Patent ID: 8684472

Claim:
Hydraulic braking system ( 1 ) for a vehicle comprising a front axle and a rear axle, said hydraulic braking system ( 1 ) comprising: a first ( 2 ) and a second ( 3 ) pressure supply means, braking means comprising: a first rear axle braking means( 4 ), a second rear axle braking means( 5 ), a front axle braking means( 6 ), said hydraulic braking system ( 1 ) being characterised in that the hydraulic braking system ( 1 ) comprises a rear inlet distributor ( 12 ), a front inlet distributor ( 13 ), a first brake distributor ( 10 ) and a second brake distributor ( 11 ), defining a standby configuration, in which there is no supply to any of the braking means; a first braking configuration, in which the first supply means applies pressure to the first rear axle braking means( 4 ); a second braking configuration in which the first supply means applies pressure to the second rear axle braking means ( 5 ); a third braking configuration in which the first supply means applies pressure to the first and second rear axle braking means ( 4 , 5 ), and the second supply means applies pressure to the front axle braking means ( 6 ), the pressure in the front axle braking means ( 6 ) being applied by the second pressure supply means ( 3 ) through the front inlet distributor ( 13 ), the first brake distributor ( 10 ) and the second brake distributor ( 11 ), characterised in that said front inlet distributor ( 13 ) is slaved in displacement relative to the displacement of the rear inlet distributor ( 12 ) through mechanical ( 14 ) and hydraulic ( 15 ) connection means, and in that said hydraulic means ( 15 ) includes a slaving line supplied with pressure through a conduit ( 16 ) connected to the rear supply distributor ( 12 ), and said mechanical connection means ( 14 ) comprises a thrust rod adapted so that the mechanical connection means ( 14 ) only moves the front inlet distributor ( 13 ) if the hydraulic connection means ( 15 ) is defective.