Back construction for seating unit having spring bias
US6991291B2 · kind B2 · utility
80Cited by
130References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2005 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Feb 1, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S297/02
- WIPO fieldFurniture, games
- WIPO sectorOther fields
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 springs that press on a rear surface of the back shell to bias the flexible lumbar region forwardly so as to support a seated user, thus biasing the lumbar region of the back shell forwardly in a manner distributing stress applied to the lumbar region by the seated user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.