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Individual
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Individual
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Priority to ES0235075ApriorityCriticalpatent/ES235075A3/en
Publication of ES235075A3publicationCriticalpatent/ES235075A3/en
New vacuum pump with automatic closing characterized by forming three bodies of decreasing diameters, connected in a sealed manner, of which the lower one extends to the bottom of the tank of the liquid to be extracted and presents laterally a liquid outlet nozzle, to the that a rubber tube is attached to another nozzle that passes through the tank lid, and the aspiration piston, whose axis coincides with that of the vacuum intake, is housed inside the two upper bodies. The pump assembly is attached to the threaded cap of the tank. (Machine-translation by Google Translate, not legally binding)
ES0235075A1957-04-251957-04-25New depression pump with automatic closure (Machine-translation by Google Translate, not legally binding)
ExpiredES235075A3
(en)
Flasks or containers with a second hole covered with a membrane that acts as a pump for the exit of the liquid. (Machine-translation by Google Translate, not legally binding)