False phase front acoustic decoy
US4241426A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1964 |
| Grant date | Dec 23, 1980 |
| Priority date | — |
| Expiry date | Feb 12, 1984 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/537
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
1. An acoustical decoy system for protecting a marine carrier vessel from attcking torpedo, comprising in combination: PA1 a marine carrier vessel to be protected, having a longitudinal axis substantially paralleling the direction of travel thereof; PA1 an electrical signal generator disposed in said marine carrier vessel; PA1 a phase shifter disposed in said marine carrier vessel and electrically connected to the output of said electrical signal generator; PA1 a first electroacoustical transducer disposed remotely from said marine carrier vessel on substantially an extension of the longitudinal axis thereof; PA1 a first cable containing electrical conductors effectively interconnecting the output of said phase shifter and the input of said first electroacoustical transducer; PA1 a second electroacoustical transducer disposed more remotely from said marine carrier vessel than the aforesaid first electroacoustical transducer and likewise on substantially an extension of the longitudinal axis of said marine carrier vessel; and PA1 a second cable containing electrical conductors effectively interrconnecting the output of said electrical signal generator and the input of the aforesaid …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.