EP0706336B1 - Toothbrush - Google Patents

Toothbrush Download PDF

Info

Publication number
EP0706336B1
EP0706336B1 EP94919661A EP94919661A EP0706336B1 EP 0706336 B1 EP0706336 B1 EP 0706336B1 EP 94919661 A EP94919661 A EP 94919661A EP 94919661 A EP94919661 A EP 94919661A EP 0706336 B1 EP0706336 B1 EP 0706336B1
Authority
EP
European Patent Office
Prior art keywords
recess
pin
bristle
edge
counter
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
EP94919661A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0706336A1 (en
Inventor
Evodio Galetti
Carlo De Ascentiis
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0706336A1 publication Critical patent/EP0706336A1/en
Application granted granted Critical
Publication of EP0706336B1 publication Critical patent/EP0706336B1/en
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
    • A46B7/06—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement
    • 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

  • This invention relates to a toothbrush.
  • this invention relates to a toothbrush provided with a mobile bristle-holding head.
  • Toothbrushes for dental care provided with a fixed bristle-holding head aligned with the axis of the handle are known to the art and marketed.
  • a toothbrush has been proposed whose head angulation is variable and pre-determinable relatively to the axis of the handle.
  • a toothbrush of this type is disclosed in the Italian patent nr. 1.205.608, granted on March 23, 1989.
  • the arrangement and stabilization of the handle according to various angulations relatively to the bristle-holding head is obtained by means of rises integral with the handle, radially arranged around a joint and opposing radial recesses integral with either the head back or the internal wall of a tongue substantially parallel to the back of said head and integral with same, or by means of rises integral with the head, which engage into recesses obtained in the handle.
  • variable and stabilized angulations can be obtained; in particular, angulations of 22.5°, 45°, 90° and 180°.
  • the angulation of the head relatively to the handle is chosen by hand-operating on same until the position is found which allows to exercise the maximum effort in the optimum direction for cleaning the teeth.
  • This condition can respected as long as the inclination of the handle is kept constant during the cleaning operation.
  • DE-A-3 425 940 discloses a toothbrush comprising a handle, a bristle-holding head and means for engaging the head into an end of the handle consisting of a pin pressure inserted into a recess.
  • the bristle-holding head can freely rotate around the axis of the engagement means, however its oscillating motion with respect to the plane defined by the bristle-holding head surface is limited and prevented by the surface of the handle.
  • the object of the present invention is to provide a toothbrush which allows to overcome the above-mentioned drawbacks and limitations.
  • the bristle-holding head can rotate freely, both clock- and counterclockwise and, oscillate at the same time on the axis of said engagement means said axis being perpendicular to the handle.
  • Figs. 1 through 9 show a preferred embodiment of the toothbrush provided with a rotating and oscillating head, subject matter of this invention.
  • Such toothbrush comprises a handle, preferably from rigid plastic material, provided with a top end (2) and a bristle-holding head (4).
  • Said head (4) comprises a back (5), preferably from semirigid and slightly elastic plastic material, in which bristles (3) are inserted.
  • Said back (5) is provided, on the opposite side relatively to bristles (3) and in a position balanced and integral with said back, with a pin (8) provided with longitudinal strips (9).
  • Said pin (8) provided with said strips (9) is mushroom-shaped.
  • the assembly of said head (4) with the handle top end (2) is achieved by engaging said pin (8) into a recess (6) obtained on the surface (12) of said top end (2) orientated towards said head and realized during the moulding stage of the part.
  • Said recess (6) comprises a lead-in round hole (11) whose diameter is smaller than the maximum diameter of pin (8).
  • Surface (12) of the handle top end (2) is not uniformly parallel to the corresponding surface of back (5), being tapered both longitudinally above and under hole (11) and transversally at both sides of hole (11).
  • Such taperings together with an angulation between base (13) of pin (8) and edge (7) of recess (6), allow head (4) to oscillate freely on the rotation axis, with angulations ⁇ between said surface (12) and the corresponding surface of said back (5) and said base (13) of pin (8) and said edge (7), as shown on Figs. 1, 7 and 9.
  • the optimum amplitude of angulations ⁇ is 2° - 5°.
  • Figr. 10 through 13 show a variant of the system of assembly of the bristle-holding head to the handle top end of the toothbrush subject matter of this invention.
  • Back (5) of the bristle-holding head (5) preferably from semirigid and slightly elastic material, as specified above, comprises, in a balanced position, a gudgeon pin (18) provided, along the perimeter, with a rise (17) having a triangular transversal section, as shown on Fig. 12.
  • the handle top end (2) preferably from rigid plastic material, as specified above, comprises a hole (21) and a recess (19), as shown on Fig. 11.
  • a hollow counter-gudgeon pin (16) is provided separately, whose geometrical structure allows to house in the inside, with a suitable clearance, said gudgeon pin (18).
  • Counter-gudgeon pin (16) is provided, along its internal surface and the perimeter, with stop pegs (15) having a triangular rectangle transversal section, as shown on Fig. 10.
  • Said hollow counter-gudgeon pin (16) is suitably mode from rigid plastic material, just as the handle.
  • the assembly of head (5) on the handle top end (12) is obtained by introducing, in the direction of arrow F6, gudgeon pin (18) into hole (21), and introducing then, in the opposite direction according to arrow F5, counter-gudgeon pin (16) into recess (19). In so doing, gudgeon pin (18) gets into the recess of said hollow counter-gudgeon pin (16), as shown on Fig. 13.
  • the locking between gudgeon pin (18) and counter-gudgeon pin (16) is obtained by the clutching of said rise (17) on pegs (15).
  • the rotatory movement of the head is ensured by leaving, also in this case, a clearance of 0.2 - 0.5 mm between the external surface of the counter-gudgeon pin (16) and the surface of the hole (21) and between the internal surface (14') of head (14) of said counter-gudgeon pin (16) and the surface (20) of said recess (19).
  • the oscillatory movement of the head is allowed, instead, by the angulations ⁇ of 2° - 5° provided between said surface (14') and said surface (20), and, just as in the above described solution, between the taperings of surface (12) of handle top end (2) and the corresponding surface of back (5) of the bristle-holding head.
  • the described toothbrush may be realized in different sizes and in particular in the sizes suitables for grown-ups and children. All the corners and tips of the head and the handle are suitably rounded off and, besides, the head protrudes relatively to the handle top.

