| 摘要 |
A spray means for a spray can or bottle, the latter being adapted for containing a liquid to be sprayed, a pressurised gas being present in the space above said liquid, a dip tube (5) extending into said liquid and being connected, via a dispending valve, with an external spray nozzle (10), a mixing chamber (11') being included between said valve and said dip tube (5), said chamber (11') communicating with said gas space via a communication having a cross-section adapted to the desired gas/liquid ratio, said can or bottle being provided with a one-way valve for filling said space with compressed air, said communication being provided with valve means closed under an elastic force and opening towards the interior of said mixing chamber when the air pressure in said space is sufficient for obtaining the desired mixing effect. In particular said valve means comprises a sealing disc (8'') forming said dispensing valve and closing said communication at the required elastic force when opening said dispensing valve, and said disc (8'') can form, at the same time, the one-way filling valve in the inoperative position of said dispensing valve. |
