| 摘要 |
PROBLEM TO BE SOLVED: To provide the structure of a new ceramic cup with excellent cushioning property, stability and design by extremely simple constitution and processes. SOLUTION: A circular bottom peripheral surface part 15 is formed through a step part 16 lower than the outer peripheral surface of a cup main body at an outer peripheral part near the bottom part 12 of a ceramic cup main body 11. Ring packing 20 composed of an elastic body provided with the inner peripheral surface of a diameter smaller than the diameter of the circular bottom peripheral surface part and a thickness projecting from the bottom part of the cup main body is press-fitted to the circular bottom peripheral surface part.
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