Patents
Sitemap › B06 - Generating or transmitting mechanical vibrations in general › B06B - Generating or transmitting mechanical vibrations in general › B06B 1 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency
Patents for B06B 1 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency (14,020)
07/1991
07/02/1991US5029148 Flextensional
07/02/1991US5027822 Echography probe with improved connection circuit
06/1991
06/27/1991WO1991008842A2 Vibration generator
06/27/1991WO1991008706A1 Ultrasonic instrument
06/27/1991WO1991007741A3 Resonance oscillator
06/27/1991DE4009609A1 Oscillation device for adjustable vibrator - provides individual vector positions for centrifugal forces of out-of-balance weights adjusted to reduce sum reaction torque
06/27/1991DE4000011A1 Single axis vibrator with frequency and amplitude control - uses four synchronised rotating off=centre weights and rugged control
06/27/1991DE3942217A1 Testing head for ultrasound impulses - has piezoelectric polyvinylidene transducer film with hard rubber and concentric lead ring plus e.g. PVC block inside on one face
06/26/1991EP0434493A1 Method for power increase of electroacoustic low frequency transducers and corresponding transducers
06/26/1991CN2079533U Vibration exciting device capable of self-adjusting eccentricity
06/25/1991US5026387 Method and apparatus for ultrasonic surgical cutting and hemostatis
06/25/1991US5025790 Graded frequency sensors
06/25/1991US5025666 Transducer with built-in printed circuit board
06/20/1991DE3941634A1 Schallisolierte halterung eines ultraschallwandlers Soundproofed holder of an ultrasonic converter
06/20/1991DE3940808A1 Surgical ultrasonic piezoelectric transducer array - uses array of ultrasonic generators to enable independent excitation of beam focused at kidney stone
06/18/1991US5025467 Cellular telephone ring annunciator
06/18/1991US5025273 RF drive circuit for an ion projection printing head
06/18/1991US5024320 Vibratory spiral elevator
06/16/1991WO1991009279A1 Soundproofed holding device for an ultrasonic transducer
06/16/1991CA2071828A1 Soundproofed holding device for an ultrasonic transducer
06/11/1991US5023504 Piezo-electric resonant vibrator for selective call receiver
06/08/1991CA2031697A1 Methods for incrasing the power of low frequency electro-acoustic transducers and transducers using said methods
06/05/1991EP0430072A2 Improved ultrasonic cleaner
06/05/1991CA2028397A1 Compaction apparatus and process for compacting sand
06/04/1991US5020724 Nozzle for water jet cutting
06/04/1991CA1284689C Ultrasonic mhz oscillator, in particular for liquid atomization
05/1991
05/30/1991WO1991007741A2 Resonance oscillator
05/30/1991WO1991007238A1 Device for feeding a high frequency oscillating tool
05/30/1991WO1991007237A1 Device for feeding a high frequency oscillating tool
05/29/1991EP0428750A1 Method and device for removing of sediment from the surface of thim-walled constructions
05/29/1991EP0428745A1 Electromagnetic vibrator
05/29/1991EP0428533A1 Low frequency sound generator, especially for grills
05/29/1991DE3939104A1 Electrical remote adjustment of eccentric rotary mass vibrator - has outlying masses displaced by electromagnets switched by delayed-dropout relays and ganged rotary stepped selectors
05/29/1991CN1051688A Cleaning apparatus and process
05/28/1991US5020036 Magnetostrictive transducer for logging tool
05/28/1991US5020035 Transducer assemblies
05/21/1991US5018116 Inter-element mounting for stacked piezoelectric transducers
05/16/1991DE4020881A1 Resonanzschwinger Resonance oscillator
05/16/1991DE3937205A1 Physical parameter e.g. pressure measuring device - with temp. measuring device at active region
05/15/1991EP0427177A2 Vibrator
05/15/1991EP0426761A1 Acoustic field transducers.
