Class / Patent application number | Description | Number of patent applications / Date published |
335177000 | Plural magnets or flux sources | 51 |
20090134961 | Apparatus for Monitoring the State of a Protective Device of a Machine - The invention relates to an apparatus ( | 05-28-2009 |
20090273420 | ELECTROMAGNETIC SWITCH - An electromechanical switch may be actuated in a plurality of modes. A base portion of the electromechanical switch includes first and second electrical ports adapted to be electrically coupled in a plurality of modes. A first electromagnetic coil defines a longitudinal axis and is adapted to receive a first energizing current. A second electromagnetic coil extends along the longitudinal axis in spaced apart relationship with the first electromagnetic coil. The second electromagnetic coil is adapted to receive a second energizing current. The first and second ports are selectively coupled in any one of open-terminated mode, attenuation mode, and a short circuit mode based on the energy state of the first and second electromagnetic coils. | 11-05-2009 |
20110084786 | ELECTROMAGNETIC SWITCHING DEVICE - A first coil constitutes a first coil unit by placing an iron core plate between the first coil and an auxiliary yokes and engaging stopping parts provided in two holding members to an end surface in an axial direction of the auxiliary yoke. A second coil constitutes a second coil unit by forming magnetic path members by insertion to a resin member provided in a second bobbin unitarily, and fixing two terminals to the resin member. The first and the second coil units are united by connecting one terminal lead line of the first coil taken out from holding members to the first terminal, and connecting another terminal lead line to a surface of the magnetic path member. | 04-14-2011 |
20120025934 | PRINTED CIRCUIT BOARD EMBEDDED RELAY - According to one exemplary embodiment, an electromechanical relay may be described. The relay can be constructed using printed circuit board (PCB) construction, and can have at least a pair of coils, for example one on the top of or above the PCB, the other on the bottom of or below the PCB, at least two ferromagnetic cores, one of which can be set at the center of each coil, at least a set of contacts which can be on the surface of the printed circuit board, a spacer which can be set between the coils, and a magnet which can be set within the spacer. | 02-02-2012 |
20120188033 | INTEGRATED ELECTROMECHANICAL RELAYS - Electromechanical relays and semiconductor structures and microelectromechanical systems including at least part of an electromechanical relay are presented. For example, an electromechanical relay includes an electrically conductive terminal within a printed circuit board, one or more electrically conductive contacts, and one or more magnetic actuators. The one or more magnetic actuators are respectively associated with the one or more electrically conductive contacts and each magnetic actuator includes (i) a magnetic core within at least one via extending through one or more layers of the printed circuit board, and (ii) an electrical coil around at least a portion of the magnetic core and within one or more layers of the printed circuit board. Activation of the one or more actuators causes electrical contact between the terminal and an associated one of the one or more electrically conductive contacts. | 07-26-2012 |
20120206222 | Bi-stable electromagnetic relay with x-drive motor - An electromagnetic relay assembly comprises a rotatable electromagnetic coil assembly, first and second pairs of opposed permanent magnets, and a switch assembly. The coil assembly comprises a coil, a core, and a rotatable coil housing. The coil is wound around the core. The core comprises opposed core termini, and the coil housing has an axis of rotation orthogonal to the coil axis. The magnet pairs fixedly positioned adjacent the core termini such that the core termini are respectively displacable intermediate the magnet pairs. The coil operates to create a magnetic field directable through the core for imparting coil housing rotation about the axis of rotation via attraction to the positioned/anchored magnets. The core termini displace linkage arms, and the linkage arms actuate contact-spring assemblies of the switch assembly intermediate open and closed positions. | 08-16-2012 |
20120218063 | ELECTROMAGNETIC SWITCH WITH TWO ELECTROMAGNETS - There is an electromagnetic switch for a starter includes a first and second electromagnet and a frame and a cover. The first and second electromagnets are set alongside in the frame. The first and second electromagnets are configured to change a position with respect to the cover by rotating about the axis with respect to the frame. | 08-30-2012 |
