Bicycle crankset
US6164157A · kind A · utility
Inventor
Key dates
| Filing date | Jul 14, 1999 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Jul 14, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2164
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bicycle crankset includes a chain ring, a sleeve, two bearing sets, two bearings, two fastening nuts, two rubber washers, a retaining washer, a tightening nut, and a crank arm provided with outer threads. The crankset is mounted on the crank arm by the sleeve in conjunction with the retaining washer and the tightening nut which is engaged with the outer threads of the crank arm. The two fastening nuts are provided with a circular groove for retaining the rubber washer which is semicircular in its cross section and is provided at both edges on the flat side with an angled corner to facilitate the inserting of the rubber washer into the circular groove of the fastening nuts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.