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)
12/1981
12/29/1981US4307964 System for maintaining high resonance during sonic agglomeration
12/23/1981EP0042315A1 Method of inducing a reciprocating movement and application to a straw-baler
12/16/1981EP0041664A1 Process for the manufacture of an ultrasonic transducer device
12/15/1981US4305252 Centering and cooling equipment for a hydraulic vibration generator
12/08/1981US4305141 Low-frequency directional sonar systems
12/08/1981US4305140 Low frequency sonar systems
12/08/1981US4305014 Piezoelectric array using parallel connected elements to form groups which groups are ≈1/2λ in width
11/1981
11/25/1981EP0040375A1 Ultrasonic transducer array
11/25/1981EP0040374A1 Ultrasonic transducer and method of manufacturing the same
11/24/1981US4302728 Ultrasonic wave oscillator circuit with output meter
11/17/1981US4300843 Streaming vibrator with an uninterrupted rolling area and an unloaded blade
11/17/1981CA1112754A1 Electromagnetic transducer
11/17/1981CA1112481A1 Vibration generator with adjustable eccentric weight
11/17/1981CA1112480A1 Variable mechanical vibrator
11/11/1981EP0039612A1 Multitone signalling device
11/10/1981US4300131 Device for indicating an abnormal condition in an ultrasonic nebulizer
11/10/1981US4300083 Constant amplitude controller and method
11/10/1981CA1112075A1 Vibrating systems
11/03/1981CA1111948A1 Waterbed vibrator
10/1981
10/28/1981EP0038329A1 Pneumatic diaphragm valve pulsator
10/27/1981US4297607 Sealed, matched piezoelectric transducer
10/27/1981US4297602 Magnetostrictive co-ordinate plate for co-ordinate reader
10/27/1981CA1111283A1 Variable amplitude vibratory apparatus
10/20/1981US4296486 Shielded electromagnetic acoustic transducers
10/20/1981US4296349 Ultrasonic transducer
10/20/1981US4296348 Interdigitated electrode ultrasonic transducer
10/14/1981EP0037428A1 Unbalanced-mass vibrator with switching clutch
10/07/1981EP0037109A1 Device for removing birds and small rodents
10/06/1981US4293231 Bearingless vibrator
09/1981
09/30/1981EP0036577A1 Ultrasonic transducer array
09/23/1981EP0036186A2 Method for pulse activation of a piezo-electric sound transmitter-transducer
09/17/1981WO1981002593A1 Control for plate vibrators
09/15/1981US4290053 Sound effects producer
09/15/1981US4289139 Ultrasonic transducer probe
09/15/1981US4289042 Vibrator with eccentric weights
09/09/1981EP0035015A1 High frequency reaction mass and hydraulic cylinder assembly
09/08/1981US4288165 Vibratory actuator incorporating hydrodynamic journal bearing
09/08/1981US4287779 Directional-action mechanical vibrator and a mechanical system for converting rotary motion into reciprocating motion
09/08/1981CA1108745A1 Piezoelectric bimorph or monomorph bender structure
09/08/1981CA1108744A1 Low frequency inertia balanced dipole hydrophone
08/1981
08/26/1981EP0034322A2 Ultrasonic transmitter
08/25/1981US4285405 Oscillator for reciprocating tool or other device
08/18/1981US4284921 Polymeric piezoelectric transducer with thermoformed protuberances
08/18/1981US4284038 Reciprocating drive means
08/18/1981US4283957 Torsional exciter for a rotating structure
08/18/1981CA1107383A1 Double serrated piezoelectric transducer
08/11/1981US4283649 Piezoelectric ultrasonic transducer with resonator laminate
08/11/1981CA1106730A1 Centering and cooling equipment
08/04/1981CA1106261A1 Hydraulic oscillator
08/04/1981CA1106211A1 Electronic siren
07/1981
07/29/1981EP0032739A1 A multielement acoustic transducer, a method of manufacturing the same, and use of the same in an acoustic imaging instrument
07/28/1981US4281298 Flexural transducer
07/28/1981US4280396 Hydraulic oscillator
07/28/1981US4280368 Devices for producing vibratory forces
07/28/1981CA1106053A1 Hand held ultrasonic nebulizer
07/21/1981US4280123 Multitone signaling device
07/08/1981EP0031352A1 An eccentric element.
07/07/1981US4277758 Ultrasonic wave generating apparatus with voltage-controlled filter
07/07/1981US4277712 Acoustic electric transducer with slotted base
07/07/1981US4277711 Acoustic electric transducer with shield of controlled thickness
07/07/1981US4277710 Control circuit for piezoelectric ultrasonic generators
06/1981
06/23/1981US4275388 Piezoelectric audible alarm frequency self-calibration system
06/23/1981US4275363 Method of and apparatus for driving an ultrasonic transducer including a phase locked loop and a sweep circuit
06/16/1981CA1103344A1 Electroacoustic sandwich transducer with bonded joints
06/10/1981EP0029999A1 Vibrator
06/09/1981US4272366 Heavy duty two mass vibratory machine
06/09/1981US4271705 Method and device for generating acoustic pulses
06/02/1981US4271371 Driving system for an ultrasonic piezoelectric transducer
06/02/1981US4270396 Vibrator
05/1981
05/26/1981US4269067 Method and apparatus for focusing elastic waves converted from thermal energy
05/19/1981US4268912 Directional hydrophone suitable for flush mounting
05/13/1981EP0028531A1 Vibratory device and dental scaler incorporating it
05/12/1981US4266434 Rotating oscillatory motion power take-off
05/12/1981CA1100783A1 Drive box for vibrating machines
05/05/1981US4265130 Vibration generator with adjustable eccentric weight
05/05/1981US4265129 Orbiting mass oscillator with oil film cushioned bearings
05/05/1981CA1100341A1 Driver circuit for tone generator
04/1981
04/28/1981US4264837 Ultrasonic atomizer with automatic control circuit
04/28/1981CA1100223A1 Fluid operated seismic generator
04/21/1981US4262549 Variable mechanical vibrator
04/21/1981US4262399 Ultrasonic transducer fabricated as an integral park of a monolithic integrated circuit
03/1981
03/31/1981US4259732 Transducer assembly for self-calibration
03/24/1981US4257648 Non-resonant cyclic drive system employing rectification of the cyclic output
03/18/1981EP0025408A2 Directionally variable vibration generator
03/18/1981EP0025215A2 Contact for an ultrasonic transducer
03/18/1981EP0025092A1 Ultrasonic transducer assembly and process for its production
03/17/1981US4256987 Constant current electrical circuit for driving piezoelectric transducer
03/17/1981US4256014 Piston vibrator
03/17/1981CA1097790A1 Rodent repellor
03/17/1981CA1097789A1 Apparatus for ultrasonic measurement
03/11/1981EP0024805A1 Hydraulic vibrator
03/11/1981EP0024748A2 Construction and/or application in relation to the generation or the use of pressures, forces, flows and movements in and by means of hydraulic or hydro-pneumatic systems
03/10/1981US4255800 Method and apparatus for locating underwater objects
03/10/1981US4255254 Delayed counterweight vibrator apparatus
03/10/1981US4254661 Ultrasonic transducer array
03/03/1981US4253508 Selective filtering of tobacco smoke by enhanced filtration efficiency
03/03/1981CA1096656A1 Vibratory mechanism
02/1981
02/19/1981WO1981000460A1 High frequency reaction mass and hydraulic cylinder assembly
02/17/1981US4251031 Vibratory atomizer
02/17/1981US4250760 Drive assembly for pavement planing apparatus
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