IMPROVED MODULAR SQUATDOWN WHEELED SUSPENSION SYSTEM FOR DELIVERY VEHICLES

摘要

An improved modular squatdown suspension system intended for use with a vehicle body of the cube-shaped delivery van type is provided. The vehicle body (12) includes a substantially horizontal frame (30) supporting a cargo-holding floor that is movable from a ground-contacting load/unload mode wherein the floor (14) is lowered by the squatdown suspension system to be at a subtle angle substantially horizontal to the ground to a raised transport mode. An integral ramp (20) facilitates the loading of a variety of different types of cargo. An improved vehicle body positioning and suspension system unit (32) is associated with each wheel (34) and is actuated to raise or lower the truck frame and floor by the inflation and deflation of an airbag (40) associated with each wheel. Control and safety features are provided to be actuated in the event of an involuntary loss of air from the system.