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Publication numberUSRE38521 E1
Publication typeGrant
Application numberUS 09/362,355
Publication dateMay 25, 2004
Filing dateJul 28, 1999
Priority dateMar 27, 1991
Fee statusPaid
Also published asCA2106990A1, CA2106990C, DE761124T1, DE9219161U1, DE9219162U1, DE69219766D1, DE69219766T2, DE69232862D1, DE69232862T2, DE69233518D1, DE69233518T2, EP0577656A1, EP0577656B1, EP0761124A1, EP0761124B1, EP1057425A2, EP1057425A3, EP1134004A2, EP1134004A3, EP1134004B1, US5651158, WO1992017093A1
Publication number09362355, 362355, US RE38521 E1, US RE38521E1, US-E1-RE38521, USRE38521 E1, USRE38521E1
InventorsHans Halm
Original AssigneeLingner & Fischer Gmbh
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Toothbrush with resiliently flexible head
US RE38521 E1
Abstract
A toothbrush having a handle and at one end having a bristle-bearing head which is in the form of one or more segments which are flexibly and/or resiliently linked to each other. Optionally, the head may also be flexibly and/or resiliently linked to the handle. The grooves between the linked segments of the head are wholly or partly filled with an elastomeric material. In one aspect, the bristle-bearing head of the toothbrush is attached to the handle by a frame which wholly or partly surrounds the head and is an integral extension of the handle.
Images(6)
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Claims(16)
I claim:
1. A toothbrush comprising:
a handle, and at one end thereof,
a bristle-bearing head made of plastics material having a face and an opposite face,
the head having at least two segments flexibly and resiliently linked to each other and having at least one of the segments being bristle bearing,
the head having bristles mounted on one face of the head and the opposite face of the head having at least one groove formed therein,
each of said at least one groove being formed between the segments such that the segments form a land on either side of a groove, and each groove containing an elastomeric material different from said plastics material.
2. A toothbrush according to claim 1 wherein said at least one groove is aligned transverse to the longitudinal axis of the toothbrush.
3. A toothbrush according to claim 1 wherein the toothbrush comprises only one groove.
4. A toothbrush according to claim 1 wherein the depth of said at least one groove, width of said at least one groove, or the frequency per unit distance of said at least one groove along the length or across the width of the head, varies with distance along the head.
5. A toothbrush comprising
a handle, and at one end thereof,
a bristle bearing head made of plastics material having a face from which bristles extend and an opposite face,
the head comprising at least two segments flexibly and resiliently linked to each other and having at least one of the segments being bristle bearing,
the head having bristles mounted on one face of the head and the opposite face of the head having at least one groove formed therein,
each of said at least groove being formed between the segments such that the segments form a land on either side of a groove, and each groove containing an elastomeric material,
the head further including a frame integral to the handle and wholly surrounding the segments whereby at least one space is formed between the frame and the segments,
said at least one space containing a flexible and resilient material therein.
6. A toothbrush according to claim 5 wherein the head is linked to the frame in at least one point within a plane that includes the longitudinal axis of the toothbrush.
7. A toothbrush according to claim 5 wherein the head is linked to the frame in at least one point within a plane which is 90 degrees to the longitudinal axis of the toothbrush.
8. A toothbrush according to claim 5, wherein said at least one space between the frame and the segments contain a flexible and resilient thin diaphragm.
9. A toothbrush according to claim 5 wherein said at least one space between the frame and the segments contain a flexible and resilient elastomeric material.
10. A toothbrush comprising
a handle, and at one end thereof,
a bristle bearing head made of plastics material having a face from which bristles extend and an opposite face,
the head comprising at least two segments flexibly and resiliently linked to each other and having at least one of the segments being bristle bearing,
the head further including a frame integral to the handle,
stalk-like bridging portions extending inwardly from said frame to the segments for linking said segments to said frame, whereby spaces are formed between the segments, and between the segments and the frame, and
said spaces containing an elastomeric material.
11. A toothbrush comprising
a handle, and at one end thereof,
a bristle bearing head made of plastics material having a face from which bristles extend and an opposite face,
the head comprising at least two segments flexibly and resiliently linked to each other and having at least one of the segments being a bristle carrier,
the head further including a frame integral to the handle,
said head comprising at least one chain of bristle carriers being flexibly and resiliently linked to each other and being linked at least at one end to said frame,
said head having at least one space being formed between the frame and said at least one chain of bristle carriers,
said at least one space being filled with a flexible and resilient material.
12. A toothbrush according to claim 5, 10 or 11 including bristles borne by and extending from the frame.
13. A toothbrush comprising:
a handle, and at one end thereof,
a bristle-bearing head made of plastics material having a face and an opposite face,
the head having at least two segments flexibly and resiliently linked to each other and having at least one of the segments being bristle bearing,
the head having bristles mounted on one face of the head and having at least one groove formed therein,
each of said at least one groove being formed between the segments such that the segments form a land on either side of a groove, and each groove containing an elastomeric material different from said plastic material, the elastomeric material controlling the degree of flexibility and resilience in the linkage between the segments.
14. The toothbrush of claim 13, wherein the toothbrush comprises only one groove.
15. The toothbrush of claim 13, wherein at least two segments are bristle bearing.
16. The toothbrush of claim 13, wherein said at least one groove is on said opposite face.
Description

