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US 7,354,112 B2Granted
Toothbrush and process for producing such a toothbrush
AssigneeTrisa Holding AG
InventorsFranz Fischer, Reto Strähler
Life of this patent
Estimating the term…
Abstract
The invention relates to a toothbrush having a handle and a head part, on which bristle filaments and at least one flexible cleaning element are arranged. The at least one flexible cleaning element is arranged on a carrier element, which consists of a hard material, and is connected to the head part. The invention also relates to a process for producing such a toothbrush.
Claims50
A toothbrush, comprising:
- a handle and a head part with bristle filaments and a flexible structure, wherein the flexible structure is attached to a plate-like carrier element which has a front side and a rear side, bristle receiving cutouts are provided in the carrier element and/or in the flexible structure, the carrier element being of a harder material than that of the flexible structure and connected to the head part such that the rear side faces the head part, wherein the bristle filaments are guided through the bristle receiving cutouts, and rear ends of the bristle filaments are melted, welded or adhesively bonded on the rear side of the carrier element or the flexible structure.
A process for producing a toothbrush comprising:
- providing a handle and a head part;
- providing a carrier element having a front side and a rear side;
- attaching a flexible structure to the carrier element, wherein the carrier element is made from a harder material than that of the flexible structure;
- providing a plurality of bristle filaments and guiding them through bristle receiving cutouts in the carrier element and/or in the flexible structure;
- fastening rear ends of the bristles on the rear side of the carrier element and/or the flexible structure by melting, welding or adhesive bonding.
2 more elements
A toothbrush, comprising:
- a handle and a head part with bristle filaments and a flexible structure made of a soft component, wherein the flexible structure is attached to a plate-like carrier element which has a front side and a rear side, bristle receiving cutouts are provided in the carrier element and/or in the flexible structure, the carrier element being of a harder material than that of the flexible structure and connected to the head part such that the rear side faces the head part, wherein the carrier element and the flexible structure are formed in a two-component injection molding process to provide an unreleasable connection between the soft flexible structure and the harder carrier element, the bristle filaments are guided through the bristle receiving cutouts, and rear ends of the bristle filaments are melted on the rear side of the carrier element or the flexible structure to form a bristle coating on the rear side of the carrier element and/or the flexible structure.
A toothbrush, comprising:
- a handle and a head part with bristle filaments and a flexible structure, wherein the flexible structure is attached to a plate-like carrier element which has a front side and a rear side, bristle receiving cutouts are provided in the carrier element and/or in the flexible structure, the carrier element being of a harder material than that of the flexible structure and connected to the head part such that the rear side faces the head part, wherein bristle filaments are guided through the bristle receiving cutouts, and rear ends of the bristle filaments are melted, welded or adhesively bonded on the rear side of the carrier element or the flexible structure,
- wherein the contacting locations between the head part and the carrier element are covered with flexible material, and flexible material seals the contacting locations against entry of water.
Dependencies are inferred from the claim text.