| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310026000 | Magnetostrictive | 25 |
| 20090039714 | Magnetostrictive FeGa Alloys - A low-cost, thermomechanical method for manufacturing [001] textured FeGa alloys is described. The method includes hot rolling a FeGa cast ingot to break down the cast structure, a two-stage warm rolling with an intermediate anneal, and then a final texture anneal that resulted in recrystallization and a recrystallization-induced texture. The FeGa ingot contains a grain growth agent that was used to restrain grain growth of the FeGa material in the undesired crystallographic direction. A protective steel sheath can be placed around the FeGa material during processing to avoid direct contact of the FeGa and the rolls during the hot and warm rolling process steps and also avoid oxidation of the alloy ingot. FeGa alloys with a very strong [001] texture and a large magnetostriction along [001] crystallographic direction were obtained using this method. FeGaBe alloys and new methods for making them are also described. | 02-12-2009 |
| 20100117463 | 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 frictionally retained in the retainer. An actuator rod is functionally coupled to one longitudinal end of the magnetostrictive element. A biasing device is disposed between the housing and the retainer to maintain the retainer in lateral compression. The actuator includes magnets arranged to induce peristaltic motion in the magnetostrictive element. | 05-13-2010 |
| 20100127582 | METHOD AND DEVICE FOR ENERGY GENERATION - A method and device for using magnetostriction to generate electricity from fluid motion. The device includes a first structural component, an outer housing, and a strain structure. The outer housing substantially circumscribes the first structural component and at least partially defines an annular space between the first structural component and the outer housing. The strain structure is coupled within the annular space between the first structural component and the outer housing. The strain structure experiences a change in physical strain imposed by a bearing in response to a relative movement between the bearing and the strain structure. The strain structure includes a magnetostrictive material to generate a magnetic field in response to the change in the physical strain. | 05-27-2010 |
| 20100244591 | Method and apparatus for monitoring wall thinning of a pipe using magnetostrictive transducers and variation of dispersion characteristics of broadband multimode shear horizontal (SH) waves - Magnetostrictive transducers for monitoring wall thinning in a pipe, and an apparatus and method for monitoring wall thinning in a pipe using magnetostrictive transducers are provided. The magnetostrictive transducers generate broadband multimode shear horizontal (SH) waves, and allow the generated SH waves to travel along the pipe, thus correctly monitoring a status of the wall thinning of the pipe. The apparatus includes a transmitting transducer which is installed outside of a pipe and generates shear horizontal (SH) waves traveling along the pipe, a receiving transducer which is spaced apart from the transmitting transducer and measures the shear horizontal (SH) waves traveling along the pipe, and a controller for monitoring wall thinning of the pipe by exciting and measuring output signals of the transmitting and receiving transducers. | 09-30-2010 |
| 20100277011 | ACTUATOR USING MAGNETIC FORCE, AND DRIVE DEVICE AND SENSOR USING THE SAME - To provide an actuator that can flexibly and softly move like muscles, can maintain a stable operation over a long period of time, can generate a strong driving force, has a rapid input response, has a favorable sensitivity, has a high energy conversion efficiency, and can be accurately controlled. | 11-04-2010 |
| 20110018368 | HIGH-PERFORMANCE ULTRASONIC TRANSDUCER AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to an ultrasonic transducer, comprising an ultrasonic flange and a magnetostrictive driver, wherein the driver is connected to a contact surface of the ultrasonic flange that faces the same, and wherein the driver and the ultrasonic flange are connected in the region of the contact surface by means of electron beam welding and/or laser beam welding. The contact surface is configured by the bottom of at least one receiving pocket, which receives the end of the driver on the ultrasonic flange side, and at least one receiving pocket is configured in a pedestal-like elevation of the end of the ultrasonic flange facing the driver, and the pedestal-like elevation is higher than the depth of the receiving jackets configured therein. | 01-27-2011 |
| 20110316362 | APPARATUS FOR HARVESTING ELECTRICAL POWER FROM MECHANICAL ENERGY - An apparatus for harvesting electrical power from mechanical energy is described. The apparatus includes: a flux path. The flux path includes: a magnetic material having a magnetic property that is a function of stress on the magnetic material; a first magnetically conductive material proximate the magnetic material; a magnet in the flux path, wherein a magnetomotive force of the magnet causes magnetic flux; and a component configured to transfer changes in load caused by an external source to the magnetic material. | 12-29-2011 |
