EP0955837B1 - Toothbrush - Google Patents
Toothbrush Download PDFInfo
- Publication number
- EP0955837B1 EP0955837B1 EP98956668A EP98956668A EP0955837B1 EP 0955837 B1 EP0955837 B1 EP 0955837B1 EP 98956668 A EP98956668 A EP 98956668A EP 98956668 A EP98956668 A EP 98956668A EP 0955837 B1 EP0955837 B1 EP 0955837B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bristles
- tufts
- head
- toothbrush according
- tuft
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- A46B9/045—Arranged like in or for toothbrushes specially adapted for cleaning a plurality of tooth surfaces simultaneously
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
- A46B5/026—Grips or handles having a nonslip section
-
- 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
- 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
- Toothbrushing and flossing are fundamental steps in achieving good oral hygiene.
- the practice of flossing has not met with widespread acceptance among the general populace even though it is acknowledged by the general populace that flossing is something that should be completed as part of good oral hygiene.
- people who floss oftentimes do not perform adequate flossing in hard to reach areas of the mouth.
- most commercially available toothbrushes clean the outer buccal face of teeth adequately, they fail to provide improved cleaning of plaque and debris from the gingival margin, interproximal areas, lingual surfaces and other hard to reach areas of the mouth.
- toothbrushes do not adequately clean the rear-most molars (e.g. wisdom teeth or second molars) is that the one or more tufts secured to the toothbrush head at a location most distal from the toothbrush handle are not angled towards a direction along which the head extends from the handle. As such, these tufts cannot extend far enough past the end of the head of the toothbrush to sufficiently clean the molar teeth in the back of the mouth.
- molars e.g. wisdom teeth or second molars
- U.S. 5,628,082, U.S. 5,446,940, which form, the preamble of present claim 1, and FR 2,624,360 disclose toothbrushes including a most distal tuft which is angled in a direction away from the handle. However, such articles do not also have a tuft angled in the opposite direction for enhanced interdental cleaning.
- a toothbrush having a head with a frontal free end and a rearward section followed by a handle, comprising tufts of bristles arranged in longitudinal rows on the rearward section of the head and having different lengths, with tufts of bristles having either a first greater length or a second smaller length, with tufts of bristles of the first and second length being provided in every longitudinal row and adjacent tufts of bristles of a longitudinal row alternatingly having the first and the second length, characterized in that tufts of bristles in a longitudinal row are tilted in a first direction (D) towards the free end of the head and tufts of bristles of another longitudinal row are tilted towards a second direction opposite of the first direction (D) and forming an acute angle with the surface of the head, and by a further tuft of bristles being secured to the frontal free end of the head and being tilted substantially only towards
- a second one of the tufts is tilted towards the handle, and a third one of the tufts is angled at an acute angle relative to the imaginary line.
- the second tuft has a characteristic which differs from the third tuft, the characteristic being length or cross-section.
- a toothbrush which includes a handle, a head extending from the handle, and a plurality of tufts of bristles secured to the head. Two of the tufts are each at an acute angle relative to an imaginary line which is tangent to or co-planar with a surface of the head through which the two tufts are secured to the head. A first one of the tufts is angled in a first direction towards the handle, and a second one of the tufts is angled in a second direction opposite the first direction.
- the two tufts have a different characteristic from each other, said characteristic being length, cross-section, and combinations thereof.
- angled tufts which vary in their length, cross-section or combinations thereof, allows such angled tufts to clean more than one part of the teeth. For example, one type of angled tuft will clean the buccal face of teeth while another type of angled tuft will clean the interproximal areas of the teeth.
- these tufts can clean all areas of the teeth (e.g. the outer buccal face, gingival margin, interproximal areas, lingual surfaces and rearward most molars) properly.
- a toothbrush which includes a handle, a head extending from the handle, and, first and second tufts of bristles secured to the head.
- the tufts each are at an acute angle relative to an imaginary line which is tangent to or co-planar with a surface of the head through which the tufts are secured to the head.
- the first tuft is angled in a first direction towards the handle and the second tuft is angled in a second direction opposite the first direction, the tufts differing in cross-section.
- a toothbrush 10 includes a handle portion 12 and a head portion 14 which extends from the handle in a direction D.
- the overall length of toothbrush 10 is preferably about 19.6 cm. (about 7.7) inches while the width of head 14 at its widest portion is preferably about 1.3 cm. (about 0.5 inches).
