| 摘要 |
<p>The spray ejects liquid from a receptacle using a push button tap (16). It uses gas inside the receptacle in a cylinder with which the nozzle communicates. This thrusts liquid from the cylinder. The gas pressure is below 3 bar. A tubular piston slides in the cylinder and a side hole communicates with the receptacle. This hole can be closed by the piston and a seating is applied to the piston mouth by a spring and a stop limits its movement. The spring is in a sealed chamber.</p> |
