Rexon Industrial Corporation Ltd.

Yen-Chih Chang

Cheng-Hung Chiu

A combination power tool with a machine base, an independently operable portable circular saw, and a connection device for fastening the portable circular saw to the machine base to form a miter saw. The portable circular saw has a power supply unit including a first power socket that is provided at the front side of the portable circular saw and selectively electrically connectable to the motor of the portable circular saw, a second power socket provided at the rear side of the portable circular saw and selectively electrically connectable to the motor of the portable circular saw, and a power cable for connecting an external power source to one of the first power socket and the second power socket.

Combination power tool

A control device for driving a regulating motor driven by direct current (DC) includes a changeover mechanism having a first normally closed (NC) switch, a second NC switch, a first normally open (NO) switch, and a second NO switch, a power-supply module for providing DC for the regulating motor, a first operating switch for driving the regulating motor to rotate in a first direction while the two NC switches become open circuit and the two NO switches become short-circuit resulting from that the first operating switch is short-circuit, and a second operating switch for driving the regulating motor to rotate in a second direction opposite to the first direction. In light of these, the control device can control the rotational direction of the regulating motor by means of simple circuitry.

Growing community of inventors

Taichung, Taiwan

Yen-Chih Chang