Chair with adjustable back
US4007962A · kind A · utility
46Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1976 |
| Grant date | Feb 15, 1977 |
| Priority date | — |
| Expiry date | Jan 5, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/446
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A work chair with an upholstered, adjustable seat and back which gives ergonomically correct support to the occupant's spine. The chair back comprises a back support and a shoulder support. The lower end of the back support is pivotally mounted in a rounded buttocks support at the rear of the chair seat. The shoulder support is pivotally mounted at the upper end of the back support. Both parts are contoured to correspond to the natural position of the spine. The inclinations of the back support and shoulder support are independently governed by a gas spring device and a torsion member respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.