EP2048988B1 - Tooth-care device - Google Patents

Tooth-care device Download PDF

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Publication number
EP2048988B1
EP2048988B1 EP07805214.9A EP07805214A EP2048988B1 EP 2048988 B1 EP2048988 B1 EP 2048988B1 EP 07805214 A EP07805214 A EP 07805214A EP 2048988 B1 EP2048988 B1 EP 2048988B1
Authority
EP
European Patent Office
Prior art keywords
bristles
mount
handle
position
distal portion
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 - Fee Related
Application number
EP07805214.9A
Other languages
German (de)
French (fr)
Other versions
EP2048988A2 (en
Inventor
Annalisa Serra
Original Assignee
Annalisa Serra
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
Priority to ITBO20060577 priority Critical patent/ITBO20060577A1/en
Application filed by Annalisa Serra filed Critical Annalisa Serra
Priority to PCT/IB2007/052931 priority patent/WO2008015616A2/en
Publication of EP2048988A2 publication Critical patent/EP2048988A2/en
Application granted granted Critical
Publication of EP2048988B1 publication Critical patent/EP2048988B1/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B5/00Brush bodies; Handles integral with brushware
    • A46B5/002Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
    • A46B5/0054Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
    • A46B5/0075Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being adjustable and stable during use
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B5/00Brush bodies; Handles integral with brushware
    • A46B5/002Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
    • A46B5/0054Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
    • A46B5/0075Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being adjustable and stable during use
    • A46B5/0083Mechanical joint allowing adjustment in at least one plane
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B2200/00Brushes characterized by their functions, uses or applications
    • A46B2200/10For human or animal care
    • A46B2200/1066Toothbrush for cleaning the teeth or dentures

Abstract

The tooth-care device consists of a gripping handle (2) presenting a distal portion (3) equipped with an array of bristles (4). The bristles array (4) is connected in a revolving way to the handle (2) through a mount (13) assembled rotatably suitable to allow the said bristles array (4) to rotate with respect to the handle (2) in a plurality of predetermined angular usage potions (a, b, c, d), with respect to an axis parallel to the direction of the bristles (4).