05/15/1991CN2076884U Self-synchronism vibration unit
05/14/1991US5016228 Sonar transducers
05/14/1991US5015929 Piezoelectric device with reduced negative waves, and use of said device for extracorporeal lithotrity or for destroying particular tissues
05/14/1991US5014711 Ultrasonic diagnosis apparatus
05/14/1991US5014564 Eccentric drive mechanism
05/08/1991EP0426099A2 Ultrasonic transducer
05/08/1991EP0425697A1 Ultrasonic probe and method of producing the same
05/08/1991CN2076457U Ac electromagnetic vibrator
05/02/1991WO1991005617A1 Riddle for material to be sieved
05/02/1991WO1991005610A1 Cleansing machine
05/02/1991EP0424744A1 Ultrasonic inspection apparatus
05/02/1991EP0424685A2 Method for driving an ultrasonic transducer
05/02/1991EP0424681A1 Display box
04/1991
04/30/1991US5010778 Vibrator
04/25/1991DE3935432A1 Non-destructive tester for conductive workpieces - has electromagnet system movable over workpiece and cooling system
04/24/1991EP0423308A1 PVdF/TrFE PIEZOELECTRIC TRANSDUCER
04/18/1991WO1991004801A1 Electromagnetic vibration generators
04/18/1991WO1990016087A3 Piezoelectric device with air-filled kerf
04/18/1991DE3934296A1 Reinigungsmaschine Cleaner
04/18/1991DE3934295A1 Siebmaschine fuer den durchlauf von siebgut Screening machine for the passing of screenings
04/17/1991EP0422065A1 Frequency controlled motor driven low frequency sound generator.
04/16/1991US5008580 Piezoelectric vibration generator and vibratory parts feeder incorporating the same
04/10/1991EP0421439A2 Ultrasonic atomiser
04/10/1991EP0421286A2 Piezoelectric transducer
04/10/1991EP0420981A1 Device for generating acoustic oscillations in a liquid medium
04/09/1991US5007030 Transducer assembly for deep submergence
04/09/1991US5005665 Piezoelectric seismic vibration device and method
04/09/1991US5005511 Air-driven low-frequency sound generator with positive feedback system
04/09/1991US5005439 Inertia force generating device
04/09/1991CA1282657C Ultrasonic injecting method and injection nozzle
04/07/1991WO1991005331A1 Electroacoustic unit for generating high sonic and ultrasonic intensities in gases and interphases
04/04/1991WO1991004585A1 Piezoelectric cylindrical transducer for producing or detecting asymmetrical vibrations
04/03/1991EP0420190A2 Ultrasonic contact transducer and array
04/03/1991EP0419661A1 Electroacoustic converter
04/03/1991EP0419460A1 Integral acoustic emission sensor for manufacturing processes and mechanical components
04/02/1991CA1282487C Acoustic microscopy
03/1991
03/28/1991DE3931366A1 Centrifugal-force-type vibrator for building sites - has cooling oil pump and cooler mounted on load isolating suspension system
03/27/1991EP0418663A1 Piezoelectric membrane hydrophone
03/27/1991EP0418401A1 Method and device for acceleration of liquid and bulk materials
03/27/1991CA2026053A1 Ultrasonic contact transducer and array
03/26/1991CA1282163C Ultrasonic imaging apparatus
03/26/1991CA1282162C Electroacoustic device with broad frequency range directional response
03/22/1991WO1991004467A1 Device for determining and/or monitoring a predetermined volume in a container
03/21/1991WO1991003630A1 Fluid actuators
03/21/1991WO1991003267A1 Lung cancer hyperthermia via ultrasound and/or convection with perfluorocarbon liquids
03/19/1991US5001681 Monolaminar piezoelectric bender bar
03/19/1991US5001649 Linear power control for ultrasonic probe with tuned reactance
03/19/1991US5001442 Oscillation control apparatus for ultrasonic oscillator
03/19/1991US5000577 Light weight, high efficiency vibrator apparatus for facilitating bulk material handling and transport
03/13/1991EP0416910A2 Ultrasonic transducer electrical interface assembly
03/13/1991EP0416551A2 Method of producing a displacement device
03/12/1991US4999819 Transformed stress direction acoustic transducer
03/12/1991US4998549 Megasonic cleaning apparatus
03/08/1991WO1991003914A1 Electromagnetic resonant vibrator
03/06/1991CN1049635A Method for removing deposits, mostly ice, from surface being cleaned and device for effecting same
03/05/1991US4996907 Pneumatic knocking device
03/05/1991CA1281123C Line array transducer assembly
03/05/1991CA1281117C Method for driving a bender-type transmitter of a borehole logging tool to sequentially produce acoustic compressional and tube waves
03/02/1991CA2024341A1 Light weight, high efficiency vibrator apparatus for facilitating bulk material handling and transport
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