Bicycle or tricyle
US4826191A · kind A · utility
3Cited by
15References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1987 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Jun 10, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K5/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A velocipede such as a bicycle or tricycle includes a drive sprocket mounted on a frame for adjustment between a plurality of positions defining an arcuate path having an axis of curvature. A second sprocket is rotatably mounted on the axis and is coupled to the drive sprocket by a first chain. A third sprocket is mounted coaxially with and is coupled to the second sprocket for rotation therewith. A fourth sprocket is mounted on the rear wheel and coupled to the third sprocket by a second drive chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.