#$%^&*AU2016201486B220171214.pdf#####ABSTRACT A towed vehicle hitch tongue includes movably connected front and rear tongue members, and a fully exposed master cylinder connected at opposite ends thereof to the tongue members such that a rearward force urging the front tongue member toward the rear tongue member forces pressurized braking fluid out of a port thereof into a braking circuit configured to exert a braking force. The braking circuit prevents braking until the rearward force warrants braking, provides dampening of the brake action, allows the towed vehicle to reverse, and can provide emergency stopping and dampening of movement of the hitch tongue. Instead of using movable front and rear tongue members, sensors can detect what the towed vehicle is doing, and apply appropriate braking force in response.2/7 35 43 13 1541 43B 45B FIG. 4 TF 4 43 45B35 51 17 25 --23B 19 31 0 23A 23 29 272 FIG. 5 2 RF T 19 0 3 29 2 FIG. 63/7 15 13 10 51 93 17 55 9 57 53 FIG. 7
