Free-wheel hub transmission mechanism
US6244405A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1999 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Dec 2, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60B27/047
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A free-wheel hub transmission mechanism includes an axle coaxially inserted into a through hole of a spoke mounting barrel such that a right axle portion thereof extends outwardly from the spoke mounting barrel. A drive transmission block is disposed in the right end portion and has a force transmitting portion with first and second bevel faces. A sprocket mounting barrel is disposed around the right axle portion, and has a drive portion formed with a third bevel face for contacting the first bevel face. A clutch barrel is disposed around the axle, and has a coupling part threaded to the drive portion of the sprocket mounting barrel, and a block contacting part formed with a fourth bevel face for contacting the second bevel face. The clutch barrel is linearly displaceable relative to the axle to a driving position, where the clutch barrel cooperates with the sprocket mounting barrel to clamp the drive transmission block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.