20120256713 | ELECTROMAGNETIC RELAY - In an electromagnetic relay, length from a movable contact to an end portion of a movable element on a first end side is set greater than length from the movable contact to another end portion of the movable element on a second end side opposite to the first end side. A direction of a Lorentz force acting on a portion of the movable element from the movable contact to the end portion of the movable element on the first end side is conformed to a direction for bringing fixed contacts and movable contacts into contact with each other. Thus, separation between the movable contacts and the fixed contacts due to an electromagnetic repulsive force can be inhibited. | 10-11-2012 |
20130057370 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes an electromagnet part, an actuating part, a contact part and a base for holding the electromagnet part, the actuating part and the contact part. The contact part includes a pair of fixed plates having one end fixed to the base and the other end to which a fixed contact is attached, a pair of movable springs having one end fixed to the base and the other end to which a movable contact is attached, and a connecting portion extending between the movable springs and electrically connecting the movable contacts to each other. The actuating part is actuated so as to press only a part of the movable springs inside an area defined between longitudinal axes extending between one end and the other end of the movable springs through the movable contact, when the contact part closes. | 03-07-2013 |
20130285772 | SOFT-START SYSTEMS AND METHODS FOR VEHICLE STARTERS - Soft-start systems and methods for vehicle starters are provided. Embodiments provide a solenoid including: a first coil that receives power when an ignition switch is closed; a first plunger actuated when the first coil receives power; a first terminal configured to be abutted by a contact bar of the first plunger; a second coil that receives power when the contact bar of the first plunger abuts the first terminal; a second plunger actuated when the second coil receives power; and a second terminal configured to be abutted by a contact bar of the second plunger. Such a solenoid is configured to provide power at a first level to an attached motor when the contact bar of the first plunger abuts the first terminal and at a second level that is higher than the first level when the contact bar of the second plunger abuts the second terminal. | 10-31-2013 |
20130342291 | STARTER RELAY FOR A STARTING APPARATUS - A starter relay for a starting apparatus for an internal combustion engine has a reciprocating armature and a pull-in winding, to which current can be applied, and also a switch-on device for an electric starter motor. The switch-on device is operated by means of a switching element which is adjusted by an additional winding. | 12-26-2013 |
20150054604 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes a contact part including a fixed contact and a movable contact, and a drive part including a fixed core and a movable core. The movable core is connected to the movable contact via an axial core. The fixed core includes a plate member, which is positioned between the contact part and the drive part and includes a through hole through which the axial core is inserted. The movable core includes a convex part protruding in a direction opposing the plate member. The plate member includes a concave part opposing the convex part and having a shape corresponding to the convex part. | 02-26-2015 |
20150054605 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes a contact part including a fixed contact and a movable contact, the movable contact being displaceable in an approaching/separating direction with respect to the fixed contact; a drive part including a coil, a movable core, and a fixed core, the movable core being connected to the movable contact via an axial core, and the fixed core including a first plate member having a through hole through which the axial core is inserted and a second plate member that encapsulates the coil; and a permanent magnet polarized in a direction substantially perpendicular to the approaching/separating direction. The first plate member or the second plate member includes an extension part that extends toward the contact part, the extension part being configured to hold the permanent magnet. | 02-26-2015 |
335179000 | Of diverse magnetic characteristics (e.g., permanent plus electromagnet) | 28 |
20090167471 | MAGNETICALLY LATCHED MINIATURE SWITCH - A magnetic latch for switches is provided. | 07-02-2009 |
20090231070 | RELAY - A relay includes a permanent magnet and a magnetic circuit. The permanent magnet is disposed between a pair of electromagnets. The pair of the electromagnets is formed by winding coils around body portions of spools. Each spool has flanges integrally formed on both upper and lower end portions thereof. The magnetic circuit is formed by a yoke spanning the spools and the permanent magnet. The permanent magnet is held by the upper and lower flanges of a pair of the spools that are juxtaposed. | 09-17-2009 |
