Abstract: Cut-in-cut-out valves for hydraulic circuits. The hydraulic circuits include a hydraulic pump outputting a variable pressure controlled by a slaving line, an accumulation circuit, a return line to the reservoir, a cut in-cut-out valve. The hydraulic circuits also include a cut-in-cut-out valve having four orifices, a first orifice connected to the supply line, a second orifice connected to the slaving line, a third orifice connected to the return line leading to the reservoir, and a fourth orifice connected to the accumulation circuit. The cut-in-cut-out valve alternates between two positions as a function of the pressure in the accumulation circuit, a cut-in position in which the first, second and fourth orifices are connected to each other, and a cut-out position in which the first and fourth orifices are closed.

Abstract: This invention discloses a hydraulic braking system (1) for a vehicle comprising: two pressure supply means (2, 3), two rear braking means (4, 5) and one front braking means (6), said hydraulic system (1) being characterised in that it 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, three braking configurations pressurising: a first rear brake, a second rear brake, the two rear brakes and the front brake respectively, pressure for the front axle braking means (6) being applied through the front inlet distributor (13), the first brake distributor (10) and the second brake distributor (11).

Abstract: This invention relates to a hydraulic circuit comprising: a hydraulic pump (12) outputting a variable pressure controlled by a slaving line (18), an accumulation circuit (32), a return line to the reservoir (40), a cut-in-cut-out valve (80), said hydraulic circuit being characterised in that the cut-in-cut-out valve comprises four orifices: a first orifice (81) connected to the supply line, a second orifice (82) connected to the slaving line, a third orifice (83) connected to the return line leading to the reservoir, a fourth orifice (84) connected to the accumulation circuit, said cut-in-cut-out valve alternating between two positions as a function of the pressure in the accumulation circuit: a cut-in position in which the first, second and fourth orifices are connected to each other, a cut-out position in which the first and fourth orifices are closed.

Abstract: This invention discloses a hydraulic braking system (1) for a vehicle comprising: two pressure supply means (2, 3), two rear braking means (4, 5) and one front braking means (6), said hydraulic system (1) being characterised in that it 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, three braking configurations pressurising: a first rear brake, a second rear brake, the two rear brakes and the front brake respectively, pressure for the front axle braking means (6) being applied through the front inlet distributor (13), the first brake distributor (10) and the second brake distributor (11).