FOAM-AIR HYBRID CUSHION AND METHOD OF MAKING SAME

摘要

A composite foam base air cell module cushion (10) having a water resistant skin (13), a contoured foam base (11) designed to relieve pressure on the trochanters and the ischia and an air cell module (12) having two pairs of air cells (41), each partially filled and positioned in a chamber (30) beneath the rear of the base (11). The skin (13) is of two layer constructions with a two-way stretch outer layer (14) and a water impervious inner layer (15). The bottom (29) of the base (11) is covered with a water impervious sheet (55) and the edges are secured to the edges of the top skin covering (13). The air cell cushion (10) is made by placing the preformed top into molds smaller in depth than the air cells (41) to partially collapse the air cells (41) before a base (40) is applied to the top to close the open ends of the air cells (41) and trap air therein.