Backrest with adjustable lumbar support
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 10, 2004
Issued Date -
N/A
app pub date -
Dec 20, 2001
filing date -
Jun 20, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A backrest for supporting a person's back having a front surface and a rear surface has a flexible support section having a fixed end which is mounted to a support structure and a free end which is displaceable vertically with respect to the fixed end, the support section is configured to be compressed and displaced forwardly when the free end is moved towards the fixed end. In one embodiment, an adjustment member is drivingly connected to the free end; and, a detent member for selectively receiving the adjustment member in one of a plurality of positions, the support member biasing the adjustment member into retaining engagement with the detent member due to the compression of the flexible support member by the displacement of the free end towards the fixed end. In another embodiment, a cam mounted off-center on a shafted controls the compression of the support structure.
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Family
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