Toothbrush and method of manufacturing it
First Claim
1. A toothbrush having a handle portion and a neck portion connecting the handle portion with a head, said head having a brushing side and a rear side opposite thereto, said brushing side including a plurality of bristle tufts for cleaning the teeth, said tufts being attachable in the head through tufting apertures using an anchor, with each tufting aperture being assigned a blind-end hole having sidewalls and a bottom, wherein provision is made for a chamfer or radius in the transition area between the bottom and the sidewalls, with a cross-sectional area of the head between a first bottom and the rear side differing from a cross-sectional area of the head between a second bottom and the rear side, and said first bottom and said second bottom being arranged in the head in such a way that the minimum distance y between the first bottom and the rear side as well as the minimum distance x between the second bottom and the rear side are each in the range of between about 0.5 and about 2.5 mm.
1 Assignment
0 Petitions
Accused Products
Abstract
A toothbrush having a handle portion and a neck portion connecting the handle portion with a head. The head has a brushing side and a rear side. The brushing side includes a plurality of bristle tufts for cleaning the teeth. The tufts are attachable in the head through tufting apertures, with each tufting aperture being assigned a blind-end hole having sidewalls and a bottom. The cross-sectional area of the head between a first bottom and the rear side differing from a cross-sectional area of the head between a second bottom and the rear side. The first bottom and the second bottom are arranged in the head in such a way that the minimum distance between the first bottom and the rear side as well as the minimum distance between the second bottom and the rear side are each in the range of between about 0.5 and about 2.5 mm.
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Citations
12 Claims
- 1. A toothbrush having a handle portion and a neck portion connecting the handle portion with a head, said head having a brushing side and a rear side opposite thereto, said brushing side including a plurality of bristle tufts for cleaning the teeth, said tufts being attachable in the head through tufting apertures using an anchor, with each tufting aperture being assigned a blind-end hole having sidewalls and a bottom, wherein provision is made for a chamfer or radius in the transition area between the bottom and the sidewalls, with a cross-sectional area of the head between a first bottom and the rear side differing from a cross-sectional area of the head between a second bottom and the rear side, and said first bottom and said second bottom being arranged in the head in such a way that the minimum distance y between the first bottom and the rear side as well as the minimum distance x between the second bottom and the rear side are each in the range of between about 0.5 and about 2.5 mm.
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12. A toothbrush having a handle portion and a neck portion connecting the handle portion with a head, said head having a brushing side and a rear side opposite thereto, said brushing side including a plurality of bristle tufts for cleaning the teeth, said tufts being attachable in the head through tufting apertures using an anchor, with each tufting aperture being assigned a blind-end hole having sidewalls and comprising a first portion having a first bottom and a second portion having a second bottom, wherein the first portion is longer and wider than the second portion, and wherein provision is made for a chamfer or radius in the transition area between the first bottom and the sidewalls, with a cross-sectional area of the head between the first bottom and the rear side differing from a cross-sectional area of the head between the second bottom and the rear side, and said first bottom and said second bottom being arranged in the head in such a way that the minimum distance y between the first bottom and the rear side as well as the minimum distance x between the second bottom and the rear side are each in the range of between about 0.5 and about 2.5 mm.
Specification