This is a continuation of application Ser. No. 08/306,842, filed Sep. 14, 1994, now abandoned, which is a continuation of 08/122,240, filed Sept. 27, 1993 now abandoned, which is a 371 of PCT/EP92/00696, filed Mar. 25, 1992.

The present invention relates to a novel article, being a toothbrush, and in particular to a toothbrush having a flexible zone in its head.

When brushing one's teeth, particularly with a conventional toothbrush having a rigid head, it can be difficult to reach all parts of the teeth in order to brush the teeth satisfactorily. It is also difficult with such brushes to maintain an optimum angle between the teeth and the head of the toothbrush for effective brushing and cleaning, necessitating continual repositioning of the brush in the hand throughout the brushing process. Consequently, there is a tendency to apply excess brushing pressure to some teeth and insufficient pressure to other teeth. The resultant combination of excess brushing pressure and inadequate cleaning or bad cleaning technique can result in damage to both teeth and gums.

Although angled-head toothbrushes have been suggested as an attempt to overcome some of these difficulties, they do not satisfactorily meet all the requirements.

Proposals have also been made for toothbrushes having flexible handles or flexible zones in their handles to assist in accommodating the orientation of the bristle-bearing head of the brush of the profile of an individual's teeth and gums. Such toothbrushes are disclosed for example in EP-A-0336641, U.S. Pat. No. 4,520,526, DE-OL-3640898, DE-OL-3612108, CH-0155730 and IT-485723.

In some circumstances it is desirable to further improve the flexibility of the head relative to the direction of the handle of the toothbrush.

Accordingly the present invention provides a toothbrush, having a handle and at one end thereof a bristle-bearing head, wherein the head is in the form of two or more segments flexibly and resiliently linked to each other and/or to the handle, one or more of the segments being bristle-bearing.

The toothbrush head of this invention, being flexible, can flex under the action of toothbrushing so as to accommodate itself to the differing profiles of individual users' teeth. In particular, teeth generally lie in a “C” shaped curve within the upper and lower jaw, the row of teeth consequently having a convex outer curve and a concave inner curve. The flexible head of the tooth-brush of the inventors can bend to accommodate itself to both the convex and concave curves of the teeth generally better than would be the case with a conventional rigid-headed toothbrush.

In a first embodiment of this invention, the head may be formed as an integral extension to the handle. In a second embodiment the handle may be extended into the form of a frame wholly or partly surrounding the head, and to which the head is linked, preferably flexibly and resiliently. Within such a frame the head may be integrally formed, or may be made as a separate part and fastened into the frame.

The head may be in a variety of segmented forms. For example in a first form, suitable both for when the head is formed as an integral extension of the handle or when the head is surrounded by a frame, the head may have bristles mounted in one face, and the opposite face may have one or more grooves therein. In such a head the lands between the grooves comprise the segments, and flexible resilient linking occurs about the thinned regions of head material at the bottom of the grooves.

In this first form of head, one or more of the grooves should be transverse to the longitudinal axis of the handle, to provide flexibility of the head in a plane containing this axis. Additionally or alternatively there may be one or more grooves aligned parallel to the longitudinal axis of the handle and/or one or more grooves aligned. Preferably there are only transverse grooves. Suitably there need be only one such transverse groove.

In this first form of head, the depth and/or width of the grooves, and/or the frequency of the grooves per unit distance, along the length and/or across the breadth of the head may be varied. By variation in this way the flexibility and/or resilience of linking and consequently of the whole head along the length and/or across the breadth of the head may be varied. For example by having deeper grooves at the end of the head furthest from the handle, the head can be made to be more flexible at this end. Preferably flexibility and/or resilience only along the length of the head is controlled in this way.

