Gear for bicycles and a freewheel for bicycles including a plurality of such gears
US5066264A · kind A · utility
34Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1990 |
| Grant date | Nov 19, 1991 |
| Priority date | — |
| Expiry date | Nov 21, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M9/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A freewheel for bicycles has a plurality of gears each of which, with the exception of the one with the smallest diameter, has teeth arranged in successive sets of three constituted each by teeth of three different types. A first type of tooth has a face which is recessed relative to the corresponding flat face of the gear. A second type of tooth has a groove formed in the top surface of the tooth and extending circumferentially of the gear. A third type of tooth has a top chamfer on its face situated on the side opposite the recessed face of the first tooth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.