being elastic in order to release the engagement of the clutch assembly with the plate member in said engaged state, while said plate member is in a fixed position, when a selected maximum torque of the tool is exceeded.