Traction chain comprising a gear mechanism integrated in a wheel
US7165640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2003 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Oct 9, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/0034
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Traction chain for an automobile vehicle including a wheel support (K) which supports a rotating hub designed to receive a drive wheel (W), and a rotating toothed wheel having the same rotation axis as that of the drive wheel, the toothed wheel meshing directly with the hub. At least two gear-wheels are permanently engaged with the toothed wheel and are rotated by an input shaft that is driven by an electric motor. A gear ratio change shifter mechanism is shiftable between first and second driving positions and a neutral non-driving position. In the first driving position the shifter mechanism directly connects the input shaft with one of the gear-wheels. In the second driving position the shifter mechanism indirectly connects the input shaft with the other gear-wheel through a transmission path which establishes a gear reduction ratio different from the gear ratio established by the direct connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.