Mechanical stretching device of convertible sofa
US9314099B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2012 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Dec 13, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C1/0355
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A mechanical stretching device of a convertible sofa includes left components, right components, a switch component, and a locking spring. The left components are fixedly connected to the right components by fixing components. The switch component is mounted on the left components or on the right components. The left components and the right components respectively include a foot plate, a first foot lever, a second foot lever, a third foot lever, a fourth foot lever, a fifth foot lever, a side plate, a rotating shaft transmission member, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a back member, a calf plate, a first support member, a second support member, a linkage member, a protective member, a seahorse member, and a bottom foot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.