Bicycle
US5873590A · kind A · utility
37Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1997 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Feb 13, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M23/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bicycle is provided with a frame and a drive portion. The frame is at least partially hollow, and at least part of the drive portion is disposed in an interior of the frame. The drive portion includes a crank and a plurality of transmission means, in which one of the transmission means rotates another transmission means at a rotational speed higher than a rotational speed of the crank, which in turn rotates the rear wheel of the bicycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.