Patent ID: 6923209
Filing Date: 2005-08-02
Classification: F15B,G05D,Y10T

Abstract:
1. A liquid pressure control system comprising a spool control valve mounted between a liquid pressure source and an actuator so that an output liquid pressure from the liquid pressure source can be controlled in accordance with a thrust exhibited by a linear solenoid, wherein the control valve has a first spool housed in a valve housing and the linear solenoid is mounted to the valve housing such that the linear solenoid and the first spool are provided coaxially with each other and the thrust of the linear solenoid is applicable to one axial end of the first spool, wherein a manually operated valve is disposed in said valve housing of the control valve to have an operational axis parallel to an axis of the linear solenoid and an axis of the first spool, the manually operated valve being capable of blocking communication between the actuator and the control valve and bringing the liquid pressure source into communication with the actuator to bypass the control valve in response to a manual operation.