EP0453954B1 - Bürste mit Kunststoffborsten, insbesondere Zahnbürste - Google Patents

Bürste mit Kunststoffborsten, insbesondere Zahnbürste Download PDF

Info

Publication number
EP0453954B1
EP0453954B1 EP91106189A EP91106189A EP0453954B1 EP 0453954 B1 EP0453954 B1 EP 0453954B1 EP 91106189 A EP91106189 A EP 91106189A EP 91106189 A EP91106189 A EP 91106189A EP 0453954 B1 EP0453954 B1 EP 0453954B1
Authority
EP
European Patent Office
Prior art keywords
bristles
tuft
toothbrush
individual
bristle
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
EP91106189A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0453954A1 (de
Inventor
Fritz Alfons Rueb
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.)
Frisetta Kunststoff GmbH and Co KG
Original Assignee
Frisetta Kunststoff GmbH and Co KG
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 Frisetta Kunststoff GmbH and Co KG filed Critical Frisetta Kunststoff GmbH and Co KG
Publication of EP0453954A1 publication Critical patent/EP0453954A1/de
Application granted granted Critical
Publication of EP0453954B1 publication Critical patent/EP0453954B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/02—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by pitch, resin, cement, or other adhesives
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/06—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by welding together bristles made of metal wires or plastic materials
    • 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

