| 摘要 |
<p>The subject of the present invention is a tip vessel element (1) used in connection with liquid transfer devices. The tip vessel (2) in the tip vessel element (1) or the tip vessels (2), which are parallel to each other, e.g., in a row or matrix form, in the tip vessel element (1) are supported by a support and fastening plate (3). The tip vessel or tip vessels (2) and the support and fastening plate (3) are made as one piece preferably out of a plastics material by extrusion. According to the invention on the inside face of the wall (4) of each tip vessel of the tip vessel element (1) there is,facing towards the interior of the tip vessel (2), at least one such annular projection, flange or bulging (5), projecting from the said wall face and made of one piece with the tip vessel element (1), as, when the tip vessel element (1) is attached to the liquid transfer device, forms a sealing point around the piston (6) jointly operative with the tip vessel (2) concerned. At least a space required by the stroke length of the piston remains in each tip vessel (2) underneath the sealing point.</p> |
