Adjustable lumbar support assembly for a chair
US8308240B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jul 1, 2011 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Jul 27, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/462
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An adjustable lumbar support assembly for a chair includes a base, a lumbar support, and an angle adjustment assembly. The base is formed at a lower end of the backrest of the chair. Bar sections bilaterally formed at a lower end of the lumbar support are positioned across the base. The angle adjustment assembly is connected with one bar section of the lumbar support and the base. To tilt the lumbar support forward or backward, a pulling rod is pulled backward to bring the lumbar support into a free state where projections on corresponding surfaces of a positioning element and a moving element mounted around the pulling rod are pressed against each other to allow manual adjustment of the lumbar support for optimal support. When the pulling rod is pushed back, the lumbar support enters a locked state where the positioning element and the moving element are in projection-recess engagement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.