| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 335229000 | With permanent magnet | 71 |
| 20080197949 | Actuator Assembly, Method of Driving an Actuator Assembly and Apparatus for Driving an Actuator Assembly - An actuator assembly includes a first part ( | 08-21-2008 |
| 20080238594 | Low-Power Numerically Controlled Contactor and Control System Made of the Contactors - The invention deals with a kind of switchboards, especially involving contactors, cores and driving circuits. The invention has solved three problems of high driving power, high consumption and short service life in current contactors, and has provided a LCDC contactor inlaid with driving circuit and controlling port. LCDC contactor in this invention consists of field coils, movable and fixed cores. The fixed core is folded with silicon-steel sheets, and the permanent magnet laid in the fixed core. LCDC contactor includes driving circuit inside, the field coils are connected with driving circuit and the circuit connecting external power is used to control signal of driving coils. This invention provides a controlling system constituted of the LCDC contactors. Low power consumption, effortless driving, long service life are the main beneficial effects. The LCDC contactor can directly employ nominal voltage DC 24V switching power with a remarkably energy-saving effect. | 10-02-2008 |
| 20080272870 | ELECTROMAGNETIC ACTUATOR - An electromagnetic actuator is provided with a stationary portion including first and second positions. First electric wires are arranged at the first and second position of the stationary portion. A movable portion is movable between the first and second positions and includes a magnetic pole surface having a magnetic pole. The magnetic pole surface faces toward a corresponding one of the first electric wires when the movable portion is located at the first position or the second position. A drive circuit moves the movable portion. The electromagnetic actuator uses electromagnetic induction that occurs due to each of the first electric wires and the magnetic pole to detect the position of the movable portion. When trying to move the movable portion to the first position, the drive circuit temporarily applies force to the movable portion to first move the movable portion toward the second position. | 11-06-2008 |
| 20080290972 | ACTUATION MAGNET FOR MOVING A CLOSURE NEEDLE OF A HOT-RUNNER NOZZLE OF AN INJECTION MOLDING TOOL - An actuation magnet is provided for moving a closure needle of a hot-runner nozzle of an injection molding tool. The actuation magnet has an armature which is coupled in movement to the closure needle and may be displaced between first and second cores by subjecting at least one coil to current. A permanent magnet is arranged in a manner such that it exerts an additional magnetic force on the armature in at least one, preferably two, movement directions. | 11-27-2008 |
| 20080303618 | Multi-Position Magnetic Detents - Various embodiments for magnetic detent assemblies provide for detent devices with improved performance and manufacturability. In one embodiment, magnetic detent assemblies provide for custom detent positions and custom force profiles by including a pair of unitary magnetic components each having a special geometry. In an embodiment, the changing area of overlap (and hence magnetic flux) between the magnetic components can give rise to the custom detent positions and custom force profiles. In a specific embodiment, the magnetic components can comprise an N-point star shaped geometry, where the number and distribution of the start wings can be varied to define customized detent positions and the contour of the star wings can be varied to create customized force profiles. In other embodiments, devices such as laptop computers and docking stations for handheld electronic devices can implement multi-position detent hinges with the magnetic detent assemblies. | 12-11-2008 |
| 20090002108 | Actuator - An actuator has a resilient shape memory member | 01-01-2009 |
| 20090027148 | BI-STABLE MAGNETIC LATCH WITH PERMANENT MAGNET STATOR - A magnetic latch includes a stator having first and second permanent magnets disposed on either side of a center portion. Each of the first and second permanent magnets has at least two associated poles. A rotor has at least one magnetic region. The rotor is configured for rotation about an axis of the stator between a first latched position and a second latched position. | 01-29-2009 |
| 20090058582 | SYSTEMS AND METHODS FOR EXTRACTING NET-POSITIVE WORK FROM MAGNETIC FORCES - This invention relates generally to magnets, and more specifically, to improved systems and methods for extracting net-positive work from magnetic forces. In one embodiment, the invention includes the steps of magnetically coupling a first stack magnet to a gate magnet; permitting at least one wheel magnet to approach the first stack magnet and the gate magnet, the first stack magnet and the gate magnet exerting magnetic attractive force upon the at least one wheel magnet; facilitating separation of the gate magnet and the first stack magnet using magnetic force from at least one additional magnet; facilitating movement of the gate magnet and the at least one wheel magnet towards a second stack magnet; facilitating magnetic coupling of the gate magnet to the second stack magnet; permitting the at least one wheel magnet to distance itself from the gate magnet and the second stack magnet, the gate magnet and the second stack magnet exerting magnetic repulsive force upon the at least one wheel magnet; facilitating separation of the gate magnet and the second stack magnet using magnetic force from the at least one additional magnet; facilitating movement of the gate magnet towards the first stack magnet; and facilitating magnetic coupling of the gate magnet to the first stack magnet. | 03-05-2009 |
