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Priority to ES0003745UpriorityCriticalpatent/ES3745Y/en
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Publication of ES3745YpublicationCriticalpatent/ES3745Y/en
Valves for rubber balloons, characterized by being composed of a roughly cylindrical or frustoconical piece of rubber (1) with a flat base (3) for its attachment to the balloon (2) and a cylindrical plug (4) made of wood or other material suitable, provided on its outer end with a protruding edge (5), whose cap is inserted inside the rubber part (1) of the valve, until the protruding edge (5) comes in contact with the rubber part (1), thus leaving the passage hermetically closed by the pressure that said elastic piece (1) exerts on the cap (4). (Machine-translation by Google Translate, not legally binding)