Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Hitachi Ltd
Original Assignee
Hitachi Ltd
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Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP7314176ApriorityCriticalpatent/JPS52156406A/en
Publication of JPS52156406ApublicationCriticalpatent/JPS52156406A/en
PURPOSE: To perform air supply to a press. tank on the basis of the starting and stopping of a pump without separately setting an air compressor, by possessing the press. tank and a plural number of pumps.