In this first, grooved, form of head, one or more of the grooves may be wholly or partly filled with an elastomeric material. In this way too the flexibility and/or resilience of the head may be varied and contamination of the grooves by for example toothpaste deposits etc may be reduced or avoided completely. The colour of the elastomeric material may be the same as that of the material of the head, or it may be different thereby achieving a distinctive stripped or otherwise patterned appearance.

When the head is of the above described grooved form, and is wholly or partly surrounded by a frame, the frame preferably completely surrounds the head. The head may be linked to the frame handle at various points around the perimeter of the head, but is preferably linked to the frame at one or more points in a plane that includes the longitudinal axis of the handle. The head may alternatively or additionally be linked at points in a plane at 90° to the longitudinal axis of the handle. These links may be bridging portions of the material of the head or frame, and by varying the dimensions of these bridging portions the degree of flexibility and/or resilience of the linking may be varied. For example the degree of flexibility and/or resilience of these links can be made such that the head may be made to rock about these links, in addition to flexing.

In a second segmented form for example, suitable for use when the head is surrounded by a frame, the head is in the form of one or more chains of bristle carriers, flexibly and resiliently linked to each other, and linked at least one end of the chain to the frame. The linking may be by bridging portions of the material of the head or frame, and by varying the dimensions of the degree of flexibility and/or resilience of the linking may be varied.

In a third segmented form for example the head may be in the form of segments which are not joined to each other but are flexibly and resiliently linked to the handle or to the frame. In one such embodiment, the head may be in the form of segments linked to the handle or to the frame by thin spines, e.g., stalk-like bridging portions for example oriented inwordly from a surrounding frame. By varying the dimensions of these stalk-like bridging portions the degree of flexibility and/or resilience of the linking may be varied.

In all forms of the head in which a frame is present, the frame may bear bristles, which may have the same or different distribution, length, orientation, colour or stiffness to those on the head. Conveniently bristles when present on the frame may be shorter than those on the head.

The bristles may be uniformly distributed over the head, and the frame, if present, but preferably the bristles are distributed in discrete tufts. There may be one or more tufts per segment. In one embodiment of a head which is in the form of chains of linked bristle carriers, each carrier may carry one or two tufts of bristles.

In all forms of the toothbrush of this invention in Which there is a frame, the space(s) between the head and the frame may be partly or wholly filled with a flexible and/or resilient material, which may be an elastomeric material and/or may be in the form of a thin diaphragm. By varying the degree of such filling and the material used the degree of flexibility and/or resilience of the head may be varied.

The toothbrush (i.e. the handle, head and bristles) of the invention may be made of materials which are conventional in the manufacture of toothbrushes especially, plastics materials. Suitable plastics materials include, for example, polyamides and polypropylenes. An example of a suitable polyamide is the material ‘Ultramid B3’ (Trade mark, marketed by BASF, Federal Republic of Germany), having a modulus of elasticity (DIN 53452) of 3000. An example of a Suitable polypropylene is the material ‘Novolene 1100 HX’ (Trade mark, marketed by BASF, Federal Republic of Germany), which is a homopolymer and has a modulus of elasticity (DIN 53457) of 1400. Such a polypropylene homopolymer may optionally be used in admixture with a polypropylene block co-polymer, such as the material ‘Novolene 2500 HX’ (Trade mark, marketed by BASF, Federal Republic of Germany), for example in an 80:20 mixture by weight (1100 HX: 2500 HX).

The handle may be of a shape which is conventional in the manufacture of toothbrushes. It may however be advantageously made in the form described in EP-0336641-A, the contents of which are included by reference, more particularly as described in column 1 lines 36″49 thereof.

In use, the toothbrush of this invention may be used for cleaning the teeth by an entirely conventional toothbrushing hand action, preferably in a manner recommended by dental health authorities. The toothbrush of the invention may also be used in electrically driven toothbrushes.

The invention will now be described by way of example only, with reference to the accompanying drawings, in which:

FIG. 1 shows a toothbrush head integral with the handle and divided into segments by grooves.

FIG. 2 shows a toothbrush head divided into segments by grooves, and within a frame extension of the handle.

FIG. 3 shows a variant of the head of FIG. 2 in which the head is divided into 2 segments by a single groove.

FIG. 4 shows a toothbrush head in the form of a chain of linked bristle carriers within a frame extension of the handle.

FIG. 5 shows a toothbrush head in the form of segments linked to a frame extension of the handle by stalk-like bridging portions.

Referring to FIGS. 1A, 1B, 1C and 1D, a toothbrush head (11) is formed integrally at one end of a handle (12). The head (11) and handle (12) are shown in an underside view in FIG. 1A, in a top view in FIG. 1B and in longitudinal section about the line A—A in FIGS. 1C and 1D.

