Patent ID: 6908160
Filing Date: 2005-06-21
Classification: B60T

Abstract:
1. A hydraulic brake apparatus for a vehicle comprising: a pressure source for generating hydraulic pressure; a hydraulic pressure boosting device having a pressure regulating valve for regulating the hydraulic pressure generated by said pressure source in response to braking operation by a vehicle driver; a master cylinder for advancing a master piston by the hydraulic pressure discharged from said hydraulic pressure boosting device to discharge the hydraulic braking pressure from a master chamber; a wheel brake cylinder operatively mounted on each wheel of said vehicle for applying braking force to said wheel with the hydraulic braking pressure discharged from said master cylinder; pressure detecting means for detecting at least one of the hydraulic braking pressure discharged from said master cylinder and the hydraulic pressure discharged from said pressure regulating valve, and pressure supply means for permitting the hydraulic pressure discharged from said pressure regulating valve to be supplied into a hydraulic pressure circuit including said master cylinder and said wheel brake cylinder, when the hydraulic braking pressure discharged from said master cylinder is equal to or greater than a predetermined starting reference pressure set to be equal to or greater than hydraulic pressure corresponding to a predetermined vehicle deceleration, and/or when the hydraulic pressure discharged from said pressure regulating valve is approximately equal to or greater than said starting reference pressure, said pressure supply means being positioned downstream of said pressure regulating valve.