- a main portion 16 of handle 12, and head 14 are made of a unitary piece of polypropylene. Remaining portions of handle 12, including thumb gripping portion 18, optional Trademark 24 (preferably about 2.1 cm.
- finger gripping portion 20 are preferably made of a thermoplastic elastomer, preferably kraton rubber (a hydrogenated or unhydrogenated oil filled block co-polymer of styrene and butadiene or isoprene having a shore A hardness of between about 5 and about 70).
- Thumb gripping portion 18 and a portion of finger gripping portion 20 have a series of seventeen raised ribs 22 which aid in the gripability of the handle.
- Ribs 22 are preferably 0.13 cm. (.05 inches) in width.
- a plurality of tufts 26 of bristles are secured to head 14 of the toothbrush.
- Each tuft is made up of a large number of bristles, and all of the bristles are preferably end-rounded.
- a first type of tuft, type 28 is made up of bristles formed of poly-butylene-terephthalate (PBT) with an abrasive such as kaolin clay particles mixed throughout the PBT. These bristles are between about .013 to .023 cm. (about .005 to .009 inches) in diameter, preferably .018 cm. (.007 inches) in diameter. The length of these bristles, measured from surface 30 of head 14, is about 1.18 cm. (.440 inches).
- the cross-sectional tufted area for tuft 28 is about .2406 cm. 2 (about 0.0373 square inches), providing a tuft volume measured from the head surface of about .2687 cm.
- a second type of tuft, type 32 is made up of nylon IndicatorsTM type bristles which are formed of 6.12 nylon and colored blue on their external surface. As is well known in the art, the blue coloring on these bristles is slowly worn away as the brush is used over time to indicate the extent to which the toothbrush is worn. These bristles are between about .013 to .023 cm. (about .005 to .009 inches) in diameter, preferably .018 cm. (.007 inches) in diameter. The length of these bristles, measured from surface 30 of head 14, is about .889 cm. (about .350 inches). The cross-sectional area of each tuft 32 is about .0261 cm. 2 (about 0.0045 square inches). As shown in FIG. 6, type 32 tufts have a round cross-section. There are between 8 and 12 type 32 tufts secured to head 14.
- a third type of tuft, type 34 is made up of bristles formed of PBT with an abrasive such as kaolin clay particles mixed throughout the PBT. These bristles are between about .013 to .023 cm. (about .005 to .009 inches) in diameter, preferably .018 cm. (.007 inches) in diameter. The length of these bristles, measured from surface 30 of head 14, is about 1.18 cm. (about .440 inches). The cross-sectional area of each tuft 34 is about .0177 cm. 2 (about 0.0027 square inches). There are between eight and twelve type 34 tufts secured to head 14. As shown in FIG. 6, type 34 tufts are rectangular in shape with rounded ends.
- a fourth type of tuft, type 36 is made up of bristles formed of PBT with an abrasive such as kaolin clay particles mixed throughout the PBT. These bristles are between about .013 to .023 cm. (about .005 to .009 inches) in diameter, preferably .018 cm. (.007 inches) in diameter. The length of these bristles, measured from surface 30 of head 14, is about 1.12 cm. (about .440 inches). The cross-sectional area of each tuft 36 is about .0261 cm. 2 (about 0.0040 square inches). There are between four and six type 36 tufts secured to head 14. As shown in FIG. 6, type 36 tufts are rectangular in shape with rounded ends, and are wider across the head than type 34 tufts.
- tuft type 28 has a cross-section which is more than four times as large as any other tuft secured to head 14.
- any of the bristles attached to head 14 could be made from, for example, PBT with or without an abrasive such as kaolin clay, 6.12 nylon with or without an abrasive, or nylon IndicatorTM material with or without an abrasive.
- the bristles within a tuft and between tufts can have varying lengths, diameters, cross-sectional shapes, cross-sectional areas, colors and be made of differing materials.
- all of the tufts on head 14 are angled either towards direction D or towards the direction opposite of direction D by preferably less than about 81 degrees, more preferably between about 69 degrees to about 81 degrees, and most preferably by about 75 degrees, relative to an imaginary straight line 40 which is tangent to surface 30 of head 14. If surface 30 was flat, rather than curved, then line 40 would be co-planar with surface 30.
- Two outer rows of tufts 42 are angled towards direction D away from handle 12.
- An inner row of tufts 44 are angled opposite direction D towards handle 12 with the exception of large tuft 28 which is tilted towards direction D away from handle 12.
