Bicycle chain rings with ramps
US8821329B2 · kind B2 · utility
9Cited by
3References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2013 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Aug 13, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H55/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Embodiments of the present invention include bicycle chain rings for bicycles having specially shaped ramps with lifting surfaces for improved up-shifting performance. Additional embodiments of the bicycle chain rings of the present invention may be configured with one or more additional features formed within the chain rings including a transition slide, a tapered ramp face, a ramp bridge, a ramp lead, a trailing transition slide and a wear pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.