Motor vehicle seat back

Details Motor vehicle seat back Motor vehicle seat back

1991-03-06

1992-08-04

Aschenbrenner, Peter A.

Chairs and seats

Bottom or back with means to alter contour

297284E, 297284C, 128 38, 5453, A47C 300

Patent

active

051352826

ABSTRACT:
A seat back for use in private or commercial vehicles is disclosed constituting a pulsation cushion formed having a plurality of expandable chambers interconnected by pressure limiting valves. The valves are responsive to fluid under pressure to produce a sequential rolling wave in the chambers to modify the cross-sectional amplitude of the seat back in the longitudinal and/or transverse direction thereby to massage the back of a person occupying the seat. An adjustable pulsing device is provided to control the supply rate of the fluid and the frequency and amplitude of pulsation.

REFERENCES:
patent: 3483862 (1969-12-01), Takeuchi
patent: 3678520 (1972-07-01), Evans
patent: 3982786 (1976-09-01), Burgin et al.
patent: 4583255 (1986-04-01), Mogaki et al.

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