EP0870440A1 - Improved tooth-brush with interchangeable head - Google Patents
Improved tooth-brush with interchangeable head Download PDFInfo
- Publication number
- EP0870440A1 EP0870440A1 EP98106510A EP98106510A EP0870440A1 EP 0870440 A1 EP0870440 A1 EP 0870440A1 EP 98106510 A EP98106510 A EP 98106510A EP 98106510 A EP98106510 A EP 98106510A EP 0870440 A1 EP0870440 A1 EP 0870440A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brush
- tooth
- housing
- tang
- hole
- 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.)
- Granted
Links
Images
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 drawbacks, 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, at least in correspondence of said through hole, with a layer of soft and elastic material.
- 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 backside 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 outer surface of the housing 2 is covered, at least on the area of 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 backside 2c in correspondence of 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 backside 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)
Abstract
Description
Claims (5)
- Tooth-brush with an interchangeable bristle carrier (3) consisting of a block (3a) into which is inserted a plurality of cleaning bristles (3b) and from which projects a tang (3c) to be fitted into a through hole (2a) formed into a housing (2) at the head of the tooth-brush stick (1), characterized in that, the outer surface of said housing (2) is covered, at least in correspondence of said through hole (2a), with a layer (4) of soft and elastic material.
- Tooth-brush as in claim 1), wherein said layer (4) of soft and elastic material consists of a membrane applied at least onto the backside (2c) of said housing (2).
- Tooth-brush as in claim 1) or 2), wherein said material is rubber or its derivatives.
- Tooth-brush as in claim 1) or 2), wherein said material is elastomer of the SEBS type, or the like.
- Tooth-brush as in any one of the previous claims, wherein said through hole (2a) and said tang (3c) have an elliptical shape.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI970258U | 1997-04-11 | ||
IT1997MI000258U IT237420Y1 (en) | 1997-04-11 | 1997-04-11 | IMPROVED INTERCHANGEABLE HEAD BRUSH |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0870440A1 true EP0870440A1 (en) | 1998-10-14 |
EP0870440B1 EP0870440B1 (en) | 2001-12-05 |
Family
ID=11375930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98106510A Expired - Lifetime EP0870440B1 (en) | 1997-04-11 | 1998-04-08 | Improved tooth-brush with interchangeable head |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0870440B1 (en) |
AT (1) | ATE209870T1 (en) |
DE (1) | DE69802741T2 (en) |
ES (1) | ES2169455T3 (en) |
IT (1) | IT237420Y1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000040115A1 (en) * | 1998-12-31 | 2000-07-13 | Kyoung Sik Park | Tooth brush |
EP1075806A1 (en) | 1999-08-10 | 2001-02-14 | PONZINI S.p.A. | Improved toothbrush with interchangeable head and method of manufacture therefor |
US7069615B2 (en) * | 1999-06-11 | 2006-07-04 | Gavney Jr James A | Squeegee device and system |
EP1908371A1 (en) * | 2002-04-15 | 2008-04-09 | Trisa Holding AG | Tooth brush and method for its production |
FR3095578A1 (en) * | 2019-04-30 | 2020-11-06 | Caliquo | Manual toothbrush for children with interchangeable head consisting of a removable and ergonomic toothbrush head and an ergonomic toothbrush handle. |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6886207B1 (en) | 1999-06-14 | 2005-05-03 | The Procter & Gamble Company | Toothbrush |
US6553604B1 (en) | 2000-03-16 | 2003-04-29 | Gillette Canada Company | 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 |
JP4396992B2 (en) | 2003-04-23 | 2010-01-13 | ザ プロクター アンド ギャンブル カンパニー | electric toothbrush |
US7941886B2 (en) | 2003-09-19 | 2011-05-17 | Braun Gmbh | Toothbrushes |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2088710A (en) | 1980-12-04 | 1982-06-16 | Braga R | Silver-plated tooth brush |
US5396679A (en) | 1994-02-07 | 1995-03-14 | Steven R. Brown | Toothbrush with replaceable brush insert |
US5555590A (en) | 1994-09-28 | 1996-09-17 | Fuchs Gmbh | Tooth brush |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3724640A1 (en) * | 1987-07-25 | 1989-02-02 | Nitzsche International Gmbh | TOOTHBRUSH |
DE19624962A1 (en) * | 1996-06-22 | 1998-01-02 | Coronet Werke Gmbh | Toothbrush with replaceable brush part |
-
1997
- 1997-04-11 IT IT1997MI000258U patent/IT237420Y1/en active IP Right Grant
-
1998
- 1998-04-08 AT AT98106510T patent/ATE209870T1/en active
- 1998-04-08 DE DE69802741T patent/DE69802741T2/en not_active Expired - Lifetime
- 1998-04-08 ES ES98106510T patent/ES2169455T3/en not_active Expired - Lifetime
- 1998-04-08 EP EP98106510A patent/EP0870440B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2088710A (en) | 1980-12-04 | 1982-06-16 | Braga R | Silver-plated tooth brush |
US5396679A (en) | 1994-02-07 | 1995-03-14 | Steven R. Brown | Toothbrush with replaceable brush insert |
US5555590A (en) | 1994-09-28 | 1996-09-17 | Fuchs Gmbh | Tooth brush |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000040115A1 (en) * | 1998-12-31 | 2000-07-13 | Kyoung Sik Park | Tooth brush |
US7069615B2 (en) * | 1999-06-11 | 2006-07-04 | Gavney Jr James A | Squeegee device and system |
EP1075806A1 (en) | 1999-08-10 | 2001-02-14 | PONZINI S.p.A. | Improved toothbrush with interchangeable head and method of manufacture therefor |
EP1908371A1 (en) * | 2002-04-15 | 2008-04-09 | Trisa Holding AG | Tooth brush and method for its production |
FR3095578A1 (en) * | 2019-04-30 | 2020-11-06 | Caliquo | Manual toothbrush for children with interchangeable head consisting of a removable and ergonomic toothbrush head and an ergonomic toothbrush handle. |
Also Published As
Publication number | Publication date |
---|---|
DE69802741D1 (en) | 2002-01-17 |
DE69802741T2 (en) | 2002-08-08 |
IT237420Y1 (en) | 2000-09-13 |
ATE209870T1 (en) | 2001-12-15 |
ES2169455T3 (en) | 2002-07-01 |
ITMI970258U1 (en) | 1998-10-11 |
EP0870440B1 (en) | 2001-12-05 |
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