Patent ID: 7861741
Filing Date: 2011-01-04
Classification: E02F,F15B,F16K,G05D,Y10T

Abstract:
1. A hydraulic flow control valve, comprising: a spool; and a flow rate setting adjustment device comprising a rotary control, a spool stop, and a flow rate setting indicator, the flow rate setting adjustment device configured to adjust a flow rate setting of the hydraulic flow control valve by adjusting the amount of travel allowed for the spool in response to axial position adjustment of the spool stop caused by screw-type movement of the rotary control, the flow rate setting indicator arranged for screw-type movement with the rotary control to indicate the flow rate setting upon the axial position adjustment of the spool stop caused by the screw-type movement of the rotary control, the flow rate setting indicator including a yieldable detent and screw-type movement stops formed on the rotary control and spaced helically apart from one another for contact with the yieldable detent to stop screw-type movement of the rotary control, each screw-type movement stop corresponding to a predetermined flow rate setting for the hydraulic flow control valve.