Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 8111585 | Underwater acoustic transducer array and sound field shaping system A sonar system includes an objective having reflecting surface(s) with coincident forward radiant axes. Each of the reflecting surfaces defines sets of equivalent acoustic output/receiving locations allowing the use of a plurality of transducers with each reflecting... | 02/07/2012 |
| 7613076 | Acoustic power transformer including lens An acoustic power transformer includes: an input port adapted to receive an input signal; a transmitting acoustic transducer coupled to the input port and adapted to transmit an acoustic wave in response to the input signal received at the input port; a receiving ac... | 11/03/2009 |
| 7542378 | Electroacoustic transducer arrangement for underwater antennas The invention relates to an electroacoustic transducer arrangement for underwater antennas comprising: interspaced transducer elements (11); a reflector (12) that, in a sound incidence direction, is situated behind the transducer elements (11), ... | 06/02/2009 |
| 7457198 | Swimmer detection sonar network A method for detecting an object in a body of water by generating a plurality of signals and applying each signal to a separate submerged sonar node that is a part of an array of sonar nodes. ... | 11/25/2008 |
| 7370842 | Support structure with self-adapting support surface for receiving any type of body An exemplary support structure has an auto-adaptable surface. The exemplary support structure comprises a base; an assembly of distinct, adjacent contacts; and an assembly of platforms of a common level forming a common tier, each platform being linked to the base b... | 05/13/2008 |
| 7328108 | Processing seismic data A method of processing multi-component seismic data acquired at a receiver station comprises determining a calibration filter that calibrate a first component of the seismic data relative to a second component of the seismic data in order to compensate for differenc... | 02/05/2008 |
| 7311678 | Pressure-pulse therapy apparatus Disclosed is a device for producing an intracorporeal pressure pulse comprising a pressure pulse source configured to generate a collimated pressure pulse and an acoustic lens including at least one ring-shaped focusing section configured to focus a pressure pulse g... | 12/25/2007 |
| 7311677 | Energy concentrator system and method Reflective apparatus and method by which energy is radiated in divergent fashion from an elongated source and is reflected by a first parabolic reflector as a paraxial beam, focused by a second parabolic reflector onto a hyperbolic reflector and reflectively concent... | 12/25/2007 |
| 7267654 | Focused shock-wave devices with direct wave cavitation suppressor A reflector (14) reflects energy emitting from an energy source (16) and focuses and directs it to a target. An aperture stop or suppressor disk (18) is positioned between the energy source (16) and target. The outer periphery of the aper... | 09/11/2007 |
| 7167415 | Transducers for focusing sonic energy in transmitting and receiving device Ultrasonic transducers which include at least one internally directed generally concavely configured sonic energy radiating element which directs sonic energy toward at least one arcuate energy reflecting surface which redirects and focuses the energy through an ope... | 01/23/2007 |
| 7132952 | Security system for a portable article The combination of a portable article and a security system. The security system has a flexible element/tether with a length. The flexible element/tether is connected between the portable article and a support to confine movement of the portable article within a ran... | 11/07/2006 |
| 7129834 | String wireless sensor and its manufacturing method A string wireless sensor 11 comprising a wireless sensor 13, incorporating the transmitting portion, which transmits electric signals by wireless and a string holder (polymer 12) which holds the wireless sensor at a certain distance. ... | 10/31/2006 |
| 7046583 | High-power transmission acoustic antenna The present invention relates to high-frequency antennas with high transmission power. The invention consists in making the backing layer of such an antenna with a heat-conductive foam and enables the transmission power to be appreciably doubled. ... | 05/16/2006 |
| 6979937 | Laser machining of electroactive ceramics Laser beam machining is applied to form arbitrarily shaped electroactive ceramics for transducers (e.g., electromechanical sensors and actuators). One particularly preferred embodiment of the invention comprises machining parallel grooves in a ceramic plate to impro... | 12/27/2005 |
| 6768702 | Baffled ring directional transducers and arrays The present invention relates to a directional electro-acoustic transducer and arrays of transducers of the cylindrical or ring electro-mechanical type in conjunction with a partial conformal acoustic baffle. Such a device has very desirable directional beam pattern... | 07/27/2004 |
| 6738315 | Underwater target testing An underwater target such as the hull of a ship is tested for its susceptibility to damage from explosive shock waves emerging from a rigid conical shell in response to detonation of an explosive charge therein. Such shell is located underwater in close spaced relat... | 05/18/2004 |
| 6625288 | Collapsing paraboloid dish and method A paraboloid receiving dish having a base, a receiver coupled to the base, and a plurality of petals pivotably connected to the base. The petals are moveable between an open position and a closed position with each of the positions forming a reflector hav... | 09/23/2003 |
| 6529445 | Method of reducing effects of a rough sea surface on seismic data A method of correcting seismic data for the effects of a rough sea surface is disclosed. Corrections for the effect of a rough sea surface are made by determining the time-dependent height of the sea surface, either by direct measurement or by calculation... | 03/04/2003 |
| 6325172 | Geophone including laser interferometer An interferometric geophone includes a freely-falling reference mass and an interferometric arrangement to measure motion of a surface to which the geophone is attached. The mass may fall through an evacuated chamber. A carriage arrangement may reposition... | 12/04/2001 |
| 6188645 | Seismic sensor array with electrical-to optical transformers A seismic sensor array includes a means for passive electrical to optical energy transformation and transmission. This transformation is used remotely with traditional sensor arrays, which may include hydrophones, geophones, or a combination of them. The ... | 02/13/2001 |
