Hand-held power tool with a torque-limiting unit

Details Hand-held power tool with a torque-limiting unit Hand-held power tool with a torque-limiting unit

2005-12-01

2008-11-25

Bonck, Rodney H (Department: 3681)

Tool driving or impacting

Automatic control of power operated means

Drive means responsive to torque or speed condition

C173S176000, C192S056610, C464S038000

Reexamination Certificate

active

07455123

ABSTRACT:
A hand-held power tool has a motor output shaft, a tool driver, and a torque-limiting unit with which a maximum torque transferred from the motor output shaft to the tool driver is adjustable by an operator, the torque-limiting unit including a spring system, the spring system including differently-acting spring elements.

REFERENCES:
patent: 3942337 (1976-03-01), Leonard et al.
patent: 6502648 (2003-01-01), Milbourne
patent: 6739225 (2004-05-01), Bader et al.
patent: 6832533 (2004-12-01), Huang
patent: 7360607 (2008-04-01), Aeberhard
patent: 103 09 057 (2004-09-01), None

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