Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7889601 | Lightweight acoustic array An acoustic transducer array and method of baffle construction is presented to provide an improved array for use in underwater installations. The array is presented wherein a significant majority of the acoustic energy receiving surface is formed by lightweight acou... | 02/15/2011 |
| 7626890 | Hybrid-drive multi-mode pipe projector A hybrid drive (HD) multi-mode pipe projector (MMPP) for use in underwater acoustic applications is provided. The HD MMPP is formed with an inner magnetostrictive drive motor nested within an outer drive motor. The inner motor is surrounded by a magnetic field gener... | 12/01/2009 |
| 7408842 | Sonar dome The Invention is a reinforced plastic sonar dome having a low acoustical insertion loss combined with sufficient mechanical strength. Acoustical and structural fibers are stochastically mixed and formed into a blended yarn. The blended yarn is woven into a blended f... | 08/05/2008 |
| 7359849 | Translation techniques for acronyms and ambiguities In general, the invention is directed to translation techniques for acronyms and ambiguities. In one embodiment, translation of a source text into a target language includes identifying a potential acronym in the source text and presenting a translated acronym to th... | 04/15/2008 |
| 7349292 | Increased effective aperture for receive arrays A sonar dome having an acoustic array housed therein. A plurality of bubbles are generated within the fluid inside the sonar dome. The generated bubbles are of an amount and size to reduce the speed of sound within the sonar dome fluid. Reduction of the speed of sou... | 03/25/2008 |
| 7325656 | Elevator installation with device for noise reduction An elevator installation includes an elevator car that moves in an elevator shaft with shaft doors and which car has at least one car apron arranged parallel to a plane of a shaft wall at a shaft door side. A device for reducing noises generated by the air flow aris... | 02/05/2008 |
| 7298672 | Marine seismic streamer having acoustic isolation between strength members and sensor mounting A seismic streamer includes a jacket covering an exterior of the streamer. At least one strength member extends along the length of and is disposed inside the jacket. At least one seismic sensor is disposed in a sensor spacer mounted to the at least one strength mem... | 11/20/2007 |
| 7289038 | Underwater sound radiation apparatus A plurality of actuators are provided at predetermined intervals on the reverse surface of a predetermined side wall of a swimming pool. When an electric signal corresponding to a sound to be propagated in the water is given to the actuators, the electric signal is ... | 10/30/2007 |
| 7249513 | Ultrasound probe An improved ultrasound probe includes a support member, a signal cable having a plurality of electrically conductive members and an ultrasound transducer array. Distal end portions of each of the conductive members may be separately embodied within and extend throug... | 07/31/2007 |
| 7197959 | Coupling structure mountable to a rotatable shaft A coupling structure capable of being removed in an undamaged condition from a rotatable shaft. The coupling structure includes a metallic insert and a polymer hub surrounding the metallic insert. The metallic insert features a sleeve and a flange at the leading edg... | 04/03/2007 |
| 7196971 | Method and apparatus for damping an ultrasonic transducer suitable for time of flight ranging and level measurement systems A method and apparatus for damping an ultrasonic transducer suitable for time of flight ranging and level measurement systems. The ultrasonic transducer comprises a damping component which absorbs vibrations in the transducer to reduce the ringing effect. The dampin... | 03/27/2007 |
| 7195034 | Fluid trim apparatus and method A noise reducing apparatus and method for handling of fluid comprises a plurality of discs stacked on one another, each disc having a radially inner periphery and a radially outer periphery, and a plurality of fluid flow channels defined on at least some of the disc... | 03/27/2007 |
| 7190637 | Guided underwater object A guided underwater object (GUO) (100) comprises steering means, an on-board guidance system (200) for controlling the steering means, and a hydrophone unit or units (104A, 104B, 104C, 104D, 104E, 104F, 104 | 03/13/2007 |
