Backupholstery adjustment device for wheelchair
US7188902B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Apr 12, 2005 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Jul 29, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S297/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A backupholstery adjustment device for a wheelchair includes a wheelchair having a horizontally and/or obliquely adjusted backupholstery which has a pair of upper positioning rods and a pair of lower positioning rods spacedly secured to a plurality of V-shaped linking plates on inward arcuate lateral sides thereof, a pair of upper and a pair of lower adjustment pieces respectively secured to the upper and lower portions of a pair of L-shaped handles through a plurality of clamping plates. The upper adjustment pieces each has a slit abutting a stopping portion in the top insertable by the pair of upper positioning rods and a plurality of grooves formed inside for selectively engaging the upper positioning rods. The lower adjustment pieces each has a slit abutting a stopping portion, too, insertable by the pair of lower positioning rods and a single groove engageable within the lower positioning rods. In an alternate arrangement, both the upper and lower adjustment pieces having a plurality of positioning grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.