Adjustable chair
US4200332A · kind A · utility
74Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1978 |
| Grant date | Apr 29, 1980 |
| Priority date | — |
| Expiry date | Jul 20, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C1/03283
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A lockable gas cylinder in parallel with a mechanical spring controls the adjustment of tilt in a chair seat and back. A linkage mechanism permits tilting of the chair seat about a pivot located close to the forward edge of the seat and permits tilting of the back about a pivot which is located near the rear edge of the seat. The gas cylinder may be released to permit rocking of the chair against the force of the mechanical spring alone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.