序号 | 专利名 | 申请号 | 申请日 | 公开(公告)号 | 公开(公告)日 | 发明人 |
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241 | DIRECTED ACOUSTIC STICK RADIATOR | EP97950693.0 | 1997-11-25 | EP0963681A2 | 1999-12-15 | RAIDA, Hans-Joachim; BSCHORR, Oscar, Friedrich |
An elongate acoustic radiator consisting of an exciter (11), that propagates mechanical waves directly or by an adapter (12) to a mechanical waveguide. Therefore mechanical waves travel along the waveguide axed with wave velocity cw. The waves cause local displacement of transformer elements (14) coupled to the waveguide that are transformed into acoustical radiation. The waveguide is terminated with an impedance termination. Local sound radiations interfere and direct inphase radiation follows. The input impedance, the directivity characteristic, the areas of the same phase and the efficiency of the radiation can be adjusted by the points of excitation, the wave velocity, the length of the waveguide, the amplitudes of displacement, the properties of the transformer and the impedance termination. The volume of the enclosure is adjusted by the properties of the waveguide and the transformer. The device can be used as a signaling device, for speech, music or as a microphone. | ||||||
242 | Schallwandlersystem | EP98124257.1 | 1998-12-18 | EP0927987A2 | 1999-07-07 | Pfeiffer, Helmut; Flögel, Karl; Klotz-Engmann, Gerold, Dr. |
Das Schallwandlersystem enthält eine Biegeschwingerplatte, die mit einem elektromechanischen Wandler gekoppelt und so ausgebildet ist, daß sie bei der Systembetriebsfrequenz zu Biegeschwingungen höherer Ordnung angeregt wird, bei denen sich auf der Biegeschwingerplatte Knotenlinien ausbilden, zwischen denen abwechselnd gegenphasig schwingende erste und zweite Schwingungsbauchzonen liegen. Zur Beeinflussung der Schallabstrahlung ist in den zueinander gleichphasig und zu den ersten Schwingungsbauchzonen gegenphasig schwingenden zweiten Schwingungsbauchzonen auf der dem Übertragungsmedium abgewandten Rückseite der Biegeschwingerplatte jeweils ein Massering konzentrisch zum Mittelpunkt der Biegeschwingerplatte angebracht. Infolge der vergrößerten Masse schwingen die zweiten Schwingungsbauchzonen mit wesentlich kleinerer Amplitude als die ersten Schwingungsbauchzonen, so daß sich die von den ersten und zweiten Schwingungsbauchzonen erzeugten gegenphasigen Schallwellen nicht vollständig gegenseitig kompensieren können. Dadurch entsteht ein Strahlungsdiagramm mit ausgeprägter Richtwirkung in der Richtung senkrecht zur Biegeschwingerplatte. |
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243 | Schall- oder Ultraschallsensor | EP97105884.7 | 1997-04-10 | EP0807924A3 | 1999-06-02 | Eckert, Manfred; Flögel, Karl |
Es ist ein Schall- oder Ultraschallsensor zum Senden und/oder Empfangen von Schall oder Ultraschall vorgesehen, der mechanisch robust und chemisch beständig ist und der eine einstellbare Abstrahlcharakteristik aufweist, z.B. mit einem vorzugweise geringen Öffnungswinkel aufweist, |
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244 | Acoustic transducer | EP93306906.4 | 1993-09-01 | EP0590799B1 | 1998-03-25 | Cherek, Bogdan |
245 | ULTRASCHALLGEBER BZW. -GENERATOR | EP96900234.0 | 1996-01-16 | EP0806031A1 | 1997-11-12 | KELLER, Hans-Peter |
A first embodiment of the proposed ultrasonic generator (1) has an oscillation head (2) of circular cross-section. The face (3) of the oscillation head (2) facing the cleaning fluid is convex. Owing to the refraction behaviour of ultrasonic waves, this shape increases the angle of diffusion of the ultrasonic waves. The surface of the convex face (3) may be smooth, continuous or stepped. The stepped surface helps reduce reflection at the boundary layer between the oscillation head (2) and the cleaning fluid. The oscillation head (2) has a cylindrical recess in the second face into which is inserted a piezoelectric ultrasound transducer (9). A second embodiment of the proposed ultrasonic generator (1) has a plurality of needle-shaped transmission components running parallel to one another and projecting at right angles downwards from a supporting plate. The proposed ultrasonic generator (1) is secured to the bottom or a side wall of a vat. | ||||||
246 | Procédé d'émission de forte puissance d'ondes acoustiques et pavillons de transducteurs correspondants | EP94402687.1 | 1994-11-24 | EP0656232B1 | 1997-02-12 | Scarpitta, Alain; Boucher, Didier; Wintz, Thierry |
247 | A PASSIVE SENSOR SYSTEM USING ULTRASONIC ENERGY | EP95908696.0 | 1995-01-27 | EP0741873A1 | 1996-11-13 | KAPLAN, Shay |
A passive sensor system (14) utilizing ultrasonic energy is disclosed. The passive sensor system includes at least one ultrasonically vibratable sensor (10) and an ultrasonic activation and detection system (20, 22, 24, 25). The sensor (10) has at least one vibration frequency which is a function of a physical variable to be sensed. The ultrasonic activation and detection system (20, 22, 24, 25) excites the sensor and detects the vibration frequency from which it determines a value of the physical variable. The sensor includes (see fig.2-4) a housing, a membrane which is attached to the housing and which is responsive to the physical variable, a vibratable beam attached to the housing at one end and a coupler, attached to the membrane and to a small portion of the vibratable beam, which bends the vibratable beam in response to movement of the membrane. | ||||||