| 20120091829 | CONTACT SH-GUIDED-WAVE MAGNETOSTRICTIVE TRANSDUCER - A contact shear horizontal (SH) mode guided-wave magnetostrictive transducer including: a transduction band which is disposed on a surface of an object to be tested and in which electromagnetic acoustic transduction occurs; and radio frequency (RF) coils disposed on the transduction band, wherein the transduction band includes a plate-shaped solenoid including a magnetostrictive strip in which the electromagnetic acoustic transduction for transmitting or receiving SH mode guided waves occurs, and solenoid coil wound in a spiral form along a circumference of the magnetostrictive strip so as to form a bias magnetic field in a lengthwise direction of the magnetostrictive strip, and the RF coils are used to form a dynamic magnetic field in a widthwise direction of the magnetostrictive strip or to detect a change of magnetic flux in the magnetostrictive strip. | 04-19-2012 |
| 20120293023 | Voltage Tuning of Microwave Magnetic Devices Using Magnetoelectric Transducers - Tunable microwave magnetic devices that provide increased performance with reduced size, weight, and cost. The disclosed microwave magnetic devices are voltage-tunable devices that include ferrite substrates. To tune the devices, the magnetic permeability of the respective ferrite substrates is varied by external, voltage-tuned, magnetic fringe fields created by one or more magnetoelectric (ME) transducers. | 11-22-2012 |
| 20120326536 | VIBRATION ENERGY HARVESTING APPARATUS - An apparatus for harvesting energy is described. The apparatus includes a vibration component and a moving mass. The vibration component has a first and second end and further includes a magnetostrictive material. The vibration component further includes a conduction coil wrapped around the magnetostrictive material. The moving mass is coupled to the second end of the vibration assembly. The mass is configured to move in an oscillating path in response to forces acting on the vibration energy harvesting apparatus, inducing strain on the magnetostrictive material. The strain on the magnetostrictive material changes a magnetic property of the magnetostrictive material, inducing electrical energy in the conduction coil wrapped around the magnetostrictive material. Other embodiments of the apparatus are also described. | 12-27-2012 |
| 20130002056 | MECHANICAL ENERGY HARVESTER - Embodiments of an apparatus for harvesting electrical power from fluid motion are described. The apparatus includes a magnetostrictive component having an internal pre-stressed magnetostrictive core. A magnetic property of the magnetostrictive core is configured to change with changes in stress within the magnetostrictive core along at least one direction within the magnetostrictive component. Also, forces at least partially due to fluid motion results in changes of stress within the magnetostrictive core and consequently change the magnetic property. The magnetostrictive component is further configured such that the change in the magnetic property will result in a change in the magnetic flux, which can be used to generate electrical power. | 01-03-2013 |
| 20130002057 | ACTUATOR - Actuator having a drive element ( | 01-03-2013 |
| 20130033130 | ENERGY HARVESTING METHODS AND DEVICES, AND APPLICATIONS THEREOF - An apparatus harvests electrical power from mechanical energy. The apparatus includes first and second load-bearing structures, a plurality of magnetostrictive elements, and an electrical circuit or coil. The load-bearing structures experience a force from an external source. The magnetostrictive elements are arranged between the load-bearing structures. The load-bearing structures transfer at least a portion of the force to at least one of the magnetostrictive elements. In this way, at least one of the magnetostrictive elements experiences the force transferred from the load-bearing structures. The force on the magnetostrictive element causes a change in magnetic flux of the magnetostrictive element. The electrical circuit or coil is disposed within a vicinity of the magnetostrictive element which experiences the force. The electrical circuit or coil generates electric power in response to the change in the magnetic flux of the magnetostrictive element. | 02-07-2013 |
| 20130140919 | POWER GENERATION ELEMENT AND POWER GENERATION APPARATUS INCLUDING POWER GENERATION ELEMENT - A power generation element includes: a first magnetostrictive rod made of a magnetostrictive material; a rigid rod made of a magnetic material and disposed in parallel with the first magnetostrictive rod, the magnetic material having rigidity and a shape that enable uniform application of compression force or tensile force to the first magnetostrictive rod; a first coil wound around the first magnetostrictive rod; and two connecting yokes each of which is provided at one end of each of the first magnetostrictive rod and the rigid rod to connect the first magnetostrictive rod and the rigid rod, wherein the power generation element generates power through expansion or contraction of the first magnetostrictive rod due to vibration in a direction perpendicular to an axis direction of the first magnetostrictive rod. | 06-06-2013 |
