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: An electric starter solenoid for starting internal combustion engines includes a housing having a lower coil section and an outer rectangular contact section. The coil section has a hexagonal cross-section and a depth to receive an annular coil unit. An armature is journaled in the coil unit. A contact guide with spaced terminals to the opposite ends in the upper section. A floating contact plate is resiliently mounted on a guide pin and guided in the rectangular section. The guide pin engages the armature. A light spring urges the guide pin against the armature in spaced relation to the terminals. The coil unit includes a bottom plate with opposite projection mating with corners of the housing to angularly orient the coil unit in the housing. In one unit, a common coil lead is connected to the bottom plate.

Abstract: A pair of springs (14, 22) provide counteracting rotational bias to a movable contact arm (8) pivotally supported on a latched lever (10). A handle (4) is manually operable for reducing the force applied by one spring (22) to effect contact (6a, 8b) opening as a result of force applied by the other spring (14). Current sensing means (28, 34, 28a) are operable to release the latched lever (10) for releasing the pivot point (12) of the movable contact arm (8) whereby both springs (14, 22) work in a common direction to rapidly separate the contacts (6a, 8b). Arc gases are exhausted in the direction of separating movement of the movable contact arm (8) to utilize forces associated with arc gas pressure in a cummulative manner with the forces provided by springs (14, 22) to further increase the contact separation speed.

Abstract: A rotary actuator for a microwave switch, including, a stationary armature formed by a core positioned along a particular axis and with a coil wound around the core to form at least one electromagnet and with the polarity at the end of the core in accordance with the direction of current flow through the coil upon the application of electrical energy to the coil, a rotor positioned adjacent to one end of the core and with the rotor supported for rotation in a plane perpendicular to the particular axis of the core, the rotor including a plurality of spaced permanent magnets located axially relative to the one end of the core and with the application of electrical energy to the coil providing axial excitation to produce magnetic interaction between the permanent magnets and the core and provide rotary travel of the rotor in one of two opposite directions in accordance with the direction of current flow through the coil, and a stop located in the path of rotation of the rotor to engage a portion of the rotor to

Abstract: In an M.B.B. type relay, a contact spring comprises a pair of flat spring parts integral at the base of the spring and separate at their free ends, each of which cooperates with a fixed contact. An actuating card drives both spring parts in the same direction and has a stepped portion so dimensioned that a first contact formed by one of the spring parts with one of the fixed contacts is closed before the second contact formed by the other spring part with the other fixed contact is opened.

Abstract: An overcurrent protection switch having one or more thermal and/or magnetic trips (14,21) and a mechanical switch latch which essentially consists of an actuating element and a latching lever (6) which acts in conjunction with the former and which with its first end acts upon a plunger (8) which is guided in the longitudinal direction of the housing (69) under an initial spring tension and which drives the switching contacts, and which latching lever rests with its other end in the latching position under an initial spring tension on a support area (13) of a trip lever (9), wherein, for improving the switching-off characteristics and the handling characteristics of the switch, the trip lever (9) is constructed as an essentially L-shaped angle lever which in the area of its angle is rotationally supported on a shaft (75) which is stationary with respect to the housing, which lever is subjected to an initial spring tension with respect to the thermal and/or magnetic trip (14,21) and which engages with the swive

Abstract: A circuit breaker of the present invention provides a movable contact held by a movable contactor to be capable of passing through the interior of an arc suppressing means and to be contacted with a fixed contact from the side of the arc suppressing means. Thus, an arc generated upon an opening of the both contacts is made to shift immediately into the arc suppressing means, whereby arc dividing, cooling and suppressing are performed rapidly and the current limiting effect of the breaker is remarkably elevated.

Abstract: A fully automated residential-type circuit breaker assembly is made possible by the provision of retaining slots and guide channels formed within the breaker case. The breaker case then serves as an assembly fixture for specially designed armatures and magnets used within the trip section of the breaker as well as for a special designed bi-metallic trip element. A high calibration yield is accomplished by means of a low friction latch assembly.

Abstract: A contactor assembly is disclosed comprising a case having a plurality of serially and vertically sectioned pole chambers, each provided with a traveling contact and a pair of operation frames. A traveling contact bar having right and left arm portion is pivotally fixed on a support frame. The operation frames are installed at right and left positions of the traveling contact, and each frame is provided with a window and a leg portion extending from a lower surface of the frame. A pair of upper and lower contact springs are provided in the window, and the adjacent arm portion of the traveling contact extends through the window and is sandwiched by the pair of contact springs. The pair of right and left operation frames are interlockingly connected at the lower ends of both the legs. An electromagnet is connected to each leg and a return spring is provided on the lower surface of the frame.

Abstract: A contactor capable of having a very high breaking power comprises a movable contact carrier bridge (3) having a central part in the form of a blade (3c) and conducting J-shaped pieces (2a-2b) supporting fixed contacts. A non-magnetic blade bent in the form of a U is mounted slidable inside a hollow movable insulating contact holder (1) and guides and holds at its upper end a magnetic plate (8) cooperating with said blade (3c) and forming an air-gap with another U-shaped magnetic piece (6), disposed between the legs of the bent blade (5) and integral (at 7) with the contact holder (1). A contact pressure spring (4) bears on the basis of the U-shaped magnetic piece (6) and on the bottom of the bent blade (5).

