Abstract: An electromagnetic relay is provided which is small in size and is capable of controlling two circuits of an ordinarily-open contact, which has a large current-carrying capacity and high interrupting capability, and which is excellent in resistance against shock and vibration. Movable contactors are held, through bow-shaped movable contactor springs, to two -shaped holding frames each being electrically separated and being mechanically connected via a card made of a highly heat-resistant resin in a card block. Thick-plate shaped movable contacts, which are attached to the movable contactors in a fixed manner, are electrically connected or disconnected to fixed contacts in a base block, in synchronization with operations of an armature of an electro-magnet block. In order to improve a current-carrying capability and interrupting capability, there are provided two pieces of ordinarily-open contacts which are connected in series to each other, and between which an interval is doubled, in each of two circuits.

Abstract: The invention relates to a switching device with a switching structure (1), which includes a cage assembly (21) having two opposite first sidewalls (5) and a bottom wall (6) integrally connecting the first sidewalls. The cage assembly (21) is at least partly configured as a cage (24) in which a slide (4) is displaceably arranged. A moving contact bridge (3) associated with stationary contact members is held in an opening (15) of the slide (4) under the pressure of a contact pressure spring (2). A clearance (26) is provided between the two first sidewalls (5) for the displacement of the contact bridge (3). A limit stop (18) is provided to retain the slide (4). Arcing chambers (7) formed by insulating second sidewalls (23) form part of the switching structure (1).

Abstract: An electrical busbar arrangement has provision for connecting a single feeder cable to a plurality of branch cables within an insulating housing. A branch port is provided for each branch cable, and a spring-loaded slidable support plate is arranged to receive the branch cable and to retain it in an aperture thereof. The support plate moves within a cable holder that is driven by a rotatable cam by means of a switch. Operation of the switch between OFF and ON positions is effective to move the branch cable into and out off contact respectively with the busbar. The switches of each port are selectively operable independently of each other. In this way, branch cables may be independently and selectively mounted in the housing and brought into electrical connection with and disconnected from the busbar.

Abstract: Apparatus and methods for lockout of toggle switches, such as those toggle switches that include a captivating switch head (e.g., an enlarged and/or offset switch head) disposed on a cylindrical-shaped switch arm of the toggle switch. In one example, the apparatus and methods may employ a securement housing configured to be secured to a toggle switch by capturing at least a portion of the switch arm of the toggle switch between a switch head and an adjacent surface in a manner that prevents movement of the switch arm from a first switch position (e.g., “off” position) to a second switch position (e.g., “on” position).

Abstract: A structure of a flexible element has a force-receiving portion and a fixing portion, wherein the force-receiving portion is extended to have two arms for connecting with the fixing portion, so as to form two bending portions therebetween, characterized in that an inner end point is defined inside the fixing portion and the inner edges of the fixing portion are extended from the inner edges of the bending portion and intersected at the inner end point, so that a force-distributing section is defined between the bending portion and the inner end point, for distributing the torque applied on the bending portion, so as to eliminate the problem of too much concentrated stress.

Abstract: An apparatus includes an electrical device and a latching micromagnetic switch that controls energy flow through the electrical device. The latching micromagnetic switch includes a cantilever, a permanent magnet, and a coil configured to latch the latching micromagnetic switch in one of two positions each time energy passes through the coil. The electrical device and the latching micromagnetic switch can be integrated on a same substrate. Otherwise, the electrical device and the latching micromagnetic switch can be located on separate substrates and coupled together. The electrical device can be a circuit, a filter, an antenna, a transceiver, or the like.

Abstract: A detector circuit to be used for measuring current and including a main current transformer and two substantially identical auxiliary current transformers, where magnetomotive forces are induced by a main current, said magnetomotive forces being counteracted by magnetomotive forces induced by a compensating current (i4) in a compensating winding (L4) across at least two annular cores (2, 3) at the same time as the two auxiliary current transformers are magnetized in antiphase by means of a modulation signal, said circuit further including a synchronous rectifier for providing an adjustment signal for the compensating current (i4). According to the invention, the compensating winding (L4) is formed by a so-called “pilgrim winding”.

