Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yutaka Toji0
Hidekazu Oka0
Date of Patent
November 7, 2006
0Patent Application Number
108219500
Date Filed
April 12, 2004
0Patent Primary Examiner
Patent abstract
An option valve for controlling the operation of an option actuator added as an option is installed into each of first and second main valve blocks in each of which plural control valves, a pressure oil supply line connected to a pump and a tank line connected to a tank are incorporated, and plural types of connection blocks incorporating circuit elements to be added to the option valve are attached to the main valve blocks selectively to constitute a hydraulic valve device. According to this hydraulic valve device, it is possible to widely cope with various option attachments despite a built-in system with the option valve incorporated beforehand in the main valve blocks.
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