20100231333 | ELECTROMECHANICAL RELAY AND METHOD OF MAKING SAME - A double-pole-double-throw (DPDT) electromechanical relay employing a movable first magnet and a nearby third electromagnet is disclosed. The movable first magnet is permanently magnetized with a magnetic moment and has at least a first end and a second end. The third electromagnet, when energized, produces a third magnetic field which is primarily perpendicular to the magnetization direction of the first movable magnet and exerts a magnetic torque on the first magnet to force the first magnet to rotate and closes electrical conduction paths at the first end. Changing the direction of the electrical current in the third electromagnet changes the direction of the third magnetic field and thus the direction of the magnetic torque on the first magnet, and causes the first magnet to rotate in an opposite direction and opens the electrical conduction path at the first end and closes the electrical conduction paths at the second end. Latching, non-latching types, and various forms (normally open or closed, etc.) of relays can be formed by appropriately adjusting various force magnitudes. | 09-16-2010 |
20110193663 | SECURE NON-CONTACT SWITCH - A redundant non-contact switch reports a status as closed or open for a first member and a second member that move relative to each other between an open state and a closed state. In some embodiments, the redundant non-contact switch includes a wireless authentication (WA) pair and a magnetic pair. The WA pair may include a WA responder attached to one of the first member and the second member, and a WA interrogator attached to the other of the first member and the second member. The WA pair may be configured to register a WA status of closed or open, depending on a WA authentication between the WA responder and the WA interrogator. The magnetic pair may include a magnet attached to one of the first member and the second member, and a magnet sensor attached to the other of the first member and the second member. The magnetic pair may be configured to register a magnetic status of closed or open, depending on whether a magnet distance between the magnet and magnet sensor is beyond a threshold magnet distance. In some instances, the redundant non-contact switch reports the status as closed only if both the WA status is registered as closed and the magnetic status is registered as closed. | 08-11-2011 |
20120169441 | ELECTROMAGNET DEVICE AND SWITCH DEVICE USING ELECTROMAGNET DEVICE - In a switch device in which the main circuit contact sections of the switch device, an insulating rod, a driving rod, a contact pressure spring, an open spring, and an electromagnet are all coaxially arranged, a problem exists in that the axial dimension of the switch device becomes large. The present invention has been made to solve the aforementioned problem. An object is to obtain an electromagnet device and a switch device using the electromagnet device, in which shortening the axial dimension of the switch device is achieved by arranging the main circuit contact sections of the switch device, the insulating rod, the driving rod, the contact pressure spring, the open spring, and a part of the electromagnet in the same axial range. Particularly, the open spring and the electromagnet are arranged in the same axial region. | 07-05-2012 |
20120182099 | ELECTROMECHANICAL RELAY AND METHOD OF MAKING SAME - A relay comprises a movable body placed in a cavity which is formed on a substrate and surrounded by an enclosing side wall and sealed by a cover layer. The movable body comprises a first magnet which is permanently magnetized and has at least a first end. The enclosing side wall formed by ceramic layers, wherein a coil being formed by providing conductor traces on the ceramic layers and stacking the ceramic layers such that the conductor traces on adjacent ceramic layers are connected head to tail to form a continuous conduction path. When the coil is energized, a magnetic torque is generated on the first magnet to force the first magnet and the movable body to rotate. | 07-19-2012 |
20120200377 | MEMS Relay and Method of Forming the MEMS Relay - A micro-electromechanical systems (MEMS) relay includes a switch with a first contact region and a second contact region that are vertically separated from each other by a gap. The MEMS relay requires a small vertical movement to close the gap and therefore is mechanically robust. In addition, the MEMS relay has a small footprint and, therefore, can be formed on top of small integrated circuits. | 08-09-2012 |
20120262257 | APPARATUS FOR MONITORING THE STATE OF A PROTECTIVE DEVICE OF A MACHINE - An apparatus ( | 10-18-2012 |