| 20090206969 | TRIP ACTUATOR INCLUDING A THERMOPLASTIC BUSHING, AND TRIP UNIT AND ELECTRICAL SWITCHING APPARATUS INCLUDING THE SAME - A circuit breaker includes separable contacts, an operating mechanism structured to open and close the contacts, and a trip unit cooperating with the operating mechanism to trip open the contacts. The trip unit includes a sensor structured to sense current flowing through the contacts, a processor structured to output a trip signal responsive to the sensed current, and a trip actuator. The trip actuator includes a housing including a recess, a coil within the recess, the coil having an opening therethrough, a magnet within the recess, a thermoplastic bushing including a conduit therethrough, the thermoplastic bushing being coupled to the housing, and an armature disposable within the opening of the coil and slidably disposed within the conduit of the thermoplastic bushing. The magnet attracts the armature toward the housing. A spring biases the armature away from the housing, in order to cause the operating mechanism to trip open the contacts. | 08-20-2009 |
| 20090212892 | Circular magnetic switch - A circular magnetic switch comprises a circuit device and a ring. The circuit device is provided with a plurality of magnetic induction elements and the ring is provided with a plurality of circularly arranged magnets, so that the magnetic induction elements are able to sense the relatively positional changes of the magnets when the ring is turned. The circular magnetic switch is characterized in that: at least an anti-interference magnet is further provided between at least two magnets of the plurality of magnets and the polarity of two magnets is opposite to that of the anti-inference magnets that is provided between the two magnets. | 08-27-2009 |
| 20100033278 | Method and Apparatus for Electromagnetic Actuation - Embodiments of the subject invention relate to a method and apparatus for electromagnetic actuation. Embodiments of an electromagnet actuator in accordance with the subject invention can include a fixed main body and a deformable membrane or displaceable piston-like member. In the case of piston motion, in specific embodiments, the piston can be supported by a corrugated diaphragm or bellows. In various embodiments, all or portions of the electromagnet actuator can be produced using microfabrication techniques. Specific embodiment of the subject invention can incorporate a plurality of magnets providing magnetic flux to a plurality of coil conductor elements so as to provide a plurality of locations that a force is applied to the moveable body portion of the electromagnetic actuator. Specific embodiments can incorporate an array of magnets interdigitated with an array of coil conductor elements, where the arrays can include 2, 5, 10, 20, or more each. Further specific embodiments allow the relative position of the magnetic flux and coil conductor elements to remain substantially the same during the movement of the moveable body by positioning the magnets and coil conductor elements on the moveable body so that the relative position of the magnets and the coil conductor elements on the moveable body do not change with the movement of the moveable body. | 02-11-2010 |
| 20100123534 | MAGNETIC MECHANICAL SWITCH - A method and apparatus for managing data, particularly in regard to non-volatile memory cells. In some embodiments, at least two actuating conductors are at least partially surrounded by a main ferromagnetic core and an adjacent hard magnet. When current is conducted through the actuating conductors, a flexible beam is induced to traverse a first air gap that defines a high resistance position and a low resistance position. | 05-20-2010 |
| 20100134225 | Linear Electromagnetic Actuator - First and second projections are formed to protrude toward a guide rail from both sides of a slide table. Third and fourth projections are formed to protrude toward the slide table from both sides of the guide rail. A plurality of balls are arranged in clearances between the first and second projections and the third and fourth projections. | 06-03-2010 |
| 20100164661 | CYLINDER TYPE BISTABLE PERMANENT MAGNETIC ACTUATOR - Disclosed is a cylinder type bistable permanent magnetic actuator, the bistable actuator including, a cylinder formed by rolling a thin plate so as to form an inner space, a mover reciprocatingly installed within the cylinder in a lengthwise direction of the cylinder, first and second coils installed near both end portions of the cylinder, respectively, by interposing the mover therebetween, and a permanent magnet installed between the first and second coils. | 07-01-2010 |
| 20100271157 | ELECTROMAGNETIC ACTUATOR HAVING PERMANENT MAGNETS PLACED IN THE FORM OF A V IN AN ELECTROMAGNETICALLY OPTIMIZED ARRANGEMENT - The invention relates to an electromagnetic actuator including an actuating member associated with an armature and able to move under the action of at least one electromagnet, a coil, and a core suitable for channeling a flux of the coil so that the flux closes within the armature, where the core includes a base from which branches extend, including a central branch around which the coil extends, and two permanent magnets which are associated with the core. The two permanent magnets are placed in the central branch of the core in order to form a V, which separates the central branch into two parts so that any section of the core or the armature through which the flux from one or the other of the permanent magnets can pass, has an area large enough to prevent saturation by this flux. | 10-28-2010 |
