Dual system bicycle
US4726600A · kind A · utility
Inventor
Key dates
| Filing date | Jul 29, 1986 |
| Grant date | Feb 23, 1988 |
| Priority date | — |
| Expiry date | Jul 29, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20792
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A dual system bicycle for hand and foot propelling operations including a handle device with a front link mechanism operatively installed on top of a front fork member fixed on a front wheel of a bicycle, and a lever device with a rear link mechanism movably connected between the front link and a pedal system installed in a lower portion of a frame structure and in the rear wheel through a chain wheel arrangement of the bicycle; thereby, the rider can use both hands and feet for propelling the bicycle, improving his bodily fitness and increasing the moving speed of the bicycle. Alternatively, the dual system bicycle can be easily changed into an ordinary bicycle mode for foot propulsion only.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.