The client is a market leader in portable therapy couches. Many of the users of therapy couches are unable to carry the heavier models around with them. The brief was to design a lightweight Therapy Couch that would weigh less than 10Kg, assemble in seconds and support the combined weight of two people. The table top is assembled from two identical halves which hinge. Each half has a hollow space for the storage of the legs, frames and adjustable legs. The basic mechanical principle is of a tension structure and a series of tension wires pass from each corner through a common node. The effect is to increase rigidy with more loading. The prototype was built by Plymouth University composite engineering faculty using preimpregated fabrics and vacuum-bagging. The client did not develop the couch any further because the market did not want to pay the premium for the benefit of less weight.




