Patent Number: 7,100,482

Title: Electrically powered hand-held screw driver

Abstract: An electrically powered, hand-held screw driver (2) has a housing (4), a depth stop (6) arranged on this housing (4), a drive motor (20), an axially displaceable tool spindle (8) operatively coupled with a tool holder (11), and a torque coupling (16) arranged between the drive motor (20) and tool spindle (8) and which has a motor-side coupling part (22) and a tool-side coupling part (24) connected to the tool spindle (8) so as to be fixed with respect to rotation relative to it. The two coupling parts (22, 24) can be made to engage with one another and the tool spindle (8) is biased away from the motor-side coupling part (22) by means of a coupling spring (34). The tool-side coupling part (24) has axial movement play (a) relative to the tool spindle (8) and is mechanically coupled with a movement transmitter that is separate from the coupling spring (34).

Inventors: Neumaier; Anton (Furstenfeldbruck, DE)

Assignee: Hilti Aktiengesellschaft

International Classification: B25B 23/00 (20060101); B25B 23/14 (20060101); B25B 23/157 (20060101)

Expiration Date: 9/05/02018