| 摘要 |
The sheet, of stiff spring material, has a fixing portion to the holder, and a display one separated from it by a fold line (5) and which swings into a position extending beyond the vessel (1). The latter is curved at the fold line and to a radius at right angles to the latter. The middle part of the sheet is in contact with the apex of the curve, while the fixing portion (3) is secured to the vessel at a position clear of the line, thus giving two stable positions. The fold line can contain a weakened one, while the vessel incorporates flexible material near the line. The sheet can contain paper or cardboard, and the vessel can be cylindrical, the sheet being glued to it.
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