20120306601 | ELECTROMAGNETIC MECHANISM AND MANUAL SWITCHGEAR OF ELECTROMAGNETIC MECHANISM - With a switchgear provided with an electromagnetic mechanism of the invention, a bolt rod is disposed for an opening spring whose load acts over an entire movable range of a moving core so as to receive a load of the opening spring in an expanding direction by the bolt rod. A load of the opening spring in the expanding direction is thus received by the bolt rod. The opening spring is compressed and expanded by rotating the bolt rod to be moved by the screw structure. Hence, in a case where maintenance is performed while maintaining a contact at an intermediate position between an opening position and a closing position, it becomes possible to perform a manual opening and closing operation at a lower speed than a de-energization operation while holding the contact at the intermediate position between the opening position and the closing position. | 12-06-2012 |
20130033344 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes an electromagnet that generates a magnetic field when electric current is supplied thereto, an actuator that is actuated in response to the generated magnetic field, a contact that opens and closes in response to the actuation of the actuator, the contact including a first contact and a second contact that contacts with the first contact when the contact closes, and a housing including a first housing that includes walls defining a recess that accommodates the electromagnet, the actuator and the contact therein, and a second housing that is fixed to the first housing and covers the recess of the first housing. The electromagnetic relay also includes a permanent magnet provided on an outer surface of the housing at a position corresponding to a position of the contact. | 02-07-2013 |
20130207751 | MAGNETIC ACTUATOR WITH TWO-PIECE SIDE PLATES FOR A CIRCUIT BREAKER - A magnetic actuator unit is provided for a circuit breaker arrangement, such as a medium voltage vacuum circuit breaker. The magnetic actuator unit includes a coil, a core, and a movable plate. The core accommodates the coil, and has a core element which is arranged between permanent magnets and flanks of the core. The movable plate is attracted by the core due to the magnetic field of the permanent magnets and the coil. The movable plate is actuating the circuit breaker arrangement when it is attracted by the core. The magnetic actuator unit includes a first attachment element for attaching the magnetic actuator unit to a member of the circuit breaker arrangement. The first attachment element is attached to the flanks and not to the core element of the core. | 08-15-2013 |
20130222083 | SOFT-COLLISION ELECTROMAGNETIC DRIVING MECHANISM - A soft-collision electromagnetic driving mechanism comprises a movable shaft driven by an electromagnetic mechanism, wherein the movable shaft is fixed to a movable iron core, an upper part of the movable shaft is connected to a movable damping mechanism, the movable damping mechanism comprises a first cylinder, the first cylinder has a movable damping piston therein, the movable damping piston is formed by a damping piston head and damping piston rods disposed at two sides of the damping piston head, first and second sealing chambers are at the two sides of the damping piston head respectively, a damping liquid is filled in the first and second sealing chambers, and a two-way discharge channel is arranged between the first and second sealing chambers. The driving mechanism is a permanent magnetic linear driving mechanism having a simple structure, a strong driving force and smooth contact, which can be used to drive electrical switches or devices requiring smooth contact, strong driving force and high speed. | 08-29-2013 |
20130285773 | DISCONNECTOR SWITCH FOR VOLTAGE TRANSFORMER - A disconnector unit for a medium voltage application, with a conductive pen inside a housing. The conductive pen is moveable between an operational position in which an electrical contact is provided between a first terminal and a second terminal positioned inside the housing, and an off position in which no electrical contact is present between the first terminal and the second terminal. The conductive pen includes a first actuating part inside the housing, optionally, in the form of a magnet. The disconnector unit further includes a second actuating part positioned outside the housing, wherein the first actuating part and second actuating part form a non-mechanical link. | 10-31-2013 |
20130321107 | FULLY RATED CONTACT SYSTEM HAVING NORMALLY OPEN CONTACT AND NORMALLY CLOSED CONTACTS - A contact system includes at least one first contact, at least one second contact, and at least one movable contact. A coil is provided which, when energized generates a force. A magnet is also provided, the magnet having a magnetic force. The forces of the coil and magnet attract the at least one movable contact to the at least one first contact. A return spring having a spring force cooperates with the at least one movable contact to return the at least one movable contact to the at least one second contact when the coil is not energized. The sum of the forces applied by the coil and the magnet are sufficient to overcome the spring force of the return spring to provide a balanced force to both the at least one second contact and the at least one first contact. | 12-05-2013 |