Description

    Technical Field
  • The present invention relates to a device for the tooth care.
  • Background Art
  • Devices for the tooth care, better known as toothbrushes, have been known for a long time already. These devices consist of a handle presenting a portion equipped with an array of bristles suitable to allow the teeth brushing.
  • It is likewise known that, to effectively clean the teeth, the toothbrush has to easily reach all the parts of the set of teeth. In particular, it is preferable that the toothbrush operates the brushing of the front and back surface of each tooth operating with reciprocating motion along a vertical direction.
  • To better satisfy this requirement, various forms of toothbrushes different from the traditional toothbrushes have been proposed. For instance, U.S. Pat. No. 5,305,491 illustrates a toothbrush comprising an end portion with the bristles arranged so that they simultaneously approach each tooth on three sides, the upper side and the opposite vertical surfaces. This toothbrush has a very complex shape and does not solve the problem of the cleaning in an effective way, since it does not allow the bristles to treat the teeth in the correct brushing direction.
  • U.S. pat. No. 4,829,621 illustrates a toothbrush elastically deformable in an intermediate area comprised between the handle and the bristled portion. This toothbrush allows orientating the bristled portion on a plane that contains the longitudinal direction of the bristles. Even this toothbrush does not allow operating the cleaning of the teeth in an effective way, since the bristles cannot be arranged in the correct way to vertically brush the inner side of the teeth.
  • US 2503134 illustrates an adjustable toothbrush comprising a brush member, a flat sided lug secured to the brush member and a handle bifurcated at one end to form arms. A resilient wire is attached at its ends to the cited arms and bent to form a ring which has flat internal surfaces adjustably disposed on the flat sided lug. To lock the ring on the lug, a ferrule is slidably disposed on the cited arms and frictionally engaging the cited arms in selected longitudinal position.
  • Disclosure of Invention Disclosure
  • The aim of the present invention is to overcome the cited drawback by devising a device for the tooth care which enables to carry out an effective cleaning of all the teeth of the mouth, in particular the portion of teeth facing the inside of the mouth.
  • Within this aim, an object of the claimed invention is to provide a device for the tooth care of simple, practical structural conception, equipped with certainly reliable functioning, of versatile use, and also of relatively economical cost.
  • The cited aims are reached, according to the claimed invention, by the tooth-care device according to claim 1.
  • Description of Drawings
  • Description details of the invention will be further evident in the illustrations of a preferred embodiment of the claimed tooth-care device illustrated in the guideline drawings attached, wherein:
    • fig. 1 illustrates a rear view of a device not according to the invention;
    • fig. 2 illustrates a lateral view of the same device;
    • fig. 3 illustrates a rear view of the device according to the invention;
    • fig. 4, 5 and 6 respectively illustrate a view of the mount means of the array of bristles in the above-mentioned predetermined angular positions;
    • fig. 7 and 8 illustrate a longitudinal sectional view of the locking means respectively in the locked and unlocked configuration;
    • fig. 9 illustrates a sectional view of a detail of the locking means of the mount of the bristles according to trace IX-IX of fig. 7;
    • fig. 10 illustrates a sectional detail not according to the invention of the threaded connection between the collar of the locking means and the handle;
    • fig. 11 illustrates a sectional detail of an embodiment of the connection between the collar of the locking means and the handle according to the invention.
    Best Mode
  • With reference to such figures, 1 refers to a tooth-care device. The device 1 consists of a gripping handle 2 having a distal portion 3 equipped on the upper side with an array of bristles 4 for the cleaning of the teeth through brushing. The bristles 4 are arranged substantially parallel to a direction perpendicular to the longitudinal axis of the distal portion 3. The bristles 4 are borne by a mount means 13 assembled rotatably with respect to the distal portion 3 along an axis parallel to the direction of the bristles 4. The mount 13 is provided with coupling means 14 at the back, suitable to fasten the mount 13 to the distal portion 3 of the handle 2. Such coupling means 14 are preferably constituted by turning mating means including a pin 15 with octagonal profile, equipped with a threaded hole 15a along its longitudinal axis. The distal portion 3 is preferably shaped by two parallel tines 3a, 3b adequately spaced.
  • The inner surfaces of the said tines 3a, 3b form two undercuts adequately shaped in order to defme together a seat 25 with octagonal profile suitable to hold the pin 15. In the mated configuration the pin 15 is hold in seat inside the octagonal profile by a screw mean 16. Clearly, not according to the invention it is possible to provide that the coupling means 14 are realized in a different way, for instance through removable slide, friction or ratchet gear means.
