Patents
Patents for B06B 1 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency (14,020)
01/1994
01/05/1994EP0426761B1 Acoustic field transducers
01/05/1994DE4322144A1 Vibrator unit using piezoelectric resonator - uses vibrations transmission element between oscillation source and oscillating element exhibiting flexure oscillation anode
01/05/1994DE4321949A1 Vibrator unit using piezoelectric resonator - has coupling between resonator and resonance element attached at oscillation mode
01/05/1994DE4301368A1 Vorrichtung und Verfahren zur Schwingungserregung Apparatus and method for vibrational excitation
01/05/1994DE4301367A1 Adjustable vibration drive with two unbalanced bodies e.g. for filter or conveyor - uses two AC drive motors coupled to two different AC systems, with different frequencies or phase, one of which is produced by semiconductor switch.
01/05/1994DE4221214A1 Electronic acoustic scarecrow for discouraging birds - has microcomputer based sound generator using digitised data in memory played back through unit mounted on pillar
01/05/1994CN2151813Y Improved fixing structure for supersonic vibrator
01/04/1994US5276376 Variable frequency ultrasonic generator with constant power output
01/04/1994US5275167 Acoustic transducer with tab connector
12/1993
12/29/1993EP0576307A1 Autosynchronous motor and electric traction system using an autosynchronous motor
12/29/1993EP0575363A1 Therapeutic endo-rectal probe, in particular for treatment of prostatic cancer
12/29/1993CN2150930Y Vibrator
12/28/1993US5274608 Sonar transducer
12/28/1993US5274296 Ultrasonic probe device
12/23/1993WO1993026054A1 Variable frequency ultrasonic generator with constant power output
12/23/1993WO1993025762A1 Improved drive mechanism for a vibratory compactor
12/23/1993DE4229156C1 Vibration treatment device for back or spinal injury - has head support attached to frame of treatment, and bed to prevent transmission of vibrations
12/21/1993US5271406 Low-profile ultrasonic transducer incorporating static beam steering
12/20/1993CA2097450A1 Control device for variable momennnt vibrator
12/15/1993EP0573704A1 Method and apparatus for generating seismic waves
12/15/1993CN2149253Y Ultrasonic energy exchanger
12/14/1993CA1325266C Sonic generator
12/11/1993CA2097972A1 Ac variable speed driving apparatus and electric vehicle using the same
12/09/1993WO1993024244A1 Underwater acoustic antenna having a surface sensor
12/07/1993US5268610 Acoustic ink printer
12/02/1993DE4233256C1 Schall- oder Ultraschallwandler Sonic or ultrasonic transducer
12/01/1993EP0489796A4 Fluid actuators
11/1993
11/30/1993US5267223 Electroacoustic transducer seal
11/30/1993US5267221 Backing for acoustic transducer array
11/30/1993US5266921 Method and apparatus for adjusting vehicle horns
11/25/1993WO1993023179A1 Vibratory screening apparatus
11/25/1993WO1993023178A1 Low frequency sonar projector and method
11/24/1993CN1078666A Ultrasonic vibration generation and use
11/23/1993US5263957 Ultrasonic scalpel blade and methods of application
11/18/1993EP0570177A2 Acoustic resonator
11/18/1993EP0569735A1 An apparatus for sealing by surface fusion of mutually facing surfaces of thermoplastic materials or coatings, and the use of a giant magnetostrictive powder composite for this purpose
11/18/1993EP0233940B1 Endoscopic ultrasonic aspirator with modified working tip and vibration apparatus thereof
11/17/1993CN2146313Y Pneumatic vibrator
11/11/1993DE4214913A1 Laboratory glassware shaker with integral damper system - reducing the tendency for the unit to wander around the bench
11/10/1993EP0569172A2 Improved controller for input-queued packet switch
11/10/1993EP0560811A4 Signalling device
11/10/1993EP0261230B1 Method and apparatus for ultrasonic surgical fragmentation
11/02/1993US5258413 Continuous ultrasonic devulcanization of valcanized elastomers
10/1993
10/27/1993EP0567426A2 Ultrasonic welding method
10/26/1993US5256920 Acoustic transducer
10/21/1993DE4210994A1 Vibrator for roll-and-press appts. mfg. concrete pipes - is based on crossed beams of steel vibrated vertically by eccentric electric actuators mounted on central circular plate
10/19/1993US5255265 Controller for input-queued packet switch
10/19/1993US5255059 Image forming apparatus
10/19/1993US5254900 Broad beam ultrasonic transducer
10/19/1993US5254504 Method of manufacturing ferroelectric MOSFET sensors
10/19/1993US5253542 Variable moment vibrator usable for driving objects into the ground
10/19/1993CA1323382C Active vibrating device servo magnetic suspension along three axis
10/12/1993US5251630 Pressure pulse generator having an electromagnetic pressure pulse source
10/07/1993DE4211279A1 Friction-welding machine for two thermoplastic components - has electromagnetic coil to vibrate one component against other end against springs attached to holder in plane containing vibration nodes
10/06/1993EP0564239A1 Ultrasonic transducer
10/06/1993CN2143145Y Vibration exciter with an eccentric wheel
10/05/1993US5250869 Ultrasonic transducer
10/01/1993CA2092929A1 Ultrasonic transducer
09/1993
09/30/1993DE4211284C1 Electronically controlled ground compactor - uses displacement of steering mass in axial direction of vibrator imbalance weights
09/29/1993EP0562326A1 Atmospheric ultrasonic transducer
09/29/1993CN1076802A Method and apparatus for adjusting vehicle horns
09/28/1993US5248216 Compactor
09/23/1993DE4208669A1 Adjusting ultrasonic generator to different loads - carrying out automatic impedance adjustment between generator and load by variable inductance
09/22/1993EP0560811A1 Signalling device.
