The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 07, 2006
Filed:
Feb. 01, 2005
Daryl Knoblock, Legal Representative, Fort Collins, CO (US);
Arnold B. Dammermann, Winona, MN (US);
Larry Dekraker, Holland, MI (US);
Kurt R. Heidmann, Grand Rapids, MI (US);
Gordon J. Peterson, Rockford, MI (US);
Charles P. Roossien, Wyoming, MI (US);
David S. Teppo, East Grand Rapids, MI (US);
Daryl Knoblock, legal representative, Fort Collins, CO (US);
Arnold B. Dammermann, Winona, MN (US);
Larry DeKraker, Holland, MI (US);
Kurt R. Heidmann, Grand Rapids, MI (US);
Gordon J. Peterson, Rockford, MI (US);
Charles P. Roossien, Wyoming, MI (US);
David S. Teppo, East Grand Rapids, MI (US);
Steelcase Development Corporation, Caledonia, MI (US);
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.