| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 335078000 | Polarity-responsive | 40 |
| 20080224803 | SWITCH - A central magnet of a plurality of magnets arranged to be different in polarities is detected by two hall ICs; therefore, reduction in size can be achieved by reducing the number of the magnets; and at the same time, the number of the hall ICs can be maintained and the reliability can be secured, as compared with a configuration in which the magnets and the hall ICs individually respond in one to one correspondence. | 09-18-2008 |
| 20080272867 | MEMS DEVICE WITH INTEGRAL PACKAGING - A MEMS device and method of making same is disclosed. In one embodiment, a micro-switch includes a base assembly comprising a movable structure bearing a contact pad. The base assembly is wafer-scale bonded to a lid assembly comprising an activator and a signal path. The movable structure moves within a sealed cavity formed during the bonding process. The signal path includes an input line and an output line separated by a gap, which prevents signals from propagating through the micro-switch when the switch is deactivated. In operation, a signal is launched into the signal path. When the micro-switch is activated, a force is established by the actuator, which pulls a portion of the movable structure upwards towards the gap in the signal path, until the contact pad bridges the gap between the input line and output line, allowing the signal to propagate through the micro-switch. Prior to bonding, the MEMS structures are annealed on a first wafer and the conductive traces and other metals are annealed on a second wafer to allow each wafer to be processed separately using different processes, e.g., different annealing temperatures. | 11-06-2008 |
| 20080278268 | Dual substrate MEMS plate switch and method of manufacture - Systems and methods for forming an electrostatic MEMS plate switch include forming a deformable plate on a first substrate, forming the electrical contacts on a second substrate, and coupling the two substrates using a hermetic seal. The deformable plate may have at least one shunt bar located at a nodal line of a vibrational mode of the deformable plate, so that the shunt bar remains relatively stationary when the plate is vibrating in that vibrational mode. The hermetic seal may be a gold/indium alloy, formed by heating a layer of indium plated over a layer of gold. Electrical access to the electrostatic MEMS switch may be made by forming vias through the thickness of the second substrate. | 11-13-2008 |
| 20080309438 | MICRO-ELECTROMECHANICAL SYSTEM BASED SWITCHING - A current control device is disclosed. The current control device includes control circuitry and a current path integrally arranged with the control circuitry. The current path includes a set of conduction interfaces and a micro electromechanical system (MEMS) switch disposed between the set of conduction interfaces. The set of conduction interfaces have geometry of a defined fuse terminal geometry and include a first interface disposed at one end of the current path and a second interface disposed at an opposite end of the current path. The MEMS switch is responsive to the control circuitry to facilitate the interruption of an electrical current passing through the current path. | 12-18-2008 |
| 20090009273 | Hall Effect Switching Circuit and Controlling Method for same - A Hall effect switching circuit includes a magnetic south pole detecting unit configured for detecting and judging a magnetic field intensity of a magnetic south pole to produce a first triggering signal; a magnetic north pole detecting unit configured for detecting and judging a magnetic field intensity of a magnetic north pole to produce a second triggering signal; and a detecting and controlling unit connected to the magnetic south pole detecting unit and the magnetic north pole detecting unit. The detecting and controlling unit is configured for judging a polarity of a magnetic field according to the first triggering signal and the second triggering signal, and selecting a triggering signal corresponding to the polarity of the magnetic field as a switching signal of the Hall effect switching circuit in a predetermined detect and setup time after starting the Hall effect switching circuit. | 01-08-2009 |
| 20090033445 | MEMS actuators with stress releasing design - The micro-electromechanical (MEMS) actuator comprises a hot arm member and a cold arm member. The cold arm member comprises at least two longitudinally spaced-apart flexors. The actuators may also be constructed with at least one among the hot arm member and the cold arm member comprising at least one spring section. The stress in this improved MEMS actuator is more uniformly distributed, thereby reducing the mechanical creep and improving its reliability as well as its operation life. | 02-05-2009 |
| 20090058575 | Magnetic activation and deactivation circuit and system - A circuit ( | 03-05-2009 |
