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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tadano Ltd
Original Assignee
Tadano Iron Works Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tadano Iron Works Co LtdfiledCriticalTadano Iron Works Co Ltd
Priority to JP4250775ApriorityCriticalpatent/JPS51118253A/en
Publication of JPS51118253ApublicationCriticalpatent/JPS51118253A/en
PURPOSE: To provide an apparatus for automatically extending one by one a plurality of hydraulic cylinders which are operative to extend multi-step booms of a truck crane.