| 20100289605 | ARRANGEMENT OF STRINGED SOLENOID DRIVES - The invention relates to an arrangement of stringed solenoid drives ( | 11-18-2010 |
| 20100315185 | VIBRATION GENERATOR - A vibration generator | 12-16-2010 |
| 20110001591 | ELECTROMAGNETIC ACTUATING MECHANISM - An electromagnetic control mechanism ( | 01-06-2011 |
| 20110032060 | Linear tape motor - A Linear Tape Motors sequentially bends flexures to precisely position a payload within a large, linear range. Movement is backlash free. Flexure bending is also used to drive large forces, using efficient mechanical advantage, anchor the Tape Motor against back-slipping and prevent sticking and jamming malfunctions. Existing permanent magnet motor drive technology can be easily adapted to energize and control the flexure bending motions. Combining flexures with rare earth permanent magnets, provides ultra compact Linear Tape Motors with very high power and force densities that hold position with power off. Their operating range can be is as long as required. Thus, Linear Tape Motors are attractive for space science instruments, where precision positioning in ultra cold operating conditions is required and where low mass and low power are premium. But, they will be attractive to many other applications as well, especially where long range, safe, precise movements of large force payloads are required, where simplicity and reliability are important, where speeds are moderate to low and where operating temperatures are not so extreme as to demagnetize the permanent magnets. The Linear Tape Motor concept is novel but, it is simple and is easily adapted to modern permanent magnet motor technology, both the hardware materials and construction methods and the electronics and computer technology that controls the hardware. Development should be short and inexpensive, with high prospects of success. | 02-10-2011 |
| 20110050375 | ELECTROMAGNETIC ACTUATOR - The electromagnetic actuator is a linear electromagnetic actuator in which the relative position between a slide table that supports permanent magnets thereon and a guide rail that supports a coil, which is arranged in confronting relation to the permanent magnets, is displaced by means of a thrust force generated by a current flowing through the coil. The coil is disposed on the guide rail through a low coercive force magnetizable material body, the coercive force of which is lower than a predetermined value. Consequently, generation of residual magnetization can be suppressed, and an influence on the thrust force caused by such residual magnetization can also be suppressed. | 03-03-2011 |
| 20110080240 | MAGNET AIDED SOLENOID FOR AN ELECTRICAL SWITCH - A solenoid is provided for an electrical switch. The solenoid includes a coil having a passageway extending therethrough along a central longitudinal axis. The solenoid also includes a movable core having a coil segment and a magnet segment. The coil segment is received within the passageway of the coil such that the coil extends around the coil segment. The magnet segment includes a radially outer surface relative to the central longitudinal axis of the passageway of the coil. The movable core is movable relative to the coil along the central longitudinal axis such that the coil segment is movable within the passageway of the coil along the central longitudinal axis. A permanent magnet extends around at least a portion of the radially outer surface of the magnet segment of the movable core. The movable core is movable along the central longitudinal axis relative to the permanent magnet. | 04-07-2011 |
| 20110102115 | Fastening for a solenoid - The invention refers to a loosing- and twisting-proof fastening for solenoids, in particular with a tube pipe receiving a magnet armature, and a coil element, wherein the coil element can be fixed on the tube pipe via a fastening element. | 05-05-2011 |
| 20110215888 | WIRELESS CONTROL OF MICROROBOTS - Wireless control of a microrobot can be performed using a magnetic field originating from a localized control magnet source relative to a body into which the microrobot is placed. Torque forces which contribute to rotation (and propulsion) of the microrobot can overcome magnetic forces which produce attraction or repulsion between the microrobot and the control magnet. | 09-08-2011 |
| 20110285484 | PROPORTIONAL MAGNET FOR A HYDRAULIC DIRECTIONAL CONTROL VALVE AND METHOD FOR THE PRODUCTION THEREOF - A proportional magnet for a hydraulic directional control valve and a method for the production thereof. The proportional magnet has a coil unit, a bearing unit and a pole disk. The coil unit has a cylindrical coil, a cylindrical magnet casing surrounding the coil, an annular yoke disc arranged at a face of the magnet casing and a housing. The bearing unit has a yoke with a first bearing point, a pole core with a second bearing point, and an armature unit with a magnet armature and a pressure pin. The bearing points and armature unit are aligned coaxially by a centering sleeve. When mounting the proportional magnet, the bearing unit is inserted into a cylindrical opening of the coil unit and the pole disc is put on the coil unit after the bearing unit is inserted for axially fixating the bearing unit and closing the magnetic circuit. | 11-24-2011 |
