Chair with a locking unit
US6467845B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Sep 21, 2001 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Sep 21, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C1/027
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A locking unit includes a frame to permit extension of a bolt. An upper portion of a bracket is pivoted to left and right side walls of the frame. A linking member has a rear part connected to the bracket, and a front part formed with an arcuate slot through which the bolt extends. A stationary clamping seat is fixed on the right side wall. A movable clamping member is mounted on the bolt. An operating lever is pivoted to a C-shaped connector about a first pivot, and is pivoted to the right side wall about a second pivot. When the bolt is moved to a locking position, the linking member counteracts the clamping force, which results in a pulling force that pulls the C-shaped connector in a direction toward the left side wall along a horizontal line defined by the bolt and the operating lever is prevented from being turned upwardly by the pulling force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.