Folding chair with hinge
US9737147B2 · kind B2 · utility
2Cited by
43References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 28, 2015 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Jul 24, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C4/24
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A folding chair has a backrest, a seat and legs that are coupled to two hinges. The folding chair has an open position and a closed position. In the closed position the backrest portion is parallel to the seat portion and in the open position the angle between the seat portion and the backrest portion is greater than 90 degrees. The hinges are made of two elongated rod structures each having a helical center section. The two elongated rod structures are coupled together with a bolt to form the hinge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.