| 20120112860 | ADJUSTABLE MID AIR GAP MAGNETIC LATCHING SOLENOID - A magnetic latching solenoid comprises a housing, a moveable magnetically permeable member, a stationary magnetic assembly, a counter flux generator; and, a spring. A substantially equal extent of the moveable magnetically permeable member and stationary magnetic assembly along results in an air gap interface being essentially mid-way between the opposite axial extremities of the moveable magnetically permeable member and stationary magnetic assembly, thereby enhancing an attracting force of a permanent magnet that comprises the stationary magnetic assembly. In an example embodiment, the stationary magnetic assembly comprises a pole member which is adjustably positionable to minimize air gaps. | 05-10-2012 |
| 20120206226 | MAGNETIC FIELD FOCUSING FOR ACTUATOR APPLICATIONS - The magnetic force between the electromagnet and plunger of a magnetic actuator, the electromagnet including a coil generating magnetic flux when the coil is energized, can be increased by locating a near field plate on the electromagnet. The near field plate has a spatially modulated surface reactance configured to focus the magnetic flux within a region of the plunger, such as the central portion of an end portion of the plunger proximate the electromagnet, so as to increase the magnetic force between the electromagnet and plunger. Examples also include permanent magnet based actuators and the use of other magnetic field focusing devices. | 08-16-2012 |
| 20120235777 | ELECTROMAGNETIC ACTUATING DEVICE - An electromagnetic actuating device ( | 09-20-2012 |
| 20120293287 | Electromagnetic Actuator With Magnetic Latching and Switching Device Comprising One Such Actuator - An electromagnetic actuator comprising a core moving between a latched position and an open position, a permanent magnet, a coil designed to generate a first magnetic control flux to move the core from an open position to a latched position, and a second magnetic control flux designed to facilitate movement of the moving core from the latched position to the open position. The permanent magnet is positioned on the moving core so as to be at least partly outside the fixed magnetic circuit in which the first magnetic control flux flows in the open position, and to be at least partly inside the fixed magnetic circuit used for flow of a magnetic polarization flux of the magnet in the latched position. | 11-22-2012 |
| 20120306603 | MAGNETICALLY SENSED USER INTERFACE APPARATUS AND DEVICES - A user interface device including a floating actuator sub-assembly and a base assembly flexibly coupled to the floating actuator assembly is disclosed. The floating actuator assembly may include a magnet array assembly with a plurality of magnets fixed relative to each other. The user interface device may further include a deformable actuator sub-assembly, which may include a magnet array assembly with a plurality of magnets in a movable configuration relative to each other. A base assembly may include multi-axis magnetic sensors corresponding to the magnets in the magnet arrays to sense position of motion of the magnets during user displacements and/or deformation of actuator elements of the user interface device. | 12-06-2012 |
| 20130015931 | TUNABLE STIFFNESS ACTUATORAANM AC; ShivaramAACI BangaloreAACO INAAGP AC; Shivaram Bangalore INAANM Buravalla; Vidyashankar R.AACI BangaloreAACO INAAGP Buravalla; Vidyashankar R. Bangalore IN - An actuator adaptable for tunable stiffness control is provided, including a stiffness element including a smart material, and a magnetically actuated biasing element. The biasing element is configured to provide a non-linear or variable bias force on the stiffness element. The smart material may be a shape memory alloy, and the biasing element may be configured to include a permanent magnet, an electromagnet, a magnetic shape memory alloy, or a combination of these. The stiffness element and the biasing element of the actuator may be configured in parallel with each other, or may be configured in series with each other. The bias force may be provided in response to an input defined by one or more of fatigue, functional degradation, aging, shakedown, elongation, and operating environment of the stiffness element of the actuator, or defined by an operating characteristic of the actuator or a device controlled by the actuator. | 01-17-2013 |
| 20130021124 | Magnetic Trigger Mechanism - A magnetic trigger mechanism with a yoke with armature opening. The armature is coaxially surrounded by a coil having an excitation coil, which is acted on by a force of a preloaded spring and which remains in a first end position due to magnetic holding force of a permanent magnet when there is no current flowing through the excitation coil. The permanent magnet is arranged at a first end of the armature and the second end position of the armature being achieved by a brief flow of current through the excitation coil together with the accompanying lowering of the magnetic holding force and the spring force. The first end of the armature is guided in the coil body, and the second end position, which faces the armature opening, is guided by a centering ring, the highly permeable centering ring rests against the yoke at the armature opening and can move. | 01-24-2013 |
