Armchair
US11185165B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2020 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Sep 11, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/541
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An armchair includes a base, a backrest pivotally connected to the base by a first rotating shaft, an armrest connected to the base and an elastic assembly fixed on the armrest. The backrest and the elastic assembly are pivotally connected by a second rotating shaft. The elastic assembly is configured to provide elastic force when the backrest swings around the first rotating shaft. The elastic assembly arranged between the backrest and the armrest permits the backrest to be able to swing relative to the base. In use, the elastic assembly controls the swing amplitude of the backrest according to the pressure exerted by the user's back on the backrest. When the user reclines backward, the elastic assembly acts as a cushion to support the backrest to slowly swing backward due to the elastic force. When the user rises, the elastic force of the elastic assembly urges the backrest to reset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.