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Communications, Electrical: Acoustic Wave Systems And Devices > Signal Transducers > Underwater Type > Piezoelectric

Piezoelectric

Piezoelectric patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

01/30/14 - 20140029386 - Apparatus and methods of tuning and amplifying piezoelectric sonic and ultrasonic outputs
An apparatus and method associated with amplifying piezoelectric sonic and ultrasonic outputs is presented which provides high power output from piezoelectric devices, especially at high ultrasonic frequencies, in open air, which mitigates or eliminates overheating of the piezoelectric devices when stimulated at or near their peak outputs for extended periods....

10/03/13 - 20130258814 - Ultrasound system and method of manufacture
An ultrasound system and a method of manufacturing an ultrasound system comprising a base comprising a bore; a prismatic segment, coupled to the base, that defines a set of surfaces surrounding the bore; a set of ultrasound transducer panels configured to emit ultrasound signals in a radial direction, each ultrasound...

05/09/13 - 20130114378 - Widebeam acoustic transducer
An acoustic transducer for producing sonar waves features a piezoelectric structure with a radiating surface. A plurality of elements is attached to the radiating surface, and at least two of the plurality of elements have different acoustic properties. The acoustic transducer is designed for a wider beam angle for a...

08/23/12 - 20120213036 - Electroacoustic transducer, in particular transmitting transducer
An electroacoustic transducer, in particular a transmitting transducer for sonar systems, is disclosed, comprising two end caps that are arranged at a fixed distance from each other, multiple bars which are braced between the two end caps and the ends of which are attached to the end caps next to...

06/28/12 - 20120163131 - Mono-directional ultrasound transducer for borehole imaging
Devices and methods to generate a mono-directional ultrasonic wave are provided. An ultrasonic sensor configured to emit a substantially mono-directional ultrasonic wave includes a first piezoelectric element and a second piezoelectric element. The first piezoelectric element is configured to generate a first ultrasonic wave propagating in a first direction and...

10/20/11 - 20110255375 - Acoustic wave transducer and sonar antenna with improved directivity
The invention relates to an acoustic wave transducer that includes at least one electroacoustic motor (1, 21), a horn (4, 24) having an inner wall and an outer wall, a counterweight (5), and a hollow housing (8, 28) having an inner wall and an outer wall and at least one...

03/31/11 - 20110075520 - Seismic source which incorporates earth coupling as part of the transmitter resonance
An acoustic energy source for imparting acoustic energy into the Earth's subsurface includes an electrically driven transducer coupled to a source of swept frequency alternating current. A tunable Helmholtz resonator is disposed proximate the transducer. In one example, the resonator has a tuning device configured to maintain a resonant frequency...

02/03/11 - 20110026366 - Water inflatable volumetric hydrophone array
A hydrophone array includes an inflatable shaped housing enclosing an interior space and formable between a collapsed configuration and an expanded configuration, a framework of compliant material disposed within the interior of the inflatable housing, and a plurality of hydrophones attached to the compliant material at respective positions, wherein said...

12/10/09 - 20090303838 - Acoustic sensor and method
The invention relates to a sensor apparatus (30) operable to receive and process acoustic signals. The sensor apparatus comprises at least one acoustic transducer (32) operative to produce a change in an electronic output signal in response to receipt of an acoustic signal by the acoustic transducer. The sensor apparatus...

10/15/09 - 20090257317 - Macrosonic generator for the air-based industrial defoaming of liquids
This invention refers to a sonic and/or ultrasonic generator for emission in air with a power capacity and certain radiation characteristics which permit the necessary acoustic levels (>170 dB ref. 2·10−4 μbar) to be obtained in a way that is safe and controlled for the mechanical breakage of high consistency...