Bicycle chainring
US7686721B2 · kind B2 · utility
70Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2005 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Apr 24, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M9/105
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bicycle chainring is formed from a first member and an second member. The first member includes a center rotational axis, a crank attachment portion with a plurality of chainring attachment openings and an annular tooth portion with a plurality of chain engaging gear teeth. The second member disposed around the center rotational axis and is fixedly attached to overlie at least one of the crank attachment portion and the annular tooth portion to reinforce the first member without obstructing access to the chainring attachment openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.