20140055220 | ELECTROMAGNET DEVICE - The present invention provides an electromagnet device including a horizontal portion of a yoke arranged near one end portion of an iron core, a movable iron piece which pivotably supported on a leading end edge portion of a vertical portion of the yoke which serves as a fulcrum, an end portion of the movable iron piece adapted to be attracted to a magnetic pole portion by a main magnetic circuit, the magnetic pole portion is arranged in the other end portion of the iron core. The main magnetic circuit is formed by applying a voltage to a coil wound around a periphery of the iron core and an auxiliary magnetic circuit formed in parallel with the main magnetic circuit, the auxiliary circuit including a permanent magnet is arranged near the one end portion of the iron core and a magnetic resistance portion, in which a magnetic flux of the permanent magnet is magnetically saturated. | 02-27-2014 |
20140055221 | ELECTROMAGNET DEVICE AND ELECTROMAGNETIC RELAY USING THE SAME - The present invention provides an electromagnet device including: an electromagnet block having a spool around which a coil is wound and an iron core inserted in a central hole of the spool; a yoke connected to an end portion of the iron core via a permanent magnet; a movable iron piece pivotably supported on a pivoting shaft center located at an end face edge portion of the yoke, the movable iron piece is adapted to pivot on a basis of magnetization and demagnetization of the electromagnet block, and a protrusion having a linear edge portion which extends in parallel to the pivoting shaft center and the protrusion protrudes from at least either the movable iron piece or the iron core, the protrusion protrudes in a facing direction in which the movable iron piece and the iron core face each other. | 02-27-2014 |
20140062625 | ELECTROMAGNETIC CONTACTOR - An electromagnetic contactor has a pair of fixed contacts disposed maintaining a predetermined interval and a movable contact disposed to be capable of connecting to and separating from the pair of fixed contacts; and an electromagnet unit that drives the movable contact. The electromagnet unit includes a magnetic yoke enclosing a plunger drive portion; a movable plunger in which a leading end is protruding through an aperture formed in the magnetic yoke, and urged by a return spring; and an annular permanent magnet enclosing a peripheral flange portion formed on a protruding end side of the movable plunger, and magnetized in a moving direction of the movable plunger. | 03-06-2014 |
20140167890 | ELECTRICAL SWITCH ARRANGEMENT AND DEVICE FOR CONTROLLING AN APPARATUS COMPRISING SUCH AN ARRANGEMENT - An electrical switch arrangement for controlling an electronic apparatus. The arrangement includes a reinforcement member, an electrical switch with tactile effect, a force transmission member which cooperates with the electrical switch with tactile effect, a permanent magnet which acts on a magnetic disc linked to the force transmission member to slow down the displacements of the force transmission member, and an electromagnet with controlled electrical power supply. When powered, the electromagnet produces a magnetic field which cancels the magnetic field of the permanent magnet. | 06-19-2014 |
20140354381 | ELECTROMAGNETIC OPPOSING FIELD ACTUATORS - Electromagnetic actuators capable of generating a symmetrical bidirectional force are disclosed. The electromagnetic actuators include a housing made of a ferromagnetic material and a shaft made of a magnetically inert material movable along an axis within the housing. In one type of actuator, captive permanent magnets are arranged on opposite interior end walls of the housing and an electromagnetic coil is mounted on a central portion of the shaft. The electromagnetic coil is capable of generating a force when energized that causes linear displacement of the shaft in either direction along its axis depending on the direction of current through the electromagnetic coil. In another type of actuator, captive electromagnetic coils are arranged on opposing inner end walls of the housing, and a permanent magnet is mounted on a central portion of the shaft. The electromagnetic coils are capable of generating a force when energized that causes linear displacement of the shaft in either direction along its axis depending on a direction of current through the electromagnetic coils. | 12-04-2014 |
