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.

An optical device includes a movable section including an optical section that deflects video light in accordance with the angle of incidence of the video light incident on a light incident surface and outputs the deflected video light and a holder that supports the optical section, an actuator that rotates the movable section around a first axis, an actuator that rotates the movable section around a second axis, a drive circuit that supplies the actuator with a first drive signal and the actuator with a second drive signal, and a sensor disposed in a position different from the positions on the first and second axes detects the position of the optical section, and the drive circuit adjusts the first and second drive signals in accordance with the position of the optical section detected with the sensor.

A magnetic device comprising at least one stator (1) and one actuator (2), wherein the stator (1) and the actuator (2) respectively comprise at least one magnet with pole ends and a line of action of the magnet, and the actuator (2) can be moved linearly along a movement axis (3) and/or rotatably about a movement axis in a movement direction (4), wherein a stator line of action (15) of the stator (1) or a stator extension line (16) of the stator line of action (15), which stator extension line (16) extends as a geometric ray away from the pole end of the stator (1) as geometric tangent to the stator line of action (5), and an actuator line of action (25) of the translator (2) or an actuator extension line (26) of the translator line of action (25), which translator extension line (26) extends as a geometric ray away from the pole end of the translator (2) as geometric tangent to the translator line of action (25), respectively have intersection points (10), and the stator line of action (15), possibly the stator extension line (16), the translator line of action (25), and possibly the translator extension line (26) form a closed geometric shape so that the magnetic flux between the stator (1) and the translator (2) is bundled, wherein lines of action (5) and extension lines (6) extend through the magnetic device in an intersecting plane (11) comprising the movement axis (3).

A magnetic device comprising at least one stator (1) and one actuator (2), wherein the stator (1) and the actuator (2) respectively comprise at least one magnet with pole ends and a line of action of the magnet, and the actuator (2) can be moved linearly along a movement axis (3) and/or rotatably about a movement axis in a movement direction (4), wherein a stator line of action (15) of the stator (1) or a stator extension line (16) of the stator line of action (15), which stator extension line (16) extends as a geometric ray away from the pole end of the stator (1) as geometric tangent to the stator line of action (5), and an actuator line of action (25) of the translator (2) or an actuator extension line (26) of the translator line of action (25), which translator extension line (26) extends as a geometric ray away from the pole end of the translator (2) as geometric tangent to the translator line of action (25), respectively have intersection points (10), and the stator line of action (15), possibly the stator extension line (16), the translator line of action (25), and possibly the translator extension line (26) form a closed geometric shape so that the magnetic flux between the stator (1) and the translator (2) is bundled, wherein lines of action (5) and extension lines (6) extend through the magnetic device in an intersecting plane (11) comprising the movement axis (3).

Electromechanical lock and method are disclosed. The lock includes: a movable permanent magnet to move between a first position and a second position; a stationary permanent semi-hard magnet; and an electrically powered magnetization coil positioned adjacent to the stationary permanent semi-hard magnet to switch a polarity of the stationary permanent semi-hard magnet between a first magnetization configuration and a second magnetization configuration. The first magnetization configuration of the stationary permanent semi-hard magnet attracts the movable permanent magnet to the first position. The second magnetization configuration of the stationary permanent semi-hard magnet repels the movable permanent magnet to the second position. A magnetic axis of the movable permanent magnet is side by side with a magnetic axis of the stationary permanent semi-hard magnet.

Floor panels are shown, which are provided with a mechanical locking system on long and short edges allowing installation with vertical snap folding that could be accomplished automatically without tools and where the short edge locking system has a tongue made in one piece with the panel. The floor panels may have a first and a second connector at the long edges that are configured to obtain a minimum of friction facilitating a displacement, by a spring back force from the bending of a short edge locking strip, of a new panel in a horizontal direction along the long edge during the vertical snap folding action.

Floor panels are shown, which are provided with a mechanical locking system on long and short edges allowing installation with vertical snap folding that could be accomplished automatically without tools and where the short edge locking system has a tongue made in one piece with the panel. The floor panels may have a first and a second connector at the long edges that are configured to obtain a minimum of friction facilitating a displacement, by a spring back force from the bending of a short edge locking strip, of a new panel in a horizontal direction along the long edge during the vertical snap folding action.

A gas shut-off valve is provided that includes a valve body having a gas inlet, a gas outlet, and a gas passage opening for communicating the gas inlet with the gas outlet. The gas shut-off valve includes an electromagnetic actuator suitable for opening and closing the gas passage opening. The electromagnetic actuator including an electromagnet, a swinging arm with a first end and a second end, and a closure member coupled to the first end. The swinging arm being made of a ferromagnetic material and rotatable at a pivoting area located at the second end between a closed position and an open position. In the closed and open position the pivoting area is supported on the electromagnet. In the open position the pivoting area and an additional segment of the swinging arm are supported on the electromagnet. The closure member being fixed with play to the first end of the swinging arm.

An electromagnetic actuating device includes an armature, which has a permanent magnet and can move along a longitudinal axis between actuation positions relative to a stationary coil and in reaction to energization, armature has an engagement section for interacting with a plunger, and which armature can move from a first actuation position, which is stable in the currentless state, into a second actuation position against a restoring force of a spring, wherein the coil has a first coil unit, which acts on the armature and which releases the armature from the first actuation position, wherein the coil has a second coil unit which, during movement, applies to the armature a force which accelerates the armature, and wherein the coil has a restoring coil such that when the armature is returned from the second into the first actuation position, the restoring coil boosts the restoring force of the spring.

An electromagnetic actuating device includes an armature, which has a permanent magnet and can move along a longitudinal axis between actuation positions relative to a stationary coil and in reaction to energization, armature has an engagement section for interacting with a plunger, and which armature can move from a first actuation position, which is stable in the currentless state, into a second actuation position against a restoring force of a spring, wherein the coil has a first coil unit, which acts on the armature and which releases the armature from the first actuation position, wherein the coil has a second coil unit which, during movement, applies to the armature a force which accelerates the armature, and wherein the coil has a restoring coil such that when the armature is returned from the second into the first actuation position, the restoring coil boosts the restoring force of the spring.