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Distribuidora Pleuger S A
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Distribuidora Pleuger S A
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Application filed by Distribuidora Pleuger S AfiledCriticalDistribuidora Pleuger S A
Priority to ES0238073ApriorityCriticalpatent/ES238073A3/en
Publication of ES238073A3publicationCriticalpatent/ES238073A3/en
Improved pump for elevating past oils, essentially characterized by comprising a hollow piston sliding on the outer surface of a hollow cylinder, which by means of a piston rod guided centrally in the hollow cylinder, the force of the piston rod being transmitted to the hollow piston in the upper and lower points of reversal of stroke after having made act a trapdoor that acts as a valve, while the hollow piston is introduced helping in its end by a wedge in the liquid to raise that is in position of rest. (Machine-translation by Google Translate, not legally binding)
ES0238073A1957-10-151957-10-15A perfected pump for elevating heavy oils (Machine-translation by Google Translate, not legally binding)
ExpiredES238073A3
(en)