Patent ID: 6612588
Filing Date: 2003-09-02
Classification: B23B,Y10S,Y10T

Abstract:
An arrangement for transmitting a torque from a power tool to a working tool releasably connectable with the power tool, comprising:a shank (2) forming part of the working tool (1) and having a first region (B1) conically widening in an operational direction of the working tool (1), a second region (B2) adjoining the first region at an end of the first region (B1) facing in the operational direction, the second region (B2) having a circumferential groove (5), a third region (B3) adjoining the second region (B2) at an end of the second region (B2) facing in the operational direction, a fourth, cylindrical region (B4) adjoining the third region (B3) in the operational direction, at least two first drive grooves (3) extending parallel to a working tool axis over all of the shank regions (B1, B2, B3, B4), and at least one second drive groove (4) extending in third and fourth regions (B3, B4) of the shank (2); and a chuck (10) having an opening (13) conically widening in the operational direction of the working tool (1) for receiving the shank (2), at least one locking element (21) projecting into the receiving opening (13) of the chuck (10) for engaging the circumferential groove (5) of the chuck (2), at least two first drive dogs (16) projecting into the receiving opening (13) for engaging in at least two first drive grooves (3) of the shank (2) to provide for joint rotation of the shank (2) and the chuck (10), and at least one second drive dog (17) projecting into the receiving opening (13) for engaging in the at least one second drive groove (4) of the shank (2).