Abstract: A magnet carrier for a moving magnet actuator. The magnet carrier includes a single longitudinal beam extending in the direction of intended motion of magnet carrier and two pairs of transverse ribs, extending from opposite sides of the longitudinal beam. The longitudinal beam and the two pairs of transverse ribs are arranged to engage a pair of substantially planar magnets. The single longitudinal beam and the two pairs of transverse ribs each comprise a lip for engaging a chamfered edge of a pair of substantially planar magnets so that the lip opposes motion of the magnets in a direction perpendicular to the plane of the magnets. The longitudinal beam and the transverse ribs are adhered to the magnets by an adhesive with an elastic modulus of less than 5 MPa and a tensile strain of greater than 100%.

Abstract: A magnet structure for a linear motor. Magnet tiles of the magnet structure are arranged so that intra-pole tile gaps extend in a direction parallel to the direction of motion of the linear motor.

Abstract: A loudspeaker including a moving magnet motor. The moving magnet motor includes an armature comprising a magnet carrier, and a lever arm, coupling the armature and a pivot. The lever arm further couples the armature and an acoustic diaphragm to transmit motion of the armature to the acoustic diaphragm to cause the acoustic diaphragm to move. The loudspeaker described may be torque balance and moment balanced.

Abstract: A loudspeaker including a moving magnet motor. The moving magnet motor includes an armature comprising a magnet carrier, and a lever arm, coupling the armature and a pivot. The lever arm further couples the armature and an acoustic diaphragm to transmit motion of the armature to the acoustic diaphragm to cause the acoustic diaphragm to move. The loudspeaker described may be torque balance and moment balanced.

Abstract: A magnet carrier for a moving magnet actuator. The magnet carrier includes a single longitudinal beam extending in the direction of intended motion of magnet carrier and two pairs of transverse ribs, extending from opposite sides of the longitudinal beam. The longitudinal beam and the two pairs of transverse ribs are arranged to engage a pair of substantially planar magnets. The single longitudinal beam and the two pairs of transverse ribs each comprise a lip for engaging a chamfered edge of a pair of substantially planar magnets so that the lip opposes motion of the magnets in a direction perpendicular to the plane of the magnets. The longitudinal beam and the transverse ribs are adhered to the magnets by an adhesive with an elastic modulus of less than 5 MPa and a tensile strain of greater than 100%.

Abstract: A magnet carrier for a moving magnet actuator. The magnet carrier includes a single longitudinal beam extending in the direction of intended motion of magnet carrier and two pairs of transverse ribs, extending from opposite sides of the longitudinal beam. The longitudinal beam and the two pairs of transverse ribs are arranged to engage a pair of substantially planar magnet structures.

Abstract: A loudspeaker including a moving magnet motor. The moving magnet motor includes an armature comprising a magnet carrier, and a lever arm, coupling the armature and a pivot. The lever arm further couples the armature and an acoustic diaphragm to transmit motion of the armature to the acoustic diaphragm to cause the acoustic diaphragm to move. The loudspeaker described may be torque balance and moment balanced.

Abstract: A loudspeaker including a moving magnet motor. The moving magnet motor includes an armature comprising a magnet carrier, and a lever arm, coupling the armature and a pivot. The lever arm further couples the armature and an acoustic diaphragm to transmit motion of the armature to the acoustic diaphragm to cause the acoustic diaphragm to move. The loudspeaker described may be torque balance and moment balanced.

Abstract: An armature for a linear motor is described. The armature includes a first of a pair of magnetic structures comprising a first plurality of maglettes each having a magnetic polarity vector; an angle between two adjacent magnetic polarity vectors in the first plurality of maglettes having a first magnitude; and a second of the pair of magnetic structures comprising a second plurality of maglettes each having a magnetic polarity vector; an angle between two adjacent magnetic polarity vectors in the second plurality of maglettes having a second magnitude, the first plurality of maglettes including a first outer maglette that is adjacent to a second outer maglette of the second plurality of maglettes, an angle between the magnetic polarity vectors of the first and second outer maglettes having a third magnitude that is different than at least one of the first and the second magnitudes.

Abstract: An armature for a linear motor is described. The armature includes a first of a pair of magnetic structures comprising a first plurality of maglettes each having a magnetic polarity vector; an angle between two adjacent magnetic polarity vectors in the first plurality of maglettes having a first magnitude; and a second of the pair of magnetic structures comprising a second plurality of maglettes each having a magnetic polarity vector; an angle between two adjacent magnetic polarity vectors in the second plurality of maglettes having a second magnitude, the first plurality of maglettes including a first outer maglette that is adjacent to a second outer maglette of the second plurality of maglettes, an angle between the magnetic polarity vectors of the first and second outer maglettes having a third magnitude that is different than at least one of the first and the second magnitudes.

Abstract: An electromagnetic actuator includes a stator assembly mounted to a center pole formed of material having high magnetic permeability and functions as a return path for the magnetic field generated when current is passed through coils in the stator assembly. When current is applied to one or more coils within the stator assembly, a magnetic field is generated that interacts with a magnetic field generated by one or more magnets disposed within the armature assembly and causes the armature to move relative to the center pole thus, for example, opening or closing a valve.

Abstract: An electromagnetic actuator includes a stator assembly mounted to a center pole formed of material having high magnetic permeability and functions as a return path for the magnetic field generated when current is passed through coils in the stator assembly. When current is applied to one or more coils within the stator assembly, a magnetic field is generated that interacts with a magnetic field generated by one or more magnets disposed within the armature assembly and causes the armature to move relative to the center pole thus, for example, opening or closing a valve.

Abstract: An electromagnetic actuator includes a stator assembly mounted to a center pole formed of material having high magnetic permeability and functions as a return path for the magnetic field generated when current is passed through coils in the stator assembly. When current is applied to one or more coils within the stator assembly, a magnetic field is generated that interacts with a magnetic field generated by one or more magnets disposed within the armature assembly and causes the armature to move relative to the center pole thus, for example, opening or closing a valve.