Abstract: A dental cleaning implement such as a toothbrush, having longitudinally disposed first and second parts flexibly joined together. Between the first and second parts is a rotatable member such that when the implement bends the first parts adjacent to the member bear upon the member. The rotatable member has circumferentially disposed relatively softer and harder regions, so that as the member is rotated the parts can be caused to bear compressibly upon selected softer or harder regions.

Abstract: A toothbrush having a head which carries a dental cleaning tool, and a grip handle, the head and handle being disposed along a longitudinal head-handle axis, the toothbrush having a resiliently flexible structure which can resiliently bend under the action of toothbrushing pressure and having adjustment means comprising a longitudinally moveable stiffening member which can be moved longitudinally into greater or lesser engagement with the resiliently flexible structure.

Abstract: The present invention relates to a method of manufacturing a brush head comprising a brush head body carrying bristle bundles, in particular for tooth brushes, by way of injection molding, in which a first plastic component is injected into a first mold cavity for forming a bristle carrier, and ends of bristle filaments projecting into the first mold cavity are encompassed by the first plastic component. In order to guarantee a complete filling of the mold and a favorable reproduction of the mold cavity geometry, but to avoid at the same time a penetration of plastic mass into ducts in which the bristle filaments are held, it is suggested by the present invention that the bristle carrier manufactured during the first step is relocated into another mold cavity, which is larger than the bristle carrier, and which is filled with a hard component.

Abstract: A dental cleaning implement such as a toothbrush, having longitudinally disposed first and second parts flexibly joined together. Between the first and second parts is a rotatable member such that when the implement bends the first parts adjacent to the member bear upon the member. The rotatable member has circumferentially disposed relatively softer and harder regions, so that as the member is rotated the parts can be caused to bear compressibly upon selected softer or harder regions.

Abstract: A toothbrush having a head which carries a dental cleaning tool, and a grip handle, the head and handle being disposed along a longitudinal head-handle axis, the toothbrush having a resiliently flexible structure which can resiliently bend under the action of toothbrushing pressure and having adjustment means comprising a longitudinally moveable stiffening member which can be moved longitudinally into greater or lesser engagement with the resiliently flexible structure.

Abstract: The present invention relates to a method of manufacturing a brush head comprising a brush head body carrying bristle bundles, in particular for tooth brushes, by way of injection molding, in which a first plastic component is injected into a first mold cavity for forming a bristle carrier, and ends of bristle filaments projecting into the first mold cavity are encompassed by the first plastic component. In order to guarantee a complete filling of the mold and a favorable reproduction of the mold cavity geometry, but to avoid at the same time a penetration of plastic mass into ducts in which the bristle filaments are held, it is suggested by the present invention that the bristle carrier manufactured during the first step is relocated into another mold cavity, which is larger than the bristle carrier, and which is filled with a hard component.