| 20090066449 | Electromechanical Latching Relay and Method of Operating Same - A latching relay employing a movable cantilever with a first permanent magnet and a nearby second magnet is disclosed. The permanent magnet affixed to the cantilever is permanently magnetized along its long (horizontal) axis. The cantilever has a first end associated to the first pole (e.g., north pole) of the first magnet, and a second end associated to the second pole (e.g., south pole) of the first magnet. When the first end of the cantilever approaches the second magnet, the first pole of the first magnet induces a local opposite pole (e.g., south pole) in the second magnet and causes the first end of the cantilever to be attracted to the local opposite pole of the second magnet, closing an electrical conduction path (closed state). An open state on the first end of cantilever | 03-12-2009 |
| 20090085699 | MEMS ACTUATOR - Apparatus including substrate, pusher assembly, and flexor assembly adjacent to pusher assembly. Pusher assembly includes hot and cold pusher arms. First ends of hot and cold pusher arms are anchored over substrate. Second ends of hot and cold pusher arms are coupled together and suspended for lateral displacement over substrate. Flexor assembly includes flexor arm, and conductor having actuator contact. First end of flexor arm is anchored over substrate. Pusher assembly is configured for causing lateral displacement of second end of flexor arm and of actuator contact over the substrate. Method includes providing apparatus and causing pusher assembly to laterally displace second end of flexor arm and actuator contact over substrate. | 04-02-2009 |
| 20090261927 | Coupled Electromechanical Relay and Method of Operating Same - An electromechanical relay employing a movable first permanent magnet and a nearby third electromagnet is disclosed. The movable first magnet is permanently magnetized and has at least a first 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 an electrical conduction path 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. Multiple magnets can be stacked together to form multi-pole-multi-throw relays. Latching and non-latching types of relays can be formed by appropriately using soft and permanent magnets as various components. | 10-22-2009 |
| 20100117769 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes: a casing formed with an opening; a relay core member adapted for generating an electromagnetic field and inserted into the casing through the opening; an actuating set that is inserted into the relay core member, that is exposed from the casing, and that can be driven by a magnetic attraction force attributed to the electromagnetic field; a terminal set disposed on the casing and adapted to be actuated by the actuating set to thereby act as a switch mechanism; and a housing accommodating the casing, the relay core member, the actuating set and the terminal set. | 05-13-2010 |
| 20100156577 | MICRO-ELECTROMECHANICAL SYSTEM SWITCH - A micro electro-mechanical system switch is presented. The switch includes a base substrate having a support surface. An actuating surface having a notch and an electrical contact surface having an extension is provided. The extension is disposed within the notch. A beam is attached to the base substrate. The beam includes an actuatable free end that is configured to flex upon actuation and to make contact with at least a portion of the extension and carry current therethrough. | 06-24-2010 |
| 20100182109 | Electromagnetic relay - An electromagnetic relay includes a casing, and a relay core member sealed in the casing and including an electromagnetic unit and a terminal unit. The electromagnetic unit includes a spool frame set having an engagement portion, a coil unit wound on the spool frame set, and a pair of coil winding pins. Each of the coil winding pins has a conductive portion exposed from one of opposite first sides of the spool frame set, and a coil winding portion extending along one of opposite second sides of the spool frame set. The terminal unit includes an engaging block having an engagement portion connected to the engagement portion of the spool frame set for preventing separation of the terminal unit from the electromagnetic unit, a terminal set, and an armature component. | 07-22-2010 |
| 20100182110 | 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 a spacer layer and sealed by a cover layer. The movable body comprises a first magnet which is permanently magnetized and has at least a first end. A nearby switching electromagnet, when energized, produces a switching magnetic field which is primarily perpendicular to the magnetization direction of the first magnet and exerts a magnetic torque on the first magnet to force the first magnet and said movable body to rotate and close an electrical conduction path at the first end. Changing the direction of the electrical current in the switching electromagnet changes the direction of the switching magnetic field and thus the direction of the magnetic torque on the first magnet, and causes the first magnet and said movable body to rotate in an opposite direction and opens the electrical conduction path at the first end. The first magnet can comprise multiple magnetic layers to form relatively closed magnetic circuits with other magnetic components. Latching and non-latching types of relays can be formed by appropriately using soft and permanent magnets as various components. | 07-22-2010 |
