Free-wheel hub transmission mechanism
US6264285A · kind A · utility
Inventor
Key dates
| Filing date | Feb 25, 2000 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Feb 25, 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 coaxially inserted into a through hole in a spoke-mounting barrel such that a right axle portion thereof extends outwardly from the spoke mounting barrel. The sprocket mounting member is sleeved around the right axle portion, and includes an inner shell disposed rotatably within an outer shell around the right axle portion. The central bore of the inner shell has a small-diameter outer section, a large-diameter inner section, and a shoulder therebetween. A locking member is disposed within the inner shell, and has an enlarged right end section that is disposed in the large-diameter inner section and that has an outer diameter greater than the diameter of the small-diameter outer section of the central bore for preventing removal of the locking member from the inner shell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.