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Priority to JP8967488UpriorityCriticalpatent/JPH0210819U/ja
Publication of JPH0210819UpublicationCriticalpatent/JPH0210819U/ja
【実用新案登録請求の範囲】
素材として、アルミニユーム合金の特性を生か した加工用の軽合金を使用する。
表面の凹凸により頭部の熱を拡散して冷やし冷 気を取り入れる効果。[Claims for Utility Model Registration] As the material, a light alloy for processing that takes advantage of the characteristics of aluminum alloy is used. The unevenness of the surface diffuses the heat from the head and brings in cold air.