| 摘要 |
PURPOSE: To make a filled vessel being able to receive deforming force without hindrance when dropped by having structure that a rolling ring has the cross-sectional shape of the trapezoid, that its narrowest point is located at the bottom of a groove and increases the wall thickness toward the edge region, and that its axial end face ends in the plane of the bottom head of the vessel. CONSTITUTION: A support/transport ring 11 is integrally connected with a surrounding wall 4 of the vessel through a connection ring 15 connected to a horizontal contact face 13. The bottom of a groove between the connection ring 15 and surrounding wall portion 12 is disposed at a lower side of the horizontal face 13 with a separation. Also, the rolling ring 1 in the range of vessel bottom has the cross-sectional shape of trapezoid, its narrowest point is located at the bottom of the groove 2, forming a sort of hinges that can bend inward when a deforming force is produced sidewise, and wall thickness increases from the narrowest point toward the thick edge region. The axial end face 5 nearly ends at the plane of the bottom head 7 of the vessel, and the bottom head has shifted to the cylindrical surrounding wall 4 of the vessel through a conical wall portion 6. Therefore, the rolling ring deformed absorbs bouncing energy produced in the dropped vessel.
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