Vehicle with central wheel drive, in particular a wheelchair or stand-up wheelchair
US8118321B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2008 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Nov 18, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S180/907
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The vehicle, for example a stand-up wheelchair, comprises a frame (11) and, arranged on the latter, a seat device (19). On each side of the frame (11), the central wheel (13), which can be driven by a motor (27), and the front wheel (15) are operatively connected to each other by an endless chain (45). The frame (11) has a front part (21) and a rear part (23), which are connected to each other in an articulated manner by way of a joint (25). In the sitting position, the front wheels (15) are not in contact with the ground, which means that they do not obstruct the manoeuvring of the vehicle in a confined space. In the standing position, the front wheels (15) are in contact with the ground, but the central wheels (13) are not. The user, in the standing position, is thus able to turn about the axis of the vehicle, without the central wheels (13) having a blocking action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.