Motor vehicle seat back
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 4, 1992
Issued Date -
N/A
app pub date -
Mar 6, 1991
filing date -
Aug 18, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
First Claim
Family
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Cited Art Landscape
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