Device for adjusting the tilting resistance of a chair seat
US6053574A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1998 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Jun 18, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/448
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
For automatically adjusting the tilting resistance of a chair seat (6), which is tiltably attached on a base column (1) via a horizontal shaft provided across the chair, and where tilting resistance and springing are determined by two spring elements (13, 14), one spring is compressed by tilting in one direction and the other spring compressed by tilting in the opposite direction. The spring force is adjustable. In order to be able to adapt the tilting resistance to the seat's/backrest's setting automatically, the spring elements (13, 14) are connected to the seat/backrest by mans of a connecting element which directly influences their spring force by an adjustment of the seat and/or backrest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.