Power tool

Details Power tool Power tool

2008-09-19

2011-11-29

Benson, Walter (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

With nonautomatic control means

C318S244000, C318S254100, C318S461000

Reexamination Certificate

active

08067913

ABSTRACT:
The controller determines the presence or absence of operation of the trigger switch according to an ON/OFF state of the main contact of the trigger switch and designating the rotation speed of the motor based on a signal outputted from the speed contact. The controller stops the rotation of the motor, after the trigger switch is activated and the main contact is turned ON and the motor is driven according to a signal outputted from the speed contact, when an OFF state of the main contact is detected, only in the case where a signal value outputted from the speed contact is a predetermined value or less.

REFERENCES:
patent: 5731673 (1998-03-01), Gilmore
patent: 6392373 (2002-05-01), Glasgow et al.
patent: 7112934 (2006-09-01), Gilmore
patent: 7282880 (2007-10-01), Glasgow et al.
patent: 7646157 (2010-01-01), Cruise et al.
patent: 7759898 (2010-07-01), Brotto
patent: 7821217 (2010-10-01), Abolhassani et al.
patent: 2007/0069672 (2007-03-01), Glasgow et al.
patent: 2000-024960 (2000-01-01), None
patent: 200024960 (2000-01-01), None
patent: 2007-196363 (2007-08-01), None
patent: 2007196363 (2007-08-01), None
Chinese Office Action, with English translation, issued in Chinese Patent Application No. 200810161805.9, mailed Feb. 12, 2010.

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