WO2005087045A1 - Brosse a dents pourvue de poils en forme d'aiguilles - Google Patents

Brosse a dents pourvue de poils en forme d'aiguilles Download PDF

Info

Publication number
WO2005087045A1
WO2005087045A1 PCT/KR2004/001081 KR2004001081W WO2005087045A1 WO 2005087045 A1 WO2005087045 A1 WO 2005087045A1 KR 2004001081 W KR2004001081 W KR 2004001081W WO 2005087045 A1 WO2005087045 A1 WO 2005087045A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
toothbrush
shaped bristles
shaped
bristles
Prior art date
Application number
PCT/KR2004/001081
Other languages
English (en)
Inventor
Young-Jun Kwon
Sung-Wook Kwon
Sung-Hwan Kwon
Original Assignee
Best Whasung Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=35064507&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2005087045(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Best Whasung Co., Ltd. filed Critical Best Whasung Co., Ltd.
Publication of WO2005087045A1 publication Critical patent/WO2005087045A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/16—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by wires or other anchoring means, specially for U-shaped bristle tufts
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0276—Bristles having pointed ends
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the present invention relates, in general, to toothbrushes with needle-shaped bristles and, more particularly, to a toothbrush with needle-shaped bristles having improved cleaning ability.
  • a toothbrush with needle-shaped bristles means a toothbrush in which bristles each having a needle- shaped end are set, as shown in FIG. 1.
  • several prior arts were proposed in Korean Patent Registration No. 130932, in Korean Utility Model Registration No. 114700, and in Korean Patent Registration No. 261658.
  • methods for manufacturing a needle-shaped bristle there are a method of immersing a bristle in an acid or alkali chemical to dissolve its end, a method of mechanically grinding an end of a bristle, and a method of using both above-mentioned methods jointly.
  • the method of immersing a bristle in the acid or alkali chemical is useful to achieve a greater reduction in diameter of an end of the bristle.
  • the conventional toothbrushes with needle-shaped bristles each have superior ability in penetration into gaps between teeth or between the teeth and the gingivae. As well, because ends of the needle-shaped bristles are soft, the gingivae of a user are prevented from being damaged. Therefore, recently, toothbrushes with needle- shaped bristles have become popular with consumers. However, the conventional toothbrushes with needle- shaped bristles are inferior in cleaning ability, compared with toothbrushes with typical bristles. The reason is that a contact area between the teeth and needle-shaped ends of the needle-shaped bristles is limited and, in addition, the needle-shaped ends lack stiffness. Furthermore, the conventional toothbrushes with needle-shaped bristles are problematic in that because the needle-shaped bristles' ends, having a narrow diameter, are easily worn or deformed, the life spans of the toothbrushes are reduced.
  • FIG. 1 is a sectional view of a needle-shaped bristle;
  • FIG. 2 is a plan view showing a conventional toothbrush;
  • FIG. 3 is a plan view of a toothbrush body of a toothbrush, according to an embodiment of the present invention;
  • FIG. 4 is a plan view of a toothbrush body of a toothbrush, according to another embodiment of the present invention;
  • FIG. 5 is a plan view of a toothbrush body of a toothbrush, according to a further embodiment of the present invention.
  • an object of the present invention is to provide a toothbrush with needle-shaped bristles having improved cleaning ability.
  • Another object of the present invention is to provide a toothbrush with needle-shaped bristles which has a long life span.
  • a further object of the present invention is to provide a toothbrush with needle- shaped bristles in which the efficiency of setting bristles in the toothbrush is enhanced.
  • the present invention provides a toothbrush with needle-shaped bristles, including: a plurality of rectangular setting grooves each having a minor axis from 1.5 to 2.5mm in length and a major axis from 2.5 to 4.0mm in length and spaced apart from each other at intervals from 1.0 to 3.0mm; and forty-five to eighty needle-shaped bristles set in each of the rectangular setting grooves at a depth of 4.0 to 5.0mm.
  • the needle-shaped bristles each have an end point from 0.01 to 0.02mm in diameter and a tapered part from 4.0 to 10.0mm in length.
  • the toothbrush according to the present invention has cleaning ability superior to that of conventional toothbrushes, in spite of having similar penetration ability to the conventional toothbrushes. Furthermore, the life span of the needle-shaped bristles is markedly enhanced. In addition, because a high number of needle-shaped bristles is set in each setting groove, efficiency in setting the needle-shaped bristles in the setting grooves is markedly increased.
  • FIG. 1 is a plan view of a toothbrush body, according to an embodiment of the present invention.
  • each of rectangular setting grooves has a minor axis of 1.5-2.5mm in length and a major axis of 2.5-4.0mm in length. Each interval between the rectangular setting grooves ranges from 1.0 to 3.0mm.
  • FIG. 4 is a plan view of a toothbrush body of a toothbrush, according to another embodiment of the present invention.
  • setting grooves are not rectangular, but are rounded in each corner. Due to this feature, difficulty occurring in setting bristles into grooves is markedly reduced.
