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| Number | Title | Issue Date |
| 7675253 | Linear actuator using magnetostrictive power element A linear actuator includes a substantially cylindrical magnetostrictive element disposed in a housing. A retainer is cooperatively engaged with the housing and an exterior of the magnetostrictive element such that relaxed portions of the magnetostrictive element are... | 03/09/2010 |
| 7304467 | Circuit for simultaneous testing of electricity meters with interconnected current and voltage circuits Circuit arrangement for simultaneous testing of electricity meters with interconnected current and voltage circuits comprising plurality of said meters having all voltage terminals associated with the same phase connected parallel to respective voltage source and ea... | 12/04/2007 |
| 7298060 | Magnetoelectric devices and methods of using same The operational frequency of existing magnetoelectric materials having metallic or ceramic magnetostrictive materials and ceramic piezoelectric materials may be limited to a few kilohertz due to the presence of eddy-current losses in the metallic magnetostrictive ph... | 11/20/2007 |
| 7275440 | Loop-shaped ultrasound generator and use in reaction systems Ultrasound for use in chemical reactions is generated by an electromagnet formed from an ultrasound transducer whose central feature is a loop of magnetostrictive material wound with coils oriented to produce an oscillating magnetostrictive force when an oscillating... | 10/02/2007 |
| 7273483 | Apparatus and method for alerting generator functions in an ultrasonic surgical system The present invention provides a system for surgery which includes an ultrasonic hand piece having a end-effector, a console having a digital signal processor (DSP) for controlling the hand piece, and a memory disposed in the end-effector. The generator console send... | 09/25/2007 |
| 7244262 | Method for detecting transverse vibrations in an ultrasonic hand piece A method for detecting transverse mode vibrations in an ultrasonic hand piece/blade is achieved by monitoring the power delivered to the hand piece/blade to determine whether it increases as expected when power levels applied to the hand piece/blade are changed. Whi... | 07/17/2007 |
| 7231060 | Systems and methods of generating control signals Separating a source in a stereo signal having a left channel and a right channel includes transforming the signal into a short-time transform domain; computing a short-time similarity measure between the left channel and the right channel; classifying portions of th... | 06/12/2007 |
| 7218067 | Magnetic actuator drive for actuation and resetting of magnetic actuation materials A magnetic actuator is provided including a magnetic field-actuated material and a plurality of interconnected electrically conducting coils, each coil including a number of wire turns arranged relative to at least one other coil to produce at the magnetic field-act... | 05/15/2007 |
| 7077853 | Method for calculating transducer capacitance to determine transducer temperature A method for calculating the capacitance of a transducer (C0) without knowing the exact resonance frequency of a transducer/blade combination is achieved by sweeping across a broad frequency range which contains resonant and non-resonant frequencies where... | 07/18/2006 |
| 7038399 | Methods and apparatus for providing power to lighting devices Methods and apparatus for providing power to devices via an A.C. power source, and for facilitating the use of LED-based light sources on A.C. power circuits that provide signals other than standard line voltages. In one example, LED-based light sources may be coupl... | 05/02/2006 |
| 7011520 | Two part ultrasonic swivel insert, with one part rotatable relative to the other An ultrasonic insert carries a rotary bearing adjacent to the transducer. The bearing slidably engages an ultrasonic handpiece. When seated in the handpiece, the insert is substantially decoupled, on a rotary axis, from the handpiece. A rotary force need only be app... | 03/14/2006 |
| 7010978 | Electrically operated tuning fork An electrically operated tuning fork apparatus includes a tuning fork having a base and a pair of tines. The tines have tips remote from the base, and are formed of or include material in which a magnetic field can be induced. The tuning fork apparatus also includes... | 03/14/2006 |
| 7004016 | Probe system for ultrasonic processing tank The invention provides systems, methods and apparatus for processing delicate parts within a process tank such as an ultrasonic tank. Typically, one or more transducers connect to the tank and respond to drive signals from a generator to produce ultrasound within pr... | 02/28/2006 |
