Abstract: An oral care implement has an overall length extension extending between a proximal end and a distal end, the distal end being opposite the proximal end. The oral care implement comprises a head at the proximal end and a handle, the handle being at least partially made from a material having a density being higher than the density of the material of the head. The oral care implement has a center of gravity located at a distance measured from the distal end, and the ratio of said distance to the overall length extension of the oral care implement is from about 0.30 to about 0.45, preferably from about 0.35 to about 0.42, further preferably from about 0.38 to about 0.41.

Abstract: A connector with a first substantially cylindrical section having a cavity with a spring-loaded ball-snap element comprising a ball and a spring. An at least partially conically shaped section connecting the first substantially cylindrical section and a second substantially cylindrical section. The first and the second substantially cylindrical sections and the at least partially conically section define a longitudinal length extension. The first substantially cylindrical section and the second substantially cylindrical section are off-center with respect to the longitudinal length extension. A head having a hollow portion is dimensioned to receive the second substantially cylindrical section, the at least partially conically shaped section and a part of the first substantially cylindrical section. The hollow portion has an inner wall with a circular recess dimensioned to receive the ball, removably attaching the head to the second substantially cylindrical section.

Abstract: A handle for a personal care implement comprises a connector for repeatedly attaching and detaching a head to and from the handle, the handle further comprising a core structure, the core structure and the connector being unitarily made to form a core-connector unit, wherein the core-connector unit is made from a fiber-reinforced material.

Abstract: A handle for a personal care implement includes a core structure as a first component, and a second component, the second component at least partially covering the core structure, wherein the core structure is made from a fiber-reinforced material, and the second component is made from a polymer material comprising an inorganic filler.

Abstract: A polymeric handle material for a personal care implement comprises a polymer base material, and a filler material, preferably an inorganic filler material, wherein the polymer base material is selected from the group of polyamide, styrene acrylonitrile resin, polybutylene terephthalate, polyethylene terephthalate, recycled plastic materials, or mixtures thereof, and wherein the filler material constitutes from about 50 wt % to about 80 wt %, preferably from about 70 wt % to about 75 wt %, of the polymeric handle material.

Abstract: A method for manufacturing a handle for a personal care implement includes molding from a fiber-reinforced material, preferably by injection-molding, a core-connector unit having a core structure and a connector for attaching and detaching a head to and from the handle, and molding, preferably by injection-molding, a polymeric material onto the core structure to form a component that at last partially covers the core structure.

Abstract: A handle for a personal care implement includes a connector for repeatedly attaching and detaching a head to and from the handle, the handle having a core structure, the core structure and the connector being unitarily made to form a core-connector unit, and a second component at least partially covering the core structure, wherein a circular collar is unitarily formed with the core-connector unit between the connector and core structure.

Abstract: A handle for a personal care implement includes a connector for repeatedly attaching and detaching a head to and from the handle. The handle has a longitudinal extension extending between a proximal end closest to the head and a distal end opposite to the proximal end, the handle further having a core structure, the core structure and the connector being unitarily made to form a core-connector unit. A second component at least partially covers the core structure, wherein the core structure has a longitudinal extension extending along the longitudinal extension of the handle, the core structure comprising at least two protrusions interlocking with the second component.

Abstract: A handle for a personal care implement includes a core structure as a first component, a second component made from a polymeric material comprising a polymer base material and a filler material, the second component at least partially covering the core structure, and a third component at least partially covering the core structure and/or the second component.

Abstract: A filament for an oral care implement has a longitudinal axis and a substantially cross-shaped cross-sectional area extending in a plane substantially perpendicular to the longitudinal axis. The cross-shaped cross-sectional area has four projections and four channels. The projections and channels are arranged in an alternating manner. Each channel has a concave curvature formed by neighboring and converging projections. The concave curvature has a radius, and each projection is end-rounded thereby forming a curvature. The curvature has a diameter, and the ratio of the diameter of the curvature of the projection to the radius of the curvature of the channel is from about 0.2 to about 1.5.

