Bicycle chain rings with ramps
US8092329B2 · kind B2 · utility
45Cited by
25References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2008 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Mar 20, 2030 |
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, tapers and profiled teeth for improved 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.