Dual braking correction device

Claim 1

A correction device for a vehicle braking system comprising: a housing in which are disposed two correcting valves having inlet and outlet ports adapted to be separately connected to two independent sets of vehicle brake actuators respectively, each of said two correcting valves including a control piston slidably mounted in a bore, each of said control pistons being adapted to control communication between its corresponding inlet and outlet ports; resilient means having a tension variable as a function of the load applied on the vehicle wheel axle associated with the vehicle; force distributing means being provided for respectively transmitting to each of said control pistons, part of the force generated by said resilient means in the direction of opening of said two correcting valves, said force distributing means having a rigid shell with a cylindrical cavity located therein; linkage means connected to said resilient means for transmitting an input force from the resilient means to said force distributing means; a block of elastomeric material located within said cavity; and a projection extending from each of said control pistons into said cavity and contacting said block, the area of the block face adjacent each of the projections being substantially equal to the sum of the areas of the contacting faces of said ends to hold said block within a deformable enclosure of constant volume and thereby transmit equal operational forces to said control pistons.