Class / Patent application number | Description | Number of patent applications / Date published |
181142000 | WAVE GENERATION | 16 |
20080296086 | DIAPHRAGM SURROUND - A surround for supporting a diaphragm used to create acoustic waves includes a rib section extending away from the diaphragm and a membrane section that is supported by the rib section. The membrane section has a thickness in a direction substantially normal to opposing top and bottom surfaces of the membrane section which is substantially thinner than a thickness of the rib section in a direction substantially normal to opposing top and bottom surfaces of the rib section. A restoring force returning the diaphragm to a home position is contributed to more due to deformation of the rib section than to deformation of the membrane section. | 12-04-2008 |
20080308343 | SYSTEM AND METHOD OF ACOUSTIC DOPPLER BEAMFORMING - A system and method for forming acoustic beams is disclosed. One embodiment is an acoustic system configured to generate a plurality of beams non-orthogonal to a transducer array simultaneously with a vertical acoustic beam orthogonal to the array. The acoustic system includes a plurality of transducer elements arranged to form a two-dimensional array and electrically connected into rows in a first dimension and columns in a second dimension. | 12-18-2008 |
20090145686 | PRESSURE WAVE GENERATOR AND PRODUCTION METHOD THEREFOR - A pressure wave generator is provided, which has excellent output stability over time. This pressure wave generator comprises a substrate, a heat generating layer, and a heat insulating layer formed between the substrate and the heat generating layer. A pressure wave is generated in a surrounding medium (air) by a change in temperature of the heat generating layer, which is caused upon energization of the heat generating layer. The heat insulating layer comprises a porous layer and a barrier layer formed between the porous layer and the heat generating layer to prevent diffusion of reactive substances such as oxygen and moisture in the air and impurities into the porous layer. By the formation of the barrier layer, it is possible to prevent a reduction in output of the pressure wave generator caused by a change over time of the porous layer. | 06-11-2009 |
20090229910 | METHOD AND SYSTEM FOR FORMATION OF HIGHLY NONLINEAR PULSES - A method and system supporting the formation and propagation of tunable highly nonlinear pulses using granular chains composed of non-spherical granular systems. Such a method and system may be used to support the creation of tunable acoustic band gaps in granular crystals formed of particles with different geometries (spherical or not) in which the tunability is achieved by varying the static precompression, type of excitation and/or pulse amplitude in the system. | 09-17-2009 |
20100025145 | PRESSURE WAVE GENERATOR AND TEMPERATURE CONTROLLING METHOD THEREOF - A pressure wave generator ( | 02-04-2010 |
20110048842 | System, device and method for providing audible sounds from a surface - A method, system and device for reproducing sound. The device may include an elongated strip of material having a ridge substantially extending the length and width of the elongated strip. The elevation of the ridge may vary along the length of the elongated strip to produce sound when contacted by a wheel of a vehicle travelling substantially along the length of the elongated strip. | 03-03-2011 |
20110048843 | System, device and method for providing audible sounds from a surface - A method, system and device for reproducing sound. The device may include an elongated strip of material having a ridge substantially extending the length and width of the elongated strip. The elevation of the ridge may vary along the length of the elongated strip to produce sound when contacted by a wheel of a vehicle travelling substantially along the length of the elongated strip. | 03-03-2011 |
20110094823 | SOUND WAVE GENERATOR AND METHOD FOR PRODUCING THE SAME, AND METHOD FOR GENERATING SOUND WAVES USING THE SOUND WAVE GENERATOR - A sound wave generator that exhibits more excellent output properties than conventional ones, based on the combination of a base layer and a heat-insulating layer that cannot be expected from conventional techniques is provided. The sound wave generator includes a base layer; a heat-insulating layer disposed on the base layer; and a heat pulse source that applies heat pulses to the heat-insulating layer. The base layer is composed of graphite or sapphire, and the heat-insulating layer is composed of crystalline fine particles containing silicon or germanium. The heat pulse source, for example, is a heat pulse-generating layer that is disposed on the surface of the heat-insulating layer opposite to the base layer and applies heat pulses to the heat-insulating layer. | 04-28-2011 |
