An electropermanent magnet key assembly of an information handling system comprising an electropermanent magnet (EPM) having a low-coercivity magnet and a high-coercivity magnet, wherein the EPM is capable of an on state generating a magnetic field and an off state disabling the magnetic field, a key cap, situated atop a pair of scissor plates, capable of downward movement, via action of the scissor plates, from a raised, neutral position in which a surface of the key cap is moved to a depressed position below the neutral position, wherein the downward movement of the key assembly may record a keystroke, a flange operably connected a first scissor plate of the pair of scissor plates and extending opposite of a hinge of the first scissor plate, such that the flange is attracted toward the magnetic field of the EPM situated beneath the pair of scissor plates to urge the first scissor plate to push the key cap to the neutral position in an on state, and a spring exerting a biasing force to rotate a rocker arm toward the flange for urging the flange away from the EPM opposite to the attraction of the magnetic field of the EPM, wherein the effect of the biasing force on movement of the flange is lesser than the effect of the magnetic field generated by the EPM on movement of the flange in the on state.

An electropermanent magnet array is provided. The electropermanent magnet array includes one or more of a plurality of electropermanent magnets of common length, arranged in a parallel fashion, and a planar pole piece, coupled to the first ends of the plurality of electropermanent magnets. Each electropermanent magnet includes a first and a second end opposite the first end.

An electro-permanent magnet (EPM) key assembly of an information handling system may comprise a pair of scissor plates operably connected to a base contact assembly including an EPM such that each of the pair of scissor plates may rotate away from one another in the presence of downward force on a key cap situated atop the pair of scissor plates for actuation of the EPM key assembly; the EPM comprising a low-coercivity magnet and a high-coercivity magnet; wherein an application of a first current pulse applied to an electrically conductive wire coiled around the low-coercivity magnet places the EPM in a first on state to assert a first magnetic field on a ferromagnetic flange operatively coupled to rotate with at least one scissor plate about a hinge; and wherein an application of a second current pulse applied to the electrically conductive wire places the EPM in a second on state to increase the magnetic field on the ferromagnetic flange.

An electropermanent magnet key assembly of an information handling system comprising an electropermanent magnet (EPM) having a low-coercivity magnet and a high-coercivity magnet, wherein the EPM is capable of an on state generating a magnetic field and an off state disabling the magnetic field, a key cap, situated atop a pair of scissor plates, capable of downward movement, via action of the scissor plates, from a raised, neutral position in which a surface of the key cap is moved to a depressed position below the neutral position, wherein the downward movement of the key assembly may record a keystroke, a flange operably connected a first scissor plate of the pair of scissor plates and extending opposite of a hinge of the first scissor plate, such that the flange is attracted toward the magnetic field of the EPM situated beneath the pair of scissor plates to urge the first scissor plate to push the key cap to the neutral position in an on state, and a spring exerting a biasing force to rotate a rocker arm toward the flange for urging the flange away from the EPM opposite to the attraction of the magnetic field of the EPM, wherein the effect of the biasing force on movement of the flange is lesser than the effect of the magnetic field generated by the EPM on movement of the flange in the on state.

A method for assembling an electro-permanent magnet (EPM) key assembly of an information handling system may comprise disposing a pair of scissor plate mounts framed onto a base contact assembly upward through a cap support plate opening within a cap support plate comprising a printed circuit board with pressure sensors to record keystrokes for mounting the EPM key assembly, operably connecting the base contact assembly to the cap support plate, disposing a ferromagnetic flange operably coupled to rotate with at least one scissor plate about a hinge downward through the cap support plate opening, operably connecting the pair of scissor plates to the base contact assembly such that each of the pair of scissor plates may rotate away from one another in the presence of downward force on a key cap, and situating the key cap atop the pair of scissor plates.

There is described a tactile feedback actuator generally having a hammer path having a length extending between two opposite ends, a coil element fixedly mounted relative to the hammer path, a magnetic hammer guidingly mounted for movement along the hammer path. The magnetic hammer is electromagnetically engageable by a magnetic field emitted upon activation of the coil element so as to be longitudinally slid along the hammer path in any one of two opposite directions depending on a polarity of activation of the coil element. The tactile feedback actuator has at least one electropermanent magnet at at least one of the opposite ends of the hammer path, the electropermanent magnet having a magnetization direction aligned with the length of the hammer path, and at least one state toggling device configured for toggling a state of the electropermanent magnet between a magnetized state and an unmagnetized state.

An actuating apparatus having a first actuating unit and a second actuating unit arranged adjacent to the first actuating unit. The actuating units each have elongated tubular coil bodies, actuator coils which are wound around the coil bodies, electromagnetically actuatable actuators which are guided in the coil bodies and are movable relative to the actuator coils, and the coil bodies are D-shaped and face one another with the flattened sides thereof.

A stability control system that detects a change in a vehicle operating characteristic and sends a stabilizing command to an actuator system based on identifying the change is described. The actuator system applies a first magnetic field having a predetermined strength to an electropermanent magnet for a predetermined duration based on receiving the stabilizing command. The first magnetic field transitions the electropermanent magnet from a first state to a second state. The electropermanent magnet generates a second magnetic field in the second state. The second magnetic field modifies at least one of a spring constant or a mechanical resistance of a suspension component within a suspension system of the vehicle, and the electropermanent magnet retains the second state after the predetermined duration in absence of the first magnetic field.

An actuator assembly is disclosed. The actuator assembly includes a driven component, a coil housing including a first coil and a second coil, and an armature housing including a first armature and a second armature. The first armature is axially fixed to the armature housing, and the second armature is slidably received within the armature housing and axially fixed to the driven component. In a first energized state, the first coil is energized, and the driven component is driven a first predetermined distance towards the coil housing. In a second energized state, the first coil and the second coil are energized, and the driven component is driven a second predetermined distance towards the coil housing.

The present invention provides a receiver comprising a housing, an armature, and a magnet assembly, where the armature and the magnet assembly are arranged in the housing. The magnet assembly comprises a magnet and a magnet shell. The magnet shell forms an inner space in which the magnet is provided, and where at least a part of the armature extends in the inner space. The magnet shell comprises at least two shell parts forming an inner surface encircling the inner space, where each of the shell parts comprises a first and a second end face. The first end face of a first shell part abuts one of the first and second end faces of an adjacent shell part, and the second end face of the first shell part abuts one of the first and second ends faces of an adjacent shell part.