PT97496A - Teeth brush with adjustable curvature - Google Patents

Teeth brush with adjustable curvature Download PDF

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Publication number
PT97496A
PT97496A PT97496A PT9749691A PT97496A PT 97496 A PT97496 A PT 97496A PT 97496 A PT97496 A PT 97496A PT 9749691 A PT9749691 A PT 9749691A PT 97496 A PT97496 A PT 97496A
Authority
PT
Portugal
Prior art keywords
brush head
flexible
brush
end
cam
Prior art date
Application number
PT97496A
Other languages
Portuguese (pt)
Inventor
Anthony P Piano
Original Assignee
Warner Lambert Co
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 US51580790A priority Critical
Application filed by Warner Lambert Co filed Critical Warner Lambert Co
Publication of PT97496A publication Critical patent/PT97496A/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B7/00Bristle carriers arranged in the brush body
    • A46B7/02Bristle carriers arranged in the brush body in an expanding or articulating manner
    • 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

Description

Description of the invention of WARNER-LAMBERT COMPANY, North American, industrial and commercial, established at 201 Tabor Road, Morris Plains, New Jersey 07950, United States of America, (inventor: Anthony P. Piano, US resident) , to: " TEETH BRUSH WITH ADJUSTABLE CURVATURE ".

DESCRIPTION

BACKGROUND OF THE INVENTION The present invention relates to toothbrushes. More particularly, the present invention relates to adjustable curvature toothbrushes which includes a flexible brush head which is adjustable to convex, concave and straight configurations in order to adapt the toothbrush to the curvature of human teeth. The configuration of the teeth requires that the bristle contour ideal for the toothbrushes for brushing the labial or outer surfaces of the teeth is concave and that the ideal bristle contour for brushing the lingual or inner surfaces of the teeth is convex. Conventional toothbrushes are generally curved or fixed in configuration or are adjustable to indifferent configurations. Fixed-configuration toothbrushes have limited effectiveness and can not properly clean teeth, and convertible toothbrushes are often difficult to manipulate and unreliable. U.S. Patent No. 4,712,267 discloses a convertible toothbrush constituted by an elongated S-shaped shank of shape retaining material, having curved ends of opposing curvature regions, a flexible brush block containing bristles and a mounting means the flexible brush block at 1

rods for longitudinal movement along the length of the rod. The curved portions of the shank bend the flexible block and the bristles in a concave or convex position corresponding to the curved configuration of the shank. U.S. Patent No. 4,649,444 discloses a toothbrush which includes a stem and a hollow head which supports a plurality of tufts. The hollow head further includes an elastically deformable element which pushes the tufts into a generally straight position. When pressure is applied to a tuft while the toothbrush is used, the pressure causes the ends of the tufts to conform to the contour of a given group of teeth, since the tufts are pushed to the hollow head, in degrees variables, against the recovering force of an elastically deformable element. U.S. Patent No. 4,691,405 discloses a toothbrush which includes a rod and a base at the end of the rod consisting of two bristle-containing strips. The strips engage relative to the base such that the bristles mounted on the strips flex to conform to the varying surfaces of the teeth. U.S. Patent No. 4,524,478 describes a toothbrush consisting of two brush heads which extend outwardly from a common elongate rod. The brush heads are attached to the rod by means of curved necks which extend in parallel but in opposite directions and at opposite and equal angles of 452. Each brush head is designed to clean half of the teeth. European Patent Application No. 86107868,1 discloses a toothbrush with two brush heads, a concave and a convex. The brush heads are either integral or slidable and are perpendicular to the opposing ends of their common rod. The brush head with a concave-shaped bristle surface is longer, while the brush head with a convex-shaped bristle surface is shorter. UK Patent No. 8609437 discloses a toothbrush having a brush surface which is mounted at an angle to the plane of the rod and is inclined or curved in a convex shape, as seen in cross-section. 2

The angle of the brush surface adapts to the tooth-gingival junction.

Although prior toothbrushes provide brush heads with some degree of curvature, none of the fixed configuration toothbrushes have limited effectiveness and adjustable curvature toothbrushes are generally difficult to handle and are not reliable. Thus, it is advantageous to provide an adjustable curvature toothbrush which can efficiently clean the teeth and is not difficult to use. The present invention provides such an improved adjustable curvature toothbrush.

SUMMARY OF THE INVENTION The present invention relates to an adjustable curvature toothbrush which includes (a) an elongated rod having an aperture, (b) a cam, attached to the rod, within the aperture, by means of a cam shaft , (c) a cam support engaging with and supporting the cam, (d) a flexible brush head, (e) bristles supported by the brush head, (f) a rigid neck attached to the first end of the head of the brush and at one end of the rod, and (g) a flexible neck attached to a second end of the brush head and to the cam holder thereby adjusting the curvature of the brush head by rotation of the cam. In another embodiment, the present invention relates to an adjustable curvature toothbrush wherein the cam and the cam holder are replaced by a slidable knob. In a further embodiment, the present invention relates to a curvature toothbrush adjustable in the form of a compressible closed arc.

