Abstract: The mouthpiece includes a plurality of individual thin layers of material forming a base or shell portion of the mouthpiece alternating with a plurality of individual bristle layers which are configured to the shape of bristles at the interior surfaces thereof. The base layers are comprised of a material which is sufficiently stiff to permit driving of the mouthpiece, while the bristle layers comprise material which is sufficiently flexible to produce an effective scrubbing action in operation without damage to the mouth tissues.

Abstract: The toothbrush includes a brushhead (24) having a multi-layer bristle field assembly (30), which includes alternate thin base layers (32) and thin bristle layers (34) which are bonded together to form the bristle field assembly. The base layers provide support for the bristle field assembly while the bristle layers are configured to provide bristle elements therealong for brushing of the teeth.

Abstract: A magnetic actuator system which includes a case (10) and a spindle (22) which extends through the case comprising a magnetizable material such as iron. The actuator further includes a pair of permanent magnet assemblies (14, 16) positioned fixedly within the casing with a longitudinal space there between, wherein the permanent magnet assemblies comprise an alternating plurality of north pole/south magnet sections (18) which extend longitudinally or circumferentially of the actuator. The actuator further includes a coil winding (24) which surrounds the spindle, positioned between the two permanent magnet assemblies. Magnetic pole assemblies (28, 30) attached to the spindle are positioned within the volume encompassed by the permanent magnet assemblies, such that an alternating drive signal produces an oscillating action of the spindle of desired frequency and amplitude.

Abstract: The mouthpiece includes a plurality of individual thin layers of material forming a base or shell portion of the mouthpiece alternating with a plurality of individual bristle layers which are configured to the shape of bristles at the interior surfaces thereof. The base layers are comprised of a material which is sufficiently stiff to permit driving of the mouthpiece, while the bristle layers comprise material which is sufficiently flexible to produce an effective scrubbing action in operation without damage to the mouth tissues.

Abstract: The toothbrush includes a brushhead (24) having a multi-layer bristle field assembly (30), which includes alternate thin base layers (32) and thin bristle layers (34) which are bonded together to form the bristle field assembly. The base layers provide support for the bristle field assembly while the bristle layers are configured to provide bristle elements therealong for brushing of the teeth.

Abstract: A magnetic actuator system which includes a case (10) and a spindle (22) which extends through the case comprising a magnetizable material such as iron. The actuator further includes a pair of permanent magnet assemblies (14, 16) positioned fixedly within the casing with a longitudinal space there between, wherein the permanent magnet assemblies comprise an alternating plurality of north pole/south magnet sections (18) which extend longitudinally or circumferentially of the actuator. The actuator further includes a coil winding (24) which surrounds the spindle, positioned between the two permanent magnet assemblies. Magnetic pole assemblies (28, 30) attached to the spindle are positioned within the volume encompassed by the permanent magnet assemblies, such that an alternating drive signal produces an oscillating action of the spindle of desired frequency and amplitude.