| 7104357 | Device for generating focused elastic waves in a material medium such as underground, and method using same An electromechanical device for generating elastic waves in a material medium such as the subsoil in a frequency range where the wavelengths of the waves generated are great in view of the dimensions of the device, and method of implementation. The device comprises ... | 09/12/2006 |
| 7103960 | Method for providing a backing member for an acoustic transducer array A method is provided for making a backing layer for an ultrasonic matrix array transducer useful in medical imaging and the like. A conductive grid is provided which includes a plurality of micro-contacts each joined together by a common base so that spaces are prov... | 09/12/2006 |
| 7105986 | Ultrasound transducer with enhanced thermal conductivity A composite structure of a backing material with enhanced conductivity for use in a transducer is presented. The composite structure includes a plurality of layers of backing material alternatingly arranged with a plurality of thermal conductive elements, wherein th... | 09/12/2006 |
| 7048473 | Vibration-proof construction method A vibration-proof construction method for preventing and reducing vibration around a structure which generates vibration or receives vibration includes construction work wherein a hard member having higher stiffness than the surrounding ground and a rubber elastic m... | 05/23/2006 |
| 7035167 | Seismic sensor A seismic sensor, has a case, a pre-charged, non-conductive membrane located between two plates that form a capacitor and accommodated inside the case, with one of the plates being immovable relative to the case and the other of the plates being movable relative to ... | 04/25/2006 |
| 7016174 | Instantaneous fault detection circuit method and apparatus An algorithmic system for an electronic trip unit is provided whereby reliable instantaneous protection is provided. A multi-algorithmic approach uses an algorithm to detect bolted faults based on a direct comparison of the current and a threshold value, and an addi... | 03/21/2006 |
| 7009326 | Ultrasonic vibration apparatus use as a sensor having a piezoelectric element mounted in a cylindrical casing and grooves filled with flexible filler An ultrasonic vibration apparatus includes a casing having a vibration face, a piezoelectric element mounted in the casing, and a disk-like vibration plate supported at a position along a concentric circle differentiating two regions, an inner region and an outer re... | 03/07/2006 |
| 6996030 | Apparatus and method for minimizing reception nulls in heterodyned ultrasonic signals A focal point reflector is used in conjunction with a dual heterodyne circuit to reduce reception nulls that can occur when performing ultrasonic measurements. The focal plane reflector is a flat non-porous or reflective material, such as printed circuit board (PCB)... | 02/07/2006 |
| 6951262 | Method and apparatus for suppressing waves in a borehole Methods and apparatus for suppression of wave energy within a fluid-filled borehole using a low pressure acoustic barrier. In one embodiment, a flexible diaphragm type device is configured as an open bottomed tubular structure for disposition in a borehole to be fil... | 10/04/2005 |
| 6950373 | Multiply resonant wideband transducer apparatus An electro-mechanical transducer is disclosed, which provides a wideband response by activating successive multiple resonant frequencies in a way which provides additive output between the resonant frequencies. A three mode wideband high output transducer is also di... | 09/27/2005 |
| 6935472 | Damping structure and applications A damping structure includes a member defining an internal cavity; an aggregate which includes at least solid bodies in contact and which completely fills the internal cavity; a rigid plate for closing off the internal cavity; and an elastic element which exerts ela... | 08/30/2005 |
| 6936008 | Ultrasound system with cableless coupling assembly An ultrasound imaging device having a cableless coupling for coupling a two-dimensional array of ultrasound transducers to a signal generating and receiving unit such as a motherboard. The coupling includes an acoustically attenuating and electrically conductive str... | 08/30/2005 |
| 6862254 | Microfabricated ultrasonic transducer with suppressed substrate modes The present invention provides a microfabricated acoustic transducer with suppressed substrate modes. The modes are suppressed by either thinning the substrate such that a longitudinal ringing mode occurs outside of the frequency band of interest or by applying a ju... | 03/01/2005 |
