Height-adjustable folding chair
US11844439B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Feb 28, 2023 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | Feb 28, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C9/105
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present disclosure proposes a height-adjustable folding chair including a base, retractable arms connected to the base and legs connected to the base; the base includes a support enclosing an inner cavity and a locking assembly arranged in the inner cavity; the support includes an upper receiving portion connected to the arms and a lower receiving portion connected to the legs; the locking assembly includes a leg unlock button inserted in the inner cavity and slidable relative to the support, a first spring, and a first locking block. The first locking block defines locking slots each with a downward opening; an end of each leg connected to the lower receiving portion defines a positioning slot and is arranged with a positioning tongue protruding from an edge of the positioning slot and a positioning block protruding upward from a bottom of the positioning slot and matched with a corresponding locking slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.