| 摘要 |
<p>A spray head for a spray can, comprising a hollow stem having a bore which is adapted to be brought into communication with the liquid space of the spray can, and which on the other hand, terminates near a spray nozzle having an exit aperture, so as to force liquid driven into said bore by the outward pressure of the spray can through said aperture for being sprayed; according to the invention, in the flow path (3, 4, 6) of the liquid, a passage operating as a jet pump (7) driven by the liquid flow pressed outwards is included, the suction side (10) of which communicates with the ambient air.</p> |