20150042424 | OPERATING MECHANISM AND POWER SWITCH PROVIDED WITH THE OPERATING MECHANISM - A power switch operating mechanism comprises: a series of external permanent magnets, a series of internal permanent magnets, an internal pipe, an external pipe, a three-phase coil, an output ring and a power supply lead. In the series of external permanent magnets, the magnets are juxtaposed in such a way that their magnetic poles are rotated by a maximum of 90° in each case. In the series of internal permanent magnets, the magnetic poles have magnetization vector radial components that are in the same direction as that of the series of external permanent magnets and magnetization vector, axial components that are in the opposite direction to that of the series of external permanent magnets. The series of external permanent magnets and the series of internal permanent magnets are fixed so that their magnetization vector radial components are in the same direction. The three-phase coil is interposed with a fixed clearance between the series of external permanent magnets and the series of internal permanent magnets. | 02-12-2015 |
20150054606 | ELECTROMAGNETIC CONTACTOR - The electromagnetic contactor has a pair of fixed contacts disposed to maintain a predetermined interval and a movable contact disposed so as to be attachable to and detachable from the pair of fixed contacts, and an electromagnet unit that drives the movable contact. The electromagnet unit has a magnetic yoke enclosing a plunger drive portion, a movable plunger having a leading end protruding through an aperture formed in the magnetic yoke and biased by a return spring, an annular permanent magnet fixedly disposed so as to enclose a peripheral flange portion formed on a protruding end side of the movable plunger and magnetized in a direction in which the movable plunger can move, and an auxiliary yoke disposed on the annular permanent magnet at a side opposite to that of the magnetic yoke and regulating a movement of the peripheral flange portion of the movable plunger. | 02-26-2015 |
20150303017 | NOVEL-STRUCTURE ELECTROMAGNETIC RELAY CONTAINING PERMANENT MAGNET - A novel-structure electromagnetic relay containing a permanent magnet. At least three pairs of leading-out rods penetrate through a rectangular base, two pairs of leading-out rods are connected with the lower ends of four static spring plates respectively, an iron core and a coil framework are arranged at a diagonal position on the upper surface of the base, winding connectors of coils are connected with the other pair of leading-out rods respectively, the static spring plates are arranged at the other diagonal position on the upper surface of the base, a support is arranged at the top end of the coil framework, a pole face, a yoke and the permanent magnet are installed on the support, an armature, movable spring plates, the pole face and the yoke are located and connected through a middle shaft, and a sealing casing is covered outside the relay. | 10-22-2015 |
20150348730 | MILLIMETER-WAVE ELECTRO-MECHANICAL STRIPLINE SWITCH - An electromechanical microswitch, comprising first and second electromagnets mounted in spaced-apart orientation to one another where each electromagnetic has a field center located a first distance above the mounting surface. A permanent magnet is positioned between the electromagnets and includes a magnetic field center that is higher above the mounting surface than that of the electromagnets so that the permanent magnet is magnetically biased toward the mounting surface. A stripline switch element is mountable between the permanent magnet and mounting surface, and biased against circuit structures on the mounting surface, whereby the stripline switch element moves between first and second activated positions under influence of the electromagnets. | 12-03-2015 |
20160035525 | PRINTED MEMBRANE SWITCH ACTIVATED WITH MAGNETIC FORCE AND APPLICATIONS THEREOF - A magnetically actuated membrane switch shiftable between a rest or unmagnetized state, and an activated or magnetized state in the presence of a magnetic field. The membrane switch generally includes first and second conductive traces shiftable between a closed position wherein the conductive traces are electrically connected to make a circuit, and an open position wherein the conductive traces are electrically isolate to break a circuit. The membrane switch further includes a magnetic material that is activated by a magnetic field, thereby effecting a switching operation from a rest position to an activated position, and vice versa. | 02-04-2016 |
20160141132 | CONTACT DEVICE - An electromagnet device is configured to generate a magnetic attractive force between a stationary core and a movable core when electricity is applied to a coil, so that the movable core is moved in a direction for coming into contact with the stationary core, and a movable shaft is moved in a direction in which a first end face of the movable shaft separates from a movable terminal. After the movable contact comes in contact with the fixed contact, the movable core moves further in a direction for coming into contact with the stationary core. A yoke made of a magnetic body is disposed between the movable terminal and the first end of the movable shaft. | 05-19-2016 |
