Electronically controlled bicycle transmission
US4605240A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1983 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Aug 18, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/489
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic/electromechanical transmission shifter has a velocity detector which generates an electrical signal representing the vehicle velocity. A microcomputer is connected to the velocity detector, to a plurality of manually controlled switches and to a digitally controlled linear actuator which is linked to the shift member of the vehicle. The shifter position is detected by a cam mounted on the screw shaft of the linear alternator operating against a plurality of microswitches which are mounted about and axially spaced along the screw shaft. The cam follower portions of the microswitches are engagable with the cam to indicate shifter position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.