Adjustable armrest of an office chair
US5975640A · kind A · utility
Inventor
Key dates
| Filing date | Aug 19, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Aug 19, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/541
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Adjustable armrest including an armrest holder frame, a bottom plate fixedly fastened to the armrest holder frame, a first movable plate having a front end pivoted to one end of the bottom plate and a rear end, a second movable plate having one end pivoted to the rear end of the first movable plate, an elastomer block fixedly mounted on the second movable plate at the top, an armrest pad pivoted to the second movable plate and supported on the elastomer block and forced to oscillate back and forth, first lock means adapted to lock and first movable plate and the bottom plate in a received position where the first movable plate and the bottom plate are vertically arranged in a stack; and second lock means adapted to lock the first movable plate and second movable plate in a received position where the second movable plate and the first movable plate are vertically arranged in a stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.