- Toothbrush 10 can be made by the following process which is generally understood by those skilled in the art.
- Each of the tufts of bristles are formed by gathering together a desired amount of bristles of a selected material, length and diameter.
- the tufts are then inserted into apertures in part of a mold of an injection molding machine.
- An end of the tuft which is or will project into the mold cavity is then melted to join the bristles together in a fused mass or ball at that end of the tuft.
- the mold part bearing the tufts is then joined with another portion of the mold which together define a cavity used to form main portion 16 of the toothbrush.
- the fused masses of the tufts are located just within the cavity.
- Polypropylene is then injected into the cavity to form portion 16 of toothbrush 10.
- the polypropylene is then cooled at which point the partially finished toothbrush is moved to a second injection molding station.
- the cooled, hardened polypropylene secures the fused masses of the tufts to head 14 of the toothbrush.
- the partially finished brush is put into a second mold having cavities to form the thumb gripping portion 18, trademark 24 and finger gripping portion 20.
- a thermoplastic elastomer is then injected into the mold after which the elastomer is cooled and finished toothbrush 10 is removed from the mold. The toothbrush is then packaged.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Brushes (AREA)
Description
Claims (17)
- A toothbrush (10) having a head (14) with a frontal free end and a rearward section followed by a handle (12), comprising tufts of bristles (32, 34, 36, 38) arranged in longitudinal rows (42, 44) on the rearward section of the head (14) and having different lengths, with tufts of bristles having either a first greater length or a second smaller length, with tufts of bristles (32, 34, 36, 38) of the first and second length being provided in every longitudinal row (42, 44) and adjacent tufts of bristles (32, 34, 36, 38) of a longitudinal row (42, 44) alternatingly having the first and the second length, characterized in that tufts of bristles (32, 34) in a longitudinal row (42) are tilted in a first direction (D) towards the free end of the head (14) and tufts of bristles (36, 38) of another longitudinal row (44) are tilted towards a second direction opposite of the first direction (D) and forming an acute angle with the surface (30) of the head (14), and by a further tuft of bristles (28) being secured to the frontal free end of the head (14) and being tilted substantially only towards the first direction (D) and having the first greater length.
- The toothbrush of claim 1, characterized in that all tufts of bristles (32, 34, 36, 38) of a longitudinal row (42, 44) alternatingly have the first and the second length.
- The toothbrush according to claim 1 or 2, characterized in that all tufts of bristles (32, 34, 36, 38) of every longitudinal row (42, 44) alternatingly have the first and the second length.
- The toothbrush according to any of the preceding claims, characterized in that tufts of bristles (32, 34, 36, 38) arranged in the longitudinal rows (42, 44) form an angle of less than approximately 81 degrees with the surface (30) of the head (40).
- The toothbrush according to any of the preceding claims, characterized in that the further tuft of bristles (28) secured to the frontal free end of the head (14) forms an angle of approximately 81 degrees with the surface (30) of the head (14).
- The toothbrush according to any of the preceding claims, characterized in that tufts of bristles (32, 34) of the outer longitudinal rows (42) are tilted towards the first direction (D) and tufts of bristles (36, 38) of an inner longitudinal row (44) are tilted towards the second direction.
- The toothbrush according to any of the preceding claims, characterized in that at least some tufts of bristles (28, 32, 34, 36, 38) provide a different color.
- The toothbrush according to any of the preceding claims, characterized in that at least some tufts of bristles (28, 32, 34, 36, 38) have different cross-sectional areas.
- The toothbrush according to any of the preceding claims, characterized in that at least some tufts of bristles (28, 32, 34, 36, 38) have a different cross-sectional shape.
- The toothbrush according to any of the preceding claims, characterized in that at least some tufts of bristles (28, 32, 34, 36, 38) consist of different material.
- The toothbrush according to any of the preceding claims, characterized in that the cross-sectional area of the further tuft of bristles (28) is at least four times the size of the cross-sectional area of any other tuft of bristles (32, 34, 36, 38) secured to the head (14).
- The toothbrush according to any of the preceding claims, characterized in that no other tuft of bristles (32, 34, 36, 38) is secured to the head (14) at a location that is farther away from the handle (12) than the location at which the further tuft of bristles (28) is secured to the head (14).
- The toothbrush according to any of the preceding claims, characterized in that the first greater length and the second smaller length differ from each other by approximately 2.286 m (0.090 inches).
