Brush Head And Method And Tool For Producing Same
AssigneeBraun GmbH
InventorsAndreas Birk, Lars Foerster, Ulrich Pfeifer, Klaus Amsel, Guenther Alschweig
Life of this patent
Estimating the term…
Abstract
A brush head, particularly a toothbrush head, may have a plurality of cleaning elements, in particular bristle tufts, which are anchored by an end section in a brush carrier, wherein the cleaning elements may be cast with positive engagement in blind-hole shaped retaining recesses. For producing such a brush head different cleaning elements, such as bristle tufts may be fused by heat and may be placed in a mold cavity to be over-molded.
Claims20
A method for producing a brush head in which at least two different cleaning elements selected from the group consisting of different types of cleaning elements, distinctive cleaning elements of the same type and a combination thereof are embedded at one of their ends at least partially in a bristle carrier, wherein the ends are fused by heat before embedding, wherein different amounts of heat are supplied to each of the at least two different cleaning elements.
The method according to the preceding claim, wherein, the punching tool has a flat or a structured surface.
A device for producing a brush head in which at least two different cleaning elements selected from the group consisting of different types of cleaning elements, distinctive cleaning elements of the same type and a combination thereof are embedded at one of their ends at least partially in a bristle carrier, comprising a hot-gas device for applying hot gas to one end of the at least two different cleaning elements, wherein the hot-gas device comprises a multiplicity of nozzles for applying varying flows of hot gas.
A device for producing a brush head in which at least two different cleaning elements selected from the group consisting of different types of cleaning elements, distinctive cleaning elements of the same type and a combination thereof are embedded at one of their ends at least partially in a bristle carrier, comprising an infrared radiation device for applying infrared radiation to one end of the at least two different cleaning elements, wherein the infrared radiation device comprises a plurality of reflectors for applying varying degrees of infrared radiation.
Dependencies are inferred from the claim text.