Patent ID: 7077226

Claim:
A controlled suspension system for use between a truck cab and an associated truck frame comprising: (a) a strut adapted to be attached at one end to said cab and at an opposite end to said frame, said strut including an air sleeve capable of being selectively pressurized, an inner tube, an outer tube concentric with said inner tube, and a bearing sleeve positioned between said inner tube and said outer tube, whereby said bearing sleeve distributes a bending moment applied to the ends of said strut; (b) a height sensor adapted to be attached to said cab and said frame for measuring a distance therebetween and generating a signal indicative thereof; and (c) a controller for receiving said signal from said height sensor and selectively pressurizing said strut; (d) whereby said distance between said cab and said frame is maintained within desired limits by selective pressurization of said strut.