Image Number 14 for United States Patent #6976696.
An undercarriage for transporting a stretcher includes a support base, which is adapted for supporting a stretcher, a first pair of legs pivotally mounted to the support base, and a second pair of legs pivotally and slidably mounted to the support base. The first pair of legs is independently pivotal about the support base from the second pair of legs. In addition, a journaled member is provided at the distal ends of each leg. The undercarriage also includes a control system that is adapted to selectively pivot the first pair of legs to a stowed position and to selectively pivot the second pair of legs to a stowed position. The control system is further adapted to selectively lengthen or shorten the legs to adjust the height of the support base.