09/22/1993CN2142372Y Multichannel rotary type ultrasonic generator
09/22/1993CN2142371Y Movable earth quake similation seismic source car
09/21/1993CA2056990C Electromagnetic resonant vibrator
09/16/1993WO1993018625A1 Method and apparatus for making of exact sonar-sounding body with optimal acoustic
09/16/1993WO1993017816A1 Oscillator for continuous casting mould
09/15/1993EP0559963A2 Backing for acoustic transducer array
09/14/1993CA1322226C Method and apparatus for ultrasonic surgical fragmentation and removal of tissue
09/14/1993CA1322111C Integral acoustic emission sensor for manufacturing processes and mechanical components
09/07/1993US5242385 Ultrasonic handpiece
09/02/1993WO1993016814A1 Apparatus for the generation of ultrasonic fields in liquids
09/01/1993EP0557780A1 Ultrasonic transducer with piezoelectric polymer foil
08/1993
08/31/1993US5239736 Method for making piezoelectric composites
08/31/1993CA1321829C Ultra-thin acoustic transducer and balloon catheter using same in imaging array subassembly
08/25/1993EP0556621A2 Feeder drive
08/24/1993US5239518 Low frequency sonar projector and method
08/24/1993US5239514 Narrow band magnetostrictive acoustic source
08/24/1993US5239219 Electromagnetic vibrating apparatus
08/24/1993CA1321467C Concrete block molding machine having continuously driven vibrating shaft mechanism which can be programmably vibrated and method of programmably vibrating such machines
08/19/1993WO1993015850A1 Ultrasonic surgical apparatus
08/19/1993DE4204029A1 Electromagnetic lifting and oscillating device e.g. for use in flat loudspeakers - has ferromagnetic core column with magnets either side which are surrounded by lifting and oscillating spool
08/19/1993CA2128090A1 Ultrasonic surgical apparatus
08/17/1993US5237542 Wideband, derivative-matched, continuous aperture acoustic transducer
08/17/1993CA2005878C Magnetostrictive transducer
08/12/1993DE4203967A1 System for determining and monitoring preset filling level in container - has piezoelectric vibration system with sensor for contacting filling medium in container if preset level is exceeded and evaluation circuit producing signal depending upon amplifier output frequency.
08/12/1993DE4203715A1 System for establishing or monitoring predetermined filling level in container - has two vibration elements arranged coaxially to each other which project in container contg. filling medium to be monitored one of which is fitted to diaphragm
08/11/1993EP0555162A1 Device enabling gas bubbles contained in a liquid composition to be dissolved
08/10/1993US5233980 Apparatus and method for generating shockwaves for the destruction of targets, particularly in extracorporeal lithotripsy
08/05/1993WO1993015373A1 Process and device for clearing antitank mines targetted to particular tank types
08/04/1993EP0553943A1 Test head for non-destructive testing
08/04/1993EP0553325A1 Probe for measuring acoustic fields of high intensity
08/04/1993EP0520037A4 Vinylidene cyanide alternating copolymers
08/03/1993US5231886 Non-metallic gear shaker
07/1993
07/31/1993WO1993015500A1 Method and apparatus for adjusting vehicle horns
07/28/1993EP0552696A2 Sound or ultrasound generating apparatus
07/27/1993US5231336 Actuator for active vibration control
07/27/1993US5230921 Flexible piezo-electric membrane