| 6849053 | Shock wave source with a wave damping coil carrier A shock wave source has a coil carrier, a coil, having a metallic membrane separated from the coil in insulating fashion for generating shock waves. The coil carrier is formed of a material that damps the formation and/or the propagation of audible acoustic waves in... | 02/01/2005 |
| 6837859 | Shock wave source with a coil carrier having a non-circular contour A shock wave source has a coil carrier, having a longitudinal axis, a coil and a metallic membrane separated from the coil in insulating fashion for generating shock waves. The coil carrier has a generated surface, a first cover surface facing toward the coil and a ... | 01/04/2005 |
| 6822929 | Micro acoustic spectrum analyzer A micro acoustic spectrum analyzer for determining the frequency components of a fluctuating sound signal comprises a microphone to pick up the fluctuating sound signal and produce an alternating current electrical signal; at least one microfabricated resonator, eac... | 11/23/2004 |
| 6714484 | Microfabricated acoustic transducer with suppressed substrate modes A microfabricated acoustic transducer with suppressed substrate modes includes a diaphragm containing an upper electrode suspended above a substrate containing a lower electrode; the substrate may or may not contain electronic circuits. The substrate modes are suppr... | 03/30/2004 |
| 6697302 | Highly directive underwater acoustic receiver An underwater acoustic receiver sensor is disclosed that measure up to seven (7) quantities of acoustic field at a collocated point. The quantities measured by the acoustic receiver sensor are acoustic pressure, three orthogonal components of acoustic par... | 02/24/2004 |
| 6584039 | Multi-mode pipe projector An underwater acoustic projector comprising a pair of spaced apart end plates with an acoustic driver positioned between the end plates, the driver having smaller cross-sectional dimensions than the end plates. Each end plate close one end of an open ende... | 06/24/2003 |
| 6567343 | Flextensional resonant pipe projector An underwater acoustic projector comprising a pair of spaced apart end walls with an acoustic driver positioned between the end walls, the driver having smaller cross-sectional dimensions than the end walls. The projector has a one piece thin wall inwardl... | 05/20/2003 |
| 6567342 | Flared wave-guide projector An underwater acoustic projector comprising a pair of spaced apart end walls with an acoustic driver positioned between the end walls, the driver having smaller cross-sectional dimensions than the end walls. Each end wall close one end of flared open ende... | 05/20/2003 |
| 6545949 | Axial drive resonant pipe projector (ADRPP) An underwater acoustic projector comprising a pair of spaced apart end walls with an acoustic driver positioned between the end walls, the driver having smaller cross-sectional dimensions than the end walls. Each end wall close one end of open ended tubul... | 04/08/2003 |
| 6514618 | Multilayer backing material for 2-D ultrasonic imaging arrays A multilayer backing for an ultrasonic transducer array comprises at least two layers in contact with each other. The first layer is formed from a first composition comprising an epoxy resin base and a powder. The second layer is formed from a second comp... | 02/04/2003 |
| 6504795 | Arrangement of micromechanical ultrasound transducers The damping of membranes of ultrasound transducers in an arrangement occurs at the front side directly on the membranes by applying a polymer layer, whereby the working temperature dependent on the operating frequency of the ultrasound transducer lies wit... | 01/07/2003 |
| 6474439 | Dipole logging tool A logging tool having a tool body, which can be positioned in a fluid-filled borehole, including a receiver section and a dipole transmitter; wherein the dipole transmitter includes a transducer with a shell having a reaction mass and a motor located ther... | 11/05/2002 |
| 6473365 | Supporting structure of hydrophones for towed array sonar system A support structure of hydrophones for a towed array sonar system includes elastic members arranged in each sensor package and adapted to support a hydrophone received in the sensor package while attenuating vibrations transmitted to the sensor package. E... | 10/29/2002 |
| 6418960 | Ultrasonic enhancement for solvent purge of a liquid delivery system The present invention generally provides an apparatus and method for improving the process of purging a liquid delivery system used in integrated circuit manufacturing. The liquid delivery system comprises ultrasonic transducers mounted to various compone... | 07/16/2002 |