| 20100214044 | ELECTROMECHANICAL RELAY AND METHOD OF OPERATING SAME - An electromechanical relay employing a movable first magnet and a nearby switching electromagnet is disclosed. The movable first magnet is permanently magnetized with a magnetic moment and has at least a first end. The switching electromagnet, when energized, produces a switching 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 an electrical conduction path at the first end. Changing the direction of the electrical current in the switching electromagnet changes the direction of the switching 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. Multiple magnetic layers can be arranged to form closed magnetic circuits to facilitate switching and maintaining switched states. Latching and non-latching types of relays can be formed by appropriately adjusting various force magnitudes. | 08-26-2010 |
| 20100295638 | METHOD OF SWITCHING A MAGNETIC MEMS SWITCH - A MEMS magnetic flux switch is fabricated as a ferromagnetic core. The core includes a center cantilever that is fabricated as a free beam that can oscillate at a resonant frequency that is determined by its mechanical and material properties. The center cantilever is moved by impulses applied by an associated motion oscillator, which can be magnetic or electric actuators. | 11-25-2010 |
| 20110037542 | Miniature Magnetic Switch Structures - A switching device structure comprising a top magnet, a bottom magnet, and a movable member disposed between the top and bottom magnets, the movable member having an electromagnet positioned thereon, the electromagnet comprising a plurality of laminated layers, the layers including a layer bearing an iron core and a number of armature layers which establish electrical conductor windings around the iron core. | 02-17-2011 |
| 20110181381 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes multiple contact sets each including a fixed contact and a movable contact displaceable in a first direction to approach the fixed contact and in a second direction to move away from the fixed contact; multiple permanent magnets each provided on the peripheral side of a corresponding one of the contact sets and having a polarity direction perpendicular to the first and second directions; and multiple ferromagnetic bodies parallel to the polarity directions of the permanent magnets and the first and second directions, wherein in a DC electric current flowing through each of the contact sets, the direction of a force exerted based on the permanent magnet is equal to the direction of a force exerted based on the ferromagnetic body. | 07-28-2011 |
| 20110267157 | Bistable relay - On a bistable relay, in particular for the high-current range, having a coil arrangement and a movable armature, which armature is attracted or repelled by the magnetic flux that can be generated in the coil arrangement and in the process opens or closes contacts, and in the relay, at least one retention element is provided, with which the armature is fixable in its position, an electric reservoir is provided, with the energy of which the armature is movable into an OFF position of the relay. | 11-03-2011 |
| 20120092094 | MAGNETIC SWITCH - A magnetic switch comprises a first frame and a second frame, a stationary contact to face the second frame, a movable contact contactable with or separated from the stationary contact, a coil assembly that generates a magnetic force in accordance with a flow of an electric current, a movable unit that makes the movable contact to be contactable with or separated from the stationary contact, a contact spring that applies an elastic force to the movable contact in a direction that the movable contact moves toward the stationary contact, a movable distance limiting unit limiting a movable distance of the movable unit to determine a contact pressure distance that the movable contact contacts the stationary contact and the contact spring is pressed, and a return spring to apply an elastic force to the movable unit in a direction that the movable contact is separated from the stationary contact. | 04-19-2012 |
| 20120161908 | Polarized Electromagnet - A polarized electromagnet that can suppress magnetic flux leakage in a position that does not affect the suction force between an interior yoke and an exterior yoke, and increase the suction force of a permanent magnet is provided. A polarized electromagnet includes a spool | 06-28-2012 |
| 20130057368 | 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. | 03-07-2013 |
| 20130271244 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes multiple contact sets each including a fixed contact and a movable contact displaceable in a first direction to approach the fixed contact and in a second direction to move away from the fixed contact; multiple permanent magnets each provided on the peripheral side of a corresponding one of the contact sets and having a polarity direction perpendicular to the first and second directions; and multiple ferromagnetic bodies parallel to the polarity directions of the permanent magnets and the first and second directions, wherein in a DC electric current flowing through each of the contact sets, the direction of a force exerted based on the permanent magnet is equal to the direction of a force exerted based on the ferromagnetic body. | 10-17-2013 |
