Electrically powered hand-held screw driver

Details Electrically powered hand-held screw driver Electrically powered hand-held screw driver

2006-09-05

2006-09-05

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Responsive to movement of work

C081S467000, C081S473000

Reexamination Certificate

active

07100482

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).

REFERENCES:
patent: 5134909 (1992-08-01), Sasaki
patent: 5372206 (1994-12-01), Sasaki et al.
patent: 5568849 (1996-10-01), Sasaki et al.
patent: 5601387 (1997-02-01), Sanford et al.
patent: 5682800 (1997-11-01), Jore
patent: 5947210 (1999-09-01), Sasaki et al.
patent: 6109149 (2000-08-01), Neumaier
patent: 6665923 (2003-12-01), Phillips et al.
patent: 6851343 (2005-02-01), Sasaki
patent: 2002/0178877 (2002-12-01), Kikuchi et al.

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