Incrementally variable transmission
US4717369A · kind A · utility
2Cited by
2References
2Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Oct 27, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Oct 27, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M9/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An incrementally variable transmission, particularly suitable for a bicycle, having a variable-sprocket mounted on an axle having crank-arms. The variable-sprocket comprises a drive-flange and a indexing-flange, a pair of sprocket-segment-planets and at least a pair of idler-planets connected to the flanges, the planets adapted to expand and contract in response to a relative rotation of the flanges and thereby increase and decrease, respectively, the effective diameter of the variable-sprocket, and the sprocket-segment-planets are arranged along an imaginary line defined by said crank-arms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.