Height-adjustment mechanism for a chair
US6533355B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2001 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Mar 28, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1967
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A height adjustment mechanism in a chair operates automatically by raising and lowering a chair component such as a chair back. The height adjustment mechanism is provided on a chair back or other chair support and includes a gear which engages a rack member that is vertically movable relative thereto in response to movement of the chair back. A locking member is provided which engages the gear to prevent downward movement of the chair back while still permitting upward movement of the chair back. A disengagement member also is provided to separate the gear and the locking member and maintain the gear in a disengaged position that permits lowering of the chair back.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.