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 Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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Filing date
Publication date
Application filed by Hitachi Construction Machinery Co LtdfiledCriticalHitachi Construction Machinery Co Ltd
Priority to JP9168777ApriorityCriticalpatent/JPS5427153A/en
Publication of JPS5427153ApublicationCriticalpatent/JPS5427153A/en
PURPOSE: To provide a hydraulic circuit, in which pressure oil from hydraulic pumps is passed through directional control valves and a counterbalance valve to drive the winding drum, whereby it is enabled to eliminate operation of lever for a winding drum used for supporting the bucket.
COPYRIGHT: (C)1979,JPO&Japio
JP9168777A1977-07-291977-07-29Hoisting apparatus for crane or the like
PendingJPS5427153A
(en)