Abstract: A circuit breaker is comprised of a make-and-break mechanism part disposed between frame plates opposite to each other; a base in which a breaking portion including cross bar, moving contact, fixed contact and arc-extinguishing device, and an over-current trip device are contained; a middle base, in which a partition wall separating the breaking portion from the make-and-break mechanism part, and the breaking portion from the over-current trip device, is provided; and a cover for covering the base and middle base. A frame of the make-and-break mechanism part is secured to the base through the middle base, and the secured part of the frame and the inner bottom face of the base are disposed in the proximity.

Abstract: A contact spring assembly is provided for an electrical switching apparatus including a movable contact assembly and a stationary contact assembly having stationary electrical contacts. The movable contact assembly includes a carrier assembly, and movable contact arms pivotably coupled to the carrier assembly and carrying movable electrical contacts. The contact spring assembly includes a first contact spring housing member, a second contact spring housing member coupled to and disposed opposite from the first contact spring housing member, a spring guide disposed between and coupled to at least one of the first and second contact spring housing members and including spring holes, springs received in the spring holes, and sliders coupled to the springs. The springs and sliders individually bias the movable contact arms and movable electrical contacts toward engagement with corresponding stationary electrical contacts. A movable contact assembly and an electrical switching apparatus are also disclosed.

Abstract: A connecting system includes an electromagnetic switchgear, especially contactor, and a connector. In at least one embodiment, the system makes it easier to connect auxiliary and control lines. For this purpose, the connecting system, in at least one embodiment, includes at least one electromagnetic switchgear, especially a contactor. The switchgear includes a plurality of auxiliary contact connections and a coil connection terminal block. The coil connection terminal block is configured in such a manner that the coil connections lie in a plane with at least one auxiliary contact connection. The connecting system also includes, in at least one embodiment, a connector for simultaneously contacting the coil and auxiliary contact connections of one or more switchgears which connections lie in one plane. The connector has an internal wiring for electrically interconnecting the coil and/or auxiliary contact connections.

Abstract: An electromagnetic relay system is constituted by containing an electromagnetic relay arranged in a case and including a coil, a movable contact and a plurality of fixed contacts, a positive terminal and a negative terminal formed to project from the case, and load terminals formed to project from the case and connectable to a motor. An electric current flowing in the motor is controlled by controlling an electric current flowing in the coil. A ground line extended from the coil is connected to the negative terminal via a coil spring in the case.

Abstract: Disclosed is a control switch system for a vehicle, using a jog shuttle, by which a driver can rapidly and correctly select and control operation of a sound system in the vehicle even during driving of the vehicle. Since the control switch system uses simple members such as springs and metal balls, the cost of the vehicle decreases.

Abstract: An electromagnetic breaker includes a housing (10) having two conductors (30, 31), and a slidable conductor (40) slidably disposed in the housing (10) and movable to engage with the conductors (30, 31) and to electrically couple the conductors (30, 31) together. An electromagnetic device (2) may selectively force the slidable conductor (40) toward and away from the conductors (30, 31). The slidable conductor (40) includes a magnetic member (44), the electromagnetic device (2) includes a core for acting with the magnetic member (44). A spring device (14) may bias the conductors (30, 31) toward the slidable conductor (40). Another spring device (47) may bias the slidable conductor (40) away from the conductors (30, 31).

Abstract: The invention relates to an electromagnetic relay with an electromagnetic coil for exciting a magnetic field and an iron circuit for guiding the magnetic field, wherein the electromagnetic coil surrounds at least part of the iron circuit and the iron circuit comprises a core, a movable armature and a yoke. The electromagnetic relay further comprises a contact system with a movable contact bridge which can be actuated dependent on the magnetic field. In order to provide an electromagnetic relay that is able to disconnect or connect a plurality of electric contacts simultaneously in a particularly secure and loss reduced manner, according to the present invention there are provided at least three electric contacts on the contact bridge. According to an advantageous embodiment, the contact system comprises three fixed contacts which are corresponding each to one of three phases and the contact bridge forms a star point of the three phases.

