| 摘要 |
The invention relates to a truncated cone or cylinder-shaped metal vessel with spout and long handle, provided with double bottom filled with sand, intended for coffee making. According to the invention, the vessel consists of a truncated cone or cylinder-shaped metal body (1) and a long grab handle (2), the body (1) being provided with a double bottom, which is either flat or in the shape of a spherical calotte, where the ratio (g/h) between the thickness of the double bottom (g) and the height (h) of the internal truncated cone or cylinder-shaped cavity ranges between 0.18...0.22. |
