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3693417 |
MICROHARDNESS TESTER REGULATED BY A MAGNETOSTRICTIVE CONTROL ARRANGEMENT
A hardness testing device is disclosed which includes a driving motor, an indenter and a force compensating mechanism for regulating the force transmitted to the indenter from the driving motor.
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3691437 |
CONTROL MEANS FOR ELECTRIC TOOLS
A magnetostrictive transducer is vibrated at an ultra-sonic frequency by a driver winding supplied with energizing current from a generator, the output level of which is changed through a signal...
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3689783 |
ULTRASONIC TRANSDUCER WITH HALF-WAVE SEPARATOR BETWEEN PIEZOELECTRIC CRYSTAL MEANS
An ultrasonic transducer comprises metal front and rear masses, two piezoelectric crystal means sandwiched therebetween, and a thick metal separator nearly one half wavelength thick between the...
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3684904 |
DEVICE FOR PRECISION DISPLACEMENT OF A SOLID BODY
A device for precision displacement of a solid body with respect to a bearing surface, having at least two supports of elastic material, each of the supports being rigidly fixed at one end thereof...
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3670944 |
MINIATURE ULTRASONIC BONDING DEVICE
An ultrasonic bonding system is arranged so that the magneto-strictive transducer is situated above and at right angles to a bonding tip. The transducer is held by a mounting means and lateral...
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3654540 |
MAGNETOSTRICTIVE DRIVE CIRCUIT FEEDBACK COIL
A feedback coil is placed in surrounding relation to a magnetostrictive member which is vibrating under the influence of a drive coil being energized by a power amplifier. Ideally, the voltage...
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3639861 |
MAGNETOSTRICTIVE FILTER AND STRAIN GAUGE
One or more layers of magnetostrictive material are arranged to have a meandering current running therethrough or through a closely spaced sheet of conductive material, to provide longitudinal,...
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3633424 |
MAGNETOSTRICTIVE ULTRASONIC TRANSDUCER
A magnetostrictive transducer in which unwanted pulses due to internal reflections are avoided by placing the energizing winding at or near one end of a magnetostrictive rod, the rod having a...
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3634742 |
MAGNETOSTRICTIVE APPARATUS AND PROCESS
Electromechanical transducer core containing magnetostrictive material is energized by two electromagnetic fields which are oriented transversely to each other and controlled to vary the direction...
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3629726 |
OSCILLATOR AND OSCILLATOR CONTROL CIRCUIT
An oscillator circuit adapted particularly for use with transducers for producing energy in the ultrasonic frequency range in which a combination of feedback signals representative of the voltage...
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3628071 |
MECHANICAL AMPLITUDE TRANSFORMER
A mechanical amplitude transformer for use with sonic or ultrasonic energy comprises two members of different density material joined to each other by a metallurgical bond and dimensioned to...
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3614486 |
LEVER MOTION MULTIPLIER DRIVEN BY ELECTROEXPANSIVE MATERIAL
Electroexpansive material such as a stack of piezoelectric discs is employed as a driver for an undamped spring-mass system, such as a lever for motion multiplication. A displacement, step or other...
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3614484 |
ULTRASONIC MOTION ADAPTER FOR A MACHINE TOOL
An ultrasonic motion adapter for a machine tool comprises two elongated coaxially disposed members coupled to each other with one of the members being adapted to oscillate as a half wavelength...
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3612967 |
TWO-PHASE VIBRATING DEVICE
A high-frequency vibrator for pushing pipe underground and plowing in underground cable is disclosed. An alternating electromagnetic field is established in a generally S-shaped magnetic core by...
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3612924 |
MASS LOADED MAGNETOSTRICTIVE TRANSDUCER
This device is a magnetostrictive transducer having several magnetostrictive elements spaced one from the other and having two end bodies, one mounted at each end of the magnetostrictive elements...
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3602420 |
ULTRASONIC BONDING DEVICE
An ultrasonic bonding system is arranged so that the ultrasonic transducer is situated above and parallel to a bonding tip. A bellcrank functions to change the vibratory motion of the transducer,...
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3601084 |
ULTRASONIC-VIBRATION-TRANSMITTING MEMBER
A vibration-transmitting member having large dimensions in planes perpendicular to the direction of vibration transmitted and adapted to be resonant in the sonic or ultrasonic frequency range is...
