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| Number | Title | Issue Date |
| 7916578 | Seismic wave generation systems and methods for cased wells A vibration source (10) includes an armature bar (12) having a major length dimension, and a driver (20A) positioned about the armature bar. The driver (20A) is movably coupled to the armature bar (12), and includes an electromagne... | 03/29/2011 |
| 7881160 | Seismic vibrator array and methods of operation An arrangement for conducting a seismic survey and methods for operating a vibrator array in a seismic survey. A signal source coupled to an array of vibrators drives the vibrators with a set of signals to generate seismic signals into a survey area. Each of the sig... | 02/01/2011 |
| 7872949 | Vibrator array, manufacturing method thereof, and ultrasonic probe In an ultrasonic transducer array, a plurality of vibrators arranged in an array is bonded to a base plate by bond material. The bond material bonds the bottom of the each vibrator to the base plate in a manner to surround lower part of the side face of the vibrator... | 01/18/2011 |
| 7869307 | Ultrasonic transmission member An ultrasonic transmission member including one end part and the other end part and transmitting an ultrasonic wave input into the one end part to the other end part is formed by preparing a main mold having a casting cavity corresponding to a whole outer shape of t... | 01/11/2011 |
| 7813224 | Seismic source/receiver probe for shallow seismic surveying Systems and methods are implemented for evaluating underground structures and objects, particularly relatively shallow underground structures and objects, using a seismic or acoustic source signal and a resulting seismic or acoustic wave. A discrete or unitary appar... | 10/12/2010 |
| 7639567 | Generating seismic vibrator signals A method and apparatus for generating a seismic source signal are provided for generating energy in the form of a plurality of time sequence vibratory signals, the vibratory signals being partitioned as a function of time and/or frequency, wherein each of the plural... | 12/29/2009 |
| 7499378 | Device for emitting seismic vibration waves The invention relates to a device for emitting seismic vibration waves mountable on a movable platform (100) comprising a vibration system for transmitting the waves into the ground and a system for supporting a device (200) on the ground, wherein the ... | 03/03/2009 |
| 7477573 | Oscillation generator for seismic applications An oscillation generator for seismic applications includes a housing in which two coils are housed, both coils being acted upon with alternating current or electrical impulse and permanent magnets, and which is coupled via a coupling element to the object to be exam... | 01/13/2009 |
| 7436734 | Shaped high frequency vibratory source The present invention is a method of processing seismic data in which one or more seismic vibrators are activated with one or more pilot signals and vibrator motions are recorded along with seismic data. Vibrator signatures are computed from measured vibrator motion... | 10/14/2008 |
| 7420879 | Device for seismic emission in an underground formation and method for implementing same A device for seismic emission in an underground formation comprising one or more vibrators of any type and method for implementing same. According to a preferred embodiment, each vibrator comprises at least one pillar (1) of sensitive elements (of piezoelectr... | 09/02/2008 |
| 7388811 | Method for separating microseismic signals from seismic signals emitted by one or several sources This invention is a method of separating induced microseismicity signals from seismic signals acquired within active seismic monitoring operations carried out in underground zones under development which has application for monitoring of underground hydrocarbon or f... | 06/17/2008 |
| 7382684 | Method for selective bandlimited data acquisition in subsurface formations The method for exploring desired characteristics of a subsurface sector, having at least one resonant frequency, is based on selectively transmitting suitable narrowband energy waves into the subsurface sector, thereby producing narrowband signals reflected off the ... | 06/03/2008 |
| 7364008 | System for imparting mechanical impulse energy to the ground The invention relates to an apparatus and method for imparting a precise amount of impulse energy to be delivered to the ground. The apparatus includes an anvil for operative deployment against the earth a hammer operatively connected to the anvil for striking the a... | 04/29/2008 |
| 7364114 | Aircraft The present invention concerns an aircraft having a plurality of lifting and thrust rotors, with an electric motor and an inverter for each motor. In order to provide an aircraft having a greater payload, connecting bars are provided between the motors. In that resp... | 04/29/2008 |
| 7330401 | Seismic vibratory acquisition method and apparatus A method and related apparatus are described for generating acoustic signals for use in a vibratory seismic survey, including the step of combining into a drive signal a high frequency sweep signal, which sweeps upwardly through a high frequency band during a first ... | 02/12/2008 |
| 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 |
| 7270325 | Sheet feeding apparatus, image reading apparatus, and method of detecting double feed A sheet feeding apparatus includes first and second transport devices disposed at a transport guide with a distance in between for nipping and transporting a sheet, and a double feed detection device disposed between the first transport device and the second transpo... | 09/18/2007 |
| 7269099 | Air gun A seismic air gun includes an operating chamber, a firing chamber, a port, and a longitudinally disposed cavity sized and shaped to accept a plurality of wires. A moveable shuttle includes a shuttle flange within the operating chamber at one end and a firing shuttle... | 09/11/2007 |
| 7136325 | Vibration generator for seismic applications A vibration generator can be used for seismic applications, producing vibrations for exploration of near-surface subsoils up to 150 meters. Containing two coils activated with AC current or other electrical pulses, the generator is coupled to the object to be invest... | 11/14/2006 |
| 7126243 | Supporting mechanism of micro gravity rotating apparatus A rotator supporting mechanism in a microgravitational rotating apparatus includes a magnetic bearing of the rotator so as to effect a vibration control. Recess portions 10a, 10b are provided in a casing 10. Coils 1, 2 of th... | 10/24/2006 |
