Abstract: A cleaning element carrier for a toothbrush in a form of a disk has a back surface including a central depression covering at least 70% of the back surface and forming an edge at the border. The carrier's front surface includes at least one protrusion so that the front surface comprises two levels, wherein the area covered by the depression is larger than the area covered by the protrusion.

Abstract: A method for manufacturing a toothbrush head or a part thereof comprises steps of providing a plurality of bristle tufts; providing a hole perforation plate comprising a front surface, a back surface, a thickness therebetween, and a plurality of holes grouped into a plurality of hole arrangements, wherein the front surface is uneven in an area of the hole arrangement; pushing the bristle tufts through the holes; and fusing ends of the bristle tufts at the back surface of the plate by application of thermal energy, thereby forming a plurality of fuse balls that are larger than the holes of the plate; and mounting the plate with the plurality of bristle tufts into a brush head.

Abstract: A hole perforation plate has a front surface, a back surface, a thickness therebetween, and a plurality of holes, grouped into more than one arrangement of holes, wherein the more than one arrangement of holes can be identical or different compared to one another regarding the number of the holes, the shape of the holes, the size of the holes, the distance between the holes, the arrangement of the holes, and a combination thereof.

Abstract: A hole perforation plate (60) has a front surface (61), a back surface (62), a thickness (D) therebetween, and a plurality of holes (70), grouped into more than one arrangement (65) of holes (70), wherein the more than one arrangement (65) of holes (70) can be identical or different compared to one another regarding the number of the holes (70), the shape of the holes (70), the size of the holes (70), the distance between the holes (70), the arrangement of the holes (70), and a combination thereof, and wherein the front surface (61) is uneven in the area of the arrangement (65) of the holes (70).

Abstract: A drive unit for converting a rotational motion into a linear reciprocating motion includes a motor shaft extension having at least a first eccentric shaft element moving in a circle around the motor shaft's longitudinal axis and in a plane perpendicular thereto and at least one elastically deformable unit having a coupling element for coupling with a driven element. The first eccentric shaft element is coupled with the deformable unit to periodically deform the deformable unit so that a longitudinal position of the motor shaft of the coupling element of the deformable unit periodically changes. The deformable unit has a first arm section and a second arm section, each having a first end and a second end. The second end of the first arm section is connected to the first end of the second arm section, wherein the first end of the first arm section is connected to a mounting structure fixed relative to the motor.

Abstract: A toothbrush head or a brush carrier having at least one carrier element including at least one shape-shifting tuft mounted thereon. The shape-shifting tuft raises from a mounting end on a mounting surface of the carrier element generally along an extension direction towards a free end of the shape-shifting tuft. The shape-shifting tuft has a length from the mounting base to the free end and comprises a plurality of fibers.

Abstract: A filament-transportation device has a plurality of tube elements for transporting filaments from an intake area to an outtake area via an airstream generated by underpressure or overpressure. Each tube element has an end orifice. A baffle-plate unit has a baffle plate having a through-hole, a top surface opposite to the end orifices to stop the transport of the filaments, and a bottom surface opposite to the top surface. The baffle plate includes baffle plate elements associated with the end orifices. Each of the baffle-plate elements has a top surface forming part of the top surface of the baffle plate, a bottom surface forming part of the bottom surface of the baffle plate, and a side surface extending between the top and bottom surface.

Abstract: A brush head for an oral care implement includes at least one (first) group of tufts extending from a mounting surface of a tuft carrier having a rotation axis. The tufts have a base end and a free end. The tufts of the first group are tufts having an extension in a circumferential direction about the rotation axis exceeding an extension in a radial direction. The tufts of the first group may be inclined with respect to the mounting surface in at least one direction. Each of the first-group tufts may comprise a first group of filaments and a second group of filaments, wherein the second-group filaments' free ends protrude beyond the first-group filaments' free ends.