A latching assembly for a solenoid operated valve includes a solenoid assembly including a core defining a bore extending along an axis, and a coil mounted to the core and disposed about the axis. The solenoid operated valve further includes an armature assembly including an armature stud disposed at least partially within the bore and extending along the axis, an armature disc disposed radially about a portion of the armature stud and defining at least one window, and at least one stationary magnet respectively disposed within the at least one window.

A push-pull solenoid is provided with a cylindrical guide member that is fixed to a case. A circular outer peripheral surface of a plunger is in contact with a friction guide surface formed on a circular inner peripheral surface of the guide member, and slides along the friction guide surface. Frictional force due to contact with the friction guide surface is always acting on the plunger, so it is possible to suppress impact-like contact of the plunger with an object to be manipulated during suctioning, and vibration and noise caused thereby. Moreover, over-recovery and falling-out of the plunger after suction is released can also be prevented.

Levitation and Propulsion Unit-2 (LPU-2) is a thrust generating device able to generate resultant force to create motion without mass flow and/or momentum exchange. The technology primarily uses electromagnetic energy, permanent magnetic repulsive energy and kinetic energy, to generate internal resultant thrust or motion. This thrust generating device comprises of one or two rapid action enable and high driving force electromagnet moving magnet linear actuators with minimum moving parts. The technology mainly leverages on compression and expansion of compressed repulsive magnetic flux. Through regulation and systematic control of current to each electromagnet, the device is able to generate resultant force or motion without external interaction.

An electrically driven fastener structure includes a body, a fastening unit and a wire. The body has a first assembly portion. The fastening unit has a second assembly portion corresponding to the first assembly portion. The wire is adapted to pass a current and to pass through the first assembly portion or the second portion to form a magnetic switch using the first assembly portion or the second assembly portion, so as to drive the magnetic switch based on on or off or strong or weak of the current, or to drive the magnetic switch based on on or off or strong or weak of a magnetic force.

An electromagnetic drive device includes a through-hole, through which a rod is received, and the rod includes an outer wall surface that is slidable relative to the through-hole. A clearance, which is measured from the outer wall surface of the rod placed in a maximum projected position to an inner wall surface of the through-hole, is smaller than a clearance, which is measured from the outer wall surface of the rod placed in a maximum retracted position to the inner wall surface. Therefore, a retracting-time clearance becomes relatively large, and thereby a frictional force between the rod and a support tubular portion can be reduced. Furthermore, a projecting-time clearance becomes relatively small, and thereby the amount of swing of a distal end of the rod in a radial direction can be reduced.

The electromagnetic device includes a coil bobbin around which a coil is wound and that is formed from a non-magnetic material, and a movable core that is provided in a cylindrical hollow portion of the coil bobbin and moves by excitation of the coil. A first protrusion and a second protrusion facing a part of the lower half of the movable core are formed on the inner peripheral surface of the cylindrical hollow portion in ranges extending from two openings to a middle point of the coil bobbin, respectively, and the movable core is supported by the first protrusion and the second protrusion when the movable core moves.

Actuator (10) comprising a base section (14,14a,14b); a permanent magnet (18,18a,18b); an electro permanent magnet (20, 20a, 20b); a coil (22, 22a, 22b) located around the electro permanent magnet (20, 20a, 20b); a power controller (24, 24a, 24b); and a movable member (28) comprising at least one magnetic target section (36), the movable member (28) being arranged to move to a first position (12) relative to the base section (14,14a,14b), when the electro permanent magnet (20, 20a, 20b) adopts a first polarity, and arranged to move to a second position (46) relative to the base section (14,14a,14b) due to a magnetic field generated by the permanent magnet (18,18a,18b) and the electro permanent magnet (20, 20a, 20b) in combination and acting on the magnetic target section (36), when the electro permanent magnet (20, 20a, 20b) adopts a second polarity. A lock device (50), a handle device (86) and a method are also provided.

An electromagnetic drive unit for a switching device includes: a magnetic core with a first, a second, and a third magnetic path each arranged transversely with respect to a longitudinal axis of the electromagnetic drive unit and coupled to longitudinal magnetic struts at respective ends to form a magnetic frame structure; an armature movable along the longitudinal axis between a first and a second state; and a first and a second magnetic coil for moving the armature based on excitation of the first and/or the second magnetic coil. The first magnetic coil is arranged between the first and the second magnetic path and the second magnetic coil is arranged between the second and the third magnetic path with respect to the longitudinal axis. The magnetic core and the magnetic coils are arranged such that a magnetic flux that flows through the magnetic paths to move the armature is adjustable.

In one aspect, there is disclosed a solenoid having a bobbin with a core wire positioned about the bobbin to form a coil. A power supply wire is connected an end of the core wire and a frame is connected to the bobbin. An overmolded housing surrounds the core wire, the frame and a portion of the power supply wire.

Levitation and Propulsion Unit-2 (LPU-2) is a thrust generating device able to generate resultant force to create motion without mass flow and/or momentum exchange. The technology primarily uses electromagnetic energy, permanent magnetic repulsive energy and kinetic energy, to generate internal resultant thrust or motion. This thrust generating device comprises of one or two rapid action enable and high driving force electromagnet moving magnet linear actuators with minimum moving parts. The technology mainly leverages on compression and expansion of compressed repulsive magnetic flux. Through regulation and systematic control of current to each electromagnet, the device is able to generate resultant force or motion without external interaction.