| 7013989 | Acoustical telemetry Method, apparatus and article of manufacture for monitoring and characterizing the operation of a transducer (i.e., motor or pump) downhole. In particular, transducer RPMs are determined by analysis of acoustic information. An acoustical source (signal generator) lo... | 03/21/2006 |
| 6961283 | Adaptive filtering apparatus and method for seismic data acquisition The present invention provides an adaptive filtering method for substantially eliminating ground roll noise encountered during seismic data acquisition. An apparatus for acquiring seismic data is provided that includes an adaptive filtering circuit coupled to a mult... | 11/01/2005 |
| 6925187 | Horn array emitter A sonic emitter, horn array with enhanced emitter-to-air acoustic coupling, with particular application to ultrasonic frequencies. The emitter comprises a plate support member having opposing first and second faces separated by an intermediate plate body. The plate ... | 08/02/2005 |
| 6915217 | Laser doppler vibrometer for remote assessment of structural components A method and system for remotely inspecting the integrity of a structure. This can be performed by a method creating a vibratory response in the structure from a remote location and then measuring the vibratory response of the structure remotely. Alternatively, this... | 07/05/2005 |
| 6831877 | System and method for determining an azimuth of a seismic energy source The present invention provides a system for, and method of determining an azimuth of a seismic energy source. In one embodiment, the system includes a directional assembly having a mount configured to be coupled to a seismic energy source, a rotatable mass assembly ... | 12/14/2004 |
| 6640628 | Level-measuring device This invention relates to a level-measuring device in which a signal generating device, a sampling device and a transmitting and/or receiving device are optimally connected to one another for various applications and signal shapes. The signal generating d... | 11/04/2003 |
| 6603707 | Method of reducing harmonic noise in vibroseis operations The invention relates to a vibroseis analysis method in which frequency-sweep signals (10) are emitted into a subsurface, the signals reflected on the substrata of such a subsurface (10, 20) are logged and the logged signals are processed, a method in whi... | 08/05/2003 |
| 6493289 | Ultrasonic cleaning apparatus Provided is a vibrating section having an ultrasonic transducer of piezoelectric elements and a rear ultrasonic horn and a front ultrasonic horn, the horns being joined to the transducer. The ultrasonic transducer has a consumption power set at 8W or less... | 12/10/2002 |
| 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 |
| 6438243 | Vibration wave detector A vibration wave detector having a first diaphragm for receiving vibration waves, such as sound waves and so on, to be propagated in a medium, a resonant unit having a plurality of cantilever resonators each having such a length as to resonate at an indiv... | 08/20/2002 |
| 6181646 | Geophysical exploration system using seismic vibrator source which provides a composite sweep A system for geophysical exploration uses a single source (30) which emits signals over multiple octaves. The source is driven by a composite sweep signal having two or more sweeps, one of which covers the lower octave (10) while the other sweeps cover th... | 01/30/2001 |
| 6065562 | System for imparting compressional and shear waves into the earth A seismic vibrator system for imparting compressional and shear wave vibrations into the earth has an earth contacting base with a vertical post. A tubular hub is slidably received on the post in a piston/cylinder relationship. Spaced apart horizontal top... | 05/23/2000 |
| 5717170 | Swinging-weight vibrator for seismic exploration Seismic exploration for hydrocarbons may use an eccentric-mass (or "swinging-weight") vibrator as the seismic source. According to the invention, a vibrator undergoes alternate periods of acceleration and deceleration, during one of which the vibration ma... | 02/10/1998 |
| 5710720 | Phase lock loop based system and method for decomposing and tracking decomposed frequency components of a signal, with application to vibration compensation system Disclosed is a system for decomposing an original signal of arbitrary frequency content into a user determined plurality of signals, each of which signals is centered about a variable center frequency. The system of the present invention utilizes a Bank o... | 01/20/1998 |
| 5703833 | One step inversion/separation scheme using a plurality of vibrator sources A method for generating, recording and pre-processing high fidelity vibratory seismic data in a system that uses a plurality of vibratory sources includes the steps of measuring the motion of each of the vibrators, determining a ratio by dividing the vibr... | 12/30/1997 |
| 5666328 | Three axis seismic vibrator A three-axis seismic vibrator is provided which imparts compressional and shear wave seismic vibrations, either sequentially or simultaneously, into the Earth's surface. The seismic vibrator includes an earth-contacting baseplate which transmits vibration... | 09/09/1997 |
| 5401919 | Removable piston bore liner for hydraulically actuated seismic vibrator A removable bore liner is provided that substantially increases the dependability, flexibility and field-serviceability of seismic vibrators and other hydraulically actuated devices. A method for installing the removable bore liner in a seismic vibrator i... | 03/28/1995 |
| 5360951 | Earth reaction seismic source A source for emission of seismic energy waves into subsurface earth formations is provided with electrically energizable signal generators mounted between two plate members. One of the plate members is anchored to the earth surface and the other rests on ... | 11/01/1994 |
| 5347494 | Shaped-sweep technology A method for producing simple seismic wavelet shapes with minimal side lobe energy for use as reference signals for seismic vibrators is disclosed.... | 09/13/1994 |
| 5331607 | Sweep frequency vibrator A sweep frequency vibrator is set forth. It has an elongate cylindrical housing closed at the top and bottom ends. On the interior, there is a reactionary mass fixed to identical upper and lower piston ends. They are received in seal isolated chambers, on... | 07/19/1994 |
