Mechanically stretchable apparatus for a sofa and sofa thereof
US11700942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2021 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | Nov 1, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C17/04
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A mechanically stretchable apparatus for a sofa and a sofa thereof are provided. The mechanically stretchable apparatus includes: a seat component, a linkage component, a back component and a leg component. The seat component further includes a base, a first rotating part, the second rotating part, and the seat linkage structure placed between the first and second rotating parts. The seat linkage structure includes a back linkage with a seat connection point, a transmission connection point, and a back connection point. The seat connection point is connected to the first rotating part. The back connection point is connected to the back component. The back component and the leg component are respectively connected to the linkage component, and the linkage component is connected to the seat linkage structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.