Wheelchair with anti-tip assembly
US5137295A · kind A · utility
Inventor
Key dates
| Filing date | Feb 28, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Feb 28, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S297/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wheelchair having an active anti-tipper assembly to prevent its rider from tipping over backwards when the backrest frame is reclined rearwardly. The anti-tipper assembly has a pair of laterally spaced linkage members whose top ends are pivotally connected to the backrest frame. The bottom ends of the linkage members are pivotally connected to leg members at a point intermediate their length. The leg member in turn have their top ends pivotally connected to the rear ends of the longitudinally extending bottom frame members of the wheelchair frame. The linkage members are adjustable in length. The anti-tipping leg members have rollers secured to their rearward ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.