Power output mechanism for power tools

Details Power output mechanism for power tools Power output mechanism for power tools

2008-05-08

2010-11-30

Ridley, Richard W (Department: 3656)

Tool driving or impacting

Drive adjustable to completely change kind of drive

Adjustable to impacting device

C173S216000, C081S463000

Reexamination Certificate

active

07841424

ABSTRACT:
A power output mechanism for power tools includes a main part for driving an output shaft, a switch unit, an impact unit, a pressing unit, and an operation member. The switch unit has a rotation collar for controlling positions of positioning springs. The impact unit includes an orientation wheel movably connected to the output shaft and an operation wheel secured to the output shaft. The orientation wheel includes a first toothed contact surface which is removably engaged with a second toothed contact surface of the operation wheel. A corrugated ring portion is defined on an outer periphery of the orientation wheel and limited from rotation relative to the output shaft when the positioning springs are moved to certain positions. When the positioning springs are engaged with the orientation wheel, the orientation wheel cannot freely rotate relative to the output shaft so that an impact is output.

REFERENCES:
patent: 5451127 (1995-09-01), Chung et al.
patent: 6045303 (2000-04-01), Chung et al.
patent: 6142242 (2000-11-01), Okumura et al.
patent: 6152242 (2000-11-01), Chung et al.
patent: 6202759 (2001-03-01), Chen et al.
patent: 2005/0034882 (2005-02-01), Chen
patent: 2009/0126958 (2009-05-01), Trautner et al.

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