  • the invention relates to a toothbrush with plastic bristles according to the preamble of claim 1.
  • the high injection pressure means that the plastic gets into the bristle spaces and they are encapsulated in such a way that they lose their necessary suppleness.
  • the bristle tufts fastened with anchors particularly in the case of toothbrushes, result in the bristles in the bundle being pressed together by pressing in and punching the anchor, and the bundle thus becoming relatively stiff overall.
  • a stiff and hard shape of the bristle tuft is required and required in many areas of application, this is usually undesirable for a toothbrush. This is because there is a risk that the tooth neck with the relatively soft tooth enamel will be attacked and damaged by the cleaning movement and application of such a hard brush.
  • the entire bristle bundle can thus continue to protrude approximately perpendicularly from the brush body - but could also be inclined overall - however, the individual bristles are inclined within this bundle, so that they can deflect somewhat at a pressure acting in the axial direction of the bristle tuft and not with their kink resistance press against the body to be cleaned.
  • each individual bristle can exert its cleaning action without, for example, an increased contact pressure, for example, of a thorough user being harmful.
  • the bristles of the tufts of bristles have an approximately matching helix angle with respect to the imaginary circular line.
  • These inclined bristles may well lie approximately on the imaginary cylindrical envelope surface of a cylinder or be arranged tangentially thereto and, despite their oblique position, which roughly corresponds in the circumferential direction of such an imaginary circle, form a largely regular bristle tuft with an approximately constant cross section over its height.
  • the helix angle can be more acute compared to a - imaginary - circular line located on the bristle base, the larger the circle diameter, and the bristles closer to the center of this tuft of bristles can, for example, be at an obtuse helix angle, for example one which happens to be exactly in the center of the Büschels bristle could even be vertical. This is especially true when the bristle bundle formed from inclined bristles is oriented approximately perpendicular to its attachment point or the bristle field plane at the free working ends of the bristles.
  • An embodiment of the invention can consist in that the bristles which are inclined in the circumferential direction of the bristle tufts, preferably the bristles located in the interior of the bristle tufts, optionally partially also run obliquely outwards from the center of the bristle tufts. If the outer bristles of the bristle tuft are not only oriented obliquely in the circumferential direction of an imaginary circle, but also outwards, this results in a tuft of bristles that has a largely constant cross-sectional shape over its height, but somewhat in cross-section towards the free working ends increases.
  • a further embodiment of the invention can consist in that individual bristles are so inclined to each other that they cross in the course of the bristle bundle.
  • individual bristles are so inclined to each other that they cross in the course of the bristle bundle.
  • they could be arranged obliquely to an imaginary circular line, but otherwise they could also initially be inclined inwards in such a way that, like tent poles, they in turn are directed outwards at their free working ends.
  • a distance can be provided between the individual tufts of bristles, in which a part of the bristles, in particular on the outer edge of a tufts of bristles, can escape under pressure on the bristle field.
  • the inclined position of the bristles leads more quickly to a flexible yielding of the individual bristles under a pressure load, so that they can take advantage of the space between the bristle tufts, as a result of which the bristle tufts are dissolved at their working ends.
  • the cleaning pressure can be distributed much better and the individual bristles of the entire bristle field can be optimally distributed over the entire bristle field surface, so that the previous gaps during the cleaning process are eliminated and thus the cleaning pressure is also better distributed.
  • the entire bristle field surface can be more or less evenly occupied by bristle tips during cleaning, so that under certain circumstances the number of tufts of bristles could be reduced without reducing the cleaning effect, but at the same time the surface to be cleaned is treated gently even at high pressure.
  • the bristles of a tuft of bristles arranged approximately on a circular surface can each run obliquely from their starting point on the brush body to their free end and there an analog - imaginary - circle with a preferably matching diameter on one in the circumferential direction cut the offset point.
  • the entire bristle tuft has a certain twist, which is already predetermined on the anchoring of the bristles on the bristle body, but the individual inclined bristle is nevertheless straight. In this way, it can avoid excessive cleaning pressure and still exert its cleaning effect.
  • a modified embodiment can consist in that at least some of the bristles of a tuft of bristles are twisted and preferably run on a helix with a large pitch.
  • An embodiment of the invention of very considerable importance which reinforces the advantages of the inclination of the bristles and can be particularly effective in combination with this inclination, can consist in the fact that the individual bristles of a tuft of bristles have at least two different lengths, the difference in length being a fraction of the length Total bristle length is.
  • the number of longer and shorter bristles can be approximately the same and the bristles of different lengths within each tuft of bristles are preferably distributed approximately evenly mixed with one another.
  • the longer bristles can be 0.2 to 1 millimeter in particular approximately 1/2 millimeter longer than the shorter bristles.
  • the individual bristles can be rounded at their working ends before being connected to one another and / or to the brush body.
  • the individual bristle has a correspondingly gentle effect on sensitive surfaces, and when used with toothbrushes on the gums and tooth necks. Since the individual bristles dodge when the cleaning pressure is too high, a good massage and cleaning effect results in any case without fear of premature wear.
  • a further embodiment of the invention can consist in that the bristles of a bristle tuft are inclined in the circumferential direction thereof with a corresponding oblique direction, but the taper direction of adjacent bristle tufts changes in each case, so that the bristles of a bristle tuft, viewed in their projection, rotate clockwise and those of another bristle tuft run counter-clockwise from bottom to top. This is for some compressive strength when pressing the brush overall advantageous, although the individual bristles evade an excessive pressure load individually. The reaction forces resulting from the inclination of the bristles can at least largely cancel each other out in this way on the brush body.
