| 摘要 |
The invention relates to a compact device with multiple functions allowing purges of air and water when submerged and to the use at various inclinations. It is composed of two interlocking elements, consisting of a bell 1 provided with a deflector 2, into which bell is inserted a tube 3 integrating a spiral 4 at its periphery. The present invention is particularly intended for underwater diving. <IMAGE>
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