| 摘要 |
An inflatable cushion (A) having a series of separately inflatable zones (n, s, t, u) with tubular conduits (20, 21, 22, 23) leading from each zone (n, s, t, u) beneath or on top of the cushion (A) within the periphery of the cushion to a common manifold (24) spaced outwardly from the front edge of the cushion with a fill tube (25) connected to the manifold (24) and individual cut-off valves (30) or a means to buckle the tubes for each conduit whereby the zones can be filled and bled simultaneously or selectively. |