| 20130038414 | ACTUATOR DEVICE AND PROCESS FOR PRODUCING AN ACTUATOR DEVICE - Actuator device having an expansion unit, which includes a magnetic shape memory alloy material, and a spring unit which interacts therewith in a restoring manner, wherein at least one spring of the spring unit is assigned to the expansion unit, which is designed to perform an expansion movement along an expansion direction, in such a way that the spring can exert a restoring spring force counter to the expansion direction on the expansion unit, and wherein the spring is set up and/or predetermined in its spring characteristic curve properties in such a way that a spring force profile of the spring unit along a stroke range, determined by an expansion force profile of the expansion unit and a restoring spring force profile, of the expansion movement does not form a continuously rising curve, and/or the spring force profile, with respect to a continuously rising curve, extends and/or increases the stroke range. | 02-14-2013 |
| 20130147583 | BISTABLE ELECTROMAGNETIC ACTUATING DEVICE AND CAMSHAFT ACTUATING DEVICE - A bistable electromagnetic actuating device and a camshaft actuating device for displacing a camshaft in a motor vehicle having an electromagnetic actuating device. | 06-13-2013 |
| 20130257571 | LIFTING ARMATURE ACTUATOR - An electromagnetic lifting armature actuator, in particular for valves, comprises an armature rod which can be shifted in the direction of its longitudinal axis, and a magnetic yoke comprising a first yoke leg and a second yoke leg which is coaxial to the armature rod. A first magnet coil encloses the first yoke leg and a second magnet coil encloses both the second yoke leg and the armature rod. One of the magnet coils is a working and measuring coil which can be selectively used for enhancing the magnetic force or for determining a position of the movable armature rod. | 10-03-2013 |
| 20130307652 | SOFT LATCH BIDIRECTIONAL QUIET SOLENOID - Embodiments of soft latching solenoids comprise a coil assembly ( | 11-21-2013 |
| 20140002218 | ELECTROMAGNETIC ACTUATOR DEVICE | 01-02-2014 |
| 20140055223 | ELECTROMAGNET DEVICE, METHOD OF ASSEMBLING THE SAME, AND ELECTROMAGNETIC RELAY USING THE SAME - The present invention provides an electromagnet device which can obtain a desirable attraction force (retention force) between an iron core and a movable iron piece, a method of assembling the electromagnet device and an electromagnetic relay using the electromagnet device, the electromagnet device including an electromagnet block having the iron core being wound by a coil and an auxiliary yoke fixed to one end portion of the iron core, a yoke connected to the one end portion of the iron core via a permanent magnet, the movable iron piece pivotably supported on a pivoting shaft center (serving as a fulcrum) located in an end face edge portion of the yoke so that the movable iron piece pivots on a basis of magnetization and demagnetization of the electromagnet block, where the permanent magnet is located on an extension line of an axial center of the iron core and is interposed between the auxiliary yoke and the yoke. | 02-27-2014 |
| 20140062628 | ELECTROMAGNETIC ACTUATOR DEVICE - An electromagnetic actuator device has a coil unit ( | 03-06-2014 |
| 20140218143 | ROTARY SOLENOID - In one of its aspects the technology disclosed herein concerns a process of making a rotary solenoid. In a generic mode, the process comprises fitting together two mating core half members ( | 08-07-2014 |
| 20140313000 | Electromagnetic actuator - The invention relates to an electromagnetic actuator having a magnetically soft housing with at least two field coils which are distanced from each other axially, and an armature which is mounted in the housing concentrically to the field coils and which can slide axially, wherein the armature has at least one permanent magnet ring which encloses the armature radially. According to the invention, a non-magnetic sleeve is included which, together with the permanent magnet ring, radially surrounds the armature. | 10-23-2014 |
| 20150015352 | LINEAR ACTUATOR AND GROOVE FASHIONING METHOD FOR LINEAR ACTUATOR - A linear actuator includes a first tube, a second tube inserted into the first tube to be free to slide, a rod fixed at one end of the rod to the first tube, a rod guide provided on the other end of the rod so as to slide relative to the second tube, a plurality of permanent magnets held by the rod, a holder that is fitted into the second tube and holds a plurality of coils, a first chamber defined between one end of the holder and an end portion of the first tube, and a second chamber defined between the other end of the holder and the rod guide. An insertion hole which connects the first chamber to the second chamber and through which the rod passes is formed in the holder. A connecting groove that connects the first chamber to the second chamber is formed in the second tube to extend in an axial direction. | 01-15-2015 |
| 20150061798 | CONTROL SOLENOID WITH IMPROVED MAGNETIC CIRCUIT - An electromagnetic solenoid having a coil wound around a bobbin between first and second flanges for generating a magnetic force is disclosed. An armature having an armature flange at a first end is within an interior portion of the tubular center section of the bobbin and is supported for axial displacement between a first position and a second position. A permanent ring magnet is placed at the first end flange with an inner radial face spaced apart from an outer radial face of the armature flange by a radial gap, with the ring magnet supported by a retainer adjacent to the first end flange and fixed against axial displacement with respect to the bobbin. The solenoid comprises an outer case having a closed bottom at a first end and an open top at a second end and a flux washer disposed in the open top adjacent to a second end of the armature. | 03-05-2015 |
