Exchangeable universal wheelchair power assist
US11660241B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2022 |
| Grant date | May 30, 2023 |
| Priority date | — |
| Expiry date | Nov 9, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G5/0816
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus and associated methods relate to a wheelchair power assist device configured to be installed, uninstalled and exchanged using an exchange tab welded to a wheelchair, and when installed to switch a motorized friction roller between engaged and disengaged modes with a wheelchair wheel, based on an engagement actuator configured to move the friction roller relative to the wheelchair. The friction roller may be operably coupled with an engagement member configured to move relative to the wheelchair. The engagement member may be moved by an extendable and retractable actuator shaft coupled with the wheelchair. A manual wheelchair may be converted to a powered wheelchair using a motorized friction roller for each wheelchair wheel while leaving an open space behind the wheelchair seating area, advantageously permitting the power assist devices to remain attached to a foldable wheelchair in either folded or unfolded configurations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.