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3591862 |
ULTRASONIC MOTOR TRANSMISSION SYSTEM
The invention covers a system for driving transmission members, particularly made from glass and of a relatively small diameter, at an ultrasonic rate in which the transmission member is coupled to...
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3586936 |
VISUAL TUNING ELECTRONIC DRIVE CIRCUITRY FOR ULTRASONIC DENTAL TOOLS
Solid state electronic circuitry for driving the magnetostrictive transducer of ultrasonic dental tools is described, wherein tuning to resonance is controlled by circuit adjustment to maximum...
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3578993 |
VIBRATORY ENERGY GENERATORS
Energy emitted in a rearward direction from vibratory energy transducers is conveyed from the rear end of a transducer to another by coupling members of equal length joining similar portions of the...
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3577108 |
ANNULAR MAGNETOELASTIC TRANSDUCER
An annular magnetoelastic transducer has a core in the shape of a cylindrical ring. The core is manufactured by winding a striplike magnetostrictive material so that the plane of the strip is...
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3569718 |
DEVICE FOR THE FINE ADJUSTMENT OF PHOTOMASKS WITH RESPECT TO SEMICONDUCTOR ELEMENTS
In the manufacture of semiconductor devices with the aid of photomasks, the correct position of the photomask with respect to the semiconductor body to be processed is adjusted by the use of...
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3558937 |
SONIC TRANSDUCER APPARATUS
This invention relates generally to means of utilizing in a work environment a high-power, high-Q electromechanical transducer; and particularly means of loading a high-power electromechanical...
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3544867 |
ACOUSTIC TRANSDUCER WITH HALL EFFECT FEEDBACK
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3544866 |
ELECTRONIC DRIVE CIRCUITRY FOR ULTRASONIC DEVICES
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3543059 |
FLUTED CYLINDER FOR UNDERWATER TRANSDUCER
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3533860 |
MAGNETOSTRICTIVE MATERIAL AND ELEMENTS
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3517227 |
TRANSDUCER WITH VARIABLE PERMEABILITY MAGNETIC MEMBER
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3516441 |
SUSPENSION ASSEMBLY FOR BOBBIN IN SERVO-VALVE
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3515965 |
LOW FREQUENCY MAGNETOSTRICTIVE FLEXURAL TRANSDUCER
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3505657 |
TORSIONAL DELAY LINE AND IMPRESSED FLUX LINKAGE INTERACTION DEVICE
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3504282 |
MAGNETOSTRICTIVE CURRENT RESPONSIVE MEANS AND TRANSDUCER MEANS UTILIZING CHANGES IN DIMENSIONS OF THE MAGNETOSTRICTIVE MEANS TO PRODUCE A VARIABLE SIGNAL WHICH VARIES WITH CURRENT VARIATIONS
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3495104 |
ULTRASONIC TRANSDUCER
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3488851 |
ULTRASONIC DEVICES
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3488587 |
MAGNETOSTRICTIVE ELECTROMECHANICAL GALVANOMETER APPARATUS
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3484630 |
ULTRASONIC MAGNETOSTRICTIVE TRANSDUCER ELEMENT
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3473466 |
ELECTROSTRICTIVE PRINT HAMMER ACTUATOR IN HIGH SPEED PRINTERS
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3474271 |
MAGNETOSTRICTIVE TRANSDUCER APPARATUS
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3471724 |
MAGNETOSTRICTIVE VIBRATOR FOR HIGH FREQUENCY MACHINING OF HARD MATERIALS
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3470400 |
SINGLE BEAM FORCE TRANSDUCER WITH INTEGRAL MOUNTING ISOLATION
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3470402 |
MAGNETOSTRICTIVE VIBRATION MOTOR
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3464042 |
DEVICE FOR MEASURING PHYSICAL QUANTITY
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3459126 |
CONTROL DEVICES EMPLOYING MAGNETOSTRICTIVE MATERIALS
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3458736 |
LAMINATED MAGNETOSTRICTIVE TRANSDUCER APPARATUS
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3457463 |
METHOD AND APPARATUS FOR GENERATING ELECTRIC CURRENTS OF SMALL MAGNITUDE
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3448304 |
VIBRATOR DEVICE
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3439199 |
MAGNETOSTRICTIVE UNIT
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3434074 |
HIGH SPEED,WIDE FREQUENCY RANGE FEEDBACK CIRCUIT
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3427480 |
PIEZOELECTRIC CLEANING DEVICE
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3419825 |
Torsional delay line transducer
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