EP0870440B1 - Verbesserte Zahnbürste mit auswechselbarem Kopf - Google Patents

Verbesserte Zahnbürste mit auswechselbarem Kopf Download PDF

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Publication number
EP0870440B1
EP0870440B1 EP98106510A EP98106510A EP0870440B1 EP 0870440 B1 EP0870440 B1 EP 0870440B1 EP 98106510 A EP98106510 A EP 98106510A EP 98106510 A EP98106510 A EP 98106510A EP 0870440 B1 EP0870440 B1 EP 0870440B1
Authority
EP
European Patent Office
Prior art keywords
brush
tooth
hole
tang
housing
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
Application number
EP98106510A
Other languages
English (en)
French (fr)
Other versions
EP0870440A1 (de
Inventor
Eligio Ponzini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ponzini SpA
Original Assignee
Ponzini SpA
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
Application filed by Ponzini SpA filed Critical Ponzini SpA
Publication of EP0870440A1 publication Critical patent/EP0870440A1/de
Application granted granted Critical
Publication of EP0870440B1 publication Critical patent/EP0870440B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/04—Bristle carriers arranged in the brush body interchangeably removable bristle carriers

Definitions

  • the present invention concerns a tooth-brush, particularly a tooth-brush with an interchangeable bristle carrier.
  • the tooth-brush portion most subject to wear is the head portion carrying the bristles, which form the active part in the teeth cleaning process.
  • Tooth-brushes wherein the bristle carrier is interchangeable have spread on the market since quite some time: they allow a wide flexibility of use, a saving of costs for the consumer, and a minimum impact on the environment.
  • the interchangeable bristle carrier can in fact be produced and sold separately from the tooth-brush stick, allowing the consumer to purchase the type of bristle carrier which suits him best (for the characteristics of the bristles, such as softness, length, colour, etc.) and, above all, to keep for a long time the tooth-brush stick - which is the most expensive component and the largest one as far as disposal - and replace only the bristle carrier when the bristles have worn out.
  • the interchangeable bristle carrier normally consists of a block, carrying bristles projecting from the front side and a tang projecting from the rear side, said tang being fitted into a suitable housing formed into the head of the tooth-brush stick.
  • the interchangeable bristle carrier there are preferably associated antirotation means, to prevent said carrier from rotating about the longitudinal axis of the tang in the event that its housing should be of circular shape.
  • the cross section of the tang could be conceived so as not to have an axially symmetrical shape, but for example an elliptical shape.
  • the tang of the bristle carrier is normally fitted, with a transition fit, into a corresponding hole formed into the head of the tooth-brush stick.
  • Said hole having to guide and retain the tang, should be sufficiently deep and thus cross the head of the tooth-brush stick throughout its thickness.
  • Tooth-brushes of the type described heretofore are known, for example, from US-A-5396679, US-A-5555590 and GB-A-2088710.
  • the object of the present invention is to overcome the above draw-backs, by supplying a tooth-brush with an interchangeable bristle carrier - consisting of a block into which is inserted a plurality of cleaning bristles and from which projects a tang to be fitted into a through hole formed into a housing at the head of the tooth-brush stick - wherein the outer surface of said housing is covered, with a layer of soft and elastic material, said layer is a coating layer, which is separate from said bristle carrier and which is applied to and extending over at least the whole back surface of said housing, thereby covering said through hole and said end of the tang.
  • a tooth-brush stick 1 consists of a handle 1a and of a neck 1b terminating, at its head, with a housing 2 for an interchangeable bristle carrier 3.
  • the interchangeable bristle carrier 3 consists of a block 3a into which is inserted a plurality of bristles 3b, a coupling tang 3c projecting from the side of the block opposite to that carrying the bristles.
  • the bristle carrier 3 is inserted with a tight fit into said housing 2, by engagement of the tang 3c into a corresponding hole 2a formed into the bottom surface 2b of said housing 2.
  • the hole 2a, and thus the cross section area of the tang 3c can be of any shape, for example - as mentioned above - of elliptical shape.
  • the hole 2a crosses the bottom surface 2b of the housing 2 throughout its thickness.
  • the length of the tang 3c is such that it entirely engages into the hole 2a and, eventually, slightly emerges from the back 2c of the housing 2 (as shown in fig. 3), thereby improving the overall restraint of the bristle carrier 3 into the housing 2.
  • the whole outer surface of the housing 2 is covered, including the area around and comprising the hole 2a, with a coating layer 4 of soft and elastic material consisting, for example, of a membrane of rubber or elastomeric material (SEBS type synthetic rubber, and the like).
  • Said membrane 4 is arranged to cover the back 2c and the through hole 2a, so as to thereby cover also the end of the tang 3c.
  • the membrane 4 is apt to cover not only the back 2c of the housing 2, but also the remaining part of its outer surface, and even a small portion of the neck 1b.
  • the membrane 4 anyhow allows the end of the tang 3c to partially project out of the hole 2a, while yielding under the pressure of said tang; it thus simultaneously forms a smooth and radiusing surface, apt to eliminate any sharp corners which may injure the mouth cavity. It thereby fully overcomes a first drawback of known technique.
  • the presence of the membrane 4 allows to avoid any direct exposure of the backside 2c - and particularly of the coupling surfaces of the tang 3c and hole 2a - to the surrounding environment, thereby preventing the possible gathering of dirt, and achieving also the second object of the invention.

