Lumbar support
AssigneeSchukra Geraetebau GmbH
InventorJan Petzel
Life of this patent
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Abstract
The invention relates to a lumbar support comprising a plurality of pneumatically operated chambers (11-14) for adjusting the curvature of a seat back, wherein the lumbar support comprises two outer chambers (11, 12) and two central chambers (13, 14) in the longitudinal direction of the seat back, wherein the two central chambers (13, 14) are arranged over one another perpendicularly to the longitudinal direction of the seat back between the two outer chambers, wherein each outer chamber has an air connection to one of the two central chambers.
Claims10
A lumbar support for adjusting a curvature of a seat back having a longitudinal extent, the lumbar support comprising:
- a plurality of pneumatic chambers including:
- a plurality of outer first chambers, each first chamber defining an air flow opening for changing an air pressure in the corresponding first chamber,
- a plurality of central second chambers positioned between the outer chambers and positioned over one another in a direction perpendicular to the longitudinal extent of the seat back, each second chamber fluidly communicating with one of the first chambers for changing an air pressure in the corresponding second chamber,
- wherein each of the plurality of outer first chambers does not overlap with any other chamber in the direction perpendicular to the longitudinal extent of the seat back.
Dependencies are inferred from the claim text.