Abstract: A so-called blow-off type current limiting circuit breaker includes a stationary contact strap that is divided into three elongated closely spaced coplanar parallel arms that are connected to each other at one end of the strap. The stationary contact is mounted to the interior one of the parallel arms at the end thereof remote from the one end of the strap. A terminal portion of the strap connects exterior ones of the parallel arms to one another at the ends thereof remote from the one end of the strap. A movable contact engageable with and disengageable from the stationary contact is mounted to one end of a movable contact arm that is pivoted at its opposite end in the region of the one end of the strap, extending parallel to the arms of the strap and being aligned with the interior arm. Current in the interior arm flows in a direction opposite to the direction of current flow in the exterior arms and the movable contact arm.

Abstract: A momentary contact magnetic snap action electrical switch (10) having a magnetic cover plate (12) with an aperture (14, 16) therein, a flexible sheet magnet (18) positioned in back of the cover plate (12) in a normal position magnetically attracted to the cover plate (12) and movable to an actuated position away from the cover plate (12) by manual actuation through the aperture (14, 16), and contacts (24, 34, 26, 36) positioned in cooperation with the flexible sheet magnet (18) for providing a change in electrical continuity when the flexible sheet magnet (18) is moved between the normal position and the actuated position.

Abstract: An electromagnetic relay has a tongue armature disposed inside a hollow coil body substantially along the coil axis, the tongue armature having a free end movable between two cooperating pole plates and a fixed end secured to a carrier disposed in a recess in a flange of the coil body substantially perpendicular to the coil axis. The carrier includes a pair of adjustment plates which are connected by means of torsion stays to fastening tabs, the carrier being connected to the coil body at the fastening tabs. Adjustment of the tongue armature is undertaken after assembly of the relay by the application of an external magnetic field to the adjustment plates, the displacement of which permanently deforms the torsion stays so as to suitably position the tongue armature.

Abstract: A polarized electromagnetic relay of this invention comprises a yoke providing air gaps at four diagonal positions and an H-shaped armature block having four pole contacting portions positioned in the air gaps of the yoke. This yoke comprises two yoke units, each of which is formed with a substantially U-shaped first magnetic member and a permanent magnet installed at one of its poles to the middle on the lower side of the first magnetic member, and a second magnetic member contacted with the other pole of the permanent magnet and providing air gaps between its both ends and the free ends of the first magnetic member.

Abstract: In an electromagnetic relay, a bridge contact arrangement whereby cooperating contact elements are disposed in one common plane lying next to one another. One of the cooperating contact elements angularly cantilevers over the free end of the other, shorter cooperating contact element with a cross-leg. In this manner the contact element can be provided with contact pieces aligned and properly spaced with one another. An armature-carried contact bridge spring serves to engage the contact pieces of the contact elements with equal contact pressure. The invention construction offers a simplified, reliable relay manufacture.

Abstract: A circuit breaker is disclosed wherein two breakers are arranged in mirror image relation having their respective contacts facing each other and abutting alternately either a common contact carrier of U-shaped configurations while double contact is prevented mechanically. In an alternative version the stationary contacts are arranged for an axial operation change. The arrangement permits reduction in internal connections as well as in space requirement without loss in function as compared with known multiple circuit breaker units.

Abstract: Reversing contactor with mechanical locking. The casing (2) of the device includes a half-casing (3) to which are coupled two identical covers (70, 71), each of which closes one of two housings (9, 10), each of which receives the fixed and movable pieces of an electromagnet and the corresponding sets of contacts (49, 50). Such a contactor, which lends itself especially well to compact production, is used to change the direction of a motor with every guarantee of safety.

Abstract: An interlock assembly for a high amperage molded case circuit breaker is provided with a slide biased to interfere with movement of a push to close link whose operation enables discharge of the breaker closing spring. The slide is operated by the toggle assembly in the event the contacts are open to permit operation of the link except if the breaker is being tripped or held tripped. A trip solenoid of the permanent magnet type is reset, when tripped, by a reset spring under control of blade carrier which has excess energy available.

Abstract: The disclosed electromagnetic contactor has a base including a lateral opening and an internal space, and two rails disposed at the bottom of the internal space. A U-shaped stationary iron core including two guides on both sides is assembled into a coil holder so that one leg of the "U" is surrounded by an operating coil held by the coil holder. Then the coil holder is inserted into the internal space in the base through the lateral opening with the guides engaging the rails until it is removably positioned in the internal space.

Abstract: A vacuum contactor kickout spring adjustment apparatus providing for the controllable increase or decrease in the force of the kickout spring. The apparatus permits the insertion or removal of the kickout spring at a force substantially less than the normal operating force of the spring. The apparatus includes a base having a U-shaped bracket mounted thereto. Rotatively mounted intermediate the legs of the bracket is a locking block. A lever pivotally mounted on the base engages one end of the kickout spring. A rod engages the locking block and lever such that movement in one direction moves the lever to increase the force and the spring while the movement of the rod in the opposite direction accuses a decrease in the force of the spring.