- The toothbrush according to any of the preceding claims, characterized in that the first greater length is approximately 11.18 mm (0.440 inches) or the second smaller length is 8.89 mm (0.350 inches).
- The toothbrush according to any of the preceding claims, characterized in that the cross-section of the tufts of bristles (32, 34, 36, 28) arranged on the rearward section of the head (14) provides a cross-sectional area of 3.02 mm2, (0.0045 square inches) or 1.74 mm2 (0.0027 square inches) or 2.58 mm2 (0.0040 square inches) or 5.42 mm2 (0.084 square inches) and that the cross-section of the further tuft of bristles (28) is approximately 24.06mm2 (0.0373 square inches).
- The toothbrush according to any of the preceding claims, characterized in that each tuft of bristles (28, 32, 34, 36, 38) consists of a large number of bristles, with the bristles having rounded-off ends.
- The toothbrush according to any of the preceding claims, characterized in that the bristles secured to the head (14) are made from PBT, from 6.12-nylon or from a nylon-Indicators (Trade Mark) material, each with or without abrasive, such as for instance kaolin clay.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08022193A EP2052643A3 (en) | 1997-11-12 | 1998-11-06 | Toothbrush |
EP02012748A EP1240847B1 (en) | 1997-11-12 | 1998-11-06 | Toothbrush |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US96829397A | 1997-11-12 | 1997-11-12 | |
US968293 | 1997-11-12 | ||
US177991 | 1998-10-23 | ||
US09/177,991 US6308367B1 (en) | 1997-11-12 | 1998-10-23 | Toothbrush |
PCT/US1998/023780 WO1999023910A1 (en) | 1997-11-12 | 1998-11-06 | Toothbrush |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02012748A Division EP1240847B1 (en) | 1997-11-12 | 1998-11-06 | Toothbrush |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0955837A1 EP0955837A1 (en) | 1999-11-17 |
EP0955837A4 EP0955837A4 (en) | 2000-07-19 |
EP0955837B1 true EP0955837B1 (en) | 2003-02-26 |
EP0955837B2 EP0955837B2 (en) | 2008-10-22 |
Family
ID=26873851
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98956668A Expired - Lifetime EP0955837B2 (en) | 1997-11-12 | 1998-11-06 | Toothbrush |
EP02012748A Expired - Lifetime EP1240847B1 (en) | 1997-11-12 | 1998-11-06 | Toothbrush |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02012748A Expired - Lifetime EP1240847B1 (en) | 1997-11-12 | 1998-11-06 | Toothbrush |
Country Status (24)
Country | Link |
---|---|
EP (2) | EP0955837B2 (en) |
JP (4) | JP4069188B2 (en) |
CN (1) | CN1120682C (en) |
AR (1) | AR048240A2 (en) |
AT (1) | ATE233060T1 (en) |
AU (1) | AU742959B2 (en) |
BR (1) | BR9806247A (en) |
CA (1) | CA2271852C (en) |
CZ (1) | CZ172999A3 (en) |
DE (4) | DE69811634T3 (en) |
ES (1) | ES2192797T5 (en) |
GB (1) | GB2333697A (en) |
HU (1) | HUP0004254A3 (en) |
ID (1) | ID21723A (en) |
IL (1) | IL129913A (en) |
NO (1) | NO992417L (en) |
NZ (1) | NZ335854A (en) |
PL (1) | PL191797B1 (en) |
RO (1) | RO120310B1 (en) |
RU (1) | RU2228129C2 (en) |
SK (1) | SK63899A3 (en) |
TR (1) | TR199901208T1 (en) |
TW (1) | TW538701U (en) |
WO (1) | WO1999023910A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD628808S1 (en) | 2009-12-23 | 2010-12-14 | Colgate-Palmolive Company | Toothbrush |
US10004322B2 (en) | 2013-06-06 | 2018-06-26 | The Procter & Gamble Company | Head for an oral care implement |
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US6601272B2 (en) * | 1998-05-08 | 2003-08-05 | John O. Butler Company | Dental hygiene system handle |
DE19900765A1 (en) | 1999-01-12 | 2000-07-13 | Braun Gmbh | Device for removing plaques and for cleaning interdental spaces |
AU5913299A (en) | 1999-09-08 | 2001-04-10 | Procter & Gamble Company, The | A handle for a toothbrush |
