Pneumatic lordosis support

Details Pneumatic lordosis support Pneumatic lordosis support

2005-10-31

2010-12-28

Cranmer, Laurie K (Department: 3636)

Chairs and seats

Bottom or back with means to alter contour

Providing support for lower back region

C297S284100, C297S284300, C297S284900

Reexamination Certificate

active

07857387

ABSTRACT:
A pneumatic lordosis support (1) consists of a cushion (3), which is integrated into the backrest (2) of a seat. Laterally of a vertical center line (7), the cushion encompasses horizontal connections (8) between a front side and a rear side of the cushion (3). The cushion (3) is composed of an air-tight flexible membrane. In the region of the vertical center line (7), the connections (8) encompass breaks. Vertically offset to the connections (8), the cushion (3) encompasses further central horizontal connections (10), which extend substantially across the region of the breaks in the connection (8). In the region where connections (8) and central connections (10) are located close to one another, reduced radii of the membrane lead to the occurrence of less stress than in the remaining cushions (3) and allow the spine of a user to dip into the cushion (3) more softly.

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