| 20150362088 | Magnetically Controlled Pressure Relief Valve - A relief valve includes a first chamber with an inlet that includes an inlet valve seat and an outlet. A second chamber is spaced apart from the first chamber. A chamber wall is positioned between the first chamber and the second chamber. A closure member is movably positioned within the first chamber and is configured to be closable on the inlet valve seat. A first magnet is coupled to the closure member. The first magnet is movably positioned within the second chamber and is configured to generate a first magnetic field of a first polarity. A second magnet is positioned within the second chamber and is configured to generate a second magnetic field of a second polarity. The first magnetic field and the second magnet field interact to bias the closure member to rest on the inlet valve seat with a set force. | 12-17-2015 |
| 20150380142 | MAGNETIC CONTACTOR - The magnetic contactor, according to an exemplary embodiment, includes: a moving core including a main core disposed to be movable in a length direction thereof and first and second core plates disposed at both ends of the main core, respectively; a coil provided on the circumference of the main core; a fixed core disposed around the coil to form a magnetic path; and a permanent magnet disposed between the coil and the fixed core, wherein the first core plate is disposed outside the fixed core, the second core plate is disposed inside the fixed core, and the fixed core is provided with at least one protrusion to reduce a gap between the fixed core and the first or second core plate. | 12-31-2015 |
| 20160064130 | Electronic Device With Signal Line Routing To Minimize Vibrations - An electronic device may have a source of magnetic field such as a magnet that produces a static magnetic field. A flexible printed circuit may have a flexible tail that surrounds a central portion. The central portion may overlap the magnet. Electrical components may be mounted to the central portion. To prevent undesired vibrations and noise due to interactions between magnetic fields induced by signals flowing in signal lines in the flexible printed circuit and the static magnetic field, the signal lines may be vertically stacked or may be routed along a curved path that does not overlap the magnet. The tail may serve as a service loop that allows a portion of a housing for the device and electrical components mounted to the central portion in alignment with windows in the housing to be detached for servicing. | 03-03-2016 |
| 20160071640 | SOLENOID ACTUATOR - A plunger is formed of a soft magnetic material to have one end connected a regulation pin. A permanent magnet is affixed to a stationary portion, which is stationary relative to the plunger, to attract the plunger in a retreated direction. A coil generates a magnetic flux in an opposite direction of the permanent magnet to reduce a magneto attraction force, which attracts the plunger. A spring biases the regulation pin in an advanced direction. The spring applies a biasing force to the regulation pin to move the regulation pin in the advanced direction when electricity is supplied to the coil to reduce the magneto attraction force of the permanent magnet. A magnetism detection unit is located on a magnetic circuit, which conducts a magnetic flux generated by the permanent magnet and the coil, to detect a magnetic flux density. | 03-10-2016 |
| 20160118174 | ELECTROMAGNETIC ACTUATING APPARATUS - An electromagnetic actuating apparatus, in particular a proportional magnet or switching magnet, comprising a magnet armature ( | 04-28-2016 |
| 20160125990 | ACTUATOR WITH TRANSMISSION ELEMENT - An actuator ( | 05-05-2016 |
| 20160172091 | Method for manufacturing a pole tube, a pole tube for an electromagnet and a solenoid valve | 06-16-2016 |
| 20180025824 | ELECTROMAGNETIC ACTUATOR | 01-25-2018 |
| 335230000 | Polarized electromagnet | 21 |
| 20080204175 | ACTUATOR FOR CONTROL VALVES AND/OR SHUT-OFF DEVICES - The subject of the present invention is an actuator for control valves and/or shut-off devices with an actuating element acting on a closing or opening element, in which the actuating element comprises a push or pull rod ( | 08-28-2008 |
| 20110037546 | ELECTROMAGNETIC ACTUATOR AND CORRESPONDING CONTROL DEVICE WITH HAPTIC FEEDBACK - The invention relates to an electromagnetic actuator to be mounted in a haptic-feedback control device ( | 02-17-2011 |
| 20110187483 | Rotary Solenoid - The invention refers to a Rotary Solenoid comprising a stator and rotor that can rotate around a rotational axis. The rotor has a rotor shaft on which a rotor disc is arranged. The rotor disc is, seen in the direction of the circumference, polarized alternating magnetically. The stator carries at least one coil. On the coil windings of electrically conducting wire are provided. For guiding the magnetic flow of the magnetic field generated by the coil a pole face consisting of several partial pole faces is provided. | 08-04-2011 |
| 20110210809 | LATCHING LINEAR SOLENOID - A linear solenoid includes a pair of soft iron pole members which are in a spaced apart linear arrangement. A permanent magnet is attached to the end of a plunger which rides between the pole members. When a first of two electro-magnet coils is energized the plunger which is latched to one of the pole members is repelled to the opposite pole member and latched. When the second coil is energized the plunger returns to the original pole member and is latched. | 09-01-2011 |
| 20110248804 | Multistable Electromagnetic Actuators - A multistable electromagnetic actuator is provided which addresses a need for a more robust, reliable and energy efficient actuation device. It comprises an armature ( | 10-13-2011 |
