Power screwdriver with low-noise torque clutch

Details Power screwdriver with low-noise torque clutch Power screwdriver with low-noise torque clutch

2007-01-23

2007-01-23

Lorence, Richard M. (Department: 3681)

192 clutches and power-stop control

Clutches

Plural clutch-assemblage

C173S178000, C081S475000

Reexamination Certificate

active

11015136

ABSTRACT:
A power screwdriver (1) with a rotationally driven, axially displaceable mounted tool spindle (2) with a low-noise torque clutch (3) which comprises a ratchet-spring biased ratchet coupling (6) driven by a driven ratchet part (12) and a rigid slack clutch spring (7) biased claw coupling (8). The ratchet coupling (6) and the claw coupling (8) are combined using a common, axially displaceable, freely rotatable coupling sleeve (9). The ratchet coupling (6) has opposing oriented, peripheral inclined beveled cams (10) and the claw coupling (8) has opposing oriented catches (11). The driven ratchet part (12) and the coupling sleeve (9) are arranged freely rotatably on an intermediate sleeve (13), which is mounted freely rotatable and axially displaceable on the tool spindle (2). The ratchet spring (5) is arranged between the intermediate sleeve (13) and the coupling sleeve (9) and the clutch spring (7) is arranged between the intermediate sleeve (13) and the tool spindle (2).

REFERENCES:
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patent: 4630512 (1986-12-01), Durr
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patent: 5138916 (1992-08-01), Sato et al.
patent: 5538089 (1996-07-01), Sanford
patent: 6109149 (2000-08-01), Neumaier
patent: 6739225 (2004-05-01), Bader et al.
patent: 2005/0126802 (2005-06-01), Ludwig et al.
patent: 2283213 (2000-03-01), None
patent: 102004011068 (2005-06-01), None

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