Abstract: A plurality of mass-produced versatile toothbrush refills for a secure removable engagement with a plurality of mass-produced non-identical toothbrush handles including handles of electric toothbrushes and handles of manual toothbrushes. Each of the refills comprises: a proximal and distal ends opposite thereto and a longitudinal axis extending between the proximal end and the distal end; a cleaning head with a plurality of cleaning elements adjacent to the distal end; and a neck extending from the cleaning head and terminating at the proximal end. The neck has a wall defining a cavity for receiving a handle engagement structure of any one of the toothbrush handles. The refill includes a refill engagement structure configured to form the secure removable engagement with the handle engagement structure.

Abstract: A head for an oral care implement has an outer rim and an inner portion. The head comprises at least one tuft of filaments of a first type and at least one tuft of filaments of a second type. The at least one tuft of the first type is arranged at the inner portion of the head and comprises a plurality of filaments, each filament having a longitudinal axis and a substantially circular cross-sectional area extending in a plane substantially perpendicular to the longitudinal axis. The at least one tuft of the second type is arranged at the outer rim of the head and comprises a plurality of filaments, each filament having a longitudinal axis and a substantially cross-shaped cross-sectional area extending in a plane substantially perpendicular to the longitudinal axis, the cross-shaped cross-sectional area having four projections and four channels, the projections and channels being arranged in an alternating manner.

Abstract: A head for an oral care implement comprises at least one tooth cleaning element of a first type and at least one tooth cleaning element of a second type. The at least one tooth cleaning element of the first type has a length extension along a longitudinal axis being about 1 mm to about 2 mm shorter than the length extension of the at least one tooth cleaning element of the second type along its longitudinal axis. The at least one tooth cleaning element of the first type is a tuft of a first type comprising a plurality of filaments, each filament having a longitudinal axis and a substantially cross-shaped cross-sectional area extending in a plane substantially perpendicular to the longitudinal axis. The cross-shaped cross-sectional area has four projections and four channels, the projections and channels being arranged in an alternating manner. The at least one tuft of the first type has a packing factor within a range from about 40% to about 55%, preferably from about 45% to about 50%.

Abstract: A head for an oral care implement comprises at least one tooth cleaning element of a first type and at least one tooth cleaning element of a second type. The at least one tooth cleaning element of the first type has a length extension along a longitudinal axis being about 1 mm to about 2 mm longer than the length extension of the at least one tooth cleaning element of the second type along its longitudinal axis. The at least one tooth cleaning element of the first type is a tuft of a first type comprising a plurality of filaments. Each filament has a longitudinal axis and a substantially cross-shaped cross-sectional area extending in a plane substantially perpendicular to the longitudinal axis. The cross-shaped cross-sectional area has four projections and four channels, the projections and channels being arranged in an alternating manner. The at least one tuft of the first type has a packing factor within a range from about 40% to about 55%, preferably from about 45% to about 50%.

Abstract: A handle for an electrically operated personal-care implement comprises a housing defining an inner cavity accommodating a power source and a motor comprising an eccentric weight for operating the personal-care implement. The motor is mounted on a swivel-mounted carrier. The housing has a longitudinal extension and a substantially circular cross-sectional area extending substantially perpendicular to the longitudinal extension and having a diameter from about 12 mm to about 20 mm, more specifically from about 13 mm to about 17 mm, and even more specifically about 15 mm.

Abstract: A handle for a personal-care implement comprises a housing having an inner cavity, the housing having a proximal end closest to a head repeatably attachable to and detachable from the handle, and a distal end, the distal end being opposite the proximal end; a swivel-mounted connector-pressure-sensor unit unitarily made as one piece, the connector-pressure sensor unit comprising a connector extending through an opening at the proximal end of the housing, and a pivot lever accommodated within the inner cavity of the housing and extending towards the distal end of the housing, the pivot lever being attached to the housing via a pivot axis.

Abstract: A replaceable head for removeable connection with a manual toothbrush handle, the head comprising: a first end, a second end opposite to the first end, a neck having a hollow portion therein and extending between the first end and the second end, and a bristle carrier disposed adjacent to the first end. The second end comprises a second-end opening leading into the hollow portion of the neck and terminates with a second-end edge comprising a chamfered surface structured and configured to mate with a corresponding chamfered surface of the handle when the head is connected thereto. The neck's hollow portion is defined by an inner wall comprising a recess for receiving a spring-loaded ball associated with a connector of the handle.