Mid-wheel drive wheelchair with front wheel multiple bias suspension and anti-tip assembly
US6460641B1 · kind B1 · utility
116Cited by
21References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Jun 29, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S180/907
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wheelchair has a plurality of central wheels which can be either power or manually driven, at least one rear caster wheel, and at least one resiliently biased ground engaging front wheel having a multiple suspension assembly. The wheelchair has improved tracking since the front wheel is maintained on the ground even on undulating, bumpy, or irregular surfaces. The wheelchair also has improved stability since the front ground engaging wheel also acts as a resiliently biased anti-tip wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.