248 | Acoustic transducer | EP93306906.4 | 1993-09-01 | EP0590799A3 | 1995-03-15 | Cherek, Bogdan |
A flexural mode acoustic transducer system for use in pulse-echo ranging systems has a radiating plate (2) of which even-numbered antinodal zones (A2, A4, A6, A8), counting from a drive connection (4) to a driving element (10) at the centre of the plate, are formed with rings of apertures (40) to reduce the radiating areas of those zones, thus reducing cancellation in the far field, and improving the matching of the device to the atmosphere into which the plate is radiating. The plate is backed by a sound deadening layer (32) on a flange (30) of a transducer housing (22), from which it is separated by a foil (34) which is non-adherent to the plate, and is preferably covered by an acoustically transparent fabric having a pore size small enough to exclude damaging particulates. |
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249 | Ultrasonic wave generator and floating or suspended particle collecting apparatus using the same | EP93200049.0 | 1993-01-08 | EP0551162A3 | 1994-04-20 | Yamane, Hiroyuki |
An ultrasonic wave of high sound pressure which implements high dust collection effect is generated, and floating or suspended particles such as dust are effectively removed using the ultrasonic wave. A floating or suspended particle collecting apparatus includes a hollow pipe (1) into which fluid (W) containing floating or suspended particles is introduced, a cylindrical diaphragm (2) which is disposed inside of the pipe (1), and whose dimension is set in such a manner that a sound field generated inside of the diaphragm (2) when the diaphragm (2) is resonated at a natural frequency thereby keeping in a resonant state, and an ultrasonic driving source (3) for resonating the diaphragm (2) at the natural frequency to radiate ultrasonic waves from the diaphragm (2). The floating or suspended particles are collected by the strong ultrasonic waves generated in the floating or suspended particle collecting apparatus. |
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250 | Procédé et dispositif de décapage des rives d'une tôle laminee à chaud | EP92402641.2 | 1992-09-25 | EP0543685A1 | 1993-05-26 | Nogues, Michel |
Ce dispositif comprend un émetteur d'ultrasons (4) dont l'extrémité inférieure (5) est immergée dans la solution réactive (2) dans laquelle est plongée une tôle (3) à décaper, et cette extrémité est équipée de deux pavillons (6, 7) positionnés de part et d'autre d'une rive de la tôle (3) avec leurs surfaces émettrices planes parallèles à la tôle et situées dans deux plans antinodaux; de ce fait les deux pavillons (6, 7) vibrent en opposition de phase, et si l'amplitude vibratoire est suffisamment élevée, ces vibrations créent une cavitation dans le liquide, dans l'espace intercalaire entre les surfaces (3a, 3b) de la rive et les pavillons (6, 7), ce qui accélère considérablement la vitesse de décalaminage de la rive. |
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251 | ULTRASCHALLWANDLER | EP91912434.0 | 1991-07-23 | EP0507892A1 | 1992-10-14 | RAPPS, Peter; KNOLL, Peter; PACHNER, Franz; NOLL, Martin; FISCHER, Michael |
On propose plusieurs exemples de réalisation pour un transducteur ultrasonore, dans lesquels, par des mesures d'atténuation appropriées, l'angle de propagation du son dans le plan vertical est étroit et large dans le plan horizontal. L'influence sur la caractéristique de propagation est due à la conception, selon l'invention, de la membrane oscillatrice et/ou du boîtier ainsi que par des dispositions multiples d'oscillateurs piézoélectriques. Grâce à ces mesures, l'atténuation des ondes sonores et la sensibilité du capteur sont approximativement de même grandeur sur toute l'étendue de l'angle horizontal jusqu'à presque 180°. | ||||||
252 | Ultraschall-Resonator | EP90104490.9 | 1990-03-09 | EP0455837B1 | 1992-05-13 | Walter, Martin; Weber, Dieter |
253 | Dispositif de nettoyage de pièces mécaniques par ultrasons | EP86400820.6 | 1986-04-16 | EP0205355B1 | 1991-10-16 | Imbault, Jean-Jacques; Lefevre, Bernard |
254 | ELECTROACOUSTIC UNIT FOR GENERATING HIGH SONIC AND ULTRASONIC INTENSITIES IN GASES AND INTERPHASES | EP90915472.6 | 1990-10-03 | EP0450030A1 | 1991-10-09 | GALLEGO JUAREZ, Juan Antonio; RODRIGUEZ CORRAL, Germán; SAN EMETERIO PRIETO, José Luis; MONTOYA VITINI, Fausto Instituto de Teledeteccion |