  • an extended support pin having a shape similar to that of the rectangular setting groove must be used to fasten the needle-shaped bristles into the rectangular setting groove. Therefore, in the case in which a high number of needle-shaped bristles is fastened in the rectangular setting groove by using the extended support pin, lengths of exposed parts of the needle-shaped bristles set in the toothbrush body are different from each other, unlike the conventional toothbrush having small circular setting grooves .
  • FIG. 5 is a plan view of a toothbrush body of a toothbrush, according to a further embodiment of the present invention.
  • setting grooves are not rectangular, but are elliptical.
  • the elliptical setting grooves provide the same effect as those of the setting grooves shown in FIG. 4.
  • Each interval between the elliptical setting grooves ranges from 1.0 to 3.0mm.
  • a diameter of an end point of each of the needle- shaped bristles used for the present invention ranges from 0.01 to 0.02mm.
  • a length of a tapered part of each of -the needle-shaped bristles used for the present invention ranges from 4.0 to 10.0mm.
  • the diameter of the end point of the needle-shaped bristle is less than the above- mentioned range, difficulty in the manufacture of the needle-shaped bristle exists and, in addition, the desired cleaning ability is not obtained. If the diameter of the end point is greater than the above-mentioned range, the penetration ability of the needle-shaped bristles is reduced. If the length of the tapered part of each of the needle-shaped bristles is less than the above-mentioned range, the hardness of the needle-shaped bristle increases excessively. Thus, the gingivae of the user may be damaged by the needle-shaped bristles while brushing the teeth. If the length of the tapered part is greater than the above- mentioned range, the desired cleaning ability is not obtained.
  • an appropriate range of a depth of setting the needle-shaped bristles in each setting groove is from 4.0 to 5.0mm. If the depth of setting the needle-shaped bristles in the setting groove is less than the above-mentioned range, the needle-shaped bristles may be undesirably missing. If the depth of setting the needle-shaped bristles in the setting groove is greater than the above-mentioned range, the thickness of the toothbrush body must be excessively increased.
  • the appropriate number of needle-shaped bristles 'set in each setting groove ranges from forty-five to eighty.
  • ends opposite to the tapered ends are attached to a head part of the toothbrush through an ultrasonic process after being heat-welded.
  • the ends opposite to the tapered ends may be attached to the head part by a bonding agent.
  • Sixty needle- shaped bristles each of which is made of a PBT material and has an end point of 0.015mm diameter and a 7mm tapered part, are set at a depth of 4.5mm in each of the setting grooves each of which has a minor axis of 2.0mm and a major axis of 4.0mm and which are spaced 2.5mm apart. At this time, if the needle-shaped bristles are unevenly set in each setting groove, ends of excessively long needle-shaped bristles are cut off through the cutting process.
  • toothbrush number one The product manufactured through the above-mentioned process is called "toothbrush number one" (Example 2)
  • a toothbrush called “toothbrush number two” is manufactured in the same manner as that described for the toothbrush number one of the first manufacturing example, but a toothbrush body having the same structure as that of the toothbrush body of FIG. 4 is used, unlike toothbrush number one. In this case, needle-shaped bristles are relatively evenly set, so that a separate cutting process is not required.
  • toothbrush number three A toothbrush called “toothbrush number three” is manufactured in the same manner as that described for toothbrush number two of the second manufacturing example, but each interval between setting grooves is 1.5mm, unlike toothbrush number two.
  • toothbrushes called “toothbrush number four” is manufactured in the same manner as that described for toothbrush number two of the second manufacturing example, but forty needle-shaped bristles are set in each setting groove, unlike toothbrush number two.
  • Comparative Example 3 A toothbrush called “toothbrush number fifth” is manufactured in the same manner as that described for toothbrush number two of the second manufacturing example, but eighty-five needle-shaped bristles are set in each setting groove, unlike toothbrush number two.
  • Comparative Example 4 A toothbrush called “toothbrush number six” is manufactured in the same manner as that described for toothbrush number two of the second manufacturing example, but a length of a tapered part of each needle-shaped bristle is 3mm, unlike toothbrush number two.
  • toothbrushes (Comparative Example 5) A toothbrush called “toothbrush number seven" is manufactured in the same manner as that described for toothbrush number two of the second manufacturing example, but a toothbrush body has the same structure as that of the toothbrush body of FIG. 2 and a diameter of 1.5mm, and each interval between setting grooves is 1.2mm, unlike toothbrush number two.
  • Example 1 Fifty adult men and women used the toothbrushes, manufactured by the methods explained in the above- mentioned manufacturing examples, for fifteen days. Thereafter, preferences according to predetermined items were researched. The results are described in the following Table 1. [Table 1]