Landscapes

  • Brushes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Pens And Brushes (AREA)

Claims (4)

  1. Eine Zahnbürste mit einem auswechselbaren Borstenträger (3), der aus einem Block (3a) besteht, in den mehrere Reinigungsborsten (3b) eingesetzt sind und von dem ein Zapfen (3c) vorragt, der in ein in einem Gehäuse (2) am Kopf des Zahnbürstenstiels (1) ausgebildetes Durchgangsloch (2a) einzusetzen ist, wobei das Durchgangsloch (2a) von einer Schicht (4) aus weichem und elastischem Material verschlossen ist, worin die Schicht (4) eine Deckschicht ist, die separat von dem Borstenträger (3) ist und auf wenigstens der gesamten Rückfläche (2c) des Gehäuses (2) aufgebracht ist und sich darüber erstreckt, wodurch sie das Durchgangsloch (2a) und das Ende des Zapfens (3c) abdeckt.
  2. Zahnbürste nach Anspruch 1, dadurch gekennzeichnet, daß das Material Gummi oder Derivate davon ist.
  3. Zahnbürste nach Anspruch 1, dadurch gekennzeichnet, daß das Material Elastomer vom SEBS-Typ oder dergleichen ist.
  4. Zahnbürste nach irgendeinem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Durchgangsloch (2a) und der Zapfen (3c) eine elliptische Gestalt aufweisen.
EP98106510A 1997-04-11 1998-04-08 Verbesserte Zahnbürste mit auswechselbarem Kopf Expired - Lifetime EP0870440B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI970258U 1997-04-11
IT1997MI000258U IT237420Y1 (it) 1997-04-11 1997-04-11 Spazzolino a testa intercambiabile migliorato

Publications (2)

Publication Number Publication Date
EP0870440A1 EP0870440A1 (de) 1998-10-14
EP0870440B1 true EP0870440B1 (de) 2001-12-05

Family

ID=11375930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98106510A Expired - Lifetime EP0870440B1 (de) 1997-04-11 1998-04-08 Verbesserte Zahnbürste mit auswechselbarem Kopf

Country Status (5)

Country Link
EP (1) EP0870440B1 (de)
AT (1) ATE209870T1 (de)
DE (1) DE69802741T2 (de)
ES (1) ES2169455T3 (de)
IT (1) IT237420Y1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7941886B2 (en) 2003-09-19 2011-05-17 Braun Gmbh Toothbrushes
US7975344B2 (en) 2003-03-14 2011-07-12 The Gillette Company Toothbrush head
US8332982B2 (en) 2004-04-23 2012-12-18 The Gillette Company Vibrating toothbrush
USRE44819E1 (en) 2000-03-16 2014-04-01 Procter & Gamble Business Services Canada Company Toothbrush

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6886207B1 (en) 1999-06-14 2005-05-03 The Procter & Gamble Company Toothbrush
KR20000047379A (ko) * 1998-12-31 2000-07-25 박경식 칫솔
US6319332B1 (en) * 1999-06-11 2001-11-20 James Albert Gavney, Jr. Squeegee device and system
DE60015247T2 (de) 1999-08-10 2005-11-03 Ponzini S.P.A., Lazzate Verbesserte Zahnbürste mit auswechselbarem Bürstenträger und Herstellungsverfahren
DE10216641A1 (de) * 2002-04-15 2003-10-23 Trisa Holding Ag Triengen Zahnbürste und Verfahren zu deren Herstellung
WO2004093719A2 (en) 2003-04-23 2004-11-04 The Procter & Gamble Company Electric toothbrushes
FR3095579A1 (fr) * 2019-04-30 2020-11-06 Caliquo Brosse à dents manuelle pour enfant à tête interchangeable composée d’une tête de brosse à dents amovible et ergonomique et d’un manche de brosse à dents ergonomique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890349A (en) * 1987-07-25 1990-01-02 Klaus Nitzsche Tooth care atricle such as a toothbrush with replaceable insert
WO1997049315A1 (de) * 1996-06-22 1997-12-31 Coronet-Werke Gmbh Zahnpflegegerät mit auswechselbarem pflegeteil

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1134586B (it) 1980-12-04 1986-08-13 Renato Braga Spazzolino da denti con testina porta-setole argentata
US5396679A (en) 1994-02-07 1995-03-14 Steven R. Brown Toothbrush with replaceable brush insert
DE4434617A1 (de) 1994-09-28 1996-04-04 Fuchs Gmbh Zahnbürste

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890349A (en) * 1987-07-25 1990-01-02 Klaus Nitzsche Tooth care atricle such as a toothbrush with replaceable insert
WO1997049315A1 (de) * 1996-06-22 1997-12-31 Coronet-Werke Gmbh Zahnpflegegerät mit auswechselbarem pflegeteil

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE44819E1 (en) 2000-03-16 2014-04-01 Procter & Gamble Business Services Canada Company Toothbrush
US7975344B2 (en) 2003-03-14 2011-07-12 The Gillette Company Toothbrush head
US8528148B2 (en) 2003-03-14 2013-09-10 The Gillette Company Toothbrush head
US9220335B2 (en) 2003-03-14 2015-12-29 The Gillette Company Toothbrush head
US7941886B2 (en) 2003-09-19 2011-05-17 Braun Gmbh Toothbrushes
US8621698B2 (en) 2003-09-19 2014-01-07 Braun Gmbh Toothbrushes
US9204949B2 (en) 2003-09-19 2015-12-08 The Gillettte Company Toothbrushes
US8332982B2 (en) 2004-04-23 2012-12-18 The Gillette Company Vibrating toothbrush

Also Published As

Publication number Publication date
ES2169455T3 (es) 2002-07-01
IT237420Y1 (it) 2000-09-13
ITMI970258U1 (it) 1998-10-11
ATE209870T1 (de) 2001-12-15
DE69802741D1 (de) 2002-01-17
EP0870440A1 (de) 1998-10-14
DE69802741T2 (de) 2002-08-08

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