APPARATUS FOR DISTRIBUTING PRESSURE FLUID TO SEAT UNIT WITH BACKREST

摘要

An arrangement for the distribution of pressurized fluid to areas of a seat unit having a backrest comprising a first fluid-containing chamber adaptable to the seat area of the seat unit so as to be adapted to receive, at least in part, the user's weight; one or more inflatable chamber adaptable to the seat unit backrest; and lines communicating between the first chamber and each said backrest chamber. Each line has inserted therein a normally closed valve means provided with an opening means with opening controls positioned in the seat unit such as to be accessible to the user. The invention also relates to an embodiment of said valve.