| 20130278362 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes: a yoke capable of changing a magnetic pole thereof by an electromagnet; an armature that is magnetized by a permanent magnet and contacts with or separates from the yoke in accordance with the magnetic pole of the yoke; a movable contact that contacts with a fixing contact; an elastic body that biases the movable contact; and a pressing member that presses the elastic body in accordance with a movement of the armature to cause the movable contact to at least contact with or separate from the fixing contact, wherein a cover fixing the permanent magnet and the armature, and the pressing member are integrally formed. | 10-24-2013 |
| 20140043118 | Miniature Magnetic Switch Structures - According to an illustrative embodiment, a switching device structure is provided comprising a cavity defined by a laminated structure; and a moveable member comprising a plurality of laminated layers, wherein the moveable member is suspended from a side surface of the cavity by a hinge comprising a plurality of adjacent electrical conductors. In one embodiment, a current conducting coil is formed within the moveable member, and first and second of the adjacent electrical conductors of the hinge respectively comprise coil-in and coil-out conductors electrically connected to the coil. In such an embodiment, the third and fourth of said electrical conductors may respectively comprise tip and ring conductors. In illustrative embodiments, each of the electrical conductors of the hinge may comprise a resilient or flexible copper material. | 02-13-2014 |
| 20140203897 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes multiple contact sets each including a fixed contact and a movable contact displaceable in a first direction to approach the fixed contact and in a second direction to move away from the fixed contact; multiple permanent magnets each provided on the peripheral side of a corresponding one of the contact sets and having a polarity direction perpendicular to the first and second directions; and multiple ferromagnetic bodies parallel to the polarity directions of the permanent magnets and the first and second directions, wherein in a DC electric current flowing through each of the contact sets, the direction of a force exerted based on the permanent magnet is equal to the direction of a force exerted based on the ferromagnetic body. | 07-24-2014 |
| 20150294823 | MICRO ELECTROMAGNETICALLY ACTUATED LATCHED SWITCHES - Micro-electromagnetically actuated latched miniature relay switches formed from laminate layers comprising a spring and magnet, electromagnetic coils, magnetic latching material, and transmission line with contacts. Preferably the miniature relay switches transmit up to about 50 W of DC or AC line power, and carry up to about 10 A of load current, with an overall volume of less than about 100 mm | 10-15-2015 |
| 335080000 | Armature structure | 4 |
| 20110063055 | Latching micro-magnetic relay and method of operating same - A micro-machined magnetic latching relay has a moveable cantilever comprising a soft magnetic material and having a first end and a second end. The cantilever has a rotational axis which is a flexure supported by a substrate. A first permanent and a second permanent magnet are disposed near the first end and the second end of the cantilever respectively. Each of the two magnets produces a magnetic force and a torque on the cantilever. The first permanent magnet, second permanent magnet and the substrate are arranged to provide two stable positions for the cantilever. An electromagnet provides a temporary switching magnetic field to adjust the local magnetizations across the magnetic cantilever, causing changes of magnetic forces and torques on the cantilever. As a result, the direction of a sum of torque on the cantilever is reversed. Therefore, the cantilever is switched from one stable position to the other. | 03-17-2011 |
| 20140253265 | ELECTROMAGNETIC ACTUATING APPARATUS, IN PARTICULAR FOR CAMSHAFT ADJUSTMENT OF AN INTERNAL COMBUSTION ENGINE - An electromagnetic actuating apparatus with a first armature arrangement axially displaced between a rest and actuating position and connected to a first actuating element. A pole core is brought into magnetic operative connection with the first armature arrangement. An axially oriented coil unit is energized, influencing the magnetic connection between the first pole core and the first armature arrangement, and a second armature arrangement is connected to a second actuating element and axially displaced between a rest and actuating position. A second pole core can be brought into magnetic operative connection with second armature arrangement, its pole core oriented axially to first pole core influencing its magnetic operative connection with second armature arrangement. A permanent magnet unit, the magnet axis is oriented radially and stationary, generates a magnetic operative connection both between the first pole core and first armature arrangement and between the second pole core and second armature arrangement. | 09-11-2014 |
| 335081000 | Freely movable within coil or magnetic field between poles | 2 |
| 20090322453 | ELECTROMAGNET DEVICE - A polar electromagnet device has a drive shaft comprising an axis center supported so as to reciprocate in an axis center direction at a center hole of a spool wound with a coil, and a movable iron core attached to a lower end of the drive shaft on the axis center. The drive shaft is reciprocated with the movable iron core which reciprocates based on excitation and demagnetization of the coil. A permanent magnet is integrally arranged at the movable iron core on the same axis center. | 12-31-2009 |
