Watch comprising an arrangement for detecting the direction of the terrestrial magnetic north
US5596551A · kind A · utility
25Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1995 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Nov 7, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C17/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Watch comprising an arrangement for detecting the direction of the terrestrial magnetic north formed by a permanent magnet and at least two magnetic sensors (34, 36) arranged for detecting the flux of the magnetic field of the magnet. The watch moreover comprises electronic management and control means serving, as a function of the signals coming from the two sensors, to control indicating means (16) arranged so as to indicate either a selected geographic azimuth or the direction of a predefined locality, in particular Mecca.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.