Matches 1 - 50 out of 81 1 2 >
Match Document Document Title
7297238 Ultrasonic energy system and method including a ceramic horn  
An acoustic system for applying vibratory energy including a horn connected to an ultrasonic energy source. The horn defines an overall length and wavelength, and at least a leading section thereof...
7004282 Ultrasonic horn  
An ultrasonic horn in accordance with the present invention comprises a horn body having a longitudinal transmission axis, a proximal end attachable at least indirectly to a source of ultrasonic...
6850623 Parametric loudspeaker with improved phase characteristics  
A parametric loudspeaker which uses multiple piezoelectric bimorph transducers. These multiple piezoelectric bimorphs have a resonant frequency which varies from unit to unit. The phase response at...
6834992 Acoustic pyrometer  
An acoustic pyrometer measures the average gas temperature across a wide space of known distance, especially turbulent, high temperature gas loaded with caustic particulates. It includes an...
6818128 Apparatus for directing ultrasonic energy  
An apparatus and method for transmitting ultrasonic energy. The apparatus may include a vessel, such as a conduit, having a first end, a second end, and a vessel axis between the first and second...
6652992 Corrosion resistant ultrasonic horn  
Ultrasonic horns of titanium are made corrosion resistant in aqueous media by the providing the horns with a silver end surface, either as a portion of the end surface or as the entire end surface.
6578659 Ultrasonic horn assembly  
An ultrasonic sonication device includes a velocity transformer or probe which, when coupled to a vibrating transducer of the piezoelectric or magnetostrictive type, resonates in sympathy with the...
6478108 Speaker box  
For a selective sound propagation pattern that has an especially high directivity, including in the bass frequency region, there is inventively provided a loudspeaker box ( 1 ) with a housing ( 2 )...
6359835 High intensity directed light and sound crowd dispersion device  
A device for influencing human behavior comprises an audio system arranged to produce a sound wave that may be directed to a selected location and a video system arranged to produce a light beam...
6341518 Ultrasonic standard  
The invention provides a device that generates predictable and reproducible sounds. The device according to the invention serves as a standard to calibrate ultrasonic measuring equipment through...
6201878 Portable compact disc player  
A portable compact-disc player (41), characterized by an opposed pair of loudspeakers (81) attached to the player, and in that each loudspeaker comprises a distributed mode acoustic radiator having...
6173803 High amplitude sound wave generator  
A method and device for generating a high amplitude sound wave is provided. The device includes a housing having an open end. A piston is slidably disposed in the open end of the housing and forms...
6151402 Vibration transducers  
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...
5973999 Acoustic cannon  
An acoustic cannon has a plurality of acoustic sources with output ends symmetrically arranged in a planar array about a central point. Pressure pulses are generated in each acoustic source at...
5613940 Synthesizing array for three-dimensional sound field specification  
A non-invasive, synthesizing array of "N" reciprocal transducers is driven by "N" linearly independent inputs for three-dimensional sound field specification at "N" locations either within, or on,...
5595585 Low frequency sound distribution of rotary fiberizer veils  
A method and device is disclosed for distributing a veil by applying low frequency sound to at least one portion of the veil, and causing the veil to deviate in its generally downward direction of...
5484969 High-volume acoustic transducer  
A high-volume source for very low frequency applications in which conventional speakers are inadequate is disclosed. A presently preferred embodiment comprises a reservoir 32 with a pressure relief...
5350887 Method and apparatus for the generation of low frequency sound  
The invention relates to a method and apparatus for the generation of low frequency sound by means of the excitation of a low frequency standing gas borne sound wave. A low frequency sound...
5321388 High efficiency phase and amplitude matched multiple horn electronic siren  
An electronic siren apparatus has a primary horn with a throat which splits into matched secondary horns each having sides, an output end, a longitudinal axis, and a circumference. The secondary...
5246595 Process for degassing a coupling liquid of a pressure wave generator apparatus employing coupling liquid by chemical route, coupling liquid thus treated and shock wave generator using such a coupling liquid  
A process for degassing a coupling liquid is disclosed, comprising adding to said coupling liquid at least one chemical substance readily taking up gas in a sufficient quantity to absorb said gas...
5233570 Low frequency underwater acoustic radiator  
Low frequency underwater acoustic radiator apparatus includes an air-trapping chamber with a lower portion open to the water, characterized by a mean density higher than that of water. A closed,...
5214620 Electrically driveable shockwave source  
An electrically driveable shockwave source for generating acoustic shockwaves of the type suitable for medical therapy, as a coil arrangement and a membrane disposed adjacent the coil arrangement....
5200932 Underwater audible signalling device  
A signalling device with a long audible range is described, which is intended for underwater communication between divers. The device consists of a compact and lightweight horn and a rubber bulb....
5109948 Frequency controlled motor driven low frequency sound generator  
The invention relates to a frequency controlled motor driven low frequency sound generator. The low frequency sound generator consists of an open resonator (2) arranged as a sound emitter for...
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...
