Extendible chair arm
US6213556A · kind A · utility
Inventor
Key dates
| Filing date | Jul 28, 2000 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Jul 28, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/541
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An extendible chair arm comprises a rail member supported by an arm stump, a sliding member disposed in rail member being moveable within a length of trough of rail member, a first pivot plate with inner end pivotably secured to sliding member by a bearing, and a second pivot plate pivotably secured to the outer end of first pivot plate. With this, arm pad supported by second pivot plate can move and pivot with respect to the chair as sliding member moves in cooperation with the rotation of first pivot plate relative to sliding member and second pivot plate for providing a support for elbow when doing office work on table. Thus prevents arm fatigue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.