Abstract: A modular asynchronous contactor assembly includes a contactor for each phase or pole of an electrical device. The contactor assembly is applicable as both a switching device and an isolation or load protection device. As such, each contactor is constructed so that each includes multiple contact assemblies. Moreover, the contactors within a single contactor assembly or housing can be independently controlled so that the contacts of one contactor can be opened without opening the contacts of the other contactors of the contactor assembly.

Abstract: A modular asynchronous contactor assembly includes a contactor for each phase or pole of an electrical device. The contactor assembly is applicable as both a switching device and an isolation or load protection device. As such, each contactor is constructed so that each includes multiple contact assemblies. Moreover, the contactors within a single contactor assembly or housing can be independently controlled so that the contacts of one contactor can be opened without opening the contacts of the other contactors of the contactor assembly.

Abstract: A contractor (1) having at least two spaced-apart fixed contacts (2, 3) and an at least sectionwise electrically conductive, movable contact bridge (9) having at least two contact points (8) which are associated with the fixed contacts (2, 3). The contact bridge is adapted to be moved to a switched position by a switching force (B) and to a rest position by an opening force (V). The opening force (V) is produced by a pretensioning device (13). A particularly advantageous distribution of the opening force to the two contact points and a reliable switching operation is achieved in that one contact (2) is arranged between the other contact (3) and a point where the opening force (V) acts on the contact bridge (9).

Abstract: A movable contact arrangement suitable for use in a switching device has a rigid contact body and a flexible conductor piece connecting the contact body to a fixed conductor. The contact body is connected to the conductor piece by mechanically compressing a section of a semifinished product in the form of a cable or strand, with the flexible conductor piece being formed by an uncompressed part of the semifinished product. The compressing operation can also be used at the same time to produce the contact body from the semifinished product. The method described allows low-cost production of contact modules for power circuit breakers used in sophisticated mechanical and electrical equipment.

Abstract: A switching device selectively connects a number of incoming electrical lines with a number of outgoing electrical lines. The incoming and outgoing lines are each connected to individual contact surfaces, respectively. The contact surfaces are arranged in concentric ring-shaped areas. A maneuvering unit is arranged in the center of the ring-shaped areas. A driver rotates the maneuvering unit. A number of contact elements are positioned by the maneuvering unit, to obtain electrical contact between specific, contact surfaces.

Abstract: A magnetically coupled switch that utilizes a flex armature has a user manipulated holder that carries at least one magnetic coupler made of magnetic material. The flex armature is a substantially flat piece of flexible magnetic material that is magnetically attracted to the at least one magnetic coupler. A carrier layer having electrical conductors formed thereon is intermediate the flex armature and magnetic coupler such that the electrical conductors are electrically connected by the flex armature where the flex armature is magnetically attracted to the magnetic coupler. In the absence of a magnetic coupler, the flex armature is normally spaced from the electrical conductors on the carrier layer. Preferably, there is a bottom cover that encloses a cavity that contains the flex armature, and the bottom cover includes at least one shock dimple that secures at least part of the flex armature to the carrier layer.

Abstract: Disclosed is a device for shielding an electromagnetic wave. The electromagnetic wave shield device comprises a relay having a contact selectively connected to a first terminal or a second terminal of a power receptacle; a controller controlling the connection between the contact of the relay and the first terminal or the connection between the contact of the relay and the second terminal, comparing the first voltage value generated by the connection between the contact of the relay and the first terminal with the second voltage generated by the connection between the contact of the relay and the second terminal, and controlling the relay so that the contact of the relay is connected to the terminal having the lower voltage value; and an electromagnetic wave shielding unit for providing the electromagnetic wave generated by an electric and electronic device to the terminal having the lower voltage value.

Abstract: The invention concerns a switching appliance comprising several main dual cut-out poles provided with fixed contacts housed in an arc box and mobile contacts located on a mobile contact-holder (30). The latter is equipped, for the main contacts, with main housings (31) aligned transversely to the direction (X) of displacement of the contact-holder (30), and, for the auxiliary contacts, secondary housings (32) aligned transversely to the direction (X) and located in front of the main housings (31). The contact-holder comprises between the main housings and the secondary housings a vertical insulating wall (35). The arc box consists of two half boxes (20, 40) assembled in a horizontal plane, so that one of the two halves provides guiding elements and stop elements for the contact-holder (30).