| 20130175888 | APPARATUS FOR HARVESTING ELECTRICAL POWER FROM MECHANICAL ENERGY - An apparatus for harvesting electrical power from mechanical energy is described. The apparatus includes: a flux path. The flux path includes: a magnetic material having a magnetic property that is a function of stress on the magnetic material; a first magnetically conductive material proximate the magnetic material; a magnet in the flux path, wherein a magnetomotive force of the magnet causes magnetic flux; and a component configured to transfer changes in load caused by an external source to the magnetic material. | 07-11-2013 |
| 20140091646 | ACTUATOR - An actuator having a drive element which is made of a magnetic shape memory material, can be driven in response to electrical control of a plurality of coil apparatuses ( | 04-03-2014 |
| 20140097709 | POWER GENERATION SWITCH - A power generation switch includes: parallel beams including at least one magnetostrictive rod made of a beam-shaped magnetostrictive material; a coil wound around the rod; a first connecting part connecting two beams in the parallel beams together, at first ends of the parallel beams; a second connecting part connecting the two beams together at second ends of the parallel beams; a field part that produces magnetic flux to pass through the two beams in the same direction; and an operating part operable by a user. The first connecting part is a non-displaced fixed end. The second connecting part is a free end for free oscillation. The operating part applies external force to the second connecting part to cause free oscillation of the parallel beams, thereby causing a positive axial force in one of the two beams and a negative axial force in the other one of the two beams. | 04-10-2014 |
| 20140333156 | ELECTRIC POWER GENERATION DEVICE - An electric power generation device comprising: a support member; a first magnetostrictive member with one end attached to the support member; a second magnetostrictive member with one end attached to the support member and disposed in parallel with the first magnetostrictive member; a vibration linking member connecting the first and second magnetostrictive members to allow the first and second magnetostrictive members to vibrate coordinately; a coil wound around at least either the first magnetostrictive member or the second magnetostrictive member; and a magnetic path forming member containing magnet, connecting magnetically between one ends of the first and second magnetostrictive members and between the other ends thereof, applying magnetic fields of opposite directions mutually to the first and second magnetostrictive members, respectively, and forming magnetic path, the first and second magnetostrictive members acting mutually as magnetic return parts of the magnetic path. | 11-13-2014 |
| 20140346902 | POWER GENERATING ELEMENT AND POWER GENERATION DEVICE - The present disclosure includes: a magnetostrictive plate including a magnetostrictive material; a yoke around which a coil is wound and which has two ends magnetically connected to a surface of the magnetostrictive plate; and a bias magnet that generates bias magnetic flux circulating from one of the two ends of the yoke to the other one of the two ends through the yoke. Here, the magnetostrictive plate is surface-bonded to a non-magnetic structural body. | 11-27-2014 |
| 20150054359 | MSM ACTUATOR SYSTEM - An MSM actuator system, comprising at least one expansion unit ( | 02-26-2015 |
| 20150115748 | POWER GENERATION DEVICE - A power generation device includes: first and second beams which are arranged to face each other and are bent by vibration; and a coil wound around the first and second beams. Each of the first and second beams includes: a beam body; and a stress relaxation layer made of a material different from a material of the beam body and partially covering the surface of the beam body. | 04-30-2015 |
| 20150325778 | POWER GENERATING ELEMENT - A power generating element includes a magnetostrictive rod through which lines of magnetic force pass in an axial direction thereof, the magnetostrictive rod formed of a magnetostrictive material; a magnetic rod arranged in parallel with the magnetostrictive rod, the magnetic rod formed of a magnetic material; a first coupling mechanism for coupling one end portion of the magnetostrictive rod and one end of the magnetic rod; a second coupling mechanism for coupling the other end portion of the magnetostrictive rod and the other end portion of the magnetic rod; and a coil provided so that the lines of magnetic force pass inside the coil in an axial direction thereof and in which a voltage is generated on the basis of a variation of density of the lines of magnetic force caused when the magnetostrictive rod is expanded or contracted. Further, at least one of the one end portion and the other end portion of the magnetostrictive rod is formed into a male screw portion. | 11-12-2015 |
| 20160065093 | POWER GENERATOR - A power generator | 03-03-2016 |
| 20160072410 | POWER GENERATOR - A power generator | 03-10-2016 |
| 20190148620 | POWERLESS MAGNETIC FIELD SENSING USING MAGNETOELECTRIC NANOWIRES | 05-16-2019 |
