Patent Number: 7,131,700

Title: Back construction for seating unit

Abstract: A back construction includes a back shell having stiff thoracic and pelvic regions connected by a flexible lumbar region in a manner adapted to ergonomically support a seated user. The back shell includes spaced-apart resilient edge strips and leaf springs attached to or embedded into the edge strip. The springs match a curvature of the strips and span the lumbar region, biasing the lumbar region of the back shell forwardly in a manner distributing stress applied to the lumbar region by the seated user.

Inventors: Knoblock, legal representative; Daryl (Fort Collins, CO), Dammermann; Arnold B. (Winona, MN), DeKraker; Larry (Holland, MI), Heidmann; Kurt R. (Grand Rapids, MI), Peterson; Gordon J. (Rockford, MI), Roossien; Charles P. (Wyoming, MI), Teppo; David S. (East Grand Rapids, MI), Knoblock, deceased; Glenn A. (Fort Collins, CO)

Assignee: Steelcase Development Corporation

International Classification: A47C 7/02 (20060101)

Expiration Date: 2019-11-07 0:00:00