Measurement of wheel and/or axle load of road vehicles

Details Measurement of wheel and/or axle load of road vehicles Measurement of wheel and/or axle load of road vehicles

2009-02-27

2011-12-20

Gibson, Randy W (Department: 2841)

Weighing scales

Structural installation

C177S133000, C177S134000, C177S211000

Reexamination Certificate

active

08080742

ABSTRACT:
The present invention provides an improved weigh-in-motion scale. A slight increase in the thickness of a an upper, flexibly-deformable metal plate in a thin, flexibly-deformable plate system coupled with a change in the transverse locations of the load cells provides the improved weigh-in-motion scale, which is capable of weighing substantially heavier loads than previously known weigh-in-motion scales. In use, as weight is applied to the weigh-in-motion scale, the upper flexibly-deformable metal plate elastically bends. The strain gauges thus provide a changing resistive value proportional to the bending of the flexible element and the weight applied, to generate signals to the Wheatstone bridge circuit, which then provides output signals from the Wheatstone bridge circuit, which are proportional to the force applied to the upper flexibly-deformable metal plate.

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