Patent ID: 6793023
Filing Date: 2004-09-21
Classification: B25D,B25F

Abstract:
A hand power tool selected from the group consisting of drill and an impact drill, comprising a machine housing; a drilling spindle; a drive motor for driving said drilling spindle in at least rotating fashion; a tool mount, said drilling spindle absorbing loosening or tightening torque when a tool is replaced and is coupleable in torsion-resistant fashion to a part of said machine housing; an arresting mechanism for coupling said drilling spindle to said part of said machine housing, said arresting mechanism being located between said drilling spindle and said part of said machine housing; an intermediate shaft on which said arresting mechanism is located and which is joined in turnable fashion with said drilling spindle, said intermediate shaft being coupleable with said drilling spindle; at least one gear stage coupling said intermediate shaft with said drilling spindle and opening automatically when torque is transferred from said drive motor to said tool mount and locking automatically when the torque is transferred from said tool mount in an opposite direction; and a safety clutch incorporated in said arresting mechanism and located on said intermediate shaft.