| 5933390 | Method for reducing the accumulation of precipitants and impurities on ultrasonic transducers A method for reducing the accumulation of impurities on the vibrating surface of an ultrasonic transducer includes the steps of immersing the transducer in a liquid and orienting the vibrating surface of the transducer at an oblique angle to the liquid su... | 08/03/1999 |
| 5781509 | Wide beam array with sharp cutoff A transducer array is constructed from a constant arc length portion of a ght circular cylindrical shell of piezoelectric transduction material. The constant arc length portion is segmented evenly along the length thereof to define a plurality of transduc... | 07/14/1998 |
| 5726444 | Ultrasonic directional fiber-optic hydrophone A high sensitivity, high frequency directional hydrophone is disclosed which utilizes flexible optical waveguide wrapped about an hemispherical mandrel located at the focus of a paraboloidal acoustic reflector.... | 03/10/1998 |
| 5712447 | Vibrationally and acoustically insulated structure A vibrationally and acoustically insulated structure includes a structure using enclosing a source of internally generated noise and vibrations. The structure further includes a vibration and acoustic insulating device positioned over a portion of the int... | 01/27/1998 |
| 5705769 | Vibrationally damped structure A vibrationally damped structure includes a structure that is susceptible vibrations and a constrained damping layer positioned over at least a portion of the vibrating structure. The constrained damping layer includes a continuous damping layer bonded t... | 01/06/1998 |
| 5706252 | Wideband multifrequency acoustic transducer The invention relates to multifrequency acoustic transducers exhibiting a wide band around each resonant frequency. It consists in inserting between a λ/2 active emitter plate (201) and the soft reflector (203) which supports it a rear plate (202) resona... | 01/06/1998 |
| 5629906 | Ultrasonic transducer An acoustic transducer includes a support structure which holds an acoustic pulse generator having both a front application face and a rear face. An acoustic absorber is attached to the rear face of the pulse generator. An acoustic isolator is positioned ... | 05/13/1997 |
| 5621701 | Controlled compliance acoustic baffle An acoustic baffle for reflecting sound waves and rejecting background interference noise for use with a hydrophone array. The baffle utilizes a plurality of lenticular resilient elements embedded in a compliant foam elastomer compound. The embedded eleme... | 04/15/1997 |
| 5615176 | Acoustic reflector An acoustic reflector is disclosed, which is formed from the surface generated by an ellipse rotated about 180° about a line passing through one of the focal points of the ellipse, where this line of rotation intersects the major axis at an acute angle. ... | 03/25/1997 |
| 5499219 | Electro-acoustical transducer arrangement An electro-acoustical transducer arrangement for underwater antennas comprised of a plurality of hydrophones (10) which are arranged at equal distances in a linear array, and are to be disposed vertically above each other on a support. For reasons of a si... | 03/12/1996 |
| 5339289 | Acoustic and ultrasound sensor with optical amplification An optical lever acoustic and ultrasound sensor with increased sensitivity using an optical amplification means to amplify the motion of an incident acoustic wave and convert it to an electric signal for image processing. Three approaches to the optical a... | 08/16/1994 |
| 5309411 | Transducer A transducer apparatus and method for generating sonic sound waves having a far field wavefront amplitude pattern in a Bessel or Gaussian distribution is disclosed. The transducer includes a piezoelectric element having uniformly poled dipoles formed ther... | 05/03/1994 |
| 5305731 | Apparatus for generating acoustic wave having a liquid lens with an adjustable focal length A generator for acoustic waves has a source of acoustic waves with which acoustic waves can be introduced into an acoustic propagation medium and a liquid lens having a variable focal length which is arranged in the acoustic propagation medium, the liquid... | 04/26/1994 |
| 5249163 | Optical lever for acoustic and ultrasound sensor An acoustic sensor, suitable for use as an ultrasonic transducer, microphone or hydrophone, uses an optical lever to amplify the motion of the sensor surface and convert it to an electrical signal suitable for image processing. In the acoustic sensor, a b... | 09/28/1993 |
| 5247490 | Pressure-compensated optical acoustic sensor There is described an optical acoustic sensor that is pressure-compensated for operation in high-pressure environments such as the deep sea and that may be employed in multi-sensor arrays. The sensor includes an acoustically responsive diaphragm that is i... | 09/21/1993 |
| 5212671 | Ultrasonic probe having backing material layer of uneven thickness An ultrasonic probe includes a piezoelectric material layer having a pair of electrodes provided on both main surfaces thereof for applying voltage thereto, and a backing material provided on one electrode. The backing material has an acoustic impedance l... | 05/18/1993 |
| 5175713 | Laser sound detector In order to sense the presence of sound in a remote underwater location, a neutrally buoyant reflector (20) is deployed underwater, and a laser (12) disposed at a remote location aims coherent light at the reflector (20). A detector (24) senses the cohere... | 12/29/1992 |
| 5162777 | Submerged alarm device for monitoring swimming pools An alarm device is placed in the water of a swimming pool for monitoring the swimming pool by triggering an alarm in response to changes in water pressure or sound as a result of persons falling into the swimming pool. The device includes a switch element... | 11/10/1992 |
| 5121340 | Multi-level probe and system for measurement of physical conditions in liquid-containing tanks A multi-level probe for sonic range measurements utilizes a plurality of parallel reflectors that each include an opening arranged coaxially about a beam of ultrasonic energy transmitted along a reference axis from an associated transducer. The opening in... | 06/09/1992 |
| 5115414 | Conical ultrasonic wave deflection system A conical ultrasonic wave deflection system has an ultrasonic transducer for ultrasonic microscopy using surface waves and/or Lamb waves in an object. A conical wave front is directed onto the object via a deflection element. An inactive axial circular di... | 05/19/1992 |
