Dynamic chair
US7434881B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Apr 30, 2007 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Apr 30, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C9/002
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A dynamic chair providing automatic motion in a seat. The chair has bottom, a support means disposed between the base and the seat bottom, a drive motor. A first drive wheel driven by the drive motor has a first mounting point offset from a first distance from the center of the first drive wheel; a second drive wheel driven by the first drive wheel, the second drive wheel having a different diameter from the diameter of the first drive wheel; and a crankshaft having a first crankshaft end and a second crankshaft end, the first crankshaft end connected to the second drive wheel and rotatably driven by the second drive wheel, the second crankshaft end having an eccentric providing a second offset mounting point offset from a second distance from the center of the second crankshaft end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.