In the operating device according to the present invention, the relief valve may be configured to generate desired damper torque by setting the relief valve such that {TAIL ~ the relief valve} has {HEAD ~ a desired override} characteristic 
In the operating device according to the present invention , the relief valve may be configured to generate desired damper torque by setting the relief valve such that { TAIL ~ the relief valve } has { HEAD ~ a desired override } characteristic
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH