Apparatus for use in turning steerable vehicle wheels
US11498616B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2019 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Sep 9, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H1/16
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus for use in turning steerable vehicle wheels includes a steering column having a pinion connected with a vehicle steering wheel such that rotation of the steering wheel results in rotation of the pinion. An electrically powered steering unit includes an electric motor having a first output shaft rotatable about an axis. A first planetary gear stage has a first gear reduction ratio and is driven by the first output shaft. A second planetary gear stage is driven by the first planetary gear stage and the pinion and has a second gear reduction ratio different from the first gear reduction ratio. A second output shaft is driven by the second planetary gear stage and coupled to the steerable wheels such that rotation of the second output shaft affects steering of the vehicle wheels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.