Rear wheel drive power wheelchair with ground-contacting anti-tip wheels
US7219924B2 · kind B2 · utility
61Cited by
33References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2003 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Mar 5, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S297/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A curb-climbing rear wheel drive power wheelchair is disclosed having a pair of drive wheels, at least one ground-engaging idler wheel connected to the frame forward of the drive wheels and at least one ground-contacting anti-tip caster wheel mounted to the wheelchair aft of the drive wheels. The drive wheels and anti-tip caster wheels are mounted on common suspension arms, pivoted to the frame of the wheelchair behind the drive wheels and resiliently suspended, so that the anti-tip caster wheels move up and down in response to movements of the drive wheel suspension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.