Chair for active engagement of user
US11805905B2 · kind B2 · utility
0Cited by
71References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2022 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Nov 2, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/46
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A lower chair for supporting an upper chair on which a user sits. The lower chair including a base, a swivel mechanism supported by the base and defining a vertical swivel axis, and a four-bar linkage mounted to the swivel mechanism for rotation about the swivel axis. The four-bar linkage includes a coupler link that moves about a coupler curve. The lower chair also includes a column having a lower end affixed to the coupler link for movement of the lower end along the coupler curve. The column defines a column axis and is adapted to support the upper chair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.