Electrical power assistance device for transport wheelchair
US11234874B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2021 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | May 21, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G5/0875
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrical power assistance device designed to be removably coupled to existing transport wheelchairs to provide electric power to aid in transportation of a person sitting in the wheelchair, while being detachable to allow the transport chair to fold up for easy storage in a car or other vehicle. The electrical power assistance device includes a motor powered by a rechargeable battery, where the motor drives an internal shaft which rotates a pair of friction wheels. A clutch, provided on a separate axle coupled to the friction wheels by eccentric disks, allows the friction wheels to engage or disengage with the rear wheels of the transport wheelchair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.