Abstract: A switching gas damper is for low voltage power switches, especially for low voltage power switches which can be inserted into low voltage switching installations. The switching gas damper is arranged above an arc extinguisher of the low voltage power switches and includes at least one inlet for switching gases and at least one outlet for damped deionised switching gases. The switching gas damper is provided with a carrier element which can be arranged directly adjacent to the arc extinguisher and can be fixed to a housing receiving the low voltage power switch. The carrier element forms at least one receiving chamber for a flow element creating a flow resistance for the switching gases, and the at least one receiving chamber can be closed by at least one closing element fixing the at least one flow element. The carrier element forms the at least one inlet and the at least one closing element forms the at least one outlet.

Abstract: A push-on switch includes a movable contact which has a projecting segment permanently connected with an outer contact and which is accommodated in a recess of a switch enclosure. A sheet with a center through hole for the movable contact is placed on the switch enclosure. The push-on switch also includes a metal cover with a cover terminal. The metal cover is attached to the switch enclosure such that a pressing segment faces a disc segment of the movable contact corresponding to the position of the center through hole with a predetermined vertical gap between the pressing segment and the disc segment. When a very low and weak force is applied on the pressing segment, the pressing segment comes into contact with the disc segment to change the state of a first-stage switch.

Abstract: An auxiliary switch sub-assembly is provided for a telecommunication system circuit breaker including a housing having an opening, separable contacts inside the housing, and an operating mechanism operating the separable contacts between open and closed positions. The operating mechanism comprises an operating handle operable among a first position corresponding to the separable contacts being open and a second position corresponding to the separable contacts being closed. The operating handle has a first end protruding from the opening of the housing, and a second end. The auxiliary switch sub-assembly includes an auxiliary switch including an actuator, and a mount attaching the auxiliary switch to the operating mechanism of the circuit breaker within the housing thereof. The actuator is mechanically actuated by a portion of the second end of the operating handle. An electrical switching apparatus employing an auxiliary switch sub-assembly is also disclosed.

Abstract: The rotating type variable resistor includes a housing; a rotating member disposed to be rotatable in the housing; a ring-shaped support member having a conductive pattern at one surface of the support member and disposed at any one side between the housing and the rotating member; and a sliding member disposed at the other side between the housing and the rotating member, and capable of sliding relative to the conductive pattern, wherein the conductive pattern is composed of a high resistor unit containing carbon and a low resistor unit having a specific resistance lower than that of the high resistor unit, and the high resistor unit and the low resistor unit are alternately and repeatedly formed along a direction where the conductive pattern and the sliding member slide.

Abstract: A method for manufacturing magnet armatures which are used mainly in brake-pressure modulators of electronically controlled brake systems and which are provided on their entire surface with a plastic coating, for reasons of dimensional stability and sliding properties. Magnet armatures of this type are constructed as cylindrical members and are usually provided in the region of one of the two end faces with an elastomeric sealing element, which according to the prior art is bonded to the magnet armature by vulcanization, an adhesive elastomer-to-metal bond being formed between the magnet armature and the elastomeric sealing element during vulcanization. Since bonds of this type are not possible for a completely coated magnet armature, the elastomer for the elastomeric sealing element is, according to the invention, vulcanized onto the armature without using an adhesion promoter.

Abstract: An electrical assembly for use in various operating environments such as a casing of a combustion turbine 10 is provided. The assembly may include an electrical energy-harvesting device 51 disposed in a component within the casing of the turbine to convert a form of energy present within the casing to electrical energy. The harvesting device is configured to generate sufficient electrical power for powering one or more electrical devices therein without assistance from an external power source. One example of electrical devices wholly powered by the energy harvesting device may be a sensor 50 connected for sensing a condition of the component within the casing during operation of the combustion turbine. Another example of electrical devices wholly powered by the energy harvesting device may be a transmitter in communication with the sensor for wirelessly transmitting the data signal outside the casing.

