Chair having a leaf spring in contact with a linkage to provide a resistance to tilting of a backrest of the chair relative to a column of the chair
US11998118B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2023 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Jul 7, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C31/126
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A chair, comprising, a backrest, a seat coupled with the backrest, a column coupled with the seat, a linkage statically attached to the backrest and rotatably attached below the seat, a leaf spring statically attached at one end and in contact with the linkage to provide a resistance to tilting of the backrest relative to the column, a first structure. A portion of the first structure has an arc shape that includes one or more teeth, and a second structure in contact with the first structure. The chair is configured such that, when a weight is applied to the seat, one or more teeth of the second structure move along the one or more teeth of the first structure to provide an increased resistance to tilting of the backrest relative to the column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.