Abstract: A device for acoustic wave treatment has an open elongated vessel, whose cross-section tapers progressively towards an opening on the top of said vessel, and a piezoelectric element. The vessel is filled with a liquid and the piezoelectric element emits waves into the liquid. The waves are focused near the opening of the vessel and emerge in a duct.

Abstract: A device for treatment by high frequency sound waves that has at least one enclosure and at least one ultrasound transducer and methods for cleaning foodstuffs in the device. The waves produced by the ultrasound transducer in the enclosure filled with a cleaning liquid have a frequency greater than 100 kHz, preferably greater than 200 kHz.

Abstract: The invention relates to a device (100) for nebulizing a liquid, comprising: a vessel (110) that is open at the top portion thereof and configured so as to contain the liquid to be nebulized; at least two ultrasonic-wave generators (120, 130) for emitting at least two ultrasonic-wave fronts (122, 132) into the liquid; and at least two means (134, 124) for focusing the ultrasonic waves, each of which engages with one of said generators (120, 130) in order to concentrate ultrasonic waves at a single point P less than ten millimetres from the free surface of the liquid, wherein the vibration frequencies of the two wave fronts (122, 132) are different.

Abstract: Device for desalinating sea water comprising a unit (10) for spraying sea water in the form of droplets, a unit (20) for vaporizing the droplets into steam, a unit (30) for separating steam from salt particles, and a unit (40) for condensing steam into fresh water. The spraying unit comprises a sea water entry (12), an ambient-temperature dry air entry (14), and a device for generating acoustic waves at a frequency greater than 1 MHz focused by means of nozzles (17) receiving the sea water coming from the sea water entry so as to obtain microdroplets having a diameter comprised between about 2.5 microns and about 5 microns.

Abstract: Device for desalinating sea water comprising a unit (10) for spraying sea water in the form of droplets, a unit (20) for vaporizing the droplets into steam, a unit (30) for separating steam from salt particles, and a unit (40) for condensing steam into fresh water. The spraying unit comprises a sea water entry (12), an ambient-temperature dry air entry (14), and a device for generating acoustic waves at a frequency greater than 1 MHz focused by means of nozzles (17) receiving the sea water coming from the sea water entry so as to obtain microdroplets having a diameter comprised between about 2.5 microns and about 5 microns.

Abstract: Embodiments of the invention are directed to substrate processing apparatuses and methods for processing substrates. In one embodiment, a substrate processing apparatus includes a processing chamber, a substrate holder inside of the processing chamber for holding a substrate, and a sonic box in the processing chamber for supplying sonic waves substantially perpendicularly to the substrate. The sonic box may comprises a membrane, and a transducer coupled to the membrane.

Abstract: Embodiments of the invention are directed to substrate processing apparatuses and methods for processing substrates. In one embodiment, a substrate processing apparatus includes a processing chamber, a substrate holder inside of the processing chamber for holding a substrate, and a sonic box in the processing chamber for supplying sonic waves substantially perpendicularly to the substrate. The sonic box may comprises a membrane, and a transducer coupled to the membrane.

Abstract: Embodiments of the invention are directed to substrate processing apparatuses and methods for processing substrates. In one embodiment, a substrate processing apparatus includes a processing chamber, a substrate holder inside of the processing chamber for holding a substrate, and a sonic box in the processing chamber for supplying sonic waves substantially perpendicularly to the substrate. The sonic box may comprises a membrane, and a transducer coupled to the membrane.

Abstract: Embodiments of the invention are directed to substrate processing apparatuses and methods for processing substrates. In one embodiment, a substrate processing apparatus includes a processing chamber, a substrate holder inside of the processing chamber for holding a substrate, and a sonic box in the processing chamber for supplying sonic waves substantially perpendicularly to the substrate. The sonic box may comprises a membrane, and a transducer coupled to the membrane.

Abstract: A liquid spraying device including an elongate first vessel closed at one of its ends by a first free face of a piezoelectric transducer capable of emitting waves into a liquid filling the vessel, and open at its end remote from the piezoelectric transducer. The piezoelectric transducer includes a second free face opposite its first free face, and wherein an elongate second vessel is disposed symmetrically to the first vessel relative to the piezoelectric transducer, the second vessel being closed at one of its ends by said second free face of the piezoelectric transducer, which is thus also capable of emitting waves into a liquid filling the second vessel, said second vessel being open at its end remote from the piezoelectric transducer.

Abstract: The invention relates to a spraying device including a tank which is open at its upper part, capable of containing a liquid to be sprayed, such as water, while being filled up to its opening, a piozoelectric element capable of emitting waves into the liquid and fan means for creating a circulation of air in the vicinity of the surface of the liquid. The waves are focused in the vicinity of the opening of the tank, and the cross-section of the tank (1) has a progressive constriction towards the opening (2) of the tank (1).

Abstract: A distribution network of electric signals in a piezoelectric or ultrasonic waves motor, is produced by depositing electrodes of conductive material on one face of a strip in dielectric material, that on the other face of the strip conductive tracks are deposited according to an interconnection diagram, designed beforehand to supply the piezoelectric elements with proper voltage. Drillings are made through the strip between the conductive tracks and the electrodes, and through plating or deposit of conducting material, these drillings are made conductive.

Abstract: A flowmeter comprises a chamber having a rotational symmetry about an axis, provided with a tangential fluid inlet and an axial outlet. The outlet and inlet means cooperate for generating a vortex upon circulation of fluid through the chamber; a speed detector comprises at least one transmitting thermo-element and one receiving thermo-element angularly spaced about the said axis and located in a zone where the circumferential speed of the vortex is proportional to the flow rate.