Free-wheel hub transmission mechanism
US6260681A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2000 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Mar 16, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D41/28
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hub transmission mechanism includes an axle inserted coaxially into a through-hole in a spoke-mounting barrel such that a right axle portion thereof extends outwardly from the spoke mounting barrel. A sprocket mounting member is sleeved around the right axle portion, and includes an outer shell coupled with a right end of the spoke-mounting barrel, left and right bearing units disposed within the outer shell, a tubular sleeve disposed within the outer shell around the right axle portion and between the bearing units, and a restricting spacer unit disposed within the outer shell and cooperating with the tubular sleeve to restrict radial and axial displacement of the bearing units relative to the outer shell, thereby defining an aligned bore for smooth extension of the right axle portion of the axle during assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.