Backrest cushion for an air passenger seat

Details Backrest cushion for an air passenger seat Backrest cushion for an air passenger seat

1987-01-14

1988-12-27

Barefoot, Galen

Aeronautics and astronautics

Aircraft structure

Fuselage and body construction

297460, 297DIG1, 297DIG5, 5459, 5481, 428921, B64D 1106

Patent

active

047935740

ABSTRACT:
In a backrest cushion of polyurethane foam in flame-retardant finish for air passenger seats, the protection against the risk of fire spreading is increased and at the same time the weight is reduced and the comfort increased according to the invention by making the whole volume of the backrest cushion of a flame-retardant foam and providing it, at least in the region which is put under pressure in use, with recesses extending parallel to the direction of pressure and all ending equidistant from the surface of the cushion.

REFERENCES:
patent: 2135657 (1938-11-01), Church
patent: 2619659 (1952-12-01), Futterknecht
patent: 3028610 (1962-04-01), Talalay
patent: 3833260 (1974-09-01), Harder, Jr.
patent: 4110881 (1978-09-01), Thompson
patent: 4223095 (1980-09-01), Esser et al.
patent: 4484782 (1984-11-01), Larson
patent: 4493871 (1985-01-01), Edgerley et al.

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