The Development of a Seat Suspension For Mobile Construction Equipment

A seat suspension has been developed to isolate the operator from high amplitude-low frequency motion characteristics of large, rubber-tired, earthmoving vehicles. The motion of the suspension is unique in that it allows for 7 in. of vertical motion at the operator's “H” point with little or no motion of the lower legs and feet.

In addition to greater operator comfort, this arrangement makes possible better control and safer operation.