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 JP4776476ApriorityCriticalpatent/JPS52131354A/en
Publication of JPS52131354ApublicationCriticalpatent/JPS52131354A/en
Publication of JPS5637160B2publicationCriticalpatent/JPS5637160B2/ja
PURPOSE: To enable placing and mounting of a hoist onto I beam provided at high place by the drive of a self-driving unit by providing an auxiliary drum driven by a motor of the hoist at frame for containing a main drum.