| 摘要 |
A spreader assembly for the controlled delivery to a surface of granular materials such as aggregates from a hopper in communication with a source of the materials external to said assembly; wherein the assembly comprises; an opening to said hopper which receives said materials from said materials source, a discharge opening from the hopper; a gate or gates adjacent said discharge opening; control means for adjusting the rate and or quantity (weight or volume) of said materials delivered from said hopper; wherein the control means includes means to receive at least one input parameter and mea ns to convert said at least one input parameter into an output parameter for performing at least one mechanical activity in the assembly; wherein the rat e or quantity at which said material is delivered is dependent upon the at lea st one input parameter and said mechanical activity.
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