  • In practice, the array of bristles 4 can be oriented in a plurality of configurations differently angled with respect to the distal portion 3, further than an aligned configuration of the traditional type. In particular, the octagonal shape of the pin 15 allows to arrange the mount 13 of the bristles 4 in four different predetermined angular positions: a first position a) aligned to the axis of the handle (fig. 1); a second position b) oriented at 45° with respect to the axis of the handle, particularly effective for the cleaning of the inner surface of the premolars and of the left lower molars and the right upper ones (fig. 4); a third position c) oriented at 90° with respect to the axis of the handle, which allows an easy access to the inner surface of the incisors and of the lower and upper canine teeth (fig. 5); a fourth position d) oriented at 135° with respect to the axis of the handle, to facilitate the cleaning of the inner surface of the molars and of the right lower premolars and of the left upper ones (fig. 6).
  • The distal portion 3 is rigidly connected to the handle 2 and it is equipped with adequate locking means 19 suitable to selectively lock the mount 13 of the bristles 4 in one of the said predetermined angular position in operational phase. More in detail, according to an embodiment of the invention, the locking means 19 comprise a movable collar 5, with cylindrical shape, assembled coaxial externally to the distal portion 3, suitable to slide between a lifted engaged position and a lowered disengaged configuration. In the example illustrated in fig. 10, that is not in the scope of the invention, the inner surface of the collar 5 is threaded and it is suited to be screwed onto the terminal portion of the handle 2. The rotation of the collar 5 causes its axial shift, in the usage configuration, to a lifted position, engaging the tines 3a, 3b below, for friction. The tines 3a, 3b shape, in the area 18 of contact with the collar 5, a conical profile conjugated with a conical bevel 17 of the same collar 5. The collar 5, in its usage configuration, prevents, in this way, the elastic movement of the two tines 3a, 3b of the distal portion 3 and rigidly fastens the angular position of the support 13 with respect to the handle 2.
  • The functioning of the tooth-care device according to the invention is clear from the foregoing description.
  • In the traditional use configuration, the device 1 presents the bristles array 4 with the mount 13 oriented in configuration aligned with the distal portion 3. By exerting upon the collar 5 an adequate rotation, the collar 5 screws shifting downward and leaves the two tines 3a, 3b of the distal portion 3 free to elastically warp, allowing the rotation of the hexagonal pin 15 inside the octagonal profile shaped by the two tines 3a, 3b. In this way it is possible to arrange the support 13 in a different angular position, in particular the angular position most adequate to operate the cleaning of the different parts of the set of teeth according to the correct brushing direction. Once the support 13 is positioned as desired, it is sufficient to exert a rotation of the collar 5 in the opposite direction to lock the system again.
  • According to the invention (fig. 3 and 11), the collar 5 is kept locked in the use configuration through the interposition of an adequate spring mean 20 under compression. To modify the angular position of the mount 13 of the bristles 4 is therefore necessary to exert an axial action on the collar 5 downward, contrasting the spring returning action, to rotate the mount 13 in one of the predetermined positions and to release the collar 5.
  • Not according to the invention it is possible to provide for the collar 5 to freely slide in longitudinal direction on the terminal part of the handle 2 and the locking action, obtained exerting an adequate axial thrust upward on the collar 5, is exerted only by the friction generated on the conical profile 18, thanks to the use of suitable materials.
  • The tooth-care device reaches the aim to carry out an effective cleaning in every part of the set of teeth. In particular, by adequately orienting the mount 13 of the bristles array 4 it is possible to easily clean even the portion of teeth facing the inside of the mouth. This is easily made simple by the coupling means 14, which allow varying in an easy and fast way the positioning of the mount 13.
  • A prerogative of the claimed tooth-care device is that the angular positions assumed by the mount 13 allow to effectively operate the teeth brushing with reciprocating motion along the teeth longitudinal axis, even in the area of the set of teeth facing the inside where, with the traditional toothbrushes, it is difficult, if not impossible, to oper ate those movements.
  • The claimed device has an ergonomic shape, in particular being suited to be easily used both by right-handed and left-handed people thanks to the specularity of the two inclined positions b) and d) that can be assumed by the mount 13.
  • An advantage of the claimed device is that the bristles array 4 can easily be made interchangeable thanks to the presence of the removable coupling means 14. In this way it can be provided to re-use the body of the device with a new array of bristles, without compromising the hygiene and the effectiveness of the device.
  • A further advantage of the claimed device is the predetermined and limited number of operational positions. This allows using the device more easily in the correct position.
  • Finally, it has to be pointed out that the claimed device results of simple and sturdy structure in order to have moderate costs, adequate to the requirement of a product of large consumption.
  • Materials adopted for the actual realization of the invention, as well as their shapes and sizes, can be various, depending on the requirements.
  • Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect.

