| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cap of a PET bottle easy to open for persons with less strength by forming semispherical projections on the cap. <P>SOLUTION: The semispherical projections (2) are formed on a PET bottle cap (1) so as to increase rotating force by action of a lever so that the person with less strength easily open the PET bottle cap. <P>COPYRIGHT: (C)2012,JPO&INPIT |
