Patent ID: 7717520
Filing Date: 2010-05-18
Classification: B64D,Y02T

Abstract:
1. An energy-absorbent encapsulated and crushable aircraft seat cushioning system comprising: a. a permanently crushable insert providing a bottom layer of energy absorbing material effective for absorbing sudden energy spikes and thereby reducing forces transferred from an aircraft seat structure to a passenger and enhancing the passenger's ability for rapid egress of the aircraft; b. a next layer of main cushioning foam; c. an ischial insert of cushioning foam placed atop the main cushioning foam; d. a semi-dynamic and self-inflatable pneumatic cell encapsulating the energy absorbing layer, the main cushioning foam layer and the ischial insert of cushioning foam, wherein the semi-dynamic pneumatic cell is a sealable bladder which is automatically adjustable in accordance with changes in aircraft cabin pressure, the cell having a two-way dual action reciprocating breather valve effective for maintaining and adjusting inflation of the cell when the aircraft is pressurized and deflation of the cell when the aircraft is grounded; and e. a finishing fabric or upholstery covering the seat cushioning elements.