Abstract: A miniature relay switches a very large current without causing a deterioration of nearby insulation. This is done by providing relatively large clearance spaces in the areas where particles eroding from the contacts might be deposited. Also, housing walls separate the contacts from these areas of particle deposition. Without this clearance space or walls, the deposited particles might cause a short circuit. The invention also provides many structural details which enables the miniature construction.

Abstract: An electromagnetic relay includes a moving block assembly which is selectively attracted by the energization of the electromagnet in the relay and moves in a direction perpendicular to the axis of an iron core within the electromagnet, thus actuating a movable contact support. The moving block and the movable contact support slide together, thus preventing wobbling of the movable block assembly within the relay.

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: The present disclosure refers to a miniature relay with a spring bracket serving for mounting a magnet coil and spring contact bank. The base of the spring bracket is provided with plug or solder connections towards the outside, with a view to providing the most compact construction possible with a simultaneous, far-reaching separation of plug or solder connections for the coil winding and a contact bank. It is also within the context of the present invention that the longitudinal axis of the magnet coil is arranged perpendicularly to the longitudinal axis of the spring contact bank.

Abstract: An electromagnetic relay comprises an excitation coil for actuating relay contacts through the operation of a card coupled to an armature of the coil. The relay has at least one double-throw switch in which a pair of first and second movable contact members are driven to move with respect to a fixed or common contact member disposed therebetween for closing and opening contact operations in cooperation with the fixed contact. All these contact members are mounted on a contact base such that the fixed contact member is arranged between the first and second contact members. Also mounted on the contact base is at least one set of common, first, and second terminal lugs which are connected respectively to the fixed, first and second contact members to project downwardly from the base.

Abstract: An electromagnetic relay for use in a high-frequency circuit includes an armature 3 mounted on a central shaft 16 for pivotal movement between two switching positions. A total of four actuator cards 5 are disposed on two opposite sides of the armature 3, each card carrying a contact spring 8. Each contact spring serves to bridge a pair of fixed contacts 6, 7. The contact springs and fixed contacts are located in shield casings 9 disposed on both sides of the armature 3. Return springs 19 urge the cards 5 into abutment with the respective sides of the armature 3. Sufficient electrical separation as required for high-frequency applications is achieved between the two contact systems due to the intermediate disposition of the armature 3. The provision of an individual actuator card 5 for each contact spring 8 permits independent adjustment of each contact.

Abstract: A miniature electromagnetic relay having a magnetic block and at least two sets of stationary electrical contacts. A moveable contact arm having a mounting end positioned in a base and two contact carrying portions extending from the mounting end. The improvement including a center tab portion on the moveable contact arm extending from the mounting end, between the extending contact carrying portions, and at a distance less than said contact carrying portions. The switching of the moveable arm from one set of electrical contacts to the opposite set being caused by the controlled energization of the magnetic block, which engages the tab of the moveable arm, causing closure of both contact carrying portions with the stationary electrical contacts at a lower electromagnetic force requirement and causing a more consistent relay operation.

Abstract: The electromagnetic switch apparatus is housed in a two-partite casing. A partition wall inserted into the casing separates the switching magnet chamber from the switch- and connection contact chamber. The partition wall comprises a plurality of extensions which are stepped at least twice and extend into the switch- and connection contact chamber. The portions of the extensions located below the connection contact members cover in an electrically insulating manner the lower areas of the switch- and connection contact members. The upper narrow portions of the extensions extend up to in front of the connection contact members and form a protection against an accidental contact.

Abstract: Sealed relays often contain organic matter which reduce the conductivity of the electrical contacts. The invention is a sealed relay with a catalytic metal (Pd, Pt, Ni, Rh, Ir, Co, Fe, Os and Ru) on a rubbing surface which polymerizes the organic matter into a solid polymer that does not interfere with the electrical contacts.

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: A miniature low profile relay having discrete bobbin and stationary contact block sections mechanically affixed together. A closed-loop pusher member having a window portion is interposed between the bobbin and stationary contact block sections. A tongue portion of the stationary contact block section extends through the window of the pusher for being received in force-fit within a recess portion of the bobbin section. An E-core having a center arm which extends through the bobbin section with a protruding end portion and having two outer arms having end portions, with each end portion being received in a slot of the contact block section.