| 20140028420 | Moving Magnet Actuator with Counter-Cogging End-Ring and Asymmetrical Armature Stroke - A moving magnet actuator (MMA) includes a magnetically conductive end-ring that is spaced from a magnet pole piece. The end-ring is constructed and spaced to provide a desired counter or anti-cogging force when the MMA is in a powered state. The MMA is also constructed such that a central portion of its armature stroke is axially displaced from a radial centerline of the magnetically conductive conduit enclosing the MMA components. | 01-30-2014 |
| 20170236630 | Magnetically Latching Flux-Shifting Electromechanical Actuator | 08-17-2017 |
| 335231000 | Varying alternating current amplitude responsive | 2 |
| 20080309440 | ELECTROACOUSTIC TRANSDUCER AND MAGNETIC CIRCUIT UNIT - An electroacoustic transducer has a magnetic circuit unit including a plate-shaped yoke, first and second magnets juxtaposed on the yoke, and first and second top plates mounted on the respective tops of the first and second magnets. One end of the first magnet is magnetized to one of north and south poles. The other end of the first magnet is opposite in polarity to the one end. The second magnet is magnetized to polarities opposite to those of the first magnet. A magnetic gap is formed between the first and second top plates. | 12-18-2008 |
| 20090091410 | MAGNETIC LEVITATION VIBRATION SYSTEMS AND METHODS FOR TREATING OR PREVENTING MUSCULOSKELETAL INDICATIONS USING THE SAME - A magnetic levitation vibration system comprising a top plate, a base plate, at least one first magnet, at least one second magnet, at least one electromagnetic actuator comprising an upper half and a lower half, a controller, a sensor, and a control circuit. A method for the treatment or prevention of musculoskeletal indications comprising providing a top plate, providing a base plate, generating a first magnetic field to levitate the top plate, generating a second magnetic field to drive the top plate into vibration, adjusting frequency of vibration of the top plate; and adjusting magnitude of vibration of the top plate. | 04-09-2009 |
| 335232000 | With plural armatures | 3 |
| 20090195339 | Magnetized Casing String Tubulars - A stack of magnetized casing tubulars includes a plurality of magnetized wellbore tubulars each of which includes a plurality of north and south magnetic poles imparted to a corresponding plurality of longitudinal positions along the tubulars. The plurality of wellbore tubulars are arranged into a stack having at least two rows and at least two columns, the wellbore tubulars are stacked side by side and atop one another such that the magnetic poles on one tubular are radially aligned with magnetic poles of an opposite polarity on adjacent tubulars. Such a configuration advantageously substantially eliminates weakening of the imparted magnetic field due to interaction of the magnetic poles on adjacent tubulars. | 08-06-2009 |
| 20110267159 | ELECTROMAGNETIC ACTUATOR DEVICE - An electromagnetic actuator device has a core unit with a coil device designed to cooperate with armature units displaceably guided relative to the core unit in response to current applied to the coil device, wherein the core unit is designed to cooperate with a plurality of spatially separated plunger units of the armatures so that an electromagnetic interaction takes place with the plurality of plunger units in response to current applied to a coil of the coil device. | 11-03-2011 |
| 20160125991 | Methods and Systems For Push Pin Actuator - A push pin actuator apparatus is provided. The push pin actuator apparatus includes a housing, a wire coil arranged within the housing and arranged around a first armature and a second armature. The first armature is coupled to a first push pin and the second armature is coupled to a second push pin. The push pin actuator apparatus further includes a first permanent magnet and a second permanent magnet arranged on opposing sides of the first armature, and a third permanent magnet and a fourth permanent magnet arranged on opposing sides of the second armature. The first push pin is actuated in response to a current being applied to the wire coil in a first direction, and the second push pin is actuated in response to a current being applied to the wire coil in a second direction opposite to the first direction. | 05-05-2016 |
| 335234000 | With reversible magnetic flux-type movement (e.g., bistable type) | 8 |
| 20080204176 | Unequally tapped coil solenoid valve - This invention discloses a magnetically latching solenoid valve and a solenoid thereof. The solenoid includes a coil disposed around a bobbin and divided into two sections by a tap for adjustable pull and release forces to a plunger disposed therein. A first section of the coil, through magnetic induction, pulls the plunger toward a fixed stopper disposed at the lower end of the bobbin and coupled to a cylindrical yoke. A permanent magnet is disposed between the stopper and the yoke. On contact with the stopper, the plunger is held in place by the permanent magnet even after the current flow is removed from the first section of the coil. A second section of the coil, with a differing magnetic induction, returns the plunger. By the operating current at the common tapped junction of the coil, the electromagnetic force generated by the first section will add to the fixed force from the permanent magnet while the electromagnetic force generated by the second section will subtract from the fixed force from the permanent magnet. By using a tapped coil, a simpler and more efficient electronic drive can be used with reduced electrical switching losses. | 08-28-2008 |
