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

Underwater Type

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

04/25/13 - 20130100777 - Source for marine seismic acquisition and method
Method, source and seismic vibro-acoustic source element configured to generate acoustic waves under water. The seismic vibro-acoustic source element includes an enclosure having first and second openings; first and second pistons configured to close the first and second openings; an actuator system provided inside the enclosure and configured to actuate...

12/20/12 - 20120320713 - Ultrasonic transducer for use in a fluid medium
An ultrasonic transducer for use in a fluid medium includes at least one housing having at least one inner space, at least one transducer core accommodated in the inner space, having at least one electroacoustic transducer element. The housing has at least one opening facing the fluid medium. The opening...

05/10/12 - 20120113755 - Inter-diver signaling device and process
Taps on a beam-interrupt button of an underwater signaling transceiver are encoded as binary frequency shift-key modulated Golay codes, which are transmitted via 56-58 kHz compression waves generated by a ring-shaped electromechanical transducer. Light emitting diodes flash to signal the content of received signals and provide monitoring of the distance...

12/15/11 - 20110305115 - Underwater wireless sensor
An underwater wireless sensor is provided. The underwater wireless sensor comprises a floating-diving device enabling the underwater wireless sensor to dive to a first predetermined water depth in response to a predetermined condition; a sensing device converting a plurality of environmental parameters into a plurality of environmental messages; a micro...

08/04/11 - 20110188350 - System and method for depth determination of an impulse acoustic source
A system and method for making an accurate estimate of the activation depth for an impulse acoustic source includes recording sounds produced by the activation of the underwater impulse acoustic source over a time period sufficient to capture reverberation, performing a cepstral scan of the recording to determine a quefrequency...

12/30/10 - 20100329083 - Submarine antenna
The invention relates to a submarine antenna to be attached to the hull of a submarine, said antenna comprising a planar converter arrangement (15) which extends along the hull (11) when attached and which has a reflector (21) and a plurality of electroacoustic converter elements (20). Said converter elements are...

02/18/10 - 20100039900 - Volumetric displacement transducer for an underwater acoustic source
A volumetric displacement transducer is provided for generating acoustic signals. The transducer housing incorporates at least one pair of opposed plates mounted for radial vibration. A driving mechanism is coupled to the opposed plates for driving the plates simultaneously in opposition to each other at a desired frequency, whereby an...