Abstract: A flat electromagnetic relay which includes a base member having at least two projections extending from a flat surface thereof. At least one hole (or indent), fitting a pertinent one of the projections, is formed in each supporting block that holds a contact, yoke, a hinging spring, or the like. These and similar members are successively stacked on the surface of the base member, with the projections fitted through the holes in the supporting blocks. The free ends of the respective projections are then deformed to secure and hold the components in position. A contact actuating card is put in place after the stack of contact holding blocks is assembled and locked in position. The block through which a contact carrying leaf spring is molded preferably has an end surface formed at an angle such that a portion of the leaf spring may be subsequently bent to extend substantially perpendicular to the remainder of the leaf spring, thereby forming a solder terminal.

Abstract: An electrical relay construction in which the function of the actuating magnetic field of operating the relay is separated completely from the function of providing contact closure force. A pair of electrically conductive, spherical bodies (18, 19) are rollably clamped by spring means (28) between a common, electrically conductive plate (20) and individual platforms (14, 15, 16) connected to the relay terminals (11, 12, 13). The common plate (20) is mounted on an actuating member (21) controlled by a solenoid (31) to roll the bodies (18, 19) between the common plate (20) and the terminal platforms (14, 15, 16) to complete the possible relay conducting paths.

Abstract: A small-sized power relay for automatic control of an air conditioner in response to the signal from an electronic thermostat. This relay, being operative in response to an ultra low current from the electronic thermostat, is instrumental in switching on and off the large current used in air-conditioning. Further, the manufacturing cost is substantially reduced.

Abstract: Electromagnetic relay comprising resilient U-shaped tongues having each a pair of arms resiliently engaging fixed contact studs for electrically interconnecting them, and a movable control member adapted to move one of the arms of each tongue away from the corresponding contact stud, for breaking the electric connection. This relay further comprises a second control member movable in a direction opposite to that of the first control member and adapted to co-operate with the first control member for clamping the U-shaped tongue and move the two arms thereof away from the relevant contact studs.

Abstract: A low profile relay having both coil and spring pile-up mounted in the same plane on its E-core. The E-core has two extended outer arms upon which the spring pile-up is mounted and a shorter center arm upon which the coil and bobbin assembly is mounted and which also forms the strike area for the armature. A C-shaped adjustable armature spring has brackets on each end of the arms into which the armature is snap fitted, providing an adjustable and detachable armature and spring assembly. A dust cover is mounted over the assembly with a hole above the coil to provide heat dissipation for the relay. The relay assembly is mounted on a nonmetallic friction fit bottom insulator for mounting on printed wiring cards.

Abstract: A magnetic relay having a core, coil, an armature with a pair of dielectric cards, a plurality of pairs of contact points and a contact spring, has been found. One of said dielectric cards pushes or releases the contact spring according to the electric current flowing in said coil and said pairs of contact points are closed or opened. The structure of the present relay is so simple that mass production and improvement of accuracy of the relay can be easily accomplished.

Abstract: An improved relay includes a bobbin or spool having dual flanges at each end which include slots for receipt of one leg of an L-shaped armature and core piece. The coil and bobbin assembly including the armature are mounted in a housing on contact pins molded in the base of the housing. An integral armature spring and moving blade contact is also mounted in the housing attached to the armature. One leg of the armature extends along the outside length of the coil and cooperates with a core piece within the spool to complete a magnetic circuit. Upon movement of the armature, the connected moving blade contact provides a wiping action of the movable contact against stationary contact pins thereby effecting efficient making and breaking of a circuit.

Abstract: A flat type electromagnetic relay wherein respective members forming normally closed contacts and normally opened contacts and actuating such contacts are stacked on one another to substantially enclose electromagnet assembly of which core and coil frame are integrally formed to be flat. A balance spring urges a card operatively coupled to an armature of the assembly into non-attracted position of the armature for normal positions of the contacts with a balanced constant force with reference to attracting force to the armature and resilient force of normally opened contact spring. The assembly includes means for positioning the respective members when assembled with a single assembling direction.

Abstract: A switching device includes a combination of a fixed contact, first and second electrically connected movable contacts, and an arrangement for moving the movable contacts so that the first movable contact closes to the fixed contact before the second movable contact closes to the fixed contact and so that the first movable contact opens from the fixed contact after the second movable contact opens therefrom.