Landscapes

  • Brushes (AREA)

Abstract

La présente invention concerne une brosse à dents pourvue de poils en forme d'aiguilles. Cette brosse à dents comprend des rainures de positionnement rectangulaires (1) présentant, chacune, un axe mineur compris entre 1,5 et 2,5mm de longueur et un axe majeur compris entre 2,5 et 4,0mm de longueur, lesquelles rainures sont espacées les unes des autres à des intervalles compris entre 1,0 et 3,0mm. La brosse à dents comprend également des poils en forme d'aiguilles, lesquels présentent, chacun, une pointe d'extrémité de 0,01 à 0,02 mm de diamètre et une partie conique comprise entre 4,0 et 10,0mm de longueur. Quarante cinq des quatre vingt poils en forme d'aiguilles sont positionnés dans chacune des rainures de positionnement (1) rectangulaires à une profondeur de 4,0 à 5,0mm. La brosse à dents décrite dans cette invention présente une aptitude au nettoyage supérieure à celle des brosses à dents ordinaires, bien que sa capacité de pénétration soit similaire à celle des brosses à dents ordinaires.
PCT/KR2004/001081 2004-03-16 2004-05-11 Brosse a dents pourvue de poils en forme d'aiguilles WO2005087045A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20040017572 2004-03-16
KR10-2004-0017572 2004-03-16

Publications (1)

Publication Number Publication Date
WO2005087045A1 true WO2005087045A1 (fr) 2005-09-22

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ID=35064507

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/001081 WO2005087045A1 (fr) 2004-03-16 2004-05-11 Brosse a dents pourvue de poils en forme d'aiguilles

Country Status (2)

Country Link
KR (1) KR100666455B1 (fr)
WO (1) WO2005087045A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1962640A1 (fr) * 2005-12-22 2008-09-03 Best Whasung Co., Ltd. Soie aciculaire et procede de fabrication associe
US8042217B2 (en) 2004-11-02 2011-10-25 Colgate-Palmolive Company Toothbrush and method of making the same
WO2012096701A1 (fr) * 2011-01-12 2012-07-19 Colgate-Palmolive Company Accessoire d'hygiène buccodentaire
RU2502455C2 (ru) * 2009-07-31 2013-12-27 Бест Васон Ко., Лтд. Зубная щетка со щетинками игольчатой формы, усовершенствованная в отношении силы контакта с зубами и деснами и эффективности чистки зубов, а также способ ее изготовления
USD767281S1 (en) 2013-02-26 2016-09-27 Colgate-Palmolive Company Bristle bearing surface of a toothbrush head
US9788643B2 (en) 2011-09-14 2017-10-17 Colgate-Palmolive Company Toothbrush
US10244857B2 (en) 2016-08-29 2019-04-02 Colgate-Palmolive Company Oral care implement and filament for the same

