Electroacoustic transducer
US4541081A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1982 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Feb 25, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/912
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved transducer for generating and receiving acoustic energy. A transducer core is constructed by bonding together a plurality of concentric cylinders to provide a ferromagnetic core. A magnetic vector is established circumferentially about the core by passing a current through an electrical winding, wound torridially about the core. A pulsed current source connected across the core provides a high-magnitude, short-duration pulse output establishing current flow from one end to the other end of all of the concentric cylinders. Current flow within the magnetic field causes a force vector and magnetic vector creating a pressure wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.