Electric power tool

Details Electric power tool Electric power tool

2008-11-04

2011-12-13

Owens, Douglas W (Department: 2821)

Illumination

With implement or hand held holder therefor

Hand tool

C315S033000, C315S362000, C315S363000, C307S126000, C307S140000, C307S410000, C310S050000

Reexamination Certificate

active

08075155

ABSTRACT:
An electric power tool, which comprises a motor that drives a tool, a power source unit that applies voltage to the motor, a main switching circuit that makes/breaks an electrical connection between the power source unit and the motor, an illuminator that illuminates a work spot, a switching device that electrically connects the illuminator to the power source unit, and an OR circuit that is electrically connected to terminals of the motor to the base terminal is provided. The OR circuit electrically connects one of the motor terminals at which a voltage is higher to the base terminal.

REFERENCES:
patent: 3458793 (1969-07-01), Tsergas
patent: 5169225 (1992-12-01), Palm
patent: 6318874 (2001-11-01), Matsunaga
patent: 6511200 (2003-01-01), Matsunaga
patent: 6814461 (2004-11-01), Minalga
patent: 7282818 (2007-10-01), Kovarik
patent: 1 068 934 (2001-01-01), None
patent: A-2001-25982 (2001-01-01), None
patent: A-2003-326477 (2003-11-01), None

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