Electronic hub odometer
US4697278A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1985 |
| Grant date | Sep 29, 1987 |
| Priority date | — |
| Expiry date | Mar 1, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C22/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic hub odometer employs a permanent magnet and a magnetic reed switch for recording the number of revolutions of a vehicle wheel to which the odometer is mounted. A programmable integrated circuit electrically communicates with a clock crystal and the magnetic reed switch to automatically produce data relative to the time, distance and rate of travel of the associated vehicle. The data is stored in a random access memory integrated circuit. An infrared light emitting diode is employed for transmitting the data from the odometer to a remote unit. Information is also transmitted to the odometer from a remote unit via a photo-optical detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.