Patent ID: 7077227

Claim:
A controlled suspension system for use between a vehicle cab and an associated vehicle frame comprising: (a) a strut module adapted to be attached at one end to said cab and at an opposite end to said associated vehicle frame, said strut module 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 module; (b) said strut module including a height sensor for measuring a distance between said-cab and said associated frame and generating a signal indicative thereof; and (c) a controller for receiving said signal from said height sensor and selectively pressurizing said air sleeve; (d) whereby said distance between said cab and said associated frame is maintained within desired limits by selective pressurization of said air sleeve.