New electroacoustic unit for the efficient generation of high sonic and ultrasonic intensities in gas media and in interphases (gas-solid, gas-liquid). Said unit is comprised of an electromechanical transducer system of which the radiating element is a plate (3) having a discontinuous profile and an electronic device for the controlled generation of the electric power signal. The unit is capable of generating acoustic fields of very high intensity with a predetermined configuration. Particularly it is capable of generating with a same transducer system two distinct configurations of the acoustic field. Prototypes for generating directional and focused fields have been developed. |
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255 | Micromechanic sound generator | EP89102836 | 1989-02-18 | EP0336086A3 | 1991-08-07 | KROY, WALTER, DR.; SEIDEL, HELMUT, DR.; BSCHORR, OSKAR, DR. |
Es wird ein Schallerzeuger beschrieben, bei dem eine Anzahl von Mikro- Membranen in ein Substrat in vorbestimmter Anordnung direkt einzeln, parallel oder seriell ansteuerbar sind. Mittels der Einstellung einer bevorzugten Abstrahlrichtung der Schall signale wird die Richtcharakteristik bestimmt. Bevorzugte Anwendungen, Herstellverfahren und Ausgangsmaterialien sind ebenso angegeben, wie einige Ausbildungen und Abwandlungen einschließlich Integrationsmöglich keiten. | ||||||
256 | Focal sonic or ultrasonic radiator to apply to high-intensity fluids | EP89500014.9 | 1989-02-03 | EP0327486A3 | 1990-08-29 | Juárez, Gallego J.A.; Corral, Rodr guez G. Instituto de Ac stica; Prieto,San Emeterio J.L. |
The object of the present patent application is a new type of radiator for sonic and/or ultrasonic frequencies consisting basically of a plate which has discontinuous profiles on both surfaces and which vibrates flexurally on excitation by a vibrator that may be piezoelectric, magnetostrictive, etc. in nature. The dual discontinuous profiles enable regulation of the amplitude and phase of the energy radiated, thereby achieving a high concentration of energy around a predetermined point. |
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257 | Non-directional ultrasonic transducer | EP87305864.8 | 1987-07-02 | EP0251797A3 | 1989-09-13 | Inoue, Takashi; Konno, Masashi |
A transducer is comprised of a piezoelectric ceramic cylindrical vibrator vibrating radially, and a sheet provided on an outer peripheral surface of the cylindrical vibrator and including a fiber reinforced composite material with fibers oriented only in the direction of central axis of the cylindrical vibrator. Non-piezoelectric cylinder consisting of Aℓ alloy or Mg alloy may be usable instead of the sheet. Another type of transducer includes a cylindrical piezo-transducer vibrating radially, a cylindrical sound radiator with the central axis coincident with the cylindrical piezo-transducer, and a bending coupler provided at a predetermined interval on end surfaces of the two cylinders and coupling the cylindrical piezo-transducer and the cylindrical sound radiator. Other type of transducer is comprised of a cylindrical piezo-transducer vibrating radially, an outside cylindrical sound radiator with its central axis coincident with the central axis of the cylindrical piezo-transducer which contains the piezo-transducer therein, and a coupler extending radially from an outer peripheral surface of the cylindrical piezo-transducer to an inner peripheral surface of the cylindrical sound radiator, thereby coupling both the two. |
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258 | Focal sonic or ultrasonic radiator to apply to high-intensity fluids | EP89500014.9 | 1989-02-03 | EP0327486A2 | 1989-08-09 | Juárez, Gallego J.A.; Corral, Rodr guez G. Instituto de Ac stica; Prieto,San Emeterio J.L. |
The object of the present patent application is a new type of radiator for sonic and/or ultrasonic frequencies consisting basically of a plate which has discontinuous profiles on both surfaces and which vibrates flexurally on excitation by a vibrator that may be piezoelectric, magnetostrictive, etc. in nature. The dual discontinuous profiles enable regulation of the amplitude and phase of the energy radiated, thereby achieving a high concentration of energy around a predetermined point. |
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259 | Ultraschallwandler mit astigmatischer Sende-/Empfangscharakteristik | EP88115593.1 | 1988-09-22 | EP0308931A2 | 1989-03-29 | Möckl, Thomas, Dipl.-Phys. |
Wandler, dessen astigmatische Richtcharakteristik auf radial unsymmetrischer Steifigkeit bzw. Schallgeschwindigkeit des Materials der schwingenden Membran (2) beruht, die aus einem Faser-Verbundwerkstoff besteht. |
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260 | Diaphragm for producing sound | EP87115091.8 | 1987-10-15 | EP0264830A3 | 1989-02-15 | Hayashi, Akira |
A diaphragm for producing sound includes at least one layer of a union fabric woven from a plurality of yarn filaments of plural kinds. The plural kinds of the yarn filaments have elongations different from each other. The plural kinds of the yarn filaments are arranged in a predetermined regular order in both warp and weft directions. |