The head (11) has two substantially parallel faces, and in a top face are mounted bristles distributed in a plurality of tufts (13). The lower face is divided by a series of parallel grooves (14) transverse to the longitudinal axis A—A of the handle, into segments (15) being the lands between the grooves (14), leaving a thinned and consequently flexible and resilient region of head material (16) at the bottom of the grooves (14). The bristles (13) are mounted in these segments (15).

In FIGS. 1C and 1D the depth of the grooves (14) is shown to decrease in the direction towards the handle (12), the deepest grooves being closest to the end of the head furthest from the handle. This results in graded flexibility of the head (11), the part of the head (11) furthest from the handle (12) being the more flexible by virtue of the thinner head material (16) at the bottom of the grooves (14) in this area.

In FIGS. 1E and 1F the grooves (14) are partly filled with an elastomeric material (17), which is of a different colour to the head material, imparting a striped appearance to the underside of the head.

In FIGS. 1D and 1F the head (11) is shown as flexing under the application of pressure at the point indicated by the arrow, into a convex curve of bristle tufts (13), accommodating itself to the curve of the inner side of the line of the teeth to assist thorough cleaning, whilst its resilience assists gentle cleaning.

Referring to FIGS. 2A, 2B, 2C, 2D, 2E, 2F and 2G, a toothbrush head (21) is surrounded by a frame (22) extension integrally formed at one end of a handle (23), which are shown in an underside view in FIG. 2A, in a top view in FIG. 2B, in sections about the line A—A in FIGS. 2C, 2E and 2G, in a cross section about the line B—B in FIG. 2D, and in an overall side view in FIG. 2F.

The head (21) is flexibly and resiliently linked to the frame (22) by bridging portions (24) of thin head/handle material, at two points in line with the longitudinal axis of the head (21) and frame (22), the upper part of which may be closed with a thin diaphragm (not shown) of elastomeric material.

The head (21) has a construction similar to that of the head shown in FIG. 1, i.e. it has two substantially parallel faces, in a top face being mounted tufts (26) of bristles, the lower face being divided into segments (27) by lateral grooves (28).

In FIG. 2G, the grooves (28) are shown as being partly filled with an elastomeric material (29) of a different colour to that of the head material, imparting a striped appearance to the underside of the head (21).

In FIGS. 2D and 2E of the head (21) is shown as flexing under the application of pressure of the point indicated by the arrow in FIG. 2E, into a concave curve of bristle tufts (26), accommodating itself to the outer side of the line of teeth. Furthermore the ability of the head (21) to flex in this concave manner contributes to a gentle tooth-cleaning action. In FIG. 2D the application of pressure of the point indicated by the arrow has resulted in rocking of the head (21) about the axis between the two bridging portions (24), to assist in accommodating the head (21) to the shape and orientation of the teeth.

Referring to FIGS. 3A, 3B, 3D, 3E and 3F, a toothbrush head (31) is surrounded by a frame (32) extension integrally formed with a handle (33) which are shown in an underside view in FIG. 3A, in a top view in FIG. 3B, in a longitudinal section about the line A—A in FIGS. 3C, 3D and 3F and in an overall side view in FIG. 3E.

The head (31) is flexibly and resiliently linked to the frame (32) by bridging portions (34) of thin head/handle material, at two regions in line with the longitudinal axis of the head (31), leaving a narrow gap (35) between the head (31) and the frame (32), the upper part of which may be closed with a thin diaphragm (not shown) of elastomeric material.

The head (31) has a construction similar to that of the head of FIG. 2, with an upper face having tufts (36) of bristles mounted therein. The lower face is divided into two segments (37) by a single lateral groove (38).

In FIG. 3F, the single lateral groove (38) is shown partly filled with an elastomeric material (39) of a colour different to that of the head material, imparting a striped appearance to the underside of the head (31).

In FIG. 3D, the head (31) is shown as flexing under the application of pressure at the point indicated by the arrow into a concave fold of bristle tufts (36) accommodating itself to the outer side of the line of the teeth.

The two bridging portions (34) are wider than those shown in FIG. 2, and hence the head (31) does not so readily undergo rocking motion about these bridging portions (34) as does the head of FIG. 2.

Referring to FIGS. 4A, 4B, 4C, 4D, 4E and 4F, a toothbrush head (41) is surrounded by a frame (42) extension of a handle (43), which are shown in an underside view in FIG. 4A, in a top view in FIGS. 4B and 4F, in longitudinal section about line A—A in FIGS. 4C and 4D and in an overall side view in FIG. 4E.

