Integrated stator disk devices, systems, and methods for torque generation are provided. The resistive torque-generating device can include an integrated stator disk system including at least one metallic stator disk having a planar disk body, and at least one rotor disposed adjacent to the at least one metallic stator disk such that there are at least two shear areas formed by the at least one metallic stator disk and the at least one rotor; and magneto-rheological material disposed between portions of the at least one metallic stator disk and the at least one rotor. In some embodiments, the rotor(s) is/are a bent rotor(s), thereby providing for increased torque generation while fitting within tight space constraints.

An electromagnetic linear actuator is provided having a housing having a casing section and an end piece, a coil arrangement having two coils which extend about a common axis, are wound in opposite directions and are offset axially from one another, an armature arrangement mounted displacably in the housing along the axis, and a shaft, which passes through the end piece. A magnet arrangement at the end of the shaft has an axially magnetized permanent magnet and two disc-shaped flux conducting pieces are arranged on a front side. The first coil which faces away from the free end of the shaft has a region with a reduced internal diameter. A core of a magnetically active material is held in the coil. In each end positions of the armature arrangement, at least 50% of the axial length of the magnet arrangement is overlapped by one of the coils.

A method for manufacturing a solenoid-armature ram composite and a corresponding solenoid-armature ram composite for a linear actuator which has a stator with a coil that can be fed with electrical current for producing an electromagnetic field and a single-part or multi-part solenoid armature movable along a longitudinal axis of the coil and a ram connected with the solenoid armature, provides that the solenoid armature surrounds the ram in a ring shape and a gap between the ram and the solenoid armature is cast with a casting material.

Various devices and techniques related to magnetically-actuated valves are generally described. In some examples, valves may include a bonnet defining an enclosure. In various examples, a movable valve member may be disposed in the enclosure. A valve stem may be disposed in the enclosure and may be operatively coupled to the movable valve member. A first internal ferromagnetic actuation member and a second internal ferromagnetic actuation member may be coupled to the valve stem. The first internal ferromagnetic actuation member and the second internal ferromagnetic actuation member may be disposed in a spaced relationship along the valve stem. In various examples, the valves may include an external actuator slidably engaged to an exterior surface of the valve bonnet. The external actuator may comprise a first magnet magnetically coupled to the first internal ferromagnetic actuation member and a second magnet magnetically coupled to the second internal ferromagnetic actuation member.

High temperature switch apparatus are disclosed. An example apparatus includes a ceramic contact base having an opening therein configured to removably receive a contact, a first ceramic plunger housing portion and a second ceramic plunger housing portion, the first ceramic plunger housing portion including a first protrusion, the second ceramic plunger housing portion including a first recess, the first recess to receive the first protrusion, and a first ceramic contact housing portion and a second ceramic contact housing portion, the first ceramic contact housing portion including a second protrusion and a first cavity, the second ceramic contact housing portion including a second recess and a second cavity, the first ceramic plunger housing portion, the second ceramic plunger housing portion, and the ceramic contact base configured to be coupled in between the first and second cavities when the second recess receives the second protrusion.

The electronic device generally has a housing; a tactile input interface mounted to the housing; a tactile feedback actuator having a hammer path having two ends, with at least one of said two ends end being provided in the form of a stopper and a coil element fixed relative to the housing, and a magnetic hammer movable between the ends of the hammer path, the magnetic hammer having two opposite ends, each end of the magnetic hammer having a corresponding permanent magnet, the two permanent magnets having opposing polarities, the magnetic hammer being electromagnetically engageable by a magnetic field emitted upon activation of the coil element so as to be longitudinally moved along the hammer path to strike the stopper; and a controller housed within the housing and in communication with the tactile input interface and the tactile feedback actuator.

Provided according to the present invention is a solenoid with a built-in permanent magnet, with which it is possible to suppress an increase in the amount of magnetic flux that passes through the chuck part, even when the magnetic flux generated by a coil is greater than the magnetic flux of the magnet, and to reliably reduce attraction force. In this solenoid, a permanent magnet and a coil are both built into a cylindrical case having an opening part; the permanent magnet and the coil are both separated and arranged inside the case; a ring member is arranged adjacent to the permanent magnet; a movable iron core is inserted inside the coil; and between the movable iron core and the coil, a metal coil cover is provided so as to cover the coil. The distance d between the case inner wall and the ring member can also be in the range of 0.1-0.3 mm.

An electromagnetic actuator includes an armature (18) movable axially relative to a stationary core (14) as a reaction to energizing of a stationary coil (12) in an actuator housing (10). The armature (18) is gripped by an axially extended slide (20) guided in a core passage (50) of the core such that a movement of the armature in the direction of the core entrains the slide. An end section (26) of the slide, axially opposite the armature, cooperates with an adjusting partner, the slide having a long rod section (34) and a disk-type end section (30) with a widened diameter on the rod section, on the end in the direction of the armature (18), the axial extension (W) of the end section. determining a minimum distance between the armature and the core in an abutment state of the armature on an end surface and/or front surface of the core, facing the armature.

A method for producing one or more concave cut-outs on a main body, which is in particular substantially cylindrical, more particularly one or more grooves on a magnetic armature, a push rod, or a magnetic keeper plate, includes the following steps: providing a main body, which is in particular substantially cylindrical and has a first axis of rotation, rotating the cylindrical main body around the first axis of rotation in a first rotational direction by means of a lathe, and rotating a striking tool, which is provided with a number of fly cutters, around a second axis of rotation, which extends in parallel and offset in relation to the first axis of rotation in a second rotational direction, which is opposite to the first rotational direction, in such a way that the fly cutter engages in a material-removing manner in the main body to produce the cut-out.

Provided herein is an improved a bi-stable actuator including a first core component coupleable to a housing, the first core component including a central bore containing a shaft and a shaft spring. The actuator may further include a second core component extending around the first core component, wherein the second core component and the first core component are axially moveable relative to one another, and a third core component extending within the second core component, wherein the third core component and the second core component are axially moveable relative to one another. The actuator may further include a positioning sphere extending through an opening of the first core component, wherein the positioning sphere abuts the second core component when the bi-stable actuator is in a first position, and wherein the positioning sphere abuts a detent of the shaft when the bi-stable actuator is in a second position.