Inflatable back cushion - has inflating bellows with valve and hose for connection to cushion

摘要

The inflatable back-cushion for a seat incorporates an expandible air cushion (1) with inflating bellows (2). Air is stored by a valve (3), while an expandible rubber hose (4) connects the cushion to the bellows. The hose outlet can be on the right-hand side of the seat, while the bellows is roughly round and connected to the hose end, and can have a controller for air inflow and discharge. ADVANTAGE - Fits comfortably against user's back with no points of excessive pressure.