Wireless velocity detector for a bicycle having a rotating AC magnetic field and receiver coils
US5177432A · kind A · utility
53Cited by
25References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1991 |
| Grant date | Jan 5, 1993 |
| Priority date | — |
| Expiry date | May 31, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/48
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A wireless velocity detector for a bicycle includes a coil mounted on the wheel hub of the bicycle which generates a rotating magnetic field as the wheel rotates, a receiver mounted on the handlebars that includes a pair of coils that sense variations in the strength of the rotating field as the bicycle moves and generates signals in response to the field variations and a microprocessor which converts the signals into information related to the movement of the bicycle, e.g. speed and distance. A liquid crystal display is used to display the information to the cyclist.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.