Power tool and overload protection

Details Power tool and overload protection Power tool and overload protection

2006-07-03

2010-06-08

Ro, Bentsu (Department: 2837)

Tool driving or impacting

Automatic control of power operated means

Drive means responsive to torque or speed condition

C173S182000, C173S179000, C173S216000, C173S217000

Reexamination Certificate

active

07730964

ABSTRACT:
The invention relates to a power tool having a change-speed gear device comprising a plurality of gears (1, 2) for adjusting on demand power stages of a drive, wherein an overload protection can be coupled to the gears (1, 2). According to the invention, the device comprises at least one gear (3) in which the overload protection function can be forcibly deactivated. The invention also relates to an overload protection.

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patent: 2004/0026728 (2004-02-01), Yoshida et al.
patent: 2004/0224621 (2004-11-01), Fraser et al.
patent: 2006/0124331 (2006-06-01), Stirm et al.
patent: 196 29 623 (1998-01-01), None
patent: 20 2004 004 749 (2005-10-01), None
patent: 2 315 438 (1998-02-01), None

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