| 20130229245 | DRIVING DEVICE AND RELAY - A relay has a driving device that includes a magnet portion, two electromagnets, a yoke portion fixed to the above elements, and a rocking armature. The magnet portion includes a ferrite permanent magnet polarized in a direction perpendicular to the yoke portion and a bearing surface facing way from the yoke portion. Each electromagnet includes an iron core fixed to the yoke portion and a coil wound thereon. The two iron cores are arranged at opposite sides of the magnet portion. The rocking armature includes two arms connected to each other with an included angle formed therebetween and a convex joint of the two arms. The convex joint abuts against the bearing surface and the rocking armature pivots about the convex joint between a first position and a second position in which the rocking armature contacts a respective one of the iron cores. | 09-05-2013 |
| 335083000 | Contact structure of composition | 1 |
| 20140232489 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes a contact that includes a fixed contact and a movable contact, a permanent magnet provided on the peripheral side of the contact, and a non-magnetic body. The movable contact is displaceable in a first direction to move toward the fixed contact and in a second direction to move away from the fixed contact. The permanent magnet has a polarity direction perpendicular to the first and second directions. The non-magnetic body faces toward the direction of a Lorentz force that acts based on the permanent magnet in a direct electric current flowing through the contact. | 08-21-2014 |
| 335084000 | Magnetic structure (e.g., saturable) | 8 |
| 20090189720 | DUAL-ACTUATION-MODE CONTROL DEVICE - The present invention relates to a control device ( | 07-30-2009 |
| 20100176902 | Magnetic Drive System for a Switching Device - A magnetic drive system for switchgear has a magnet yoke in which a solid armature made of a magnetic material is guided in a linearly displaceable manner between two opposing end positions. The magnetic drive system further has at least one permanent magnet for generating a magnetic flux in the magnet yoke and at least one coil by which the armature can be moved back and forth between the end positions thereof. The armature is provided with elongated hollow channels for preventing eddy current losses. So as not to excessively reduce the stability of the armature by the channels made therein, the channels in the armature are configured in a closed fashion on the circumference thereof. | 07-15-2010 |
| 20130076462 | BISTABLE MAGNETIC ACTUATORS - In a bistable magnetic actuator with a polarized magnetic circuit with parallel operating air gaps, wherein between the outer legs of a U-shaped soft-iron yoke a flat permanent magnet is integrated that carries a soft-iron centre leg and applies a permanent-magnetically created magnetic flux to a rocking armature supported on the centre leg, wherein at each outer leg a separately controllable excitation winding provides swiveling pulses for the rocking armature to swivel from one permanent-magnetically self-holding swivel position into the other, the permanent-magnetically created magnetic flux through the magnetic circuit closed over the rocking armature in each case for an electromagnetic magnetic flux created by the excitation winding of said magnetic circuit in a direction opposed to the permanent-magnetically created magnetic flux commutates into the other parallel magnetic circuit with the electromagnetically not excited excitation winding, swiveling over the rocking armature. | 03-28-2013 |
| 20160181039 | CIRCUIT BREAKERS WITH POLARITY SENSITIVE SHUNT TRIP MECHANISMS AND METHODS OF OPERATING THE SAME | 06-23-2016 |
| 20160189901 | DC OPERATED POLARIZED ELECTROMAGNET AND ELECTROMAGNETIC CONTACTOR USING THE SAME - The DC operated polarized electromagnet includes a spool around which an excitation coil is wound and that has a central opening, a plunger having first and second armatures, fitted individually, an outer yoke enclosing opposing side faces of the spool so as to attract the first armature, an inner yoke arranged on the inner side of the outer yoke so as to attract the second armature, and permanent magnets arranged between the outer yoke and the inner yoke, and reduces magnetoresistance by setting the thickness of the outer yoke thicker than the thickness of the inner yoke so that convergent magnetic flux in the plunger is diverted into the outer yoke. | 06-30-2016 |
| 20160196941 | BISTABLE RELAY AND BISTABLE ACTUATOR | 07-07-2016 |
| 335085000 | Pole structure | 2 |
| 20080238589 | Air cap design for controlling spray flux - Methods and apparatus to improve air cap design for controlling spray flux are described. In one embodiment, a plurality of opposing gas inlets are provided in an air cap, e.g., to reduce or eliminate potential opposing turbulence inside the air cap. Other embodiments are also described. | 10-02-2008 |
| 20150048909 | Polarized Electromagnetic Relay and Method for Production Thereof - A polarized relay comprising an electromagnet, a two-pole or three-pole permanent magnet, an armature, and switches, which are mounted in and on a shelf-like support component. | 02-19-2015 |