20160148769 | SELF-HOLDING MAGNET WITH A PARTICULARLY LOW ELECTRIC TRIGGER VOLTAGE - A self-holding magnet has a spring (accumulator spring) and a first armature. The self-holding magnet is capable of holding the first magnet armature against the spring force in a lift position which is determined by a stop. The stop determines a remaining air gap of a working air gap. The magnetic circuit of the self-holding magnet has a magnetic shunt with particularly low reluctance of the same order of magnitude as a series reluctance of the remaining working air gap(s). The working air gap(s) and the shunt are magnetically connected in parallel with the flow generated by a permanent magnet but in series with the flow generated by the trigger coil. The self-holding magnet additionally has at least one positive feedback device such as a compressible resilient stop or a shunt. | 05-26-2016 |
20160172136 | HALL EFFECT PUSHBUTTON SWITCH | 06-16-2016 |
20160172137 | ELECTROMAGNETIC STRUCTURE COMPRISING PERMANENT MAGNETS | 06-16-2016 |
335180000 | With common core or single armature | 7 |
20100060393 | ELECTROMAGNETIC LINEAR ACTUATOR - An electromagnetic linear actuator is disclosed that is capable of providing a large driving force adequately used for a high-voltage circuit breaker due to simplified structure and reduced manufacturing cost, the actuator comprising: stators each facing the other about an axle; a mover disposed with a moving core and a moving coil wrapping the moving core to magnetize the moving core during conduction, and capable of linearly and axially moving an interior of the stator; and permanent magnets, one facing the other, and fixedly mounted on both inner walls of the stator for providing a Lorentz force and reluctance force to the moving coil for movement when a current flows in the moving coil of the mover, and for providing a holding force to the mover for holding a position when the electric conduction to the moving coil of the mover is interrupted. | 03-11-2010 |
20100171577 | Integrated Microminiature Relay - A micro-relay that overcomes some of the limitations and drawbacks of the prior art is disclosed. The micro-relay comprising: (1) a first substrate comprising one or more monolithically integrated planar coils for generating a magnetic field; and (2) a second substrate comprising a magnetically actuated switch having a moving contact that selectively moves in a plane parallel to its substrate. The first and second substrate are aligned and bonded to collectively provide a closed magnetic circuit that efficiently channels the generated magnetic field through the switch. | 07-08-2010 |
20110043306 | MAGNETIC CHAMBER FOR ELECTROMAGNETIC LOW VOLTAGE SWITCHGEAR, AND ELECTROMAGNETIC LOW VOLTAGE SWITCHGEAR - A magnetic chamber is disclosed for electromagnetic low voltage switchgear, especially a compact reversing starter, including two magnetic drives which are each actuated by a main slide. The magnetic chamber is designed, in at least one embodiment, to receive both magnetic drives of the electromagnetic low voltage switchgear, and a mechanical reversing locking device held in a mobile manner for the alternating mechanical locking of the two magnetic drives is arranged in the magnetic chamber, the mechanical locking device acting on the two main slides. An electromagnetic low voltage switchgear is disclosed, especially a compact reversing starter, including two magnetic drives which are each actuated by a main slide, both magnetic drives being arranged in a magnetic chamber. The mechanical reversing locking device held in a mobile manner, in at least one embodiment, engages with the main slide of one of the magnetic drives, according to the position of the locking device, in order to fix said magnetic drive. | 02-24-2011 |
20120235775 | ELECTROMAGNETIC RELAY - In an electromagnetic relay, length from a movable contact to an end portion of a movable element on a first end side is set greater than length from the movable contact to another end portion of the movable element on a second end side opposite to the first end side. A direction of a Lorentz force acting on a portion of the movable element from the movable contact to the end portion of the movable element on the first end side is conformed to a direction for bringing fixed contacts and movable contacts into contact with each other. Thus, separation between the movable contacts and the fixed contacts due to an electromagnetic repulsive force can be inhibited. | 09-20-2012 |
