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Priority to ES0252107ApriorityCriticalpatent/ES252107A3/en
Publication of ES252107A3publicationCriticalpatent/ES252107A3/en
Improvements in the control valves for servo drives, characterized in that the distribution of the fluid under pressure acting on the servo control is carried out by means of valve elements constituted by rings mounted on a longitudinal element and an enclosing cylinder both displaceable relative to each other, so that by longitudinal displacement of one or the other said valve elements are opened or closed, putting in proper communication with each other the conduits connected to the servo control, the discharge conduits and the supply conduit of the fluid under pressure. (Machine-translation by Google Translate, not legally binding)
ES0252107A1959-08-311959-08-31Improvements in servo control valves (Machine-translation by Google Translate, not legally binding)
ExpiredES252107A3
(en)