Force assist compass
US8806768B1 · kind B1 · utility
1Cited by
14References
7Claims
0Family size
Inventor
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Mar 9, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C17/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A marine navigation compass-protractor having a transparent base and a three-hundred sixty degree (360°) directional scale on a top surface is disclosed. The transparent base allows it to be placed on a map while still viewing map details. The center of the compass protractor has a plurality of rotating arms that numerically depict the direction and engine thrust characteristics of marine vessels jointly performing navigational tasks. Another arm provides a bearing/heading indication. The marine navigation compass-protractor enables an operator of a marine vessel better perform navigational decisions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.