Bicycle freewheel
US3972245A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1974 |
| Grant date | Aug 3, 1976 |
| Priority date | — |
| Expiry date | Aug 20, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M9/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
There is disclosed a Derailleur block comprising a sleeve adapted to be secured to a bicycle wheel hub, a sprocket carrier mounted on the sleeve with interposed ball races and free wheeling mechanism, and a number of sprockets having different numbers of teeth secured in axially spaced relationship on the carrier. At one end of the block there is a cone for adjusting the ball-race clearances in co-axial screw threaded engagement in the carrier, and in screw-threaded engagement with the protruding end of the cone, there is a lock nut. The lock nut serves not only to secure the cone after adjustment, but as an abutment for the sprocket assembly which is thereby readily removable. Both cone and lock nut are accessible for manipulation externally of the block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.