Seating-system for folding wheelchairs
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United States of America Patent
Stats
-
Mar 22, 1988
Grant Date -
N/A
app pub date -
Nov 7, 1985
filing date -
Nov 7, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a seat structure for collapsible (foldable) invalid chairs provided with a flexible seat and/or back covering, comprising an upholstery material (3) and a covering material (4) at least partially enclosing said upholstery material. The covering material (4) is provided with ultrafine perforations, and an open-pore foam material shaped as a molded part is used for the upholstery material.
First Claim
Family
International Classification(s)
Cited Art Landscape
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