Toothbrush
First Claim
1. A toothbrush comprising a block head having a brush portion composed of tufts embedded on the block head, a handle and a neck portion connecting said block head with the handle, wherein a first group part of said tufts are made up of filaments with a polygonal cross section, and a second group of tufts are made up of sheath-core structural filaments whose core material is covered with sheath material so that the cross section thereof is concentric circles.
4 Assignments
0 Petitions
Accused Products
Abstract
In the case of conventional toothbrushes whose bristles have all needlelike tapering tips, the bristles near the tips become too thin and too flexible. In the case of toothbrushes whose bristle ends are all round or hemispherical, it is difficult to get into the spaces between teeth or boundary spaces between teeth and gums.
Thus, it is difficult for conventional toothbrushes to clean up in every nook and corner in the mount. A toothbrush comprising a block head having brush portion, a handle and a neck portion connecting the block head with the handle, wherein a part of the tufts of the brush portion are made up of filament with polygonal cross section, and the rest of the tufts are made up of sheath-core structural filament whose core material is covered with sheath material such that the filaments are circular in cross-section, with the sheath material being concentric to the core material.
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Citations
10 Claims
- 1. A toothbrush comprising a block head having a brush portion composed of tufts embedded on the block head, a handle and a neck portion connecting said block head with the handle, wherein a first group part of said tufts are made up of filaments with a polygonal cross section, and a second group of tufts are made up of sheath-core structural filaments whose core material is covered with sheath material so that the cross section thereof is concentric circles.
Specification