20110114413 | THERMOACOUSTIC DEVICE - A thermoacoustic device includes an electrode layer and a sound wave generator. The sound wave generator is disposed on a surface of the sound wave generator. The electrode layer includes a plurality of insulated wires and a plurality of conductive wires. The conductive wires are disposed apart from each other and crossed with the insulated wires. The sound wave generator is electrically connected with conductive wires. | 05-19-2011 |
20120018244 | MEMS-TYPE PRESSURE PULSE GENERATOR - The invention relates to a device for generating or recovering acoustic energy, including:
| 01-26-2012 |
20120181104 | SYSTEM FOR FORMATION OF HIGHLY NONLINEAR PULSES - A system supporting the formation and propagation of tunable highly nonlinear pulses using granular chains composed of non-spherical granular systems. Such a system may be used to support the creation of tunable acoustic band gaps in granular crystals formed of particles with different geometries (spherical or not) in which the tunability is achieved by varying the static precompression, type of excitation and/or pulse amplitude in the system. | 07-19-2012 |
20120247865 | PORTABLE SEISMIC COMMUNICATION DEVICE - A portable seismic communication device is disclosed and described. The device can include a tube, a striker, and an adjustable base. The tube can have a lower portion to support an internal gas pressure and an upper portion which can include a contact anvil oriented at a top end of the tube. The striker can be disposed in the tube and can be displaceable along a length of the tube by the internal gas pressure. The adjustable base can be oriented between the tube and a mine floor and can be extendable and retractable to position the anvil in contact with a mine roof (ceiling), such that the striker impacts the contact anvil when displaced by the internal gas pressure to produce an impact energy wave and the contact anvil transmits the impact energy wave to the strata above the device. | 10-04-2012 |
20140367191 | ACOUSTIC GENERATOR, ACOUSTIC GENERATION DEVICE, AND ELECTRONIC DEVICE - An object is to flatten a frequency characteristic. For achieving the object, an acoustic generator according to an embodiment includes a piezoelectric element (exciter) and a film (film-like vibrating body). The piezoelectric element receives input of an electric signal and vibrates. The piezoelectric element is bonded to the film through a bonding material and the film vibrates together with the piezoelectric element with the vibration of the piezoelectric element. Furthermore, the acoustic generator in the embodiment has voids in the bonding material. | 12-18-2014 |
20150144419 | METHODS DEVICES APPARATUS ASSEMBLIES AND SYSTEMS FOR GENERATING & DIRECTING SOUND PRESSURE WAVES - Disclosed are methods, devices, apparatus, assemblies and systems for generating and directing acoustic energy (e.g. sound). According to some embodiments, there may be provided a cyclical acoustic apparatus or generator comprising a cyclical combustions chamber adapted to cyclically generate acoustic energy. There may be provided an acoustic energy collection and guiding assembly adapted to channel sounds energy generated by said cyclical combustion chamber to an aiming and release apparatus, which aiming and release apparatus directs the acoustic energy towards a target zone. | 05-28-2015 |
20160059264 | USE OF PULSED THERMAL RADIATION AND NANO-STRUCTURES FOR THE EFFECTIVE GENERATION OF SOUND WAVES IN KHZ RANGE - Disclosed herein is a high-efficiency kilohertz-range acoustic wave generator using a pulsed thermal radiation beam and a nanostructure. A nanorod unit having a high thermal expansion coefficient is provided behind a light interrupter so that the efficiency of generating acoustic waves can be enhanced. A pulse beam generated from the light interrupter is directly radiated onto the nanorod unit having a nanorod bundle structure with a nanorod-opposite-end support. Thermal deformation of the nanorod unit attributable to thermal expansion and contraction is repeated. In this way, the amplitude of sound waves can be increased, and relatively high decibel sound can thus be generated. | 03-03-2016 |
20160059265 | USE OF PULSED THERMAL RADIATION AND NANO-PARTICLES FOR THE EFFECTIVE GENERATION OF SOUND WAVES IN KHZ RANGE - Disclosed herein is a high-efficiency kilohertz-range acoustic wave generator using a pulsed thermal radiation beam and nanoparticles. A vibration (pulse) generating means having a suspension structure is provided behind a light interrupter. The suspension structure is configured such that nanoparticles are suspended in a solution so that when the nanoparticles are thermally expanded by pulse beams directly applied to the nanoparticles and are thermally contracted, the solution vibrates (generates matter waves and pressure waves). Thereby, loss of pulse beams can be minimized, and energy having a relatively large wavelength can be easily obtained. Therefore, the efficiency and productivity in generating acoustic waves can be maximized. | 03-03-2016 |