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Hitachi Ltd
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Hitachi Ltd
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Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP12675475ApriorityCriticalpatent/JPS5250483A/en
Publication of JPS5250483ApublicationCriticalpatent/JPS5250483A/en
PURPOSE: The prevention against the accident to be produced when the synchronous control of the servovalve has been disarranged by providing the check valves to open at the time grown upward of the settled pressure in the pistons.