| 摘要 |
PROBLEM TO BE SOLVED: To simplify the bottom support structure of an inside container 2 to reduce a production cost, in a double container in which the cylindrical bottomed inside container 2 is concentrically inserted and arranged in a cylindrical bottomed outer container 1 with a specified clearance interposed between them. SOLUTION: In the double container, an annular recessed groove 6 is formed on the bottom face outer peripheral edge of the inside container 2, into which a support ring 7 made of either metal or a synthetic resin is fitted outwardly protruded, and the ring 7 is made to be abutted on the recessed arc-shaped inner bottom face 3a of the outer container 1, allowing a stable supporting of the bottom side end of the inner side container 2. COPYRIGHT: (C)2005,JPO&NCIPI
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