Bicycle crank assembly
US9771128B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2011 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | Jan 20, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2165
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bicycle crank assembly is provided with a first sprocket, a second sprocket, a crank arm, a sprocket fixing structure and an alignment tube. The first sprocket includes a plurality of first teeth and at least one first mounting portion having a first mounting opening. The second sprocket includes a plurality of second teeth and at least one second mounting portion having a second mounting opening. The crank arm includes at least one sprocket attachment portion having a third mounting opening. The sprocket fixing structure secures the first and second sprockets to the crank arm via the first, second and third mounting openings. The alignment tube extends through at least two of the first, second and third mounting openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.