Matches 1 - 50 out of 117 1 2 3 >


Match Document Document Title
8028790 Sound projection device attachable to a user when not in use  
A megaphone comprises a rigid but bendable material with a tapered shape. When the material is folded, the produced megaphone has a small opening at one end and a larger opening at the other end....
7870946 Device for non-contact conveying, handling and storage of structural elements and materials  
A device for generating a floating state of an object by sound waves includes a rigid support structure having a top surface for absorbing forces generated by the gravitation or acceleration of the...
7530424 Sonic boom simulator  
A supersonic boom simulator constructed from a directed coherent sound pulse source, a waveguide and a bass trap at the opposite end of the waveguide from the directed coherent sound pulse source.
6837332 Method and apparatus for cancellation of unwanted signals in MWD acoustic tools  
An apparatus (10) and method are disclosed for eliminating a noise signal from at least one source during an acoustic measurement of a subsurface geological formation or borehole. The apparatus...
6814160 Automated seismic geophone deployment  
An apparatus and method for orienting and for coupling geophones relative to soil. A hammer device oriented to the vertical drives a head into the soil to generate a case opening. Vertical...
6647791 Device for contactlessly gripping and positioning components  
A mechanism for the contactless gripping and positioning of a component having a planar peripheral edge region, including a sound producing device producing a pattern of levitation sound waves for...
6561309 Gas flow generator and apparatus for using the same  
A gas flow generator for use in a position control apparatus having an oscillating motion driver, a chamber having a side wall extending outwardly from the oscillatory motion generating surface of...
6250388 Gas impulse device and method of use thereof  
A self-firing and self-propelling gas impulse device which includes a housing having a longitudinal axis, a gas inlet port, and one or more gas discharge ports; an inlet chamber, arranged for gas...
6029519 Apparatus and method for manipulating a body in a fluid  
Apparatus for testing hydrodynamic performance characteristics of an object is operative for remotely manipulating the object using standing acoustic wave fields. The object is provided with a...
5992559 Reversible polarity borehole seismic device for P and enhanced S-wave crosshole testing  
A seismic source for crosshole testing comprises a hammer rod supported by axial bearings in the ends of a cylindrical housing. Fasteners attach a down-blow hammer to the hammer rod inside the...
5925821 Device for measuring noise in a pipe traversed by a fluid  
For performing a noise measurement in a pipe (16) traversed by a fluid such as air, in the pipe is placed a measuring device comprising a pipe section (10) having the same cross-section and in...
5811741 Apparatus for placing geophones beneath the surface of the earth  
An apparatus for placing geophones beneath the surface of the earth includes a machine frame that supports an elongated probe rod. The probe rod is dimensioned to reach a selected subterranean...
5808243 Multistage turbulence shield for microphones  
An acoustic sensing means such as a microphone or a thin-film sensor is located in a flowing medium. To prevent the sensing of flow generated noise, the sensing means is separated from the flowing...
5712452 Sound generator  
An improved sound generator includes a vibrating plate and a casing. The vibrating plate may become concave upon pressure and may return to its convex shape automatically to generate vibration and...
5690145 Fluidic device controlled by remotely located acoustic energy source  
A fluidic device is provided to control the path of a fluid. A control cher has at least one window incorporated therein that permits acoustic waves impinging thereon to pass therethrough. An...
5659155 Acoustical transducer enclosure  
The purpose of the invention is to direct, in a coherent fashion, audible frequencies, particularly, low frequencies and especially those below 90 cycles. The advantage to directing low frequencies...
5550789 Water turbulence detector  
A Doppler shift flow meter array detects turbulence in the wake of a submne. Three sets of transmitting and receiving sonic transducers are spaced in a line on a rigid support. The transmitting...
5540248 Fluidic sound amplification system  
A fluidic sound amplification system couples successive laminar proportional amplifiers through acoustic radiation between output and input horns to avoid the propagation of null offset signals. A...
5517173 Apparatus generating noise sound for electric car  
An apparatus for generating a noise sound, which is equipped in industrial electric cars with little or no driving sound and generates an appropriate amount of noise sound so that the nearby cars...
5511044 Thrust producing apparatus  
A device for producing thrust has a variety of uses, such as pumping liquid, compressing or blowing air, or powering an aircraft. The device has a chamber with a sound driver located therein. The...
5500493 Acoustic beam levitation  
A system is described that uses acoustic energy to position an object, which simplifies the application of forces in defined directions to the object and which enables the application of large...
5467322 Water hammer driven vibrator  
The invention provides apparatus for shaking structures such as fins in a fluid agitator, shaking tables, shaking screens, conveyors, or the walls of bins or hoppers. The apparatus is driven by a...
5459699 Method and apparatus for generating high energy acoustic pulses  
A method and apparatus are disclosed for generating intense acoustic pulses by means of the water hammer effect. The method involves generating a water hammer in a conduit by suddenly interrupting...
5394786 Acoustic/shock wave attenuating assembly  
An acoustic/shock wave attenuating assembly comprised of porous screens forms an enclosure filled with a suitable pressure wave attenuating medium or material having fluid characteristics. This...
5389746 Submarine hull structures providing acoustically isolated hull openings  
An acoustic isolation structure providing an acoustically isolated opening nd comprising coaxial inner and outer annular structural members defining an irregular annulus between them. Acoustical...