Abstract: A latching magnetic relay assembly comprises a relay motor with a first coil bobbin having a first excitation coil wound therearound and a second coil bobbin having a second excitation coil wound therearound, both said first excitation coil and said second excitation coil being identical, said first excitation coil being electrically insulated from said second excitation coil; an actuator assembly magnetically coupled to both said relay motor, said actuator assembly having a first end and a second end; and one or two groups of contact bridge assemblies, each of said group of contact bridge assemblies comprising a contact bridge and a spring.

Abstract: A magnetoresistive effect element of a tunnel junction type includes a magnetic multi-layered film (1), ferromagnetic film (3) and intervening insulating film (2) such that a current flows between the magnetic multi-layered film and the ferromagnetic film, tunneling through the insulating film. The magnetic multi-layered film includes a first ferromagnetic layer, second ferromagnetic layer and anti-ferromagnetic layer inserted between the first and second ferromagnetic layers.

Abstract: A magnetic transfer method for magnetically transferring information signals such as servo signals from a master medium to a slave medium, capable of reducing a range of signal missing due to insufficient contact of the two mediums originating from an adhering substance, thus enhancing signal quality. When the master medium bearing an information signal and the slave medium are brought into close contact with each other, a transferring magnetic field is applied thereto, thus magnetically transferring the information signal from the master medium to the slave medium. An elastic member made of a material having an elastic property so as to deform in accordance with a surface shape of the slave medium during contact pressure application and to restore to an original surface shape thereof during release of the slave medium from the master medium can be interposed between a back of the slave medium and a pressing surface of a pressing support member.

Abstract: A contact element of a relay, operative for closing and breaking a power supply circuit, respectively, and comprising a contact element (5) for establishing a current path over a pair of connection means (3, 4) in the circuit closing mode, the contact element being received in a socket (10) that is arranged to be movable relative to the relay, and a spring element (22) is operative for holding the contact element in the socket such that the contact element is detachable from the socket against the action of said spring element, in a circuit breaking mode.

Abstract: An electromechanical contactor that houses an electromagnet and a mobile contact carrier within one body. The electromagnet 20 is situated at the rear of the body 10 and a command wiring plane PB is situated at the front of the power wiring plane PA. The command terminals B and the control terminals C are arranged in a forward command/control terminal block 60. The coil terminals 26 are connected to the command terminals B by transverse conductors 27 housed in grooves made between an internal surface of the body and an external surface of an arch-shaped casing.

Abstract: The present invention is for a bi-stable battery switch incorporated preferably for internal use into a remotely switchable storage battery, or, in the alternative, for external use with a battery. A bifurcated contact assembly incorporating dual bus bars is pulse actuated by a solenoid and cam arrangement to engage or disengage across opposing contacts. When engaging the contacts and when associated with high inductive loads, the first bus bar to advance initiates contact and assumes the arcing load, while the second bus bar to advance assumes the current load. When breaking contact and when associated with high inductive loads, the first bus bar to retreat breaks the current load and the second bus bar to retreat breaks the arcing load. Thus, the loads are shared to increase the durability and length of service of the switch.

Abstract: A mechanical latch relay started by a current pulse is disclosed which comprises an electromagnetic generating unit, a connecting mechanism and a mechanical locking mechanism, and which can maintain the existing operation state when the current pulse starting the relay disappears, and it changes its operation state when another current pulse is provided, and then it keeps the operation state even if the pulse disappears so that it can provide a stable operation state of current on/off unnecessary to be provided with a current for a long time, which enables to provide an effective control for current on/off.

Abstract: A hardwired, fail-safe rack protection monitor utilizes electromechanical relays to respond to the detection by condition sensors of abnormal or alarm conditions (such as smoke, temperature, wind or water) that might adversely affect or damage equipment being protected. When the monitor is reset, the monitor is in a detection mode with first and second alarm relay coils energized. If one of the condition sensors detects an abnormal condition, the first alarm relay coil will be de-energized, but the second alarm relay coil will remain energized. This results in both a visual and an audible alarm being activated. If a second alarm condition is detected by another one of the condition sensors while the first condition sensor is still detecting the first alarm condition, both the first alarm relay coil and the second alarm relay coil will be de-energized. With both the first and second alarm relay coils de-energized, both a visual and an audible alarm will be activated.

