Abstract: An electromagnetic relay includes an armature 1 supported in a central longitudinal bore 12 of a one-part bobbin 2 by means of a bearing which includes a first pair of curved bearing surfaces 1a, 1b, formed on the armature 1 and engaging a second pair of supplementarily curved bearing surfaces 2a, 2b, formed in the bore walls. The first bearing surfaces 1a, 1b may be either cylindrical in which case cylindrical second bearing surfaces 2a, 2b are formed in ribs 2c, 2d projecting inwardly from opposite bore walls, or spherical in which case spherical second bearing surfaces are formed directly in opposite bobbin walls.

Abstract: An electromagnetic relay comprises a bobbin carrying a coil and having a longitudinal central bore through which an armature extends. A permanent magnet is disposed between the central webs of two generally U-shaped yokes, the legs of the yokes having end portions cooperating with end sections of the armature which project from the central bore of the bobbin. The armature is pivotal about a fulcrum formed near its one end, whereas the other end of the armature carries an actuating card for driving a contact spring disposed at the side, and parallel to, the bobbin. The contact spring is fixed at one end to a first contact terminal and has its other end disposed between two fixed contacts connected to second and third contact terminals. The three contact terminals are disposed along a line generally extending parallel to the bobbin. The coil is connected to two or three coil terminals arranged at the other side of the bobbin along a line which also extends generally parallel to the bobbin.

Abstract: The improved relay includes two hollow coil bodies which are in axial alignment on a common base. A beam rotating armature extends through the inside of the coil bodies in the axial direction. A bearing element composed of an insulating material is provided in the central portion of the armature, the bearing element including center contact springs which are embedded parallel to the armature. By means of the bearing element, the armature is embedded by means of neck portions in the base and in a sole plate which connects the two coil bodies. The two ends of the armature form working air gaps with a pair of yokes, the yokes being angularly positioned and being actuated by two permanent magnets which lie above the coil bodies.

Abstract: An electromagnetic relay has a hallow coil body and coil having a longitudinal axis with a bar-shaped armature pivotably mounted for movement in and extending through the coil body, a permanent magnet arrangement having polarization directions perpendicular to the coil axis, two yokes disposed in a single plain parallel to the permanent magnet arrangement, two pole plates connected to the yokes and also extending perpendicular to the coil axis, and a flux plate overlapping and spaced from the yokes and having a flat segment with the magnet arrangement being disposed in the volume defined between the overlapping area of the flux plate and the yokes, the magnet arrangement extending substantially longitudinally parallel to the coil axis. The structural arrangement of the flux plate and yokes so as to define a volume which can accommodate the magnet system permits the magnet system to be encompassed within the relay without adding to the overall length thereof, thereby adapting the relay to miniaturization.

Abstract: In a transfer-type electromagnetic relay comprising first and second lead members (26, 27) for first and second fixed contact studs (31, 32), respectively, and a third lead member (28) for an armature (36), first and second permanent magnets (46, 47) are directed to back surfaces of the first and the second lead members, respectively, with poles of the same name brought nearer to the respective leads. A single permanent magnet may be placed in the above-mentioned manner. Preferably, first and second arm members (43a, 43b) are attached to a leaf spring (37') fixed to the armature and extended from a central portion of the leaf spring on both sides thereof in directions different from each other. The leaf spring is manufactured without any bend and is therefore substantially flat. The third lead member partially comprises a non-magnetic portion at a center area thereof to support the armature.

Abstract: An electromagnetic relay has a bar-shaped armature which is mounted at one end at a coil flange in a carrier comprised of insulating material, in which center contact blades are also mounted at opposite sides of the armature such that movement of the armature is transmitted to the contact blades through the carrier, thus eliminating the plunger which is normally present for contact actuation. The offset positioning of the contact blades with respect to the armature in the carrier causes friction which substantially prevents damaging impact of the contact pads of the contact blades with respectively mating stationary contact pads.

Abstract: A relay has a bar-shaped armature which is seated at a location of one coil end over an armature carrier comprised of insulating material. For the purpose of seating, taut bands projecting in a direction of the rotational axis of the armature are integrated on the armature carrier, said taut bands forming suspension heads at their free ends. The armature carrier is engagably secured over said suspension heads between fork-shaped ends of retaining arms integrated on the coil body. Given movement of the armature, the taut bands are twisted so that a friction-free armature bearing is created.

Abstract: A polarized electromagnetic relay has a switching armature inside the bobbin and mounted for movement with the armature free end extending between oppositely arranged contacts defining electrical and magnetic poles, the armature being coupled to a magnet inside the bobbin with the coil core connected to the bobbin formed of a ferromagnetic material and defining a pair of facing opposite magnetic poles constituting the opposite contacts.

Abstract: At least one coil partly surrounds a magnetic circuit consisting of a fixed yoke and a movable armature, the armature being constituted by a permanent magnet having pole faces adapted to carry pole-pieces which project on each side of the axis of magnetization. The electromagnet comprises a second permanent magnet interposed within the fixed yoke with a polarity such that the armature is urged towards the end or so-called rest position when the coil is not energized.

