Wheelchair frame
US5409247A · kind A · utility
Inventors
Key dates
| Filing date | Aug 17, 1993 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Aug 17, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/343
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wheelchair frame is defined by a pair of side frame assemblies that are rigidly connected to each other by a seat pan. Each side frame assembly includes a seat mounting member on which the seat pan is mounted, a bottom member connected to the seat mounting member, and a footrest member pivotally connected to the seat mounting member and rigidly connected to the bottom member. A drive wheel mounting assembly can include a generally U-shaped mounting block for being mounted on a bottom member of each side frame assembly, and a drive axle receiving arrangement mounted on each mounting block for receiving a drive wheel axle. The bottom member can be provided with a flat surface upon which the drive axle receiving arrangement is placed. A caster wheel mounting assembly mounted on each bottom member can include a caster wheel mount having two spaced apart forks for receiving a caster wheel, a stem connected to the caster wheel mount, a caster sleeve in which the stem is positioned, and a bearing disposed between the caster sleeve and the stem for allowing rotational movement of the caster sleeve relative to the stem and the caster wheel mount. To adjust the seat pan angle, the rear end…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.