Magnetic bicycle chain retention mechanism
US9580143B2 · kind B2 · utility
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0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2015 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Sep 1, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H55/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus for driving a drive chain, such as on a bicycle, may include a chainring having teeth arranged around a circumference of the chainring, and one or more magnetic portions disposed adjacent to the teeth of the chainring. The one or more magnetic portions may be disposed on the chainring and/or on a frame to which the chainring is rotatably coupled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.