20120242430 | RELAY WITH MULTIPLE COILS - A relay with multiple coils includes a base which has two fixed contacts, a coil assembly which has a U-shaped armature, a U-shaped iron core, two tubular bobbins received between the U-shaped armature and the U-shaped iron core, two coils respectively wound around the tubular bobbins. A spring member is movable above the coil assembly. The spring member has two moving contacts corresponding to the fixed contacts. A coil spring is disposed between the spring member and the coil assembly. When each coil induces a magnetic field by supplying electric current, the coil spring is compressed such that the moving contacts connect with the fixed contacts; when no electric current is supplied, the coil spring provides the restoring force to draw the spring member backward. Therefore, the relay acts as a switch for adapting to open/close a circuit connected to the relay. | 09-27-2012 |
20140145804 | MAGNETIC RELAY DEVICE MADE USING MEMS OR NEMS TECHNOLOGY - A magnetic relay device having a substrate of semiconductor material houses two through magnetic vias of electrically conductive ferromagnetic material. At least one coil is arranged underneath a first surface of the substrate in proximity of at least one between the first and second magnetic vias, and a contact structure, of ferromagnetic material, is arranged over a second surface of the substrate and is controlled by the magnetic field generated by the coil so as to switch between an open position, wherein the contact structure electrically disconnects the first and second magnetic vias, and a close position, wherein the contact structure electrically connects the first and second magnetic vias. | 05-29-2014 |
20160064172 | PLUNGER SWITCH ASSEMBLY AND METHOD OF OPERATION - A switch assembly has a housing with a passage extending along a longitudinal axis. A plunger positioned within the passage is movable along the axis relative to the housing between an extended position protruding a first axial distance out of the housing and a depressed position protruding a second axial distance out of the housing less than the first distance. A magnetic biasing device biases the plunger towards the extended position. The magnetic biasing device includes a first magnetic member secured to the housing and a second magnetic member secured to the plunger and movable with the plunger relative to the first magnetic member. An electrical component positioned within the passage has a pair of terminal members and a sensor. | 03-03-2016 |
335183000 | Magnetic fields or torques acting alternately in opposite directions | 2 |
20090212889 | EDDY CURRENT INDUCTIVE DRIVE ELECTROMECHANICAL LINEAR ACTUATOR AND SWITCHING ARRANGEMENT - The present invention is directed to an inductively driven electromagnetic linear actuator arrangement employing eddy currents induced by a fixed drive coil to drive its armature. Eddy current focusing fields are employed to direct the eddy currents using Lorentz forces to maximize armature speed. The armature includes a shorted driven coil in a DC magnetic field. This can be supplied by a permanent magnet. When current is applied, a force is felt by the coil in a direction perpendicular to the magnetic field. Such an actuator is well suited for electrical switching applications including transfer switching applications, circuit breaker applications, and ground fault interrupter applications. | 08-27-2009 |
20100283561 | MAGNETIC LATCHING ACTUATOR - A magnetic latching actuator operable to control the movement of at least a first contact and second contact between a closed position in which the contacts physically engage each other and an open position in which the contacts are spaced from each other. The magnetic latching actuator includes first and second stationary permanent magnets oriented such that the first magnetic field created by the first magnet and the second magnetic field created by the second magnet are in opposite directions. An actuation coil surrounds both the first and second magnets. Current is supplied to the actuation coil in a first direction to create a first magnetic field or a second direction to create a second actuation magnetic field opposite the first actuation magnetic field. A yoke is movable relative to the first and second magnets to cause the first and second contacts to move between the open and closed positions. | 11-11-2010 |
335184000 | With plural reciprocating armatures aligned or rigidly connected | 1 |
20110095852 | ELECTROMAGNETIC SWITCHING DEVICE - In an electromagnetic switch device, a direction where a first plunger moves at the time a solenoid for pinion extrusion operates and a direction where a second plunger moves at the time a solenoid for motor energization operates are constituted in the same direction. A concave portion having a predetermined depth D is formed in a first fixed iron core used for the solenoid for pinion extrusion and a stopper member that controls a returning position of the second plunger is arranged therein. A part of the second plunger overlaps to the first fixed iron core in the axial direction. | 04-28-2011 |