Aeronautics and astronautics – Aircraft structure – Fuselage and body construction
Patent
1994-04-01
1995-06-27
Grant, William
Aeronautics and astronautics
Aircraft structure
Fuselage and body construction
244122A, 2972161, B64D 25115
Patent
active
054273315
ABSTRACT:
Seat structure is provided for supporting a person. An inflatable cushion is coupled to the seat structure in a position for bearing at least a part of the force exerted by the person when supported by the seat structure. A source of gas under pressure is provided for inflating the cushion. A control arrangement including a pressure sensor and a valve is coupled to the cushion and to the source for maintaining the pressure of the gas in the cushion at a given level. Also provided is a pressure release mechanism including an outlet and an outlet valve independent of the control arrangement for deflating the cushion to allow the force exerted by the person supported by the seat structure, when high acceleration forces are encountered, to be born primarily by the seat structure. In one embodiment, the pressure release mechanism is a flexible strap for compressing the cushion when the outlet valve is opened for increasing the rate of deflation. In other embodiments an ejector and a vacuum container are employed for increasing the rate of deflation. A primer cord also may be employed for rupturing the cushion when actuated.
REFERENCES:
patent: 2981317 (1961-04-01), Cartwright, Jr. et al.
patent: 3192540 (1965-07-01), Swank
patent: 3192541 (1965-07-01), Moore
patent: 3966146 (1976-06-01), Roberts
patent: 4634083 (1987-01-01), McKinnon
patent: 4834322 (1989-05-01), Wurst
Grant William
Lockheed Corporation
Zobal Arthur F.
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