Wheelchair having pivoting backrest frame assembly
US8328215B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2010 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Sep 30, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G5/1054
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wheelchair comprises a base frame, a backrest frame and a hinge assembly. The base frame has first and second side frame members. The hinge assembly connects the backrest frame to a portion of the base frame for selective pivotal movement. The hinge assembly includes a locking mechanism configured to provide selective discrete locking positions of the backrest relative to the base frame. The locking mechanism includes a locking pin and a plurality of cooperating locking apertures. The locking pin is adapted to selectively engage one of the plurality of locking apertures to define a backrest angle relative to the base frame. One or more plugs are adapted to engage one or more of the plurality of locking apertures to prevent the locking pin from cooperating with the plugged locking aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.