The head (41) is in the form of a series of bristle carriers (44) which are flexibly and resiliently linked by thin bridging portions (45) to each other and to the frame (42). The bristle carriers (44) carry one or two tufts (46) of bristles. More tufts (47) of bristles are mounted on the frame (42) in an outer ring of tufts (47) which are shorter than tufts (46).

Within frame (42) there is a space (48) around the chain of bristle carriers (44), which in FIG. 4F is shown filed with an elastomeric material (49) which is of a different colour to that of the frame (42) and bristle carriers (44).

In FIG. 4D the head (41) is shown as flexing under the application of pressure at the point indicated by the arrow in FIG. 4D into a concave curve of tufts (46) accommodating itself to the outer side of the line of the teeth. The linking of individual tufts (46) in this way assists towards a very gentle tooth cleaning action.

Referring to FIGS. 5A, 5B, 5C, 5D, 5E, 5F and 5G, a toothbrush head (51) is surrounded by a frame (52) extension of a handle (53), which are shown in an underside view in FIG. 5A, in a top view in FIGS. 5B and 5F, in longitudinal section view about line A—A in FIGS. 5C, 5E and 5G, and in a cross sectional view in FIG. 5D. The overall sideways appearance of this toothbrush is identical to FIG. 2F.

The head (52) is in the form of a series of segments (54), which are flexibly and resiliently linked by stalk-like portions (55) to the frame (52), leaving a narrow gap (56) between the head (51) and the frame (52), and between the segments (54). The segments (54) carry one or more tufts (57) of bristles.

In FIGS. 5F and 5G the gap (56) is shown as being partly filled with an elastomeric material (58) which is of a different colour to that of the segments (54) and the frame (52).

