Foot operated mechanical steering system for a manual wheelchair
US9724253B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2016 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Oct 11, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K21/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A mechanical steering system for a wheelchair to permit a user's foot to pivotably adjust a pair of caster wheels of the wheelchair is provided. The system includes a platform coupled to a frame of the wheelchair, a foot controller assembly pivotably mounted to the platform and having a foot plate to receive the user's foot and a rod coupled to the foot plate, a drag linkage member coupled to the rod of the foot controller assembly, and a pair of lever arm assemblies pivotably mounted to the drag linkage member, each lever arm assembly having a lever rod coupled to a fork member, the fork member being coupled to one of the caster wheels. Pivotable movement of the foot plate is transferred through the drag linkage member to permit both lever rods of the lever arm assemblies to pivot, thereby enabling simultaneous pivotal adjustments of the caster wheels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.