Back construction for seating unit having inverted U-shaped frame
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United States of America Patent
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May 9, 2006
Issued Date -
N/A
app pub date -
Feb 1, 2005
filing date -
Oct 24, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A back construction includes an inverted U-shaped back frame and a back shell supported on the back frame and having stiff thoracic and pelvic regions connected by a flexible lumbar region in a manner adapted to ergonomically support a seated user. The lumber section includes a plurality of vertically spaced slots to increase its flexibility. The back shell has a complex curved shape that is forwardly concave in horizontal cross section and forwardly convex in vertical cross section. A force-generating mechanism biases the lumber section forwardly for lumbar support to a seated user.
First Claim
Family
International Classification(s)
Cited Art Landscape
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