Bicycle drive unit
US8919478B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 2013 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Jul 6, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K19/34
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In accordance with a first aspect, a bicycle drive unit includes a first bottom bracket, a crank axle, and a first motor. The first bottom bracket is configured to be coupled to a first axial end of a bottom bracket shell of a bicycle. The crank axle is rotatably supported by the first bottom bracket with respect to a rotational axis. The crank axle has a first end portion and a second end portion. The first motor includes a first casing non-rotatably coupled to the crank axle, a second casing non-rotatably coupled to the bottom bracket shell, a first rotor having a first magnet disposed on the first casing, and a first stator non-rotatably coupled to the first bottom bracket. The first magnet and the first stator radially face with each other with respect to the rotational axis of the crank axle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.