Height adjustable work surface and control therefor
US6286441A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1999 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Apr 30, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47B2200/0058
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A motorized height adjustable table having a support base, a top assembly including a substantially horizontally disposed work surface, and first and second powered drive assemblies for raising and lowering the work surface. The first and second drive assemblies have first and second electric motors and drivingly engage the top assembly for effecting vertical movement of the top assembly to adjust the height of the work surface. A controller is coupled to the first and second drive assemblies for simultaneously controlling the first and second electric motors. The controller senses a relative height displacement between the first and second drive assemblies and de-energizes the motor controlling for the leading drive assembly until the relative difference in height between the first and second drive assemblies is substantially zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.