Ergonomic chair
US4316632A · kind A · utility
40Cited by
8References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1979 |
| Grant date | Feb 23, 1982 |
| Priority date | — |
| Expiry date | Aug 22, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/46
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
In order to achieve the necessary flexible curve according to the natural curve of the human spine in the field of back supports, the back support, attached relatively rigidly in its lower section to the seat, is constructed increasingly more flexibly towards the top. So that the desired course of the spine-like curve can also be achieved at the upper end of the shoulder pad connected to the back rest when the chair is "loaded", a spring member which becomes progressively "harder" is mounted in the connecting element between the end of the back rest and the shoulder pad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.