| 7002310 | Piezo-based encoder with magnetic brake for powered window covering The position and speed and, in some embodiments, direction of rotation of a motor for turning the rod of an object such as a window covering is determined by placing a braking magnet next to the motor and a piezoelectric element between the braking magnet and motor.... | 02/21/2006 |
| 6977495 | Detection circuitry for surgical handpiece system Various circuit configurations for use in switch assembly used in a surgical hand piece system are provided. The circuit configuration provide a number of functions such as permitting the presence and direction of conductivity to be detected. The circuit configurati... | 12/20/2005 |
| 6946773 | Apparatus and methods for cleaning and/or processing delicate parts The invention utilizes harmonics of certain clamped ultrasound transducers to generate ultrasound within the liquid of an ultrasonic tank and in a frequency range of between about 100 khz to 350 khz (i.e., “microsonic” frequencies). The application of microsonic... | 09/20/2005 |
| 6918300 | System and method for determining the resonant frequency and/or amplitude of an oscillating appliance such as a power toothbrush A system and corresponding method for determining the frequency and/or amplitude of an oscillating apparatus, which includes a driving assembly having a stator portion and an armature portion, and a driving signal circuit which supplies a driving signal to the stato... | 07/19/2005 |
| 6914364 | Apparatus and methods for cleaning and/or processing delicate parts The invention utilizes harmonics of certain clamped ultrasound transducers to generate ultrasound within the liquid of an ultrasonic tank and in a frequency range of between about 100 khz to 350 khz (i.e., “microsonic” frequencies). The application of microsonic... | 07/05/2005 |
| 6897628 | High-power ultrasound generator and use in chemical reactions Ultrasound for use in promoting a chemical reaction is generated by an electromagnet formed from a pair of magnetostrictive prongs wound with coils that are oriented to produce an oscillating magnetostrictive force when an oscillating voltage is applied, in conjunct... | 05/24/2005 |
| 6888058 | Electronic musical instrument Main speakers are arranged on the enclosure front surface of an electronic piano. Auxiliary speakers (18L, 18R) are arranged on the rear surface of the enclosure. Microphones are arranged in close proximity of the main speakers. A performance sound is ... | 05/03/2005 |
| 6803738 | Magnetic actuation and positioning Magnetic forces are used as a controlled actuation mechanism to move and position objects of interest. In one embodiment, a first spherical surface has at least one magnetic positioner attached. A second spherical surface is positioned to move relative to the first ... | 10/12/2004 |
| 6720684 | Method of control for a self-sensing magnetostrictive actuator A method of controlling the amount of magnetostriction in a magnetostrictive actuator is provided. The method compensates for non-ideal influences, such as imperfections in the magnetostrictive member, prestress, stress or load, quality of the magnetic circuit, and ... | 04/13/2004 |
| 6617754 | Circuit for the dynamic control of ceramic solid-state actuators The invention relates to a circuit arrangement for the dynamic control of ceramic solid-state actuators, such as piezotranslators with energy recovery by means of magnetic intermediate stores and/or storage capacitors as well as by clocked switches. For a... | 09/09/2003 |
| 6489695 | Efficiency maximized conversion of electrical to mechanical energy by magnetostrictive transduction The efficiency of converting electrical energy into a mechanical output is maximized by alternatively matching selection of power supply for the drive coil applying a magnetic field to transducer element made of a magnetostrictive material having a near-z... | 12/03/2002 |
| 6410999 | Magnetostrictive magnetically controlled sprag locking motor Actuator elements of a motor system are cyclically expanded magnetostrictively by energization of excitation coils to impart driving forces directly to a driven load through roller sprag means under preload bias in locking contact with a race formation in... | 06/25/2002 |
| 6328566 | ID system for ultrasonic dental inserts A color coding system and method for visually identifying and distinguishing ultrasonic dental tool inserts. The invention employs a color-coded removable cap that is used to secure a handgrip, which can also be color-coded, to the insert. The caps and/or... | 12/11/2001 |
