Abstract: A power tool includes a motor, a gear mechanism that changes the speed of an output of the motor, a drive circuit including a switching element that controls power supplied to the motor, a housing that accommodates the motor, a fixture that fixes the motor to the housing, and a temperature sensor that measures a temperature of the switching element. The drive circuit stops supplying power to the motor when the temperature measured by the temperature sensor reaches a predetermined temperature. The fixture functions to radiate heat from the switching element.

Abstract: An auxiliary handle includes a base portion having a tubular shape, a connection portion accommodated within an internal space of the base portion in a state in which the connection portion is movable in an axial direction of the base portion, and a band portion curved along an outer circumferential surface of the body case. The band portion includes opposite end portions connected to each other through the connection portion within the internal space of the base portion. The auxiliary handle further includes an adjusting mechanism configured to, by moving the connection portion in the axial direction, change a position of the opposite end portions of the band portion and adjust a length of a part of the band portion exposed from the base portion. The base portion includes a rib for defining a limit of movement of the band portion toward the other axial end portion.

Abstract: A power tool includes a motor, a gear mechanism that changes the speed of an output of the motor, a drive circuit including a switching element that controls power supplied to the motor, a housing that accommodates the motor, a fixture that fixes the motor to the housing, and a temperature sensor that measures a temperature of the switching element. The drive circuit stops supplying power to the motor when the temperature measured by the temperature sensor reaches a predetermined temperature. The fixture functions to radiate heat from the switching element.

Abstract: A saw tool comprises a housing for incorporating a driving device therein, a base attached to the housing, a driving arm connected to the driving device to effect a reciprocating orbital motion, and a saw blade attached to the driving arm and extending through a slit in the base. The saw blade has a first saw tooth section formed on a top end thereof for biting a workpiece and a second saw tooth section formed on one side thereof. A rectangular through-hole can be accurately and rapidly formed in a workpiece such as a plaster board or veneer board, etc., with this saw tool.

Abstract: A saw blade preventing "fluff" or "return" of fibers from occurring when used to cut wood or the like object and rendering any finishing work unnecessary is formed with a unique combination of cutting teeth and biting teeth, the biting teeth being disposed, on a cut path mainly by means of the cutting teeth, either on top surface of or in front of each cutting tooth in cutting direction of the saw blade and to have a smaller width than the cutting teeth, for realizing a biting operation by the biting teeth and the cutting operation by the cutting teeth in the same sawing step.