Back construction for seating unit having inverted U-shaped frame
US7040709B2 · kind B2 · utility
28Cited by
136References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2005 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Feb 7, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S297/02
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A back construction includes an inverted U-shaped back frame and a back shell supported on the back frame and having stiff thoracic and pelvic regions connected by a flexible lumbar region in a manner adapted to ergonomically support a seated user. The lumber section includes a plurality of vertically spaced slots to increase its flexibility. The back shell has a complex curved shape that is forwardly concave in horizontal cross section and forwardly convex in vertical cross section. A force-generating mechanism biases the lumber section forwardly for lumbar support to a seated user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.