| 摘要 |
PCT No. PCT/US95/06736 Sec. 371 Date Dec. 30, 1996 Sec. 102(e) Date Dec. 30, 1996 PCT Filed May 26, 1995 PCT Pub. No. WO96/37129 PCT Pub. Date Nov. 28, 1996A seat cushion system that reduces the vertical impact to the seat occupant within the space and cost constraints of existing seat support structures. In one embodiment, the seat cushion employs a series of layers of varying density and lateral displacement foams with a rigid or semi-rigid material within the cushion. Each layer of foam can change in both density and lateral displacement depending on the volumetric space available. Another embodiment demonstrates how only two layers of differing densities and lateral displacement can greatly reduce the impact force from vertical thrust.
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