Rucksack with bag stiffened by inflatable cushion - has several converging pads preferably in triangular form

摘要

The rucksack is for campers, climbers or walkers and has a large supple bag (1) with straps which pass round the shoulders. On its back face (1), there is at least one inflatable cushion (3) which provides resilient stiffness for the rucksack. The cushion is fixed to the bag by sewing, bonding or soldering or it can be removable. The cushion is preferably triangular and has three longitudinal converging pads (31, 32, 33) and a transversal pad (34) which forms the base of the triangle. This is parallel to the bottom of the bag. The cushion can be a single chamber or it can be subdivided into several chambers, inflated separately.