Inflatable cushion assembly for seats

An air-pressure applying assembly (10) for a seat (12), having an occupant holding portion (30), for selectively applying a desired pressure to the body of a seat occupant. This assembly includes an air-bag assembly (16), an air-pressure source (18), an inlet-conduit assembly (20), an exhaust valve assembly (22), and a control assembly (24). The air-bag assembly (16) is removably mountable to the seat occupant holding portion (30). The inlet-conduit assembly (20) is in fluid communication at one end to the air-pressure source (18) and at another to the air-bag assembly (16). The exhaust valve assembly (22) is in fluid communication at one end to the inlet conduit assembly (20) and has an air-outlet at the other end. A control assembly (24) is linked to the air pressure source (18) and to the exhaust valve assembly (22). The control assembly (24) is so configured as to selectively signal the air-pressure source (18) to inflate the air bag assembly (16) so as to apply the desired pressure to the body of the seat occupant and as to selectively signal the exhaust valve assembly (22) to release air from the air bag assembly (16).