A solenoid is provided. The solenoid includes a housing, a pole piece, an end plate formed with or coupled to the housing, a wire coil arranged within the housing, a permanent magnet arranged between the pole piece and the end plate, an armature configured to selectively move between a first position and a second position in response to a current applied to the wire coil, and a spring configured to bias the armature. When the wire coil is de-energized, the armature is maintained in at least one of the first position and the second position. The first position is configured to be maintained by the spring and the second position is configured to be maintained by magnetic attraction between the armature and the permanent magnet through engagement between the armature and the pole piece.

The disclosure relates to an electromagnetic actuating device for a hydraulic camshaft adjuster. The electronic actuating device includes a housing, a yoke, a pole core, an armature, and an actuating pin and a bearing unit. The actuating pin is led out of the housing by means of the bearing unit, and the bearing unit forms a press-fit connection with the housing or with a component connected to the housing. To improve the connection, the bearing unit, the housing and/or the component connected to the housing have a recess that increases the elasticity of the press-fit connection.

A solenoid actuator includes a housing assembly, a bobbin assembly, a coil, an armature, and an anti-rotation structure. The bobbin assembly is disposed at least partially within the housing assembly and includes a return pole and a yoke. The yoke has an inner surface that defines an armature cavity. The coil is disposed within the housing assembly and is wound around at least a portion of the bobbin assembly. The armature is disposed within the armature cavity and is axially movable relative to the yoke. The anti-rotation structure is disposed within the housing assembly and engages at least a portion of the armature. The armature and the anti-rotation structure each have at least one feature formed thereon that mate with each other and thereby prevent rotation of the armature.

An underwater acoustic source can include a first piston coupled to a second piston and a plurality of linear magnetic actuators directly connected to each of the first piston and the second piston. Each of the plurality of linear magnetic actuators include a linear shaft positioned within the cylindrical magnetic assembly and mounted to the first end of the rigid ferromagnetic housing and the second end of the rigid ferromagnetic housing, such that the linear shaft is stationary, and linear bearings positioned between the cylindrical magnet assembly and the linear shaft to allow the cylindrical magnet assembly to translate along the linear shaft relative to the cylindrical electrical coil, and wherein each of the plurality of linear magnetic actuators is activated, the first piston and the second piston oscillate towards and away from each other, causing acoustic waves to be generated in water.

A linear actuator comprising a support structure; at least one magnet provided on the support structure; a carriage; at least one coil arrangement provided around the carriage; and a spring arrangement operatively connected between the support structure and the carriage to urge the carriage towards a predetermined position relative to the support structure; wherein a part of one of the support structure and the carriage is received by a part of the other of the support structure and carriage so as to constrain motion of the carriage relative to the support structure substantially along a longitudinal axis of the linear actuator.

A shaft outputs a thrust force in an axial direction by using a magnetic flux caused by an electric current flowing through a coil. A housing is made of resin and retains the shaft. The housing has a base portion having an outer circumferential surface, which is configured to be entirely in contact tightly with a sealing member. The housing further has a distal portion having an outer circumferential surface defining a depression. The outer circumferential surfaces of the base portion and the distal portion are substantially equal in diameter and are formed continuously.

A relay contactor is provided and includes input and output leads, a shaft assembly, an actuator and first and second bearing assemblies. The shaft assembly includes a shaft, a plate disposed on the shaft and an elastic element. The shaft and the plate are movable between an open position at which the plate is displaced from the input and output leads and a closed position at which the plate contacts the input and output leads. The actuator is coupled to the shaft at a first side of the plate and is configured to selectively move the shaft and the plate into the closed position in opposition to bias applied by the elastic element. The first and second bearing assemblies are disposed to movably support the shaft at the first side and at a second side of the plate, respectively.

An alignment member for a solenoid is provided. The solenoid includes a housing, a solenoid coil arranged within the housing, a first pole piece arranged within the housing, a second pole piece arranged at least partially within the housing, and a disk. The alignment member includes a first end, a second end opposite the first end, and a center portion that defines a center portion diameter that is less than a diameter defined by the first end and the second end.

A solenoid includes a coil defining an axis, an armature disposed radially inward of the coil, and a plurality of linear guides disposed at least partially between a radially inward facing surface of the coil and a radially outward facing surface of the armature. Each of the linear guides has a frictional surface area, with a dimension of the frictional surface area aligned with the axis being larger than a dimension of the frictional surface area aligned with a circumference of the coil.

The present disclosure relates to a low friction bearing liner for a solenoid that may include a core layer, a first outer layer overlying a first surface of the core layer, a second outer layer overlying the first outer layer, a first inner layer overlying a second surface of the core layer that is opposite of the first surface of the core layer, and a second inner layer overlying the first inner layer. The first outer layer and the first inner layer may include a fluoropolymer material and may have a melt flow rate of at least about 2 g/10 min at 372 C. The second outer layer and the second inner layer may include a fluoropolymer material distinct from the fluoropolymer material of the first outer layer and may have a surface coefficient of friction of not greater than about 0.2.