Bicycle sprocket
US7824287B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2005 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Jun 15, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M9/105
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bicycle sprocket is provided that has a sprocket ring part, a synthetic resin fastening part and at least one attachment part. The synthetic resin fastening part is non-movably coupled to the sprocket ring part at a location radially inwardly of the sprocket teeth relative to the rotation axis. The least one attachment part is at least partially embedded within the synthetic resin fastening part. The attachment part includes a connecting portion and a radial projecting portion extending outwardly from the connecting portion to space the connecting portion radially inward of the sprocket ring part. The attachment part is formed as a separate member from the sprocket ring part and the synthetic resin fastening part. The synthetic resin fastening part facilitates weight saving, while the attachment part prevents the reduction of fastening power (strength) due to deterioration or deformation of the synthetic resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.