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US 7,458,647 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.
Claims36
A toothbrush, comprising:
- a handle and a head part with bristle filaments and a flexible structure, a plate-like carrier element which has a front side and a rear side, bristle receiving cutouts are provided in the carrier element, the carrier element being of a harder material than that of the flexible structure and welded to the head part such that the rear side faces the head part, and bristle filaments are guided through the bristle receiving cutouts and the rear ends of the bristle filaments are melted, welded or adhesively bonded on the rear side of the carrier element, wherein a welding surface between the carrier element and the head part is kept free of the material of the flexible structure.
A toothbrush, comprising:
- a handle and a head part with bristle filaments and a flexible structure, a plate-like carrier element which has a front side and a rear side, bristle receiving cutouts are provided in the carrier element, the carrier element being of a harder material than that of the flexible structure and welded to the head part such that the rear side faces the head part, and bristle filaments are guided through the bristle receiving cutouts and the rear ends of the bristle filaments are melted, welded or adhesively bonded on the rear side of the carrier element, wherein a welding surface between the carrier element and the head part is kept free of the material of the flexible structure and non-welded locations between the head part and carrier element are used in order that the head part and the carrier element can be moved in relation to one another.
A toothbrush, comprising:
- a handle and a head part with bristle filaments and a flexible structure, a plate like carrier element which has a front side and a rear side, bristle receiving cutouts are provided in the carrier element, the carrier element being of a harder material than that of the flexible structure and welded to the head part such that the rear side faces the head part, and bristle filaments are guided through the bristle receiving cutouts and the rear ends of the bristle filaments are melted, welded or adhesively bonded on the rear side of the carrier element, a welding surface between the carrier element and the head part is kept free of the material of the flexible structure, wherein the flexible structure is provided on the head part and a corresponding injection point of the flexible structure is located on the rear side of the head part within a region defined by the welding surface.
A method for producing a toothbrush comprising:
- providing a handle and a head part with a flexible structure;
- providing a carrier element having a front side and a rear side;
- providing a plurality of bristle filaments and guiding them through bristle receiving cutouts in the carrier element;
- fastening rear ends of the bristles on a rear side of the carrier element and/or the flexible structure by melting, welding or adhesive bonding;
- and
- welding the carrier element to the head part, wherein a welding surface between the carrier element and the head part is kept free of material of the flexible structure.
3 more elements
A method 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 a rear side of the carrier element and/or the flexible structure by melting, welding or adhesive bonding;
- and
- welding the carrier element to the head part, wherein a welding surface between the carrier element and the head part is kept free of material of the flexible structure.
4 more elements
Dependencies are inferred from the claim text.