Abstract: The invention relates to a switching device having a main electromagnetic drive for connecting and disconnecting a moving contact piece to fixed contact elements, and having an auxiliary electromagnetic drive which, in the event of an overload current flowing via the moving contact piece, in the ON state exerts an additional contact pressure of the contact piece on the fixed contact elements. A lever mounted in the moving contact carrier is also is provided to transmit the additional contact pressure.

Abstract: A switching device providing highly-reliable, frictionless, adjustment-free operation is described. Comprised of a comparatively small number of moving parts, the various aspects of the invention offer compact, cost-effective, reliable alternatives to their complex electromagnetic and costly solid-state counterparts. The main parts of the invention rely upon the principles of magnetic attraction and repulsion for the switching of a plurality of electrical contacts contained within the switching device. The flexibility inherent in the design of the invention permits the switching device to be configured in a variety of aspects, including the failsafe and latching designs described herein.

Abstract: A pair of pivoted links positioned at opposite sides of a movable armature and reversely oriented with respect to each other, have a pivotal connection at their opposite ends to a movable contact carrier and intermediate their ends to the armature whereby movement of the armature is amplified in movement of the contact carrier to permit reduction in the air gap between the armature and electromagnet core without incurring a corresponding reduction in contact carrier movement.

Abstract: A matrix relay is formed with a plurality of latching relays arranged in a matrix and mounted on a base of an electrically insulative material. Each of the latching relays comprises an excitation coil, permanent magnet, a pair of first and second fixed contacts, and an armature carrying a pair of first and second movable springs each providing movable contacts. The armature is magnetically coupled to the excitation coil so as to be movable in response to energization of the coil by current of selective polarity between close and open positions of the fixed and movable contacts. A plurality of the armatures of the latching relays arranged in a row of the matrix are assembled into a single armature block to be mounted on the base as a single unit. The armature block comprises a single pair of first and second supporting members made of an electrically conductive material.

Abstract: A three pole relay which operates in response to the flow of normal operating current across fluorescent lamps to activate a coil, the coil coperating a relay to open switches disposed in all of the filament lines associated with the lamp to shut off filament current while maintaining current flow across the lamps themselves.

Abstract: An electromagnetic relay includes a flat base made of an insulating material, two flexure type electromagnetic relay blocks fixed on the base so as to be point symmetrical with the center of the base and having the same structure, a first contact member including two make contacts respectively opposing the movable contacts of the two electromagnetic relay blocks and at least one first terminal inserted into a first through hole formed in a central portion of the base, and a second contact member including two break contacts respectively opposing the movable contacts of the two electromagnetic relay blocks and at least one second terminal inserted into a second through hole formed in a central portion of the base.

Abstract: A miniature switch includes an actuator block operated by a toggle lever, a switch base having fixed contacts arranged on a top side thereof and terminals, which are formed integral with the fixed contacts, arranged on a bottom side thereof, and a movable contactor operatively associated with the actuator block for slidingly contacting mutually adjacent ones of the fixed contacts. The fixed contacts and the terminals are integrally formed. The fixed contacts are implanted in the switch base in first and second rows each of which includes a plurality of the fixed contacts. The first and second rows are arranged on the top side of the switch base symmetrically with respect to a center line and are spaced apart equidistantly. The terminals of the fixed contacts in these first and second rows are arranged to project from the bottom side of the switch base in a substantially linear, single row in which the terminals are mutually spaced apart substantially equidistantly.

Abstract: A safety electromagnetic relay includes two pairs of contact sets, each pair including a load-driving contact set and a control contact set, and each contact set including a fixed contact and a movable contact spring. The two load-driving contact sets are normally-open contacts and may be connected in series and included in an external load circuit which requires safe interruption. The contact springs of each of the first and second pairs are ganged by a coupling member which is movable independently of a relay armature. The ganged pairs of contact springs are actuated by the armature in such a manner that when one of the load-driving contact sets should become welded in the closed condition, the other load-driving contact set will still open when the armature moves to the inoperative position, but the control contact set associated with the welded load-driving contact set is prevented from returning to its condition corresponding to the inoperative position of the armature.

