Patent ID: 7178884

Claim:
An agricultural vehicle having ancillary equipment that may be raised and lowered relative to the ground with consequential changing of the position of the centre of gravity of the vehicle and having a hydraulic braking system comprising a master cylinder and a slave cylinder, wherein in that the braking system further includes a pressure relief valve for limiting the hydraulic pressure applied to the slave cylinder when the position of the centre of gravity of the vehicle is changed, thereby ensuring that the braking force does not exceed a safe limit below which the vehicle does not risk toppling forwards when braking, having two hydraulic braking systems with separate brake pedals each acting on a respective side of the vehicle so as to enable the vehicle to be steered by the application of a braking force to only one side of the vehicle and wherein the master cylinders of the two braking systems additionally comprise pressure equalization ports that are connected to one another, each port including a non-return valve that is opened as soon as the associated brake pedal is depressed, so that equal pressures are applied to the slave cylinders on the opposite sides of the vehicle when the two brake pedals are depressed simultaneously.