Light weight bicycle with improved chainstay structure and method
US4621827A · kind A · utility
16Cited by
4References
6Claims
0Family size
Inventor
Key dates
| Filing date | Feb 2, 1984 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Feb 2, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K19/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The two chainstay tubes of a bicycle are made of tubing of unequal rigidity, specifically the chainstay tube on the chain or drive side is made heavier, while, in the preferred embodiment, the other chainstay tube is lightened, in order to increase power train efficiency by reducing the magnitude of frame deflection caused by chain stress. In the preferred embodiment, the metal that is added to the chain side chainstay tube is taken from the non-drive side so that there is no net addition of weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.