Disposable cargo cushion

Claim 1

A DISPOSABLE CARGO CUSHION COMPRISING A HOLLOW REINFORCING CASING OF SUBSTANTIALLY RIGID CONSTRUCTION AND INCLUDING OPPOSED FACE PANELS INTERCONNECTED BY LATERAL WALLS AND CONSTRUCTED OF STRONG FIBROUS SHEET MATERIAL, THE LATERAL WALLS OF THE CASING BEING CONSTRUCTED TO FOLD ALONG A PLANE SUBSTANTIALLY PARALLEL TO AND BETWEEN THE FACE PANELS FOR LATERAL COLLAPSING AND EXPANDING OF THE CASING, A SEPARATE INFLATABLE BLADDER OF THIN FLEXIBLE MATERIAL CONFINED FREELY IN THE CASING, AT LEAST ONE WALL OF THE CASING BEING CAPABLE OF BEING OPEN INITIALLY FOR INSTALLING THE BLADDER IN THE CASING AND THEREAFTER CLOSED TO CONFINE THE BLADDER IN THE CASING, AIR VALVE MEANS ON THE BLADDER EXTENDING THROUGH AN OPENING IN THE CASING FOR CONNECTION TO A SOURCE OF AIR UNDER PRESSURE FOR INFLATING THE BLADDER AND EXPANDING THE CASING TO FILL A CARGO SPACE TO BE CUSHIONED, THE BLADDER BEING FOLDABLE WITH THE CASING FOR COLLAPSING.