Abstract: Several braids (26) to connect a moving contact (10) to a lug (14) for the current lead are attached to the lug by welding under pressure, the ends (32) of the braids (26) being placed in slots (34, 36, 38) made in the face of the lug (14). The welding occurs without any need of hard solder.

Abstract: In a relay according to this invention the terminal elements (17) are injection-molded into wall members (2,3) which are so designed that they during assembly, and if so required, together with parts of the flange (35) of the coil (16) of the electromagnetic driving system, form a cup-shaped member having a bottom part (4). The rim portion (9) of the cover member (1) which is capable of being placed thereon, projects over the bottom part (4). The thus resulting space may be filled with a sealing compound (casting resin) (13). From this there results a tight relay consisting of a few individual parts only, which is easy to manufacture and which, moreover, is solder- and wash-tight.

Abstract: In a compact electromagnetic miniature relay comprising a contact spring (12) which is firmly clamped at one end, and which bears double contacts (9, 10) arranged on each side, and with the connecting line thereof extending vertically in relation to the longitudinal axis of the contact spring, and which are capable of being moved by an actuator (6) arranged on the armature (5), from stationary break contacts (7) to stationary make contacts (8), with said contact spring (12) being divided by a longitudinal slot (16) partly into two parallel spring legs (19, 20) pretensioned against the break contacts (7), and in which the actuator (6) engages between the clamping point (13) and the free end (11) of the contact spring, the actuator (6), according to the invention, is designed to have at least the same width as the contact spring (12) at the actuating point (17), with the longitudinal slot (16) beginning at a small spacing from the actuating point (17) and extending up to the end (11) of the contact spring (12),

Abstract: A method of forming a relay assemblage essentially consisting of a contact block and a coil block, comprising locating a united connection terminals in the base member of the contact block, cutting the joint uniting the terminals, and coupling the coil block with the contact block by elastic engagement.

Abstract: A relay structure advantageous for compacting purpose is disclosed herein. The relay comprises a generally L-shaped yoke having an upright yoke leg and an upper yoke member extending substantially at a right angle thereto, the upright yoke leg being connected to one end of the core of an energizing coil which extends substantially in parallelism with said upper yoke member. The upper yoke member is formed with a center slot extending longitudinally thereof to be open at both longitudinal ends. A generally L-shaped armature is hingedly supported onto the free end of the upper yoke member with a tab extending across the air gap defined between the free end of the upper yoke member and the opposite end of the core. Extended from the upper end of the tab is an actuator arm which is received in said slot and on which overlies a spring blade carrying at its free end a movable contact.

Abstract: A contact arrangement encompasses at least two stationary and at least two movable contact elements actuatable in common, whereby all contact elements can be connected in series over bridge contact elements which reside opposite one another and which are mutually offset. A multiplication of the contact spacing and an increase of the making and/or breaking capacity of the relay is therefore provided.

Abstract: A miniature DIL relay comprising a motor unit and a casing (1) housing the motor unit (2) and including opposed sidewalls (14, 14a) of insulating plastics material, each sidewall having embedded therein a conductor frame providing external connection terminals (15, 16, 17) of the relay and supporting the fixed and moving relay contacts (8, 11, 6, 7) in the casing, the motor unit having a bobbin with a pair of external connection terminals (18, 21) mounted thereon which project through the casing and which are connected to the motor unit winding.

Abstract: There is provided a method of producing a contact switching device comprising a step of pressing an electrically conductive metal sheet to form a lead frame having at least one relatively resilient contact member extending from one of terminal portions and a stationary contact member extending from the other terminal portion, said relatively resilient contact member and said stationary contact member being disposed in mutually opposed and spaced apart relation, a step of bending external rim portions of said lead frame while said relatively resilient contact member is biased in such a manner that the opposed relatively resilient contact member and stationary contact member are brought together into partially overlapping relation, a molding step for forming an insulating base at base portions of said two terminal members, and a terminal-forming step of cutting said lead frame to leave said two terminal portions.

