Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency

Industry

  • CPC
  • B06B1/00
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Sub Industries

B06B1/02making use of electrical energy B06B1/0207Driving circuits B06B1/0215for generating pulses B06B1/0223for generating signals continuous in time B06B1/023and stepped in amplitude B06B1/0238of a single frequency B06B1/0246with a feedback signal B06B1/0253taken directly from the generator circuit B06B1/0261taken from a transducer or electrode connected to the driving transducer B06B1/0269for generating multiple frequencies B06B1/0276with simultaneous generation B06B1/0284with consecutive, i.e. sequential generation B06B1/0292Electrostatic transducers B06B1/04operating with electromagnetism B06B1/045using vibrating magnet, armature or coil sytem B06B1/06operating with piezo-electric effect or with electrostriction B06B1/0603using a piezo-electric bender B06B1/0607using multiple elements B06B1/0611in a pile B06B1/0614for generating several frequencies B06B1/0618of piezo- and non-piezo-electric elements B06B1/0622on one surface B06B1/0625Annular array B06B1/0629Square array B06B1/0633Cylindrical array B06B1/0637Spherical array B06B1/064with multiple active layers B06B1/0644using a single piezo-electric element B06B1/0648of rectangular shape B06B1/0651of circular shape B06B1/0655of cylindrical shape B06B1/0659of U-shape B06B1/0662with an electrode on the sensitive surface B06B1/0666used as a diaphragm B06B1/067which is used as, or combined with, an impedance matching layer B06B1/0674and a low impedance backing B06B1/0677and a high impedance backing B06B1/0681and a damping structure B06B1/0685on the back only of piezo-electric elements B06B1/0688with foil-type piezo-electric elements B06B1/0692with a continuous electrode on one side and a plurality of electrodes on the other side B06B1/0696with a plurality of electrodes on both sides B06B1/08operating with magnetostriction B06B1/085using multiple elements B06B1/10making use of mechanical energy B06B1/12operating with systems involving reciprocating masses B06B1/14the masses being elastically coupled B06B1/16operating with systems involving rotary unbalanced masses B06B1/161Adjustable systems B06B1/162Making use of masses with adjustable amount of eccentricity B06B1/163the amount of eccentricity being only adjustable when the system is stationary B06B1/164the amount of eccentricity being automatically variable as a function of the running condition B06B1/165with fluid masses or the like B06B1/166Where the phase-angle of masses mounted on counter-rotating shafts can be varied B06B1/167Orbital vibrators having masses being driven by planetary gearings, rotating cranks or the like B06B1/168Rotary pendulum vibrators B06B1/18wherein the vibrator is actuated by pressure fluid B06B1/183operating with reciprocating masses B06B1/186operating with rotary unbalanced masses B06B1/20making use of a vibrating fluid

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Patents Applicationslast 30 patents