| 6246132 | Magnetostrictive actuator A magnetostrictive actuator, comprising: a magnetostrictive member which elongates upon application of a magnetic field; a translating member mechanically coupled to the magnetostrictive member, for translating the change in length of the magnetostrictive... | 06/12/2001 |
| 6188186 | Magnetostriction oscillator driving circuit and method A circuit and method for driving a magnetostriction oscillator which is used for generating a high output ultrasonic wave by using a pulse width modulation is provided. In the circuit, a controller outputs first and second variable digital signals in orde... | 02/13/2001 |
| 6084363 | Drive pulse generating apparatus for drive device using electromechanical transducer A drive pulse generating apparatus capable of freely adjusting drive speed of a drive device using an electromechanical transducer for adjusting the width of a rising portion and the width of a falling portion of a sawtooth waveform pulse having a gradual... | 07/04/2000 |
| 5980251 | Laminated magnetostrictive transducer A magnetostrictive transducer including a plurality of magnetostrictive laminates each having a first end and a second end. The first and second ends of the laminates include openings. The laminates are arranged in a stacked configuration and bonded toget... | 11/09/1999 |
| 5754016 | Method of continuous control of tip vibration in a dental scalar system The invention provides a method of operating a dental scalar system having a vibrating scaling tip by continuously monitoring the amplitude and frequency of vibration of the tip which provides scaling power to a tooth in a patient's mouth. The amplitude a... | 05/19/1998 |
| 5705863 | High speed magnetostrictive linear motor A linear actuator having a magnetostrictive rod is magnetically energized der analog logic control in operative relation to a pair of electrically disengaged one-way locking devices, one of which is interconnected with the actuator through a stroke multip... | 01/06/1998 |
| 5703553 | Magnetostrictive active strut A magnetostrictive active member configured to withstanding significant bending moments and having a prestress mechanism that is adjustable for maintaining optimal performance of an integral magnetostrictive element. The magnetostrictive active member inc... | 12/30/1997 |
| 5701043 | High resolution actuator A magnetostrictive material is used to reduce a displacement by a factor of about 1000 to achieve displacements with subnanometer resolution. The range of motion is about 100 μm. In one embodiment, a longitude of a magnetostrictive material is attached e... | 12/23/1997 |
| 5317223 | Method and device in magnetostrictive motion systems Method and device for making a first body (8), having a magnetostrictive properties, and a second body (6), against which said first body is in bearing contact with a certain grip between the contact surfaces, to move with respect to each other while subs... | 05/31/1994 |
| 5270595 | Dynamic thermal compensation for a magnetostrictive actuator A magnetostrictive linear actuator, responsive to an external signal, including a housing assembly that encloses a magnetostrictive force train assembly, an excitation means disposed on a component of one assembly, as well as a thermal compensation means ... | 12/14/1993 |
| 5249117 | Adaptive control systems An adaptive controller employing variable structure techniques being particularly applicable to the control of processes operated by a magnetostrictive actuator. The problem of accommodating the non-linearity and hysteresis in the magnetostrictive actuato... | 09/28/1993 |
| 5184037 | Magnetostriction type actuator A magnetstriction type actuator is capable of reducing an input power loss and increasing an output, which actuator is reduced in size and is applicable to a vibrator. The actuator comprises: displacement generating means formed of a magnetic substance ha... | 02/02/1993 |
| 5172020 | Magnetic core for AC electrical equipments A magnetic core employed in AC motors, transformers and the like includes a first core portion formed by laminating silicon steel sheets each containing 3.5% silicon, the first core portion having two ends in the direction that the sheets are laminated, a... | 12/15/1992 |
| 5165131 | Teeth cleaning apparatus A teeth cleaning apparatus has a brush pivotally mounted in a brush holder. The brush has a teeth cleaning member such as bristles formed thereon. A vibrator exerts a vibratory force on the brush so that the teeth cleaning member moves back and forth in s... | 11/24/1992 |
