Patent ID: 7612303

Claim:
An axle load scale for vehicles having spring suspensions comprising an axle transmitter assembly further comprising a pneumatic variable pressure valve having a self-returning rotatable activator, an inlet supply port, an outlet port, and an exhaust port wherein a pneumatic pressure is presented at the output port in direct proportion to the rotational position of the rotatable activator when a pneumatic supply is presented to the inlet supply port with the rotatable activator operable to provide 0 PSI in a rest position and a proportionally increasing pressure corresponding to an increasing degree of rotation; and, an actuator lever arm having distal and proximate ends with the proximate end fixed to the rotatable activator; and, an operator display gauge in direct pneumatic communication with the output port of the variable pressure valve being a pressure gauge having scale markings associated with the axle load; with said axle transmitter assembly being mounted to a vehicle frame such that the distal end of the actuator lever arm rests on the vehicle axle such that the rotatable activator position gauges the vertical displacement of the axle relative to the frame as the axle spring suspension compresses from the assumption of a cargo thereby resulting in a pneumatic pressure presented to the operator display gauge in proportion to the axle load.