Patent ID: 7699407

Claim:
A working machine, comprising: a spring-loaded brake having a braking position and a release position and controlled by a brake valve producing a brake-release pressure, wherein the brake valve is operatively connected to a service brake input device and is acted upon in a direction of a reduction in the brake-release pressure arising at the spring-loaded brake when the service brake input device is actuated, wherein upon actuation, the service brake input device is operatively connected to a pre-stressed spring device, which is operatively connected to the brake valve and is acted upon in a direction of an increase in the spring force on increasing actuation of the service brake input device, wherein the spring device has a spring clamped between a spring plate and a spring bearing plate and is connected to the spring plate, wherein the spring bearing plate is connected to the spring plate by an adjustment element, and wherein a distance between the spring bearing plate and the service brake input device is adjustable by the adjustment element.