| 20080297287 | MAGNETIC LINEAR ACTUATOR FOR DEPLOYABLE CATHETER TOOLS - Using the linear forces that are provided by an electromagnetic solenoid applied near the distal end of a medical catheter, various surgical instruments can be actuated or deployed for use in interventional medicine. The linear actuator uses the principles of magnetic repulsion and attraction as a means for moving a bobbin that can be attached to various types of moving components that translate linear movements into the actuation of a tool that is attached to the linear actuator. Using independent solenoid coils, movement modality is increased from two possible positions to three. | 12-04-2008 |
| 20100277264 | SOLENOID - A solenoid assembly ( | 11-04-2010 |
| 20110304417 | BISTABLE PERMANENT MAGNETIC ACTUATOR - A permanent magnetic actuator includes a flux inducing unit having a hollow space therein and formed by laminating a plurality of plates, a movable element disposed in the hollow space of the flux inducing unit to be reciprocated, permanent magnets installed at inner walls of the hollow space, and guide members located between the permanent magnets and the movable element and configured to guide reciprocating motion of the movable element. | 12-15-2011 |
| 20130241680 | SPRINGLESS ELECTROMAGNET ACTUATOR HAVING A MODE SELECTABLE MAGNETIC ARMATURE - A standard solenoid body and coils are combined with a non-magnetic armature tube containing a permanent magnet, preferably neodymium. The magnet is located in one of three positions within the armature. When biased toward the stop end of the solenoid, it may be configured to act as a push solenoid. When biased toward the collar end of the solenoid, it may be configured to act as a pull solenoid. In either case, no spring is required to return the armature to its de-energized position. Positioning the magnet in the middle of the armature defines a dual-latching solenoid requiring no power to hold it in a given state. A positive coil pulse moves the armature toward the stop end, whereas a negative coil pulse moves the armature toward the collar end. The armature will remain at the end to which it was directed until another pulse of opposite polarity comes along. | 09-19-2013 |
| 20130328649 | DIVERGENT FLUX PATH MAGNETIC ACTUATOR AND DEVICES INCORPORATING THE SAME - Divergent flux path magnetic actuation is a technique employed to move and magnetically hold an armature in electromechanical actuator devices. These actuators are typically used for linear and reciprocating application with a shaft firmly fixed to an armature or central pole piece to convey movement and forces. By incorporating a bearing about the shaft, rotation can also be conveyed. Further these actuators are more adaptable to energy saving applications than conventional solenoids, specifically when their control coils are parallel connected to reduce the input voltage from a power source and electrically pulsed from a capacitor to reduce the energy input. Thus divergent flux path magnetic actuators can be used for multipurpose energy saving applications and adapted to a variety of devices that would commonly use conventional solenoids. | 12-12-2013 |
| 20130328650 | DIVERGENT FLUX PATH MAGNETIC ACTUATOR AND DEVICES INCORPORATING THE SAME - An energy efficient magnetic actuator includes an armature with attached shaft and a divergent flux path electromagnet with an outer magnetic enclosure containing a ring or toroid permanent magnet, two control coils one on either side of the permanent magnet, and a center pole piece through the permanent magnet and control coils having a bore to allow movement of the shaft. The majority of the magnetic flux in the center pole piece can be diverted in a single direction by a pair of control coils for the purpose of moving and magnetically latching the armature to the electromagnet or de-latching the armature from the electromagnet with aid of external forces to the shaft to overcome the small residual magnetic latching force resulting from leakage flux. The control coils may be energized in a variety of ways to achieved desirable linear or bi-linear motion of the armature. | 12-12-2013 |
| 20140104020 | IMPULSE SOLENOID VALVE - An impulse solenoid valve with at least one solenoid coil, a magnetically soft magnetic circuit which comprises a stationary yoke and a movable solenoid core, and with a permanent magnet which is accommodated in the magnetic circuit such that it sectionally interrupts the magnetic circuit, is characterized in that a first portion and a second portion of the magnetic circuit each directly contact the same on opposite sides of the permanent magnet, preferably over the full surface. | 04-17-2014 |
| 335235000 | With vibrating reed or spring bar-type armature | 1 |
| 20080252403 | Actuator - The invention relates to an actuator comprising a leaf spring attached to a carrier in at least one point of attachment, means for providing a magnetic field and means for guiding the magnetic field so as to provide a magnetic flux loop. A movable part of the leaf spring is movable relative to the means for providing the magnetic field. The actuator further comprises a drive core attached to the movable part of the leaf spring, which is incorporated in the flux loop, for imparting the relative movement to the movable part. The drive core is so positioned that the magnetic properties of the flux loop are changed under the influence of said relative movement for gearing the magnetic force on the drive core and the spring force of the leaf spring to each other. | 10-16-2008 |