SUMMARY OF THE DRAWINGS

Figures 1 to 4 show a first embodiment of an adjustable curvature toothbrush. which has a flexible brush head, and bristles supported by the brush head, which is adjusted by means of a cam wheel and cam support. 3

Figure 1 shows a profile of the toothbrush with the surface of the bristles in a concave configuration for brushing the labial surface of the teeth. Figure 2 shows a profile of the toothbrush with the surface of the bristles in a convex configuration for brushing the labial surface of the teeth. Figure 3 shows a partial front view of the toothbrush with the surface of the bristles in a concave configuration. Figure 4 shows a partial front view of the toothbrush with the surface of the bristles in a convex configuration.

Figures 5 and 6 show a second embodiment of an adjustable curvature toothbrush having a flexible brush head and bristles supported by the brush head, which is adjustable by means of a meat wheel and a meat holder . Figure 5 shows a partial front view of the toothbrush with the bristle surfaces in a concave configuration. Figure 6 shows a partial front view of the toothbrush with the surface of the bristles in a convex configuration.

Figures 7 and 8 show a variation of the first embodiment of an adjustable curvature toothbrush having an articulated brush head, and bristles supported by the brush head, which is adjusted by means of a meat wheel and bracket of meat. Figure 7 shows a partial front view of the toothbrush with the surface of the bristles in a concave configuration. Figure 8 shows a partial front view of the toothbrush with the surface of the bristles in a convex configuration. 4

Figures 9 and 10 show a variation of the second embodiment of an adjustable curvature toothbrush having a hinged brush head, and bristles supported by the brush head, which is adjusted by means of a cam wheel and bracket of cam. Figure 9 shows a partial front view of the toothbrush with the surface of the bristles in a concave configuration. Figure 10 shows a partial front view of the toothbrush with the surface of the bristles in a convex configuration.

Figures 11 and 13 show a third embodiment of an adjustable curvature toothbrush having a hinged brush head, and bristles carried by the brush head, which is adjusted by means of a slidable knob. Figure 11 shows a partial front view of the toothbrush with the surface of the bristles in a concave configuration. Figure 12 shows a partial front view of the toothbrush with the surface of the bristles in a convex configuration.

Figures 13 and 14 show a fourth embodiment of an adjustable curvature toothbrush having a hinged brush head, and bristles carried by the brush head, which is adjusted by means of a slidable knob. Figure 13 shows a partial front view of the toothbrush with the surface of the bristles in a concave configuration. Figure 14 shows a partial front view of the toothbrush with the surface of the bristles in a convex configuration.

Figures 15 and 16 show a fifth embodiment of an adjustable curvature toothbrush * in the form of a compressible closed arc. Figure 15 shows a front view 5

part of the toothbrush with the surface of the bristles in a concave configuration. Figure 16 shows a partial front view of the toothbrush with the surface of the bristles in a convex configuration.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In order to provide a better understanding of the preferred embodiments, applicants disclose the invention with reference to the above-described figures in which like numerals refer to similar parts of this invention throughout the various figures. The details presented are to illustrate the preferred embodiments of the present invention and no attempt has been made to show the structural details of this invention. The description, in conjunction with the drawings, makes it apparent to those skilled in the art how the various forms of this embodiment may be practiced in practice.

Figures 1 to 4 show a first embodiment of an adjustable curvature toothbrush which includes an elongate shaft 1 having an aperture 2; a cam 3 connected to the rod within the aperture by a cam axis 4; a cam support 5 which engages with and supports the cam; a flexible brush head 6; bristles 7 supported by the brush head; a rigid neck 8 connected to the first end of the brush head and to one end of the shank; and a flexible nose 9 connected to a second end of the brush head and to the cam holder 5. The curvature of the brush head can be adjusted by rotation of the cam.

In this first embodiment the first end of the brush head attached to the rigid neck 8 is a distal end of the cam 3 and the second end of the brush head attached to the flexible neck 9 which is connected to the cam bracket 5 is an adjacent end to the cam. As the cam support is pushed towards the cam by rotation of the cam, the cam support engages the flexible neck to adjust the brush head # 6 in a concave configuration. When the cam support is pushed out of the cam, the cam support engages the flexible neck to adjust

the brush head in a convex configuration.

Figures 5 and 6 show a second embodiment of an adjustable curvature toothbrush.

In this second embodiment, the first end of the brush head attached to the rigid neck 10 is an end adjacent the cam 3 and the second end of the brush head attached to the flexible neck 11, which is attached to the cam support 12, is a away from the meat. When the cam support is pushed towards the cam by rotation of the cam the cam support engages the flexible neck to adjust the head of the brush in a convex configuration. When the cam support is moved away from the cam, the cam support engages the flexible neck to adjust the brush head in a concave configuration.

In the first and second embodiments, the flexible brush head 6 is made of a flexible material. In the variations of the first and second embodiments set forth below, the flexible brush head 13 includes a hinge located to the center 14, perpendicular to the longitudinal axis of the brush head, which provides flexibility to the brush head. The brush head with a center-hinged joint may be made of a non-flexible material.