Landscapes

  • Brushes (AREA)
EP94919661A 1993-06-30 1994-06-24 Toothbrush Expired - Lifetime EP0706336B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT93MI001413A IT1264633B1 (it) 1993-06-30 1993-06-30 Spazzolino da denti con testina rotante e basculante
ITMI931413 1993-06-30
PCT/EP1994/002070 WO1995001113A1 (en) 1993-06-30 1994-06-24 Toothbrush

Publications (2)

Publication Number Publication Date
EP0706336A1 EP0706336A1 (en) 1996-04-17
EP0706336B1 true EP0706336B1 (en) 1997-11-05

Family

ID=11366508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94919661A Expired - Lifetime EP0706336B1 (en) 1993-06-30 1994-06-24 Toothbrush

Country Status (8)

Country Link
EP (1) EP0706336B1 (it)
JP (1) JPH08511967A (it)
AT (1) ATE159846T1 (it)
AU (1) AU7073094A (it)
CA (1) CA2164943A1 (it)
DE (1) DE69406665T2 (it)
IT (1) IT1264633B1 (it)
WO (1) WO1995001113A1 (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5491866A (en) * 1993-11-05 1996-02-20 Simonds; James A. Toothbrush
GB2299264B (en) * 1995-03-27 1999-10-20 Naresh Gathani A toothbrush to reduce tooth abrasion and improve efficiency
DE19527859A1 (de) 1995-07-29 1997-01-30 Ctech Ag Mehrzweck-Handgerät nach Art eines Taschenmessers
DE19608226A1 (de) * 1996-03-04 1997-09-11 Kurt Dipl Ing Kessler Zahnbürste mit elastisch angelenkten wechselbarem Bürstenkopf
FR2754437B1 (fr) * 1996-05-21 1999-07-30 Grivon Josette Brosse a dents dite transversale
WO1998032570A1 (de) 1997-01-28 1998-07-30 Ctech Ag Mehrzweck-handgerät
US6779425B2 (en) 2000-11-27 2004-08-24 Ctech Ag Multipurpose handheld implement
FR2784875A1 (fr) * 1998-10-21 2000-04-28 Molkara Shahrokh Shams Brosse a dents a tete rotative monoface et biface
US6553604B1 (en) 2000-03-16 2003-04-29 Gillette Canada Company Toothbrush
US20040177462A1 (en) 2003-03-14 2004-09-16 The Gillette Company Toothbrush head
US7941886B2 (en) 2003-09-19 2011-05-17 Braun Gmbh Toothbrushes
KR200452826Y1 (ko) * 2008-12-17 2011-03-25 유찬웅 펀칭기와 거리제한이 없는 스테이플러가 겸비된 다기능 문구용품
KR101026009B1 (ko) * 2009-06-03 2011-03-30 우정완 회전 칫솔
WO2015121878A1 (en) * 2014-02-13 2015-08-20 BIGNARDI, Luca Toothbrush
JP2017006396A (ja) * 2015-06-23 2017-01-12 文治 松本 歯ブラシ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2446617A1 (fr) * 1979-01-17 1980-08-14 Mocci Cesar Perfectionnements aux brosses a dents
US4333199A (en) * 1980-02-22 1982-06-08 Rosario M Del Toothbrush
DE3425940C2 (de) * 1984-07-13 1987-04-02 Jürgen Dr. 8110 Murnau Schebitz Zahnbürste mit Kugelgelenk

Also Published As

Publication number Publication date
JPH08511967A (ja) 1996-12-17
CA2164943A1 (en) 1995-01-12
AU7073094A (en) 1995-01-24
DE69406665T2 (de) 1998-06-04
IT1264633B1 (it) 1996-10-04
DE69406665D1 (de) 1997-12-11
WO1995001113A1 (en) 1995-01-12
ITMI931413A0 (it) 1993-06-30
ATE159846T1 (de) 1997-11-15
EP0706336A1 (en) 1996-04-17
ITMI931413A1 (it) 1994-12-30

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