Cushion
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United States of America Patent
Stats
-
Mar 26, 1996
Grant Date -
N/A
app pub date -
Mar 24, 1995
filing date -
Sep 29, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cushion for the seat of a chair is provided, having at least two groups of cyclically inflatable tubes (4, 6, 8, 10), each group comprising at least one tube. Control means (18) inflates and deflates each group sequentially. The cushion also has a buffer chamber (12, 14) maintained by the control means (18) in communication with the inflated group or groups of cyclically inflatable tubes. The buffer chamber comprises at least one inflatable buffer tube which provides a part of the sitting surface of the chair.
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