Safe quick-release bicycle axle fastener
US6260931A · kind A · utility
Inventor
Key dates
| Filing date | Sep 23, 1997 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Sep 23, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K2206/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A quick-release bicycle axle fastener comprising a lever-operated cam which presses a follower disc inward against the outer surface of a conventional safety dropout. The dropout has an outer surface with retention means for the disc, such as a concavity, tab, or ridge. A spring urges the cam lever toward its dosed position. If the cam is left open by the user, the spring causes it to hold the follower against the retaining surface of the dropout, preventing accidental release of the axle. This safety feature is constant, automatic, and convenient. No action is needed beyond normal operation of the lever. The cam provides full clearance for releasing the axle, so the adjustment nut is only needed for initial installation, not for operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.