PROBLEM TO BE SOLVED: To provide a cap of a bottle and a cap for a liquid medicine-feeding bottle each, which is capable of being easily controlled by decreasing the kinds of the caps by enabling them to apply to a plurality of bottles each having an opening with a different diameter.SOLUTION: In the cap with a downward opening, which is attached so that the cap is engaged with the opening of the bottle from above to cover the opening including the outer peripheral surface of the opening from the outside, the inner peripheral surface is mounted with a contact part having the lower side which has a diameter smaller than that of the upper side and elastically contacts the outer peripheral surface of the bottle when the cap is fitted to the mouth.COPYRIGHT: (C)2008,JPO&INPIT【課題】 異なる口部の径を有する複数のボトル、あるいは水薬供給ボトルに対応することで種類を少なくして管理を容易に行い得るボトルのキャップおよび水薬供給ボトル用のキャップの提供。【解決手段】 ボトルの口部に上方から嵌合されて口部の外周面を含んで口部を外側から覆うように装着される下側開放のキャップであって、内周面に、下方が上方に比べて小径に形成されて口部に装着した際に小径側がボトルの外周面に弾性的に接触する接触部が設けられている構成。【選択図】 図3