In FIGS. 5D and 5E the head (51) is shown as flexing under the action of pressure of the point indicated by the arrow into a concave curve of tufts (57) accommodating itself to the outer side of the line of the teeth.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US759490Dec 8, 1902May 10, 1904Florence Mfg CompanyTooth-brush.
US914501Apr 6, 1908Mar 9, 1909Donald MceachernTooth-brush.
US1327807Oct 26, 1918Jan 13, 1920Burleigh Paul BToothbrush
US1466723Nov 12, 1921Sep 4, 1923Riichiro IzawaToothbrush
US1924337Aug 31, 1932Aug 29, 1933 troupa
US1927365Mar 15, 1933Sep 19, 1933Natal FrolioToothbrush
US1928328Nov 25, 1931Sep 26, 1933Erik Dempster LindegrenToothbrush
US2003243Jul 29, 1933May 28, 1935Ann WatsonToothbrush
US2172624Aug 25, 1937Sep 12, 1939Robert Gabriel Romani YTooth brush
US2254365Jun 6, 1939Sep 2, 1941Griffith Edward EConvertible toothbrush
US2266195Dec 13, 1938Dec 16, 1941Hallock Robert LayToothbrush
US2438268Jun 3, 1946Mar 23, 1948Louis R BresslerFlexible bristle head toothbrush
US2443297Feb 8, 1947Jun 15, 1948Bressler Louis RToothbrush
US2631320May 12, 1950Mar 17, 1953Bressler Louis RToothbrush
US2650383Mar 7, 1952Sep 1, 1953Bressler Louis RToothbrush with a flexible head
US2676350Mar 16, 1953Apr 27, 1954Stanley Home Products IncToothbrush with a flexible head
US2685703Apr 27, 1949Aug 10, 1954Edward F DellenbachToothbrush
US2722031Jun 21, 1952Nov 1, 1955Bressler Louis RBrush having relatively movable bristle carrying sections
US2730747Jun 21, 1952Jan 17, 1956Bressler Louis RBrush having relatively movable bristle carrying sections
US2807820Jul 1, 1952Oct 1, 1957Dinhofer MiltonFlexible brush head and means to retain it in a predetermined position
US2864111Feb 10, 1956Dec 16, 1958Charles RotceigTooth brushes
US3000030Jun 13, 1958Sep 19, 1961Du PontBrush
US3152349Jul 22, 1963Oct 13, 1964Du PontToothbrush
US3188672Dec 18, 1963Jun 15, 1965Johnson & JohnsonBrush
US3253292May 15, 1964May 31, 1966Arthur M HerschensohnHair brushes
US3493991Aug 24, 1967Feb 10, 1970Giovanni Sassoli De Bianchi SResilient tooth brush with adjustable pressure point
US3616170Jun 1, 1970Oct 26, 1971Addison W Closson JrFoamed sheet for making stiffening elements
US3805986Feb 17, 1971Apr 23, 1974LabazContainers
US3821333Mar 21, 1973Jun 28, 1974American Optical CorpGasket for lens mold from a blend of epdm and ethylene/vinyl acetate copolymer
US3992958Nov 21, 1974Nov 23, 1976Pneumatiques, Caoutchouc Manufacture Et Plastiques Kleber-ColombesTransmission belt
US4263691Mar 7, 1979Apr 28, 1981Seree PakarnsereeBrush
US4488328Jan 24, 1983Dec 18, 1984Hyman Richard MFloating head toothbrush
US4520526Jun 22, 1984Jun 4, 1985Peters Charles WResiliently flexible toothbrush
US4575894Nov 2, 1984Mar 18, 1986Joy StevensVertical action tooth brush
US4654922May 28, 1985Apr 7, 1987Chen Horng YBrush with universal joints
US4691405Jul 29, 1985Sep 8, 1987Reed Joseph CToothbrush having adjustable bristle-mounted tabs
US4712267Dec 4, 1986Dec 15, 1987Cheng Peter S CConvertible toothbrush
US4776054Mar 4, 1987Oct 11, 1988Samuel RauchToothbrush
US5052071Mar 29, 1989Oct 1, 1991Lingner+Fischer GmbhToothbrush with displaceable head
US5054154Oct 17, 1989Oct 8, 1991M & C Schiffer GmbhToothbrush with flexible head
US5114214Dec 13, 1988May 19, 1992Rolf BarmanProcess for producing tooth brushes and blanks for use for same
US5946758 *Jun 24, 1997Sep 7, 1999Colgate-Palmolive CompanyToothbrush having contouring multi-component head with peel-resistant joint and limited flexibility
US5946759 *Jan 17, 1997Sep 7, 1999The Procter & Gamble CompanyBrush head
US5991958 *May 29, 1998Nov 30, 1999Colgate-Pamolive CompanyContouring toothbrush head
US6073299 *Jul 12, 1999Jun 13, 2000Colgate-Palmolive CompanyContouring toothbrush head
US6178582 *Aug 22, 1996Jan 30, 2001Smithkline Beecham Consumer Healthcare GmbhToothbrush comprising a resilient flex region
US6219874 *Jul 12, 1995Apr 24, 2001The Procter & Gamble Co.Resiliently flexible bristle bearing head toothbrush
US6314606 *Oct 22, 1999Nov 13, 2001Colgate-Palmolive CompanyContouring toothbrush head
US6327735 *Feb 17, 1998Dec 11, 2001Smithkline Beecham Consumer Healthcare, GmbhPower tip toothbrush with ball joint
