Marine computer
US4327497A · kind A · utility
Inventor
Key dates
| Filing date | Mar 13, 1980 |
| Grant date | May 4, 1982 |
| Priority date | — |
| Expiry date | Mar 13, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A graphic vector plotting instrument, particularly suited for marine navigational computations. A cursor disk is surrounded by a concentric compass disk, and both are rotatable about their common center. The cursor disk has a pair of perpendicular cursor lines which intersect at the common center and a plurality of other parallel cursor lines. The compass disk has a 360.degree. compass rose scale thereon. A transparent plotting slide is slidable over the cursor disk and the compass disk and contains scaled markings permitting the plotting and solution of navigational vector problems thereon without the aid of other devices or surfaces or charts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.