Claims (2)

  1. Tooth-care device, comprising a gripping handle (2) presenting a distal portion (3) equipped with an array of bristles (4), the said array of bristles (4) being set on a mount (13) connected in a revolving way to the said distal portion (3) through coupling means (14) comprising a pin (15) with octagonal profile and a seat (25) with octagonal profile suitable to allow the said mount (13) to rotate with respect to the said distal portion (3) around an axis (A) parallel to the direction of the bristles (4),
    said distal portion (3) peripherally shaping a pair of parallel tines (3a, 3b), internally shaping said seat (25) suitable to be engaged by the said coupling means (14),
    the said mount (13) being suitable to rotate in a plurality of predetermined angular usage positions (a, b, c, d),
    angularly distributed on a plane orthogonal to the said direction of the bristles (4),
    the said predetermined angular positions (a, b, c, d) of the said mount (13) of the bristles (4) consisting of a first position (a) aligned with the axis of the said handle (2); a second position (b) oriented at 45° with respect to the axis of the said handle (2); a third position (c) oriented at 90° with respect to the axis of the said handle (2); a fourth position (d) oriented at 135° with respect to the axis of the said handle (2);
    the tooth-care device further comprising locking means (19) suitable to selectively lock the said mount (13) of the bristles (4) in one of the said predetermined angular positions (a, b, c, d),
    the said locking means (19) comprising a movable collar (5) set coaxial externally to the said distal portion (3) and suitable to slide between a lifted tightening position of the said parallel tines (3a, 3b), for the locking of the coupling means (14) of the mount (13) in one of the said predetermined angular positions (a, b, c, d), and a lowered disengagement configuration that allows the rotation of the same mount (13),
    the said movable collar (5) being strained by a spring means (20) in the said lifted tightening position, the said movable collar (5) being kept locked in the use configuration through the interposition of the spring means (20) under compression, characterized in that for modifying the angular position of the said mount (13) of the bristles (4) is necessary to exert an axial action on said movable collar (5) downward, contrasting the spring means (20) returning action, thus enabling the rotation of the said mount (13) in one of the predetermined angular positions (a, b, c, d) and the release of the said movable collar (5).
  2. Device according to claim 1, characterized in that the said parallel tines (3a, 3b) shape an area (18) of contact with the said collar (5) having conical profile conjugated with a conical bevel (17) of the same collar (5).
EP07805214.9A 2006-07-31 2007-07-24 Tooth-care device Expired - Fee Related EP2048988B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITBO20060577 ITBO20060577A1 (en) 2006-07-31 2006-07-31 Device for dental cleaning
PCT/IB2007/052931 WO2008015616A2 (en) 2006-07-31 2007-07-24 Tooth-care device

Publications (2)

Publication Number Publication Date
EP2048988A2 EP2048988A2 (en) 2009-04-22
EP2048988B1 true EP2048988B1 (en) 2013-11-20

Family

ID=38846914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07805214.9A Expired - Fee Related EP2048988B1 (en) 2006-07-31 2007-07-24 Tooth-care device

Country Status (3)

Country Link
EP (1) EP2048988B1 (en)
IT (1) ITBO20060577A1 (en)
WO (1) WO2008015616A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL196650A (en) 2009-01-22 2015-06-30 Mordechai Kirsh Toothbrush
EP2410641A1 (en) 2010-07-23 2012-01-25 Braun GmbH Linear electric motor
CA2807221A1 (en) 2010-08-19 2012-02-23 Braun Gmbh Method for operating an electric appliance and electric appliance
PL2550938T3 (en) 2011-07-25 2015-06-30 Braun Gmbh Oral hygiene device
ES2451021T3 (en) 2011-07-25 2014-03-26 Braun Gmbh magnetic connection between a toothbrush handle and a brush head
US9099939B2 (en) 2011-07-25 2015-08-04 Braun Gmbh Linear electro-polymer motors and devices having the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1835319A (en) * 1925-08-12 1931-12-08 Clean Be Tween Tooth Brush Cor Toothbrush
US2503134A (en) * 1946-03-02 1950-04-04 William B Schroeder Adjustable toothbrush
FR1227009A (en) * 1959-06-11 1960-08-18 Improvements in brushes

Also Published As

Publication number Publication date
ITBO20060577A1 (en) 2008-02-01
WO2008015616B1 (en) 2008-05-22
WO2008015616A3 (en) 2008-03-27
EP2048988A2 (en) 2009-04-22
WO2008015616A2 (en) 2008-02-07

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