5371719 High security ultrasonic receiver apparatus  
A high security ultrasonic receiver apparatus including a rigid metal faceplate having an ultrasonic sensor affixed to the rear side thereof and adapted to sense acoustical energy transmitted to...
5347496 Method and system of mapping acoustic near field  
A method and system for mapping the acoustic near field of a stationary al symmetric structure are provided. The structure is subjected to a rotating excitation energy profile from a plurality of...
5257676 Method and apparatus for stabilizing levitated objects  
The present invention is drawn to a method of stabilizing the motion of a levitated object. The method involves continuously determining the motion of a levitated object, relative to a given point,...
5229973 Method of selecting ultrasonic transducers for use in ultrasonic inspection apparatus  
A method of selecting the ultrasonic transducers which are used in non destructive ultrasonic inspection apparatus consists of establishing under predetermined conditions the frequency spectra of...
5183974 Gas pulsation attenuator for automotive air conditioning compressor  
An attenuator for pressure and sound energy pulsations, such as are commonly produced in refrigerant gas discharged from a piston-type refrigerant compressor, is provided. The attenuator includes...
5096017 Aero-acoustic levitation device and method  
An acoustic levitator device for suspending a specimen object under the influence of gravity without contact with a solid surface comprising in combination gas levitation means for directing a...
5081900 Resonance damage process  
A method and system for the production of stress waves in a solid target employs a pulsed source of coherent photon energy. the pulse repetition frequency of the photon energy is chosen in...
RE33771 Visualizing method for three dimensional standing wave sound field  
A visualizing method for three dimensional standing wave sound field comprises the steps of mixing into a liquid medium a large number of fine particles of the same density as said liquid medium...
5072415 Method and microprocessor-based apparatus for directly measuring a particular index for the evaluation of the environmental noise pollution  
This invention relates to a method and a microprocessor-based apparatus for directly measuring the noise using a nuisance index (LDI) bound to two physical parameters of the noise: the average...
5036944 Method and apparatus for acoustic levitation  
An acoustic levitator includes a pair of opposed sound sources which have interfering sound waves producing acoustic energy wells in which an object may be levitated. The phase of one sound source...
5033033 Ultrasonic systems  
A method of establishing an ultrasonic standing wave in a fluid medium is described in which the standing wave is produced by an acoustic energy output along a path extending through the fluid...
5007031 Apparatus for positioning geophones in shallow holes  
A geophone and a geophone planting tool adapted to engage the outer case of the geophone, to hold it securely during aligning, leveling and implanting into the earth and to release it upon lifting...
4975799 Fibermetal acoustic reflector for sonar  
An underwater acoustic reflector for sonar applications having a title or her geometric form of fibermetal enclosed in a neoprene waterproof envelope and having surface area free of sharp...
4970704 Acoustical generator  
Disclosed is an acoustical energy generator having a venturi front section o which is attached a pair of rear tail pipes. A pair of return flow manifolds are respectively connected between said...
4964100 Acoustic detection system  
An acoustic detection device having a parabolic dish antenna for gathering ound waves and providing a first stage of amplification, an exponential horn located at the focus of the parabolic dish...
4962330 Acoustic transducer apparatus with reduced thermal conduction  
A horn is described for transmitting sound from a transducer to a heated chamber containing an object which is levitated by acoustic energy while it is heated to a molten state, which minimizes...
4943954 Method and a system for counteracting marine biologic fouling of a hull or a submerged construction  
A system and a method for counteracting marine fouling of e.g. a vessel hull (1) are provided.Electro-mechanical vibration transducers (2, 3) are arranged in pairs adjacent to fixed (clamped) nodal...
4920796 Tank level meter  
A tank level meter includes an elongated sound conductor of a solid material extending over the entire height of the tank. A sound generator is coupled to one end of the sound conductor to excite...
4917211 Seismic isolator  
A seismic isolator comprises: a friction device having upper friction plate and a lower friction plate, a friction plane of the upper friction plate and the lower friction plate having a...
4903793 Noise suppression by gas liquid mixture  
Gas liquid mixtures readily absorb the wave energy of noise and thus reduce noise intensity. By circulating gas liquid mixtures through jackets surrounding noisy machines, such as internal...
4891474 Sparking stylus for acoustic digitizer  
An improved stylus is disclosed for generating acoustic wave energy for use in an acoustic digitizer system wherein an operator-designated stylus position is determined from measurements performed...
4858717 Acoustic convective system  
A small and simple system is provided for cooling or heating a small component by flowing air or other fluid over it, which does not require any macroscopic moving parts. The system includes a...
4858204 Underwater signaling device  
An underwater signaling device being removably mounted to the strap commonly found in scuba diving tanks. The device includes two elongated members an one of them being removably secured to the...
4841495 Horn loaded transducer for acoustic levitation  
A sound source coupled to an acoustic levitation chamber is provided with horn loading to improve efficiency and to protect the sound source from heat. A dish sound source may be used, and the horn...
4815049 Disappearing baffle for sonar arrays  
A selectively transparent baffle means for controlling beam pattern dispel or direction, further comprising a plurality of parallel, vertically oriented, compliant tubes each of which attach to one...
Matches 1 - 50 out of 117 1 2 3 >