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Priority to JP1984145373UpriorityCriticalpatent/JPS6160970U/ja
Publication of JPS6160970UpublicationCriticalpatent/JPS6160970U/ja
【実用新案登録請求の範囲】
(イ) ゴルフクラブのシヤフト及びヘツドの中に 溝とホールを作る。
(ロ) シヤフトの溝からヘツドに向つて比重のあ る液体（例えば水銀）及び、固体（例えばボール ベアリング）がスイングによつてスムーズに移動 しバランスを変化させる。[Scope of claims for utility model registration] (a) Creating grooves and holes in the shaft and head of a golf club. (b) Liquids with specific gravity (e.g. mercury) and solids (e.g. ball bearings) move smoothly from the shaft groove toward the head due to the swing, changing the balance.