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101741486B1 (ko) * 2015-11-02 2017-05-31 주식회사 케이앤케이 칫솔 헤드
EP3501335B1 (fr) 2017-12-20 2020-06-17 The Gillette Company LLC Brosse à dents
EP3524093A1 (fr) 2018-02-09 2019-08-14 The Gillette Company LLC Procédé de fabrication d'un instrument de soin buccal
US11659922B2 (en) 2018-09-03 2023-05-30 The Gillette Company, LLC. Head for an oral-care implement and a kit comprising such head
PL3616561T3 (pl) * 2018-09-03 2022-11-21 The Gillette Company Llc Główka do narzędzia do higieny jamy ustnej i zestaw zawierający taką główkę
EP3818904A1 (fr) 2019-11-06 2021-05-12 The Gillette Company LLC Poignée pour un instrument de soins personnels à commande électrique
KR102450463B1 (ko) * 2020-01-10 2022-10-05 주식회사 에드코스 헤드부의 교체가 가능한 전동 칫솔
USD957135S1 (en) 2020-07-02 2022-07-12 The Gillette Company Llc Toothbrush head
USD1014095S1 (en) 2020-07-02 2024-02-13 The Gillette Company Llc. Toothbrush
KR20220125940A (ko) 2021-03-08 2022-09-15 주식회사 제이앤케이헬스앤뷰티 칫솔

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0515834U (ja) * 1991-08-20 1993-03-02 東レ・モノフイラメント株式会社 歯ブラシ
JPH07284412A (ja) * 1994-04-15 1995-10-31 Taihei Kogyo Kk 歯ブラシ
WO1997042854A1 (fr) * 1996-05-14 1997-11-20 Kao Corporation Brosse a dents
US5926897A (en) * 1994-12-01 1999-07-27 The Procter & Gamble Company Toothbrush having bristles for interproximal cleaning

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0515834U (ja) * 1991-08-20 1993-03-02 東レ・モノフイラメント株式会社 歯ブラシ
JPH07284412A (ja) * 1994-04-15 1995-10-31 Taihei Kogyo Kk 歯ブラシ
US5926897A (en) * 1994-12-01 1999-07-27 The Procter & Gamble Company Toothbrush having bristles for interproximal cleaning
WO1997042854A1 (fr) * 1996-05-14 1997-11-20 Kao Corporation Brosse a dents

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8042217B2 (en) 2004-11-02 2011-10-25 Colgate-Palmolive Company Toothbrush and method of making the same
EP1962640A4 (fr) * 2005-12-22 2011-11-23 Best Whasung Co Ltd Soie aciculaire et procede de fabrication associe
EP1962640A1 (fr) * 2005-12-22 2008-09-03 Best Whasung Co., Ltd. Soie aciculaire et procede de fabrication associe
RU2502455C2 (ru) * 2009-07-31 2013-12-27 Бест Васон Ко., Лтд. Зубная щетка со щетинками игольчатой формы, усовершенствованная в отношении силы контакта с зубами и деснами и эффективности чистки зубов, а также способ ее изготовления
AU2011354717B2 (en) * 2011-01-12 2015-05-14 Colgate-Palmolive Company Oral care implement
RU2544139C1 (ru) * 2011-01-12 2015-03-10 Колгейт-Палмолив Компани Устройство для ухода за полостью рта
WO2012096701A1 (fr) * 2011-01-12 2012-07-19 Colgate-Palmolive Company Accessoire d'hygiène buccodentaire
US9445660B2 (en) 2011-01-12 2016-09-20 Colgate-Palmolive Company Oral care implement
US9788643B2 (en) 2011-09-14 2017-10-17 Colgate-Palmolive Company Toothbrush
US20180000237A1 (en) * 2011-09-14 2018-01-04 Colgate-Palmolive Company Toothbrush
USD767281S1 (en) 2013-02-26 2016-09-27 Colgate-Palmolive Company Bristle bearing surface of a toothbrush head
USD797459S1 (en) 2013-02-26 2017-09-19 Colgate-Palmolive Company Toothbrush head
US10244857B2 (en) 2016-08-29 2019-04-02 Colgate-Palmolive Company Oral care implement and filament for the same
US11445810B2 (en) 2016-08-29 2022-09-20 Colgate-Palmolive Company Oral care implement and filament for the same

Also Published As

Publication number Publication date
KR100666455B1 (ko) 2007-01-09
KR20060042059A (ko) 2006-05-12

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