Abstract: A polarized electromagnetic device is disclosed having a generally I-shaped magnetic core member, a coil which is wound on the center portion of the core member, a pair of permanent magnets which are arranged in parallel with and outside of the respective end portions of the core member, and mutually confronting first and second armature plate members which are joined together through the pair of permanent magnets, with each magnet at the opposite end portions of the armature plate members in order to provide a spacing for accommodating the core member between the armature plate members, and consequently leaving a gap for relative movement therein. The core member and armature plate members are supported to be swingable relative to each other for movement about a center transverse axis of the center portion of the core member.

Abstract: A polarized electromagnetic relay has a coil core body comprised of insulating material having a ferromagnetic movable contact element disposed in a hollow interior thereof, the movable contact element having a free end movable between two pole plates which are mounted in a flange of said coil body and which enclose a permanent magnet in a chamber of the coil body. The movable contact element is secured at its opposite end to a carrier which forms a ferromagnetic flux guidance plate extending substantially through the entire interior of the coil which is wound about the coil body and which terminates in close proximity to the pole plates.

Abstract: An electromagnetic relay having a switching sensitivity alterable under the influence of an external magnetic field. The relay comprises a coil form made from an insulating material. A plurality of pole-shoes, also acting as relay contacts, are mounted in the coil form. A plurality of ferromagnetic inlays which exhibit magnetic lines of force are mounted in the coil form so that each one of the inlays is associated with a corresponding one of the pole-shoes. When the inlays are mounted, the magnetic lines of force exhibited by these inlays are not perpendicular to the corresponding pole-shoes. A magnetic insulating region is formed by the coil form for partially insulating the pole-shoes from the lines of magnetic force exhibited by the corresponding inlay. The relay contains a substantially flat ferromagnetic armature which is switched into one of two positions in response to an excitation coil which is sensitive to an electrical current.

Abstract: A polarized miniature relay where the armature and the armature activated electrical contacts are positioned interior of the coil winding with the contacts injection molded in contact carriers and the contact carriers and armature preassemblable onto a bar magnet forming a single unit inserted into the coil interior.

Abstract: A miniature electromagnetic relay is disclosed having a two-piece coil supporting body, one piece of which constitutes a main body portion defining an internal switching space containing a moving armature and associated components together with contact switching members. Guide channels are provided in the main body portion allowing insertion of the switching components from a direction normal to the plane of movement of the armature. A second body portion closes the switching space. Various configurations are illustrated.

Abstract: An electro-magnet comprising a stationary system having a coil, a core and tationary flux-conductive yokes and with one part movable in longitudinal translation, comprising one permanent magnet whose magentizing axis is perpendicular to the moving direction of said movable part and two flux-conductive armatures secured to each pole face of said magnet in perpendicular relationship to said magnetizing axis, one of said flux-conductive armatures is so bent and/or shaped as to define, two air-gap regions arranged on either side of said magnetizing axis, whereas two yoke ends parallel to said magnetizing axis are placed in said air-gap regions.

Abstract: An electrical clock is provided in which pulses of a 10% duty cycle are repeatedly applied at a one second rate to a solenoid which attracts an armature attached to a reciprocating ratchet once every second, the reciprocating ratchet being returned to a neutral position between each pulse. The reciprocating ratchet drives a toothed wheel which is located on a main axis of the clock frame view suitable pawls. The second hand of the clock is directly coupled by a second hand shaft to the toothed wheel. The toothed wheel, by means of a pinion, drives an intermediate gear which is located outbound from the main axis. The intermediate gear drives a minute gear, the minute gear being mounted on a minute tube concentric with the second hand shaft. The minute hand is directly affixed to the minute hand tube. The minute gear, by means of a pinion, drives an outbound motion gear, the motion gear in turn driving an hour gear coupled to an hour tube whose axis is concentric with the second shaft and the minute tube.

Abstract: A fault detection indicator comprises an electromagnetic core and coil assembly, a repulsion permanent magnet and two trip-latch permanent magnets. In addition, an indicator button may be employed to present the state of the indicator. The indicator design presents a simple construction which will electrically change its indicated state, remain in latched position and be capable of being manually restored. Internal switches may be included in the indicator which function in conjunction with the trip-latch magnets.

Abstract: An electromagnetic device made of flat components, which requires no resetting spring for the armature which is high in efficiency and small in size. The device comprises first and second yokes in contact respectively with magnetic pole surfaces of a permanent magnet and presenting pole faces opposed to each other. A pivoted armature, swingable between the pole faces on first and second yokes, by reason of the permanent magnetism, normally engages the pole face on the second yoke. A coil is wound around the armature, with current in the coil serving to overcome the permanent magnetism so that the armature moves to the opposite position against the pole face on the yoke. The device can be of latch type or single stable type by making the armature or either one of the yokes of a semihard magnetic material which is low in coercive force and high in residual magnetic flux density.

Abstract: The relay as disclosed has a pivotable armature with self-balancing action and electromagnetic action, which produces uniformly directed position changing action.