US6408476 *Jan 17, 1997Jun 25, 2002The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
US6442786 *Jan 25, 2001Sep 3, 2002Smithkline Beecham Consumer Healthcare GmbhToothbrush comprising a resilient flex region
US6442787 *Jul 3, 2001Sep 3, 2002Colgate-Palmolive CompanyContouring toothbrush head
US6505373 *Apr 18, 2001Jan 14, 2003The Procter & Gamble CompanyToothbrush
USD200395Jul 29, 1963Feb 23, 1965 Fig.j figure
USD302492Dec 30, 1987Aug 1, 1989 Toothbrush
CA508048ADec 14, 1954Louis R BresslerToothbrush
CA508049ADec 14, 1954Louis R BresslerToothbrush with a flexible head
CA520692AJan 17, 1956Edward F DellenbachTooth brush
CH460705A Title not available
DE353949CJun 1, 1922Hermann GernertHilfsvorrichtung zum Antrieb zahnaerztlicher Bohrgeraete o. dgl.
DE393882CJun 14, 1923Apr 19, 1924Otto Honnef DrZahnbuerste
DE1233821BOct 2, 1964Feb 9, 1967Du PontZahnbuerste
DE2500132A1Jan 3, 1975Jul 8, 1976Ludwig EngelhardtPflegekopf fuer elektrische zahnpflegegeraete
DE3628722A1Aug 23, 1986Feb 25, 1988Schlerf Coronet WerkeDental cleaning device
DE3737223A1Nov 3, 1987May 18, 1989Heinrich SchaiperToothbrush
DE3840136C1Nov 29, 1988May 17, 1990Blendax Gmbh, 6500 Mainz, DeTitle not available
DE3923495C1Jul 15, 1989Jan 24, 1991M + C Schiffer Gmbh, 5466 Neustadt, DeTitle not available
EP0336641A2Mar 30, 1989Oct 11, 1989Lingner + Fischer GmbHToothbrush having a flexible handle
EP0604425A1Mar 21, 1992Jul 6, 1994Lingner & Fischer GmbhToothbrush having a flexibly linked zone in its head.
FR442832A Title not available
FR707727A Title not available
FR1524055A Title not available
FR2621466A2 Title not available
FR2652245A1 Title not available
GB647916A Title not available
GB673516A Title not available
WO1991019438A1Jun 17, 1991Dec 26, 1991Humphries Victor AToothbrush
WO1993014671A1Jan 28, 1993Aug 5, 1993Helmut PillerBrush
Non-Patent Citations
Reference
1 *"Ethylene and Polythylene", internet search hit, http://193.51.164.11/htdocs/Monographs/Vol19/Ethyleneand Polyethylene.html, (no date).*
2 *"Guide to Polymer Tradenames", internet search hit, www.geocities.com/spanoudi/tradename.html, Mar. 1998.*
3 *"polymer trade names", internet search hit, www.plasticsusa.com/tradenam.html, (no date).*
4 *"Tradenames", internet search hit, www.iplas.com/tradenam.html, (no date).*
5Advertisement for Eldita's(R) Shoes, "The Next Step for New York," DUP0000072.
6Advertisement for Eldita's® Shoes, "The Next Step for New York," DUP0000072.
7Dupont Alathon(R) Ethylene/Vinyl Acetate Copolymer Resins, Injection Molding Processing Guide, DUP0000038-DUP0000050.
8Dupont Alathon(R) EVA, Blow Molded Puppy, DUP0000068.
9Dupont Alathon(R) EVA, Case History, Item: "Pyrex" Ware Store'n See, DUP0000009.
10Dupont Alathon(R) EVA, Case History, Item: Bellows for Toy Gun, DUP0000012.
11Dupont Alathon(R) EVA, Case History, Item: Blood Syringe, DUP0000004.
12Dupont Alathon(R) EVA, Case History, Item: Bumper Stop Mounting Foot, DUP0000011.
13Dupont Alathon(R) EVA, Case History, Item: Camera Cover, DUP0000008.
14Dupont Alathon(R) EVA, Case History, Item: Corrugated Hose, DUP0000010.
15Dupont Alathon(R) EVA, Case History, Item: Defect Card Holder, DUP0000007.
16Dupont Alathon(R) EVA, Case History, Item: Mouth Guard, DUP0000033.
17Dupont Alathon(R) EVA, Case History, Item: Swimming Pool Filter Gasket, DUP0000006.
18Dupont Alathon(R) EVA, Case History, Item: Swimming Suit Bra Cup, DUP0000005.
19Dupont Alathon(R) EVA, Flying Karpet Toboggan, DUP0000037.
20Dupont Alathon(R) EVA, Processing Notes, "Blow Molding of Alathon(R) EVA Copolymers" DUP0000069-DUP0000071.
21Dupont Alathon(R) EVA, Processing Notes, "The Cost Advantage for EVA Resins in Injection Molding," DUP0000001-DUP0000003.
22Dupont Alathon(R) EVA, Processing Notes, "The Cost Advantage for EVA Resins in Injection Molding," DUP0000034-DUP0000036.
23Dupont Alathon(R) EVA, Shoe Soling Material, DUP0000058.
24Dupont Alathon(R) Polyethylene Resins, "Alathon(R) 3170 Polyethylene Resin for Injection Molding and Extrusion,"DUP0000032.
25Dupont Alathon(R) Polyethylene Resins, "Alathon(R) 3175 Polyethylene Resin for Injection Molding and Extrusion,"DUP0000030-DUP0000031.
26Dupont Alathon(R) Polyethylene Resins, "Alathon(R) 3180 Polyethylene Resin for Injection Molding and Extrusion,"DUP0000028-DUP0000029.
