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Title:
TOOTHBRUSH
Document Type and Number:
WIPO Patent Application WO/2021/106870
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a toothbrush that can contribute to improvement of hitting comfort and cleaning power. The present invention has: a head part (3) in which a plurality of bristle bundles are planted in a bristle transplanting surface (3a); and a handle body extending from the head part (3). The bristle bundle has: an outer bristle bundle (20) disposed on the outermost circumference; and an inner bristle bundle (30) disposed inside the outer bristle bundle. The outer bristle bundle has two half-bristle bundles (21a, 21b) that are formed by folding, into two parts, tip-branched bristles (22) having tips of the bristles branched on both sides in the longitudinal direction, and have different bristle lengths.

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WO/2018/203783METHOD OF PRODUCING A HOLLOW SYNTHETIC BRISTLE, A HOLLOW SYNTHETIC BRISTLE AND A PAINT BRUSH COMPRISING SUCH HOLLOW SYNTHETIC BRISTLES
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Inventors:
HORIKOSHI RYO (JP)
KIMOTO YUYA (JP)
MORI SAYA (JP)
Application Number:
PCT/JP2020/043668
Publication Date:
June 03, 2021
Filing Date:
November 24, 2020
Export Citation:
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Assignee:
LION CORP (JP)
International Classes:
A46D1/00; A46B9/04; A46D1/05
Domestic Patent References:
WO2016199853A12016-12-15
Foreign References:
JP2013000336A2013-01-07
JP2016209097A2016-12-15
JP2007289265A2007-11-08
Attorney, Agent or Firm:
TAZAKI Akira et al. (JP)
Download PDF:
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