US6564416B1 (en) * | 2000-05-22 | 2003-05-20 | Gillette Canada Company | Toothbrush |
JP4132744B2 (en) | 2000-08-23 | 2008-08-13 | 花王株式会社 | Brush manufacturing method and apparatus |
DE60119769T2 (en) * | 2000-12-07 | 2007-05-24 | Glaxosmithkline Consumer Healthcare Gmbh & Co. Kg | BRUSH PART FOR AN ELECTRIC TOOTHBRUSH |
DE10122987B4 (en) * | 2001-05-11 | 2007-07-12 | Bürstenmann GmbH | toothbrush head |
JP4688345B2 (en) * | 2001-05-24 | 2011-05-25 | 花王株式会社 | toothbrush |
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US6848141B2 (en) | 2001-06-08 | 2005-02-01 | Colgate-Palmolive Company | Brush section for an electric toothbrush |
US6405401B1 (en) * | 2001-07-02 | 2002-06-18 | Colgate-Palmolive Company | Toothbrush having a bristle pattern which provides enhanced cleaning |
GB0123939D0 (en) | 2001-10-05 | 2001-11-28 | Glaxosmithkline Consumer Healt | Toothbrush |
US6725490B2 (en) * | 2001-11-06 | 2004-04-27 | The Procter & Gamble Company | Complex motion toothbrush |
DE10209320A1 (en) | 2002-03-02 | 2003-09-25 | Braun Gmbh | Toothbrush head of an electric toothbrush |
US20030163882A1 (en) | 2002-03-04 | 2003-09-04 | The Procter & Gamble Company | Electric toothbrushes |
US7269872B2 (en) * | 2002-04-12 | 2007-09-18 | Colgate-Palmolive Company | Powered toothbrush head |
DE20213083U1 (en) | 2002-08-27 | 2002-10-17 | F.A. Rueb Holding GmbH, 79677 Schönau | Toothbrush with a handle and an elongated bristle field |
US7478959B2 (en) | 2002-09-05 | 2009-01-20 | Colgate-Palmolive Company | Oral care toothbrush |
US20060272112A9 (en) * | 2003-03-14 | 2006-12-07 | The Gillette Company | Toothbrush |
US20040177462A1 (en) * | 2003-03-14 | 2004-09-16 | The Gillette Company | Toothbrush head |
CN101862227A (en) | 2003-04-23 | 2010-10-20 | 宝洁公司 | Toothbrush head and toothbrush with vertical axis |
US7941886B2 (en) * | 2003-09-19 | 2011-05-17 | Braun Gmbh | Toothbrushes |
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DE202006020598U1 (en) | 2005-08-08 | 2009-02-26 | Gaba International Ag | Toothbrush with slanted and sharpened bristles |
DE102005045279A1 (en) * | 2005-09-22 | 2007-04-05 | Braun Gmbh | toothbrush head |
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US8631534B2 (en) * | 2006-06-08 | 2014-01-21 | Dr. Fresh, Llc | Toothbrush |
US20070283517A1 (en) | 2006-06-08 | 2007-12-13 | Stephen John Blanchard | Toothbrush head |
CH713325B1 (en) * | 2006-08-25 | 2018-06-29 | Gaba Int Holding Gmbh | Toothbrush with slanted bristles and pointed bristles. |
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EP2770871B1 (en) * | 2011-10-27 | 2019-12-04 | GlaxoSmithKline Consumer Healthcare GmbH & Co.KG. | Toothbrush |
KR200469882Y1 (en) * | 2011-11-30 | 2013-11-20 | (주)아모레퍼시픽 | Tooth brush |
PL2810581T3 (en) * | 2013-06-06 | 2018-08-31 | Gillette Co Llc | Head for an oral care implement |
TR201815250T4 (en) * | 2013-06-06 | 2018-11-21 | Gillette Co Llc | Head element for an oral care implement. |
USD764804S1 (en) | 2013-11-05 | 2016-08-30 | Colgate-Palmolive Company | Oral care implement |
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US10238204B2 (en) | 2013-11-05 | 2019-03-26 | Colgate-Palmolive Company | Oral care implement |
USD749855S1 (en) | 2013-11-05 | 2016-02-23 | Colgate-Palmolive Company | Oral care implement |
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US10004322B2 (en) | 2013-06-06 | 2018-06-26 | The Procter & Gamble Company | Head for an oral care implement |
US10729232B2 (en) | 2013-06-06 | 2020-08-04 | The Procter & Gamble Company | Head for an oral care implement |
US11641932B2 (en) | 2013-06-06 | 2023-05-09 | Braun Gmbh | Head for an oral care implement |
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