27Dupont Alathon(R) Polyethylene Resins, "Alathon(R) 3185 Polyethylene Resin for Molding and Extrusion,"DUP0000026-DUP0000027.
28Dupont Alathon® Ethylene/Vinyl Acetate Copolymer Resins, Injection Molding Processing Guide, DUP0000038-DUP0000050.
29Dupont Alathon® EVA, Blow Molded Puppy, DUP0000068.
30Dupont Alathon® EVA, Case History, Item: "Pyrex" Ware Store'n See, DUP0000009.
31Dupont Alathon® EVA, Case History, Item: Bellows for Toy Gun, DUP0000012.
32Dupont Alathon® EVA, Case History, Item: Blood Syringe, DUP0000004.
33Dupont Alathon® EVA, Case History, Item: Bumper Stop Mounting Foot, DUP0000011.
34Dupont Alathon® EVA, Case History, Item: Camera Cover, DUP0000008.
35Dupont Alathon® EVA, Case History, Item: Corrugated Hose, DUP0000010.
36Dupont Alathon® EVA, Case History, Item: Defect Card Holder, DUP0000007.
37Dupont Alathon® EVA, Case History, Item: Mouth Guard, DUP0000033.
38Dupont Alathon® EVA, Case History, Item: Swimming Pool Filter Gasket, DUP0000006.
39Dupont Alathon® EVA, Case History, Item: Swimming Suit Bra Cup, DUP0000005.
40Dupont Alathon® EVA, Flying Karpet Toboggan, DUP0000037.
41Dupont Alathon® EVA, Processing Notes, "Blow Molding of Alathon® EVA Copolymers" DUP0000069-DUP0000071.
42Dupont Alathon® EVA, Processing Notes, "The Cost Advantage for EVA Resins in Injection Molding," DUP0000001-DUP0000003.
43Dupont Alathon® EVA, Processing Notes, "The Cost Advantage for EVA Resins in Injection Molding," DUP0000034-DUP0000036.
44Dupont Alathon® EVA, Shoe Soling Material, DUP0000058.
45Dupont Alathon® Polyethylene Resins, "Alathon® 3170 Polyethylene Resin for Injection Molding and Extrusion,"DUP0000032.
46Dupont Alathon® Polyethylene Resins, "Alathon® 3175 Polyethylene Resin for Injection Molding and Extrusion,"DUP0000030-DUP0000031.
47Dupont Alathon® Polyethylene Resins, "Alathon® 3180 Polyethylene Resin for Injection Molding and Extrusion,"DUP0000028-DUP0000029.
48Dupont Alathon® Polyethylene Resins, "Alathon® 3185 Polyethylene Resin for Molding and Extrusion,"DUP0000026-DUP0000027.
49Dupont Magazine, "Boom at the Bottom," pp. 10-11 (Jul.-Aug. 1973), DUP0000053-DUP0000054.
50Dupont Product Information Service, "Casual Footwear Line Features E/VA-Based Sole" (Aug. 3, 1970), DUP0000051-DUP0000052.
51European Opposition and Prosecution History (with index).
52EVA Injection Molded Footwear, DUP0000056-DUP0000057.
53 *Kramer et al., "Toothbrush Comprising a resilient flex region", U.S. Patent Application, publication No. 2002/0017003, Feb. 14, 2002.*
54Letter from D.T. Boyle of the Plastics Department re: Alathon(R)EVA Shoe Sole Program Position Report (Dec. 31, 1973), DUP0000061-DUP0000067.
55Letter from D.T. Boyle of the Plastics Department re: Alathon®EVA Shoe Sole Program Position Report (Dec. 31, 1973), DUP0000061-DUP0000067.
56Letter from D.T. Boyle of the Plastics Department-Polyolefins Divisions, Chestnut Run, DUP0000055.
57Letter from D.T. Boyle of the Plastics Department—Polyolefins Divisions, Chestnut Run, DUP0000055.
58Letter from R.E. Shaw of the Plastics Department re: Alathon(R) Injection Molded Shoe Sole Program (Jan. 8, 1974), DUP0000059-DUP0000060.
59Letter from R.E. Shaw of the Plastics Department re: Alathon® Injection Molded Shoe Sole Program (Jan. 8, 1974), DUP0000059-DUP0000060.
60Paul D. Kohl, "Alathon(R) Ethylene Vinyl Acetate Copolymers Injection Molding," DUP0000013-DUP0000025.
61Paul D. Kohl, "Alathon® Ethylene Vinyl Acetate Copolymers Injection Molding," DUP0000013-DUP0000025.
62Preliminary Injection Pleadings filed by Colgate-Palmolive (with index).
63Preliminary Injection Pleadings filed by SmithKline Beecham (with index).
64Rapra Information Services, Alathon Search, 1972-1999, pp. 1-16.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7962992Dec 23, 2005Jun 21, 2011The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
Classifications
U.S. Classification15/167.1, 15/201, 15/172
International ClassificationA46B7/06, A46B5/00
Cooperative ClassificationA46B2200/1066, A46B7/06, A46B5/0025, B29L2031/425, B29C2045/1693
European ClassificationA46B5/00B1, A46B7/06
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