Sofa bed
US11116321B2 · kind B2 · utility
0Cited by
49References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2017 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Feb 12, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C17/2076
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A sofa bed is configured to be switched between a sofa configuration and a bed configuration. The sofa bed includes a base frame, a middle frame rotatably coupled to the base frame, a seat-and-foot frame rotatably coupled to the middle frame, a back-and-head frame rotatably coupled to the base frame, and a spring coupled between at least two of the base frame, the middle frame, the seat-and-back frame, and the back-and-head frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.