  • a combination of one or more of the features and measures described above results in a brush which, particularly as a toothbrush, can have a good cleaning and massage effect, but also gently acts on the surface to be cleaned even when the cleaning pressure is excessive, since the individual bristles evade the increased cleaning pressure and at the same time experience a better distribution under the cleaning pressure and no longer become effective in bundles or bundles.
  • bristles of different lengths and inclined bristles also result in evasive movements of different strengths, the shorter bristles opposing somewhat more resistance to increasing cleaning pressure, so that the brush nevertheless has a long service life.
  • the better distribution of the individual bristles in terms of area during the cleaning process means that such a toothbrush is perceived as softer, although a better cleaning effect is to be expected.
  • a toothbrush designated as a whole by 1, the handle of which is not shown, has individual bristle tufts 3 of plastic bristles 4, which stand approximately vertically upright on a brush body 2.
  • the bristles 4 can be fused, glued or welded together at the end of the bristle tufts 3 and / or on the brush body 2.
  • the bristle tufts 3 have an essentially constant circumference or cross section or enveloping circle 5 over their height starting from the brush body 2.
  • the working ends 6 of the bristles 4 form an approximately flat bristle field.
  • Fig. 1 is indicated, in Fig. 4 in a schematic and diagrammatic representation - albeit somewhat exaggerated - that the individual bristles 4 are arranged within their tufts of bristles 3 with respect to the plane formed by the bristle field and also with respect to the brush body 2 holding them, and also in relation to one another.
  • the mutual inclination of the individual bristles 4 of a bristle tuft 3 is not recognizable in the schematic representation of FIG. 1, but is explained and described in more detail with reference to FIG. 4.
  • Fig. 4 it can be seen that the imaginary circle 5 or 7 arranged on a concentric to the central axis of the bristle tuft 3 (only two such imaginary circles are shown in Fig. 4, although according to Fig. 2, of course, much more such circles within the Circumference of a tuft of bristles 3 could be drawn) adjacent bristles 4 are each inclined in the corresponding direction with respect to this circle 5 or 7, but then each have an approximately identical helix angle with respect to the imaginary circular line. This results in a somewhat regular arrangement of adjacent bristles on each circle 5 or 7, but it is clear that the bristles opposite one another on such a circle 5 or 7 are also inclined relative to one another.
  • the helix angle 8 can be more acute with respect to the circular line 5 or 7 located on the bristle base, the larger the circular diameter.
  • the bristles closer to the center of the tufts of bristles can thus be at an obtuse helix angle 9, as is indicated in FIG. 4, where the helix angle 8 on the larger circle 5 is somewhat more acute, but the helix angle 9 on the more inner circle 7 is more so right angle is approximated.
  • a bristle 4 theoretically arranged in the center of the bristle tuft 3 would expediently not run obliquely, but to a certain extent as the axis of the entire bristle tuft in its main direction, in the exemplary embodiment So perpendicular to the brush body 2 or the bristle field.
  • the bristle bundle 3 formed from inclined bristles 4 is expediently oriented overall approximately perpendicular to its attachment point on the brush body 2 or to the bristle field level.
  • Fig. 4 thus illustrates that the bristles 4 of a bristle tuft 3 arranged approximately on a circular surface each run obliquely from their starting point on the brush body 2 to their free end 6 and there there an analog circle 5a or 7a with a preferably matching diameter to the circles 5 and 7 cut at a point offset in the circumferential direction.
  • the bristles 4 which are inclined in the circumferential direction of the bristle tuft 3, are also provided would also partially run obliquely outwards or inwards.
  • the entire bristle bundle 3 could also have a frustoconical outer contour.
  • the individual bristle 4a is also inclined outwards in this way, because it starts at the lower end from the circle 7 and at its free end 6 crosses the circle 5a located further out. In this way, however, this bristle 4a remains within of the approximately cylindrical bristle tuft 3.
  • FIGS. 1 and 2 there is a spacing between the individual bristle tufts 3, in which a part of the bristles 4 located, in particular, on the outer edge of a bristle tuft 3, is viewed in a manner that is conventional per se, considering the circles 5 and 5a of FIG as the outermost boundary of a tuft of bristles 3, that is to say the bristles 4 connecting the circles - can dodge under pressure on the bristle field.
  • FIG. 3 shows how the individual bristles 4 can escape into the spaces between the individual bristle tufts 3 when pressure is exerted on the bristle field, which can still be seen in FIG. 2 in the unloaded state. This then results in a practically uniform distribution of the originally strongly bundled bristles 4 over the entire bristle field and even somewhat beyond its original outer circumference. This evasive movement is particularly favored by the inclination of the bristles 4.
  • the inclination and the evasive movement which may increase the inclination, is harmless because the individual bristles 4 - before connection to each other and / or with the brush body 2 - may have been rounded at their working ends 6, so that they Even in an inclined position, gentle contact with gums, tooth necks and similar sensitive areas results.
  • Fig. 1 it is shown that all bristles of all bristle tufts are inclined in the same direction in the circumferential direction of a bristle tuft.
  • the bristles 4 of a bristle tuft 3 are each arranged in the circumferential direction with a corresponding inclined position, as shown in FIG. 4, but that the taper direction of adjacent bristle tufts changes in each case, i.e. in a neighboring bristle tuft 3 the helix angles 8 and 9 are just opposite 4 could be arranged so that the bristles 4 of a bristle tuft 3, seen in their projection (approximately according to FIG.
  • the brush 1 with plastic bristles which is particularly suitable as a toothbrush, has bristle tufts 3 composed of the individual bristles 4, to which the individual bristles 4 can be fused, glued or welded.
  • the individual bristles 4 are arranged obliquely within their bristle tuft 3 against each other and with respect to the plane formed by the bristle field and / or with respect to the brush body 2 holding them, so that when they are perpendicular to the entire bristle tuft 3 they individually escape somewhat to the side and so this pressure give way while increasing the effective area. This effect can be improved or increased by individual bristles 4 of different lengths within a bristle tuft 3.

