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Priority to ES0074264UpriorityCriticalpatent/ES74264Y/en
Publication of ES74264UpublicationCriticalpatent/ES74264U/en
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Publication of ES74264YpublicationCriticalpatent/ES74264Y/en
An improved oil maker, characterized in that inside the cylinder of the injection pump can slide a unitary set of a single piece of piston rod, which receives the antagonistic action of a spring supported on a lower perforated cage, containing a spring and the inlet ball valve, the oil can pass through said cage towards the interior of the cylinder, and towards the outlet, passing through a conical seat valve with opposing spring attached to the shank. (Machine-translation by Google Translate, not legally binding)
ES0074264U1959-06-021959-06-02
Perfected Oil Can
ExpiredES74264Y
(en)