Motorized wheelchair chassis and motorized wheelchair comprising the same
US11123242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2019 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Mar 27, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G5/1078
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A motorized wheelchair chassis includes a frame assembly having a first frame element that supports first and second caster wheels at an end of the first frame element. The first frame element is designed to support a seat assembly, a battery support assembly secured to an underside of the frame assembly, at least one battery, first and second power drive assemblies disposed on lateral sides of the battery support assembly, and first and second drive wheels driven by the first and second power drive assemblies, respectively. The frame assembly further comprises a second frame element that is secured to the battery support assembly. The first frame element is supported onto the second frame element via a coupling structure comprising a ball-joint bearing permitting relative movement of the first frame element with respect to the second frame element in more than two degrees of freedom within a limited range of movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.