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US 2011/0214546 A1Published application
Cutting tools
AssigneeMakita Corporation
InventorsHirotomo INAYOSHI, Syuji AOYAMA
Life of this patent
Estimating the term…
Abstract
A cutting tool includes a tool unit including an electric motor, a fan and a rotary cutting blade. The fan and the rotary cutting blade are rotatably driven by the electric motor. A blower includes a blower duct introducing a flow of air produced by the fan toward a cutting point where a workpiece is cut by the rotary cutting blade.
Claims15
A cutting tool comprising:
- a base for placing on a workpiece;
- a tool unit supported on the base and having an electric motor, a rotary cutting blade rotatably driven by the electric motor, and a blade case covering an upper portion of the rotary cutting blade;
- a fan rotatably driven by the electric motor and producing a flow of a cooling air for cooling the motor;
- and
- a blower capable of blowing off cutting chips or powder from a cutting point by utilizing the cooling air that cools the electric motor,
- wherein the blower includes a blower duct that is configured to guide the cooling air from a lower side of the fan toward a front side in a tangential direction of the fan.
3 more elements
A cutting tool comprising:
- a tool unit including an electric motor, a fan and a rotary cutting blade, the fan and the rotary cutting blade being rotatably driven by the electric motor, and
- a blower including a blower duct introducing a flow of air produced by the fan toward a cutting point where a workpiece is cut by the rotary cutting blade.
Dependencies are inferred from the claim text.