Sonar systems
US4897824A · kind A · utility
5Cited by
9References
8Claims
0Family size
Inventor
Key dates
| Filing date | Feb 9, 1989 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | Feb 9, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/521
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sonar system for a water craft including a transducer assembly mounted to the hull of the water craft, and a control circuit for applying signals to the transducer for forward transmission by the transducer and for sensing signals reflected from objects forwardly of the craft and for causing actuation of an alarm. The transducer assembly is mounted for pivotal movement relative to the hull such that during pitching motion of the craft, the signals transmitted by the transducer remain in a horizontal plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.