Chair back rest with improved resilience and support
US8157325B2 · kind B2 · utility
2Cited by
54References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2003 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Dec 30, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S297/03
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A chair having a seat and a back rest comprises a fluid-containing cushion in the back rest that provides passive automatically adjustable support for the user's lumbar region. The cushion can comprise one or more fluid-containing chambers encompassing the areas of the user's upper back and lumbar regions. As the user leans backs, fluid is forced from the regions adjacent the upper back down to the lumbar region to provide enhanced lumbar support to the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.