Chair
US6422649B1 · kind B1 · utility
5Cited by
14References
39Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2001 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Jan 24, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/443
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A chair has a seat and a backrest which are independently pivotable within limits at extremities. The seat is biased upwardly at the front and the backrest is biased forwardly. The seat and the backrest have a common pivot joint, under the center of gravity of the occupant. There are no occupant-operated controls as the chair responds automatically to the posture of the occupant, providing full support at all relative positions of the seat and the backrest in a balanced manner for occupants of a wide range of weights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.