Landscapes

  • Brushes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP91106189A 1990-04-27 1991-04-18 Bürste mit Kunststoffborsten, insbesondere Zahnbürste Expired - Lifetime EP0453954B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4013564 1990-04-27
DE4013564A DE4013564C1 (enrdf_load_stackoverflow) 1990-04-27 1990-04-27

Publications (2)

Publication Number Publication Date
EP0453954A1 EP0453954A1 (de) 1991-10-30
EP0453954B1 true EP0453954B1 (de) 1994-05-18

Family

ID=6405275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106189A Expired - Lifetime EP0453954B1 (de) 1990-04-27 1991-04-18 Bürste mit Kunststoffborsten, insbesondere Zahnbürste

Country Status (7)

Country Link
EP (1) EP0453954B1 (enrdf_load_stackoverflow)
JP (1) JPH05123219A (enrdf_load_stackoverflow)
AT (1) ATE105681T1 (enrdf_load_stackoverflow)
AU (1) AU7418091A (enrdf_load_stackoverflow)
CA (1) CA2041404A1 (enrdf_load_stackoverflow)
DE (2) DE4013564C1 (enrdf_load_stackoverflow)
ES (1) ES2055939T3 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645224A1 (de) * 1996-11-02 1998-05-07 Hans Raab Reinigungswerkzeug
JP4076400B2 (ja) * 2002-08-28 2008-04-16 花王株式会社 歯ブラシ
US20110030160A1 (en) * 2009-08-06 2011-02-10 Mcneil-Ppc, Inc. Bristle configuration
DK2910143T3 (da) * 2014-02-21 2020-03-02 Procter & Gamble Hoved til et mundplejeredskab
ES2646278T3 (es) * 2015-02-19 2017-12-13 The Procter & Gamble Company Cabezal para un utensilio de cuidado bucal y utensilio de cuidado bucal

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1273482B (de) * 1964-05-15 1968-07-25 Sunbeam Corp Zahnbuerste
US3263258A (en) * 1965-04-01 1966-08-02 Lever Brothers Ltd Toothbrush
DE8202897U1 (de) * 1982-02-04 1982-06-16 Fa. M. U. C. Schiffer, 5466 Neustadt Zahnbuerste mit schraeg gegeneinander gestellten borstenbloecken
US4884311A (en) * 1988-05-27 1989-12-05 Harbert S Gergory Dental appliance

Also Published As

Publication number Publication date
EP0453954A1 (de) 1991-10-30
DE4013564C1 (enrdf_load_stackoverflow) 1991-07-11
CA2041404A1 (en) 1991-10-28
ATE105681T1 (de) 1994-06-15
ES2055939T3 (es) 1994-09-01
DE59101639D1 (de) 1994-06-23
AU7418091A (en) 1991-11-07
JPH05123219A (ja) 1993-05-21

Similar Documents

Publication Publication Date Title
EP1646299B1 (de) Handzahnbürste
EP1423029B2 (de) Zahnbürste mit borstenfeld
EP0269665B1 (de) Zahnbürste
DE69629062T3 (de) Zahnbürste
EP1993398B1 (de) Zahnbürste sowie zahnbürstenkopf hierfür
DE10331369B4 (de) Zahnbürste
EP2449918B1 (de) Bürstenkopf für eine Elektrozahnbürste
EP0848593A1 (de) Zahnbürste
EP1001693A1 (de) Zahnbürste
DE19919196C1 (de) Zahnbürste
WO2007033745A1 (de) Zahnbürstenkopf
DE69628347T2 (de) Zahnbürste
EP0453954B1 (de) Bürste mit Kunststoffborsten, insbesondere Zahnbürste
DE20213325U1 (de) Bürstenkopf mit im wesentlichen rundem Borstenfeld
DE9016467U1 (de) Bürste mit Kunststoffborsten, insbesondere Zahnbürste
DE19616154A1 (de) Zahnbürste
DE9303673U1 (de) Zahnbürste
EP1239752B1 (de) Verfahren zur herstellung von bürsten und vorrichtung zur durchführung des verfahrens
DE69804910T2 (de) Zahnbürste
EP0516675B1 (de) Zahnbürste
WO2019101711A1 (de) Zahnbürste
EP1774924A1 (de) Bürstenkopf für eine Elektrozahnbürste
DE102023102091A1 (de) Zahnbürste mit flexiblem Zahnbürstenkopf
DE20212945U1 (de) Zahnbürste mit Borstenfeld
DE20213083U1 (de) Zahnbürste mit einem Handgriff und einem länglichen Borstenfeld

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL SE

17P Request for examination filed

Effective date: 19910911

17Q First examination report despatched

Effective date: 19930519

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19940518

Ref country code: BE

Effective date: 19940518

Ref country code: DK

Effective date: 19940518

REF Corresponds to:

Ref document number: 105681

Country of ref document: AT

Date of ref document: 19940615

Kind code of ref document: T

RAP4 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: FRISETTA GMBH KUNSTSTOFFWERKE

REF Corresponds to:

Ref document number: 59101639

Country of ref document: DE

Date of ref document: 19940623

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2055939

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940826

ET Fr: translation filed
EAL Se: european patent in force in sweden

Ref document number: 91106189.3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040316

Year of fee payment: 14

Ref country code: SE

Payment date: 20040316

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20040323

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20040415

Year of fee payment: 14

Ref country code: GB

Payment date: 20040415

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20040429

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050418

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050418

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050419

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050419

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051101

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050418

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051230

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20051101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20051230

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20060317

Year of fee payment: 16

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20050419

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071101

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20080425

Year of fee payment: 18

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090430