Multi-terrain wheelchair
US5507513A · kind A · utility
Inventors
Key dates
| Filing date | Jan 18, 1995 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Jan 18, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G5/128
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A multi-terrain wheelchair which has numerous features to provide for high degrees of maneuverability, versatility, comfort, convenience, and stability. The wheelchair has a suspension system in which a swing arm is attached to a rear camber tube and rear axle assembly. The swing arm pivots about an upward protrusion from the frame of the wheelchair. The swing arm meets resistance from a pneumatic cylinder, also attached to the frame. The pneumatic cylinder rather than the frame and the occupant absorbs any forces resulting from rough terrain. This suspension system results in a more comfortable ride and increases the versatility of the chair, in that it can traverse rough terrain with less impact on its occupant. The front wheel assembly of the wheelchair provides it with great maneuverability and stability. The large front wheels enable the chair to roll over any obstacle. Wheel stops and a linkage are provided between the front wheels. The back wheels are cambered for stability and to enable the occupant who is wheeling the chair to keep his hands clear of obstacles. An adjustable footrest and seat and a curved backrest increase comfort for the occupant. The removable seat and h…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.