| 摘要 |
<p>Device for discharging pourable material from a closed space by means of gas of over-atmospheric pressure which has a material tank, a gas holder, a mantle encasing at least partly the material tank, a piercing needle connected to the mantle and serving for opening the material tank and an actuating mechanism for opening and closing the discharge orifice being in connection with the orifice of the material tank. The essence of the device consists in that it has a passage connecting the inner space of the gas holder and that of the material tank in operable condition of the device, as well as an end plate closing the passage in inoperable condition. The advantage of the device according to the invention is that by means of this device to be produced and operated simply and inexpensively the task of spraying, and pressing out, respectively various pourable substances is solved without environment contamination and risk of accident.</p> |
