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US 2008/0305728 A1Published application
Power tools
AssigneeMakita Corporation
InventorsEiji Kobayashi, Yasutaka Yamada, Hitoshi Sengiku, Akira Tomonaga, Hironori Ogura, Akira Hachisuka
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Abstract
A power tool includes an air introduction device that can introduce an external air into the casing and can produce a spiral flow of the air within the casing. A motor is disposed within the casing.
Claims15
A power tool comprising:
- a casing;
- a motor disposed within the casing;
- a first air introduction opening and a second air introduction opening formed in the casing on a first side and a second side opposite to the first side, respectively;
- and
- a first air introduction member and a second air introduction member extending inwardly from an inner wall of the casing at positions proximal to the first air introduction opening and the second air introduction opening, respectively;
- wherein the first air introduction member is configured such that an external air flowing into inside of the casing via the first air introduction opening is directed in a first direction within the casing;
- wherein the second air introduction member is configured such that an external air flowing into inside of the casing via the second air introduction opening is directed in a second direction within the casing, and
- wherein the first direction and the second direction are opposite to each other.
5 more elements
A power tool comprising:
- a casing;
- a motor disposed within the casing;
- an air introduction device arranged and constructed to introduce an external air into the casing and to produce a spiral flow of the air within the casing.
A power tool comprising:
- a casing defining a first opening and defining a second opening, wherein the first opening is approximately opposite the second opening;
- a motor disposed within the casing;
- a first air introduction member positioned inside the casing proximate the first opening, wherein the first air introduction member is constructed to direct external air into the casing in a first direction;
- a second air introduction member positioned inside the casing proximate the second opening, wherein the second air introduction member is constructed to direct external air into the casing in a second direction,
- wherein the first direction and the second direction are opposite to each other.
2 more elements
Dependencies are inferred from the claim text.