4938136 Resonant acousticmagnetic minisweeper  
A system for sweeping acoustic and magnetic mines or a combination of both s disclosed as comprising a pair of spatially disposed magnetic pipes that are held in their respective spatial...
4796725 Electrostatic transducer  
An electrostatic transducer which includes a vibrating membrane provided between a fixed electrode and a movable electrode to which electric signals are applied. The transducer further includes a...
4755973 Space surveillance apparatus with sound source and method of short-range space surveillance  
A space surveillance apparatus includes at least one source of sonic radiation driven by a driver circuit as well as a processing or evaluation circuit. Upon movement of an object, or presence of a...
4713799 Ultrasonic horn with sidelobe suppressing centerpiece  
An ultrasonic horn assembly includes a horn with a bore tapering from a throat out to a mouth. An ultrasonic transducer is mounted in the throat of the horn. A beam narrowing insert includes a...
4541687 Signal processing system and method  
A system for processing of multifrequency input signals to provide a Fourier transform output is provided which can, for example, partition a wide input frequency band into a number of narrow bands...
4462483 Solid propellant sound generator for coagulation of aerosols  
A solid propellant gas generator operating with a calibrated tunable resonator produces a strong sonic field capable of affecting particle coagulation in an aerosol. The resonator is calibrated to...
4400804 Driver for high power sonar systems  
A high power sonar pulse generator driven by a low power electrical motor erein a flywheel, placed in the mechanical system, connects the small motor and large generator. Since the large power...
4387451 Low frequency nonresonant acoustic projector  
A nonresonant acoustic projector especially suited to the creation of low frequency (0-100 Hz, approximately) acoustic signals is provided, this projector including a housing and a rocker arm which...
4384633 Perforated acoustic transport member  
An improved acoustic transport member for use in a keyboard having key operated strikers individually actuatable for inducing acoustic energy in the form of sound waves which propagate through the...
4376469 Stepped acoustic transport member  
An acoustic transport member for use in a keyboard having key operated strikers individually actuatable for inducing acoustic energy in the form of sound waves which propagate through the member...
4202047 Acoustic jammer and torpedo decoy  
1. An acoustic decoy adapted to operate underwater, said decoy comprising a otor means, a circular spindle means connected to said motor means and adapted to be rotated thereby, said spindle means...
4196789 Protection by underwater sound waves  
Underwater protection for ships, for channels at harbor entrances and the like is obtained by the use of this invention in which one or more sending wires are put under tension under water and a...
4169662 Method and apparatus for producing acoustic waves by laser pulses  
Focussed acoustic waves are generated free of physical contact in a light absorbing workpiece by the use of laser beam means providing a coherent light beam which in a pulsed manner impinges upon...
4160411 Sound signal body for generating underwater sound signals  
A sound signal body, for generating underwater sound signals, that includes an explosive body which can be thrown out or released by hand. Within the explosive body is arranged an explosive charge...
4137991 Clamped acoustic elastic wave generator  
A pulse of energy including atomic, thermal or electromagnetic radiation produced by a source such as an electron or atomic beam, laser, electrical or optical means is applied to a generator. The...
4053027 Use for a seismic energy pulse generator for generating and shaping a seismic energy pulse  
In seismic delineation of sedimentary section below the surface of a seismic energy propagation medium, a new use for an old article is disclosed. It includes a basic method for generating and...
4049077 Seismic vibrator control system  
This invention is a control system for a hydraulic vibrator that permits the injection into the ground of seismic signals having pseudo-random code patterns or other broad band signals. Feedback...
4047592 Self-driven underwater noisemaking device  
An underwater noisemaking device that is self-driven for use in towed undater acoustic minesweeping or as a decoy countermeasure device. It comprises a cambered and slotted disc mounted in a frame...
4014403 Vibratory apparatus for use in seismic exploration  
In a variable frequency seismic vibrator including an earth coupling plate, means for generating a reaction impedance, and an energy source for generating reciprocating movement of the coupling...
3997021 Pressurized gas discharging apparatus for use as a down-bore seismic impulse source  
Improved pressurized gas discharging apparatus for use as a down-bore seismic impulse source provides a compact, efficient axially stacked assembly of components within a one piece elongated...
3946829 Ultrasonic device  
An ultrasonic device for convergently radiating ultrasonic energy including a metallic ring vibrated to resonance by at least one electromechanical transducer fixed on the outer circumference of...
3903988 Rocket noise generator  
A combination underwater rocket-ultrasonic noise generator having variously onfigured and located slots disposed in the inside wall of the rocket driving exhaust nozzle.
3895688 Acoustic transmitter  
A transmitter of acoustic energy which propagates that energy in a directional manner is described. An acoustic signal generator is connected at one end of an acoustic transmission line which...
3877412 METHOD OF AND APPARATUS FOR MASKING-NOISE GENERATION FOR ARCHITECTURAL SPACES AND THE LIKE  
This disclosure deals with the generation of broadband masking noise in rooms and the like by a high velocity airjet impinging in a controlled manner in the turbulent mixing region of the jet upon...
Matches 1 - 50 out of 81 1 2 >