| 摘要 |
<p>The spray head is used for distributing hair lacquer and similar liquids. It comprises the head (1) which is initially screwed down (37) onto the liquid container, this pushing upwards a flange (20) in the head and compressing a coil spring (35). The liquid, or mixture, is sucked (24) past a ball valve (25) and into a chamber (19) by the vacuum resulting from the displacement of a piston (31) inside the chamber. The head is unscrewed from the container and the contents expelled, by the spring pressure, through a nozzle (10) when the button (9) is pressed. The head is recharged by rescrewing it onto the container.</p> |