Abstract: A chip variable resistor which is capable of keeping the resistance at an adjusted value and can be manufactured easily is provided. An insulating substrate is formed with a through-hole capable of receiving a driver, and the upper surface of the insulating substrate is formed with a resistor film surrounding the through-hole. A rotor in the form of a circular plate overlaps the resistor film via a spacer made of an insulating material. The rotor is pressed and held from the outside by a holder made of a metal plate. The spacer is partially cut away so that a contact portion of the rotor is exposed downward for coming into contact with the resistor film. Since the holder surrounds the rotor from the outside, the resilient force of the holder can strongly act on the rotor. Therefore, the resistance can be reliably kept at the adjusted value.

Abstract: A buffer assembly includes a housing adapted to sealingly connected to the pressure switch and defining therein a chamber and an airway defined in a bottom face of the housing to communicate with an interior of the housing so as to communicate with an inlet of the pressure switch. Pressure change inside the inflatable product is transmitted to the pressure switch only after the pressure change passes through the chamber of the housing via the airway and the inlet of the pressure switch.

Abstract: The invention relates to an overheat detection sensor. The inventive sensor is characterised in that it comprises a conductive core which extends inside a first conductive sheath, said core and first sheath being separated by a material having a positive or negative temperature coefficient The detector also comprises a wire which is made from a material having a positive or negative temperature coefficient. Said wire extends around the first sheath and is separated from same by means of an insulating material. The central core, the first sheath and the wire are all connected to connection means.

Abstract: The present invention provides a permanent magnet, comprising a cylinder formed with a permanent magnetic material. The cylinder comprises along a radial direction, a magnetic core and a magnetic sheath that are coaxial. The magnetic core is assembled in the magnetic sheath. The magnetization direction of the magnetic core is axial direction, and the magnetization direction of the magnetic sheath changes step by step from a direction which is parallel to the magnetization direction of the magnetic core in one end to a direction which is orthogonal to the magnetization direction of the magnetic core in the other end, along the axial direction of the cylinder. Moreover, a magnetic device for use in MRI using the magnet and manufacturing methods for the permanent magnet and the magnetic device are also provided in the present invention. With the permanent magnet, magnetization strength in the working area generated by the magnetic device for use in MRI can amount to more than 0.5-0.6 T.

Abstract: An external operating handle mechanism for a mold cased circuit breaker comprising: an external operating handle; a pinion gear coupled to the external operating handle to be rotatable in response to a rotation of the external operating handle; a movable member provided with a rack gear portion coupled to the pinion gear to be linearly movable according to the rotation of the pinion gear, and provided with a handle connecting portion connected to the handle of the mold cased circuit breaker to linearly move the handle of the mold cased circuit breaker; and a guide member for guiding the movable member to linearly move, by which it is easy to control a stroke required for a displacement of the handle of the mold cased circuit breaker and the displacement of the external operating handle according to the stroke, and it is possible to accurately and efficiently transfer power upon performing a reset operation.

Abstract: A swing switch, which is disposed in a decorative panel having a surface and an opening, includes a switch body, and a panel-side guide. The switch body has an input element, a switch-side guide, and a swing center. The input element is disposed in the opening of the decorative panel. At least part of the switch-side guide is disposed on the rear side of the input element. The swing center is disposed substantially flush with the input element or the surface of the decorative panel. The switch body swings about the swing center. At least part of the panel-side guide is disposed on the rear side of the input element of the switch body. The switch-side guide of the switch body slides on the panel-side guide, thereby swinging the switch body. The switch-side guide and the panel-side guide support the switch body in a cantilevered manner.

Abstract: A sealed two-plate swimming pool touchpad construction that is unaffected by pressure, in which a resilient, compressible, non-conductive spacer material such as rubber tubing is seated in an array of spaced recesses or grooves on the inside face of the rear plate to insulatively space a conductive, flexible front plate from the rear plate. The front plate is joined and sealed in watertight fashion to the rear plate around the array of grooves and spacer material. Conductive portions of the inside face of the front plate are flexed into switch-closing/signaling contact with conductive portions of the inside face of the rear plate between the spacer material when a swimmer makes contact with the front plate.