Abstract: A compact minirelay having a coil, armature and springs housed in a molded housing. Electrical connections for the relay extend through side walls of the housing along the interface between plate parts or between side walls and plate parts. The connections are seated in recesses at the interface and are interlocked with the housing parts which are then bonded together. A snap-on cover is provided.

Abstract: An electromagnetic relay comprising a flat electromagnet, a movable plate member having on a lower surface a plurality of projections and a contact circuit device as stacked up together, said contact circuit device including a plurality of contact switching members each of which consists of a single movable blade and a single stationary contact, said movable blade being biased by the projections in accordance with their movement so as to provide a switching operation in cooperation with the corresponding stationary contact.

Abstract: An electromagnetic relay to be mounted on a printed circuit, which has a small space requirement and is not susceptible to shocks is disclosed. It requires neither screw connections nor adjustment of the contacts as it is assembled and consists of only few components of simple shape.

Abstract: An electromagnet relay is disclosed. The relay comprises at least one electromagnet relay-contact assembly and a housing for containing the electromagnet relay-contact assembly. The electromagnet relay-contact assembly comprises at least one contact block including at least one of a normally-open contact and a normally-closed contact, an electromagnet device including a coil wound on an iron core and a relay armature for actuating the contacts by energization of the coil, and lead-out terminals for the contacts and the coil. The bottom wall of the housing is formed with a downwardly-protruded expansion, and a recess is formed in the inner surface of the bottom wall corresponding to the expansion. The electromagnet relay-contact assembly is contained in the inner space of the housing in such a manner that the lower half of the coil is substantially placed within the recess. The lead-out terminals are extended downwardly through longitudinal flat portions connected with the expansion of the bottom wall.

Abstract: The invention relates to a micro relay intended for use in printed circuits provided with two switching-over contacts. The contacts are arranged in the core of the coil, each of the contacts being provided with its own armature fixed on the switching-over spring, thus no motion transfer elements are needed. The contact space is hermetically sealed so that contact properties similar to those of reed relays are achieved both for the make contacts and for the break contacts.

Abstract: An electrical switch wherein the movable contact is resiliently biassed out of engagement with the fixed contact and is movable into engagement with the fixed contact by a rotatable cam. The cam is rotatable by a manual operating member and there is provided an electromagnetic arrangement for moving the cam in the direction of its rotational axis relative to the moving contact. The cam can be rotated in one direction from a rest position to close the movable contact to the fixed contact and can be rotated in the opposite direction to disengage the movable contact from the fixed contact. The cam is also movable axially by the electromagnetic means without reverse rotation of the operating member so as to permit the movable contact to return to its rest position. The cam carries first and second cam forms each of which is capable upon rotation of the cam, of moving the movable contact to engage its fixed contact.

Abstract: A miniature relay with four connector pins arranged in a row and which, along with a solenoid coil, an armature, and contacts, are supported in a housing consisting of two portions. The housing is of such a size that the base area is approximately one-eighth that of a 16-contact "DIL" socket, and the four connector pins are spaced to mate with four of the "DIL" contacts, thereby to allow a plurality of relays to be accommodated in a single "DIL" socket.

Abstract: A miniature relay having an electromagnet assembly including a coil carried by a magnetic frame member which assembly is supported on a non-magnetic coil support member which in turn is secured to a header containing an arrangement of stationary and movable contacts and terminal pins. The magnetic frame member includes a core extending through and slightly beyond the coil and a pole piece outwardly adjacent the coil. An armature is held in position by the cooperation of spaced-apart holding elements depending from the electromagnet assembly which saddle a recess area in the armature, and a return spring carried by the header continuously urges the armature into saddle defined by the holding elements. The pull-in force of the electromagnet is enhanced by a mating tab and notch configuration of the pole piece and armature or by an end portion of the pole piece disposed to present increased surface area facing the armature.

Abstract: A miniature relay having a large number of contacts is housed in a dual in-line plug compatible with integrated circuitry and the like. A pair of operating coils are disposed upon a central cylindrical core upon which an armature turns, said armature being positioned between the two operating coils. The coils generate a magnetic flux in opposite directions through the core which flux combines in the armature for rotating the armature against a frame in magnetic circuit with the core.