Compact drive mechanism for electrically powered vehicle
US7159677B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2004 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Aug 13, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2220/46
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A compact and lightweight drive mechanism for an electrically powered vehicle such as a wheelchair or a scooter. The compact drive mechanism includes a gearmotor combining a motor and a gearbox. High strength rare earth magnets and a large diameter enable the motor to generate a high torque. Gearmotor efficiency is maximized by placing the motor and gearbox in a direct drive relationship, with the shafts of both motor and gearbox parallel to one another. The compact drive mechanism weighs less than conventional drive mechanisms and occupies less space. The compact drive mechanism therefore improves efficiency and lowers power requirements over conventional systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.