Adjustable seat cushion with tension limiting means
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United States of America Patent
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Dec 15, 1987
Grant Date -
N/A
app pub date -
Dec 18, 1986
filing date -
Dec 18, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bottom cushion for use in a seat of the type used in situations where an occupant could be subjected to spine damaging injury resulting from rapid vertical acceleration or deceleration. The seat cushion includes a frame mounted above the rigid seat pan of the seat with an air-permeable, flexible membrane suspendingly carried in the frame. The seat cushion is provided with a membrane adjusting mechanism by which an occupant applies tension to the membrane to lift his or her posterior above the seat pan for comfort reasons, and has a vertical displacement limiting mechanism which for safety reasons prevents the occupant from lifting the membrane and his or her posterior an excessive distance above the set pan.
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Family
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