A method of fabricating and packaging an ohmic micro-electro-mechanical system (MEMS) switch device may comprise constructing the switch device on an insulating substrate. The switch device may have contacts that consist of a platinum-group metal. The method may further comprise forming an oxidized layer of the platinum-group metal on an outer surface of each of the one or more contacts. The method may further comprise bonding an insulating cap to the insulating substrate, to hermetically seal the switch device. The bonding may occur in an atmosphere that has a proportion of oxygen within a range of 0.5% to 30%, such that, after the switch device has been hermetically sealed within the sealed cavity, an atmosphere within the sealed cavity has a proportion of oxygen within the range of 0.5% to 30%. The platinum-group metal may be ruthenium, and the oxidized layer of the platinum-group metal may be ruthenium dioxide.

A relay device includes a fixed terminal having a pair of fixed contact points, a movable contact portion positioned adjacent to a lower side of the fixed terminal and configured to allow or block energization by being in contact with or spaced apart from the pair of fixed contact points, a fixed core disposed at a predetermined interval below the movable contact portion and configured to be magnetized when control power is applied, a movable core positioned adjacent to a lower side of the fixed core and configured to move toward the fixed core when the control power is applied, and a shaft that passes through the fixed core to connect to the movable contact portion and is coupled to the movable core to move together with the movable core. The shaft is supported by a step portion formed in the movable core to form a stroke gap between the fixed core and the movable core.

Provided herein are methods for an improved bi-stable relay. In some embodiments, a method may include providing a core assembly within a housing, the core assembly comprising a plunger extending through a coil support structure. The method may further include winding a first coil and a second coil about a central section of the coil support structure, providing a first magnet and a first ferromagnetic plate at a first end of the coil support structure, and providing a second magnet and a second ferromagnetic plate at a second end of the coil support structure. In some embodiments, the method may further include activating the first coil or the second coil to move the plunger between a first position and a second position, wherein in the first position a circuit formed by a set of contacts is closed, and wherein in the second position the circuit is open.

Provided herein are methods for an improved bi-stable relay. In some embodiments, a method may include providing a core assembly within a housing, the core assembly comprising a plunger extending through a coil support structure. The method may further include winding a first coil and a second coil about a central section of the coil support structure, providing a first magnet and a first ferromagnetic plate at a first end of the coil support structure, and providing a second magnet and a second ferromagnetic plate at a second end of the coil support structure. In some embodiments, the method may further include activating the first coil or the second coil to move the plunger between a first position and a second position, wherein in the first position a circuit formed by a set of contacts is closed, and wherein in the second position the circuit is open.

An armature for an electromagnetic actuator, the armature including an armature body, at least one electrically conductive member configured for cooperation with a magnetic field generator of an electromagnetic actuator, and a connection end configured for connection of the armature to an apparatus operable by an electromagnetic actuator. The armature body also having a cellular structure. The armature may form part of an electromagnetic actuator, which in turn may be a component in a switch device. The armature may be manufactured by an additive manufacturing process.

An armature for an electromagnetic actuator, the armature including an armature body, at least one electrically conductive member configured for cooperation with a magnetic field generator of an electromagnetic actuator, and a connection end configured for connection of the armature to an apparatus operable by an electromagnetic actuator. The armature body also having a cellular structure. The armature may form part of an electromagnetic actuator, which in turn may be a component in a switch device. The armature may be manufactured by an additive manufacturing process.

A non-magnetic plate having a thin plate shape and being attachable to and detachable from a shaft of an electromagnet included in an electromagnetic contactor, the non-magnetic plate includes: a hole having a circular shape provided at a center of the non-magnetic plate, into which the shaft is to be fitted; and a cutout provided in connection with a front end portion of the non-magnetic plate and the hole, for having the shaft inserted into the hole through from the front end portion side.

A non-magnetic plate having a thin plate shape and being attachable to and detachable from a shaft of an electromagnet included in an electromagnetic contactor, the non-magnetic plate includes: a hole having a circular shape provided at a center of the non-magnetic plate, into which the shaft is to be fitted; and a cutout provided in connection with a front end portion of the non-magnetic plate and the hole, for having the shaft inserted into the hole through from the front end portion side.

An electromagnetic switching device (10) and a method for producing the electromagnetic switching device (10) are disclosed. To this end, a magnetic armature (13) and a pressure pin (19) which is movable in a bearing (21) along an axis (A) are provided. A bearing sleeve (11) accommodates at least the bearing (21) and the magnetic armature (13). An electromagnetic casing (12) and the bearing sleeve (11) are together made of a single material in the form of a one-piece component (100).

An electromagnetic switching device (10) and a method for producing the electromagnetic switching device (10) are disclosed. To this end, a magnetic armature (13) and a pressure pin (19) which is movable in a bearing (21) along an axis (A) are provided. A bearing sleeve (11) accommodates at least the bearing (21) and the magnetic armature (13). An electromagnetic casing (12) and the bearing sleeve (11) are together made of a single material in the form of a one-piece component (100).