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US 11,219,513 B2Granted
Brush head for a toothbrush and method for producing the brush head
AssigneeTrisa Holding AG
InventorsFranz Fischer, Peter Gross
Life of this patent
Estimating the term…
Abstract
The brush head of the toothbrush has filaments that are pointed at one end and led through clearances in the bristle carrier. These filaments have a length of about 10-20 mm. The tips of the pointed filaments produce a height profile other than that of a plane and the ends of the pointed filaments that are remote from the tips are melted.
Claims29
A brush head for an electric toothbrush, comprising:
- a bristle carrier that can rotate back and forth about an axis of rotation running perpendicularly to the bristle carrier;
- conventional bristles with a substantially constant nominal diameter and rounded-off tips arranged in clusters on the bristle carrier;
- pointed filaments with pointed tips arranged on the bristle carrier in clusters with an arcuate shape;
- wherein the clusters with an arcuate shape are arranged in one or more groups forming an arc of a circle or a circle.
1 more element
A brush head for an electric toothbrush, comprising
- a bristle carrier that can rotate back and forth about an axis of rotation running perpendicularly to the bristle carrier;
- the bristle carrier having a mixed filament arrangement comprising:
- conventional bristles with a substantially constant nominal diameter and rounded-off tips arranged in clusters comprising a plurality of conventional bristles;
- and
- pointed filaments with pointed tips arranged in clusters comprising a plurality of pointed filaments;
- wherein the pointed filaments are arranged on the bristle carrier in such a way that, during operation of the electric toothbrush, their tips cover at most a predetermined maximum path of dmax=5 mm.
3 more elements
Dependencies are inferred from the claim text.