Figures 7 and 8 show a variation of the first embodiment of an adjustable curvature toothbrush. In this embodiment, the brush head 13 has a hinge placed to the center 14, perpendicular to the longitudinal axis of the brush head. The rigid neck 8 is remote from the cam and the flexible neck 9 which is connected to the cam bracket 5 is adjacent the cam. As the cam support is pushed into the cam by rotation of the cam, the cam support engages the flexible neck to adjust the head of the brush in a concave configuration. When the cam support is moved away from the cam, the cam support engages the flexible neck to adjust the brush head in a convex configuration.

Figures 9 and 10 show a variation of the second embodiment of an adjustable curvature toothbrush. In this embodiment, the brush head 13 has a hinge placed to the center 14, perpendicular to the longitudinal axis of the brush head. The rigid neck 10 is adjacent the cam and neck 7

11 is away from the cam. When the cam support is pushed towards the cam by rotation of the cam, the cam support engages the flexible neck to adjust the brush head in a convex configuration. When the cam support is moved away from the cam, the cam support engages the flexible neck to adjust the brush head in a concave configuration.

In the variations of the first and second embodiments, the hinge located centrally on the brush head may be any conventional hinge made of a material, such as metal or plastic. In a preferred embodiment, the hinge is made of a plastic material less thick than the material used in the remaining part of the brush head. In the first and second embodiments, the cam supports 5 and 12 may optionally contain one or more pins so that the cam can engage the pin in the cam holder to close the head of the brush in a desired position.

Figures 11 and 13 show a variation of the third embodiment of an adjustable curvature toothbrush which includes an elongate stem 15 having an elongate aperture 16, a knob 17 slidably engaged within the elongated opening of the stem; a brush head 18 having a hinge located at the center 19 perpendicular to the longitudinal axis of the brush head; bristles 20 supported by the brush head; a rigid neck 21 connected to a first end of the brush head and to one end of the shank; and a flexible neck 22 connected to a second end of the brush head and the slidable button. The curvature of the brush head can be adjusted by sliding movements of the knob.

In this third embodiment, the rigid neck 21 is adjacent to the slide knob 17 and the flexible neck 22 is spaced apart from the slide knob. The flexible neck 22 is attached to the slide knob, which is inserted and is slidably engaged within the rod opening towards the brush head 18, the knob actuates the flexible neck to adjust the brush head in a concave configuration. When the knob moves slidably away from the brush head, the knob actuates the flexible neck to adjust the brush head in a convex configuration. 8

SSSEBS

Figures 13 and 14 show a fourth embodiment of an adjustable curvature toothbrush. In this fourth embodiment, the rigid neck 23 is spaced apart from the slider 25 and the flexible neck 24 is adjacent the slider. The flexible neck 24 is connected to the sliding knob hh which is inserted and slidably engages the opening of the rod. As the knob moves slidably within the stem aperture toward the brush head, the knob actuates the flexible neck to adjust the brush head in a concave configuration. When the knob moves slidably away from the brush head, the knob actuates the flexible neck to adjust the brush head in a convex configuration.

In a variation of the third and fourth embodiments of an adjustable curvature toothbrush (not shown), the flexible brush head does not contain a hinge but is made of a flexible material.

Figures 15 and 16 show a fifth embodiment of an adjustable curvature toothbrush in the form of a compressible closed arc including a collapsible rod 26 in the form of an enclosed arch, a flexible brush head 27 integral with the closed arch , bristles 28 supported by the brush head; a rigid neck 29 connected to the first end of the brush head and to the first end of the rod; and a flexible neck 30 connected to a second end of the brush head and to a second end of the shank. The curvature of the brush head can be adjusted by compression of the closed arch rod. When the rod 26 is in a normal position (the rod is not compressed), the brush head 27 is in a concave configuration. When the shank is compressed, the shank drives the flexible neck 30 to adjust the brush head in a convex configuration. In a variation of the fifth embodiment of an adjustable curvature toothbrush (not shown), the flexible brush head includes a hinge located centrally perpendicular to the longitudinal axis of the brush head. The rod, brush heads and necks of the adjustable curvature toothbrushes of the present invention 9

Claims (2)

  1. may be made of any flexible or soft material that retains shape, known to be suitable in the art or designed, to be suitable, by a person skilled in the art, such as plastic. The rods, brush heads and necks should preferably be made of the same material and, where possible, the material should be integrally molded to form a unit, such as conventional toothbrush rods, brush heads and necks. All edges and corners should be round and smooth. The flexible brush head of the present invention may be made of a flexible material, such as plastic or may include a hinge located to the cant, perpendicular to a longitudinal axis of the brush head. The head of the hinged brush may be made of a flexible or non-flexible material, such as a metal or a plastic. In a preferred embodiment the hinge is made of a plastic material less thick than the material used in the remaining part of the brush head. The bristles may be mounted on the brush head in a plurality of tufts distributed in rows on the brush head or by any other shape known in the art or designed by a specialist. The bristles should preferably be nylon and have rounded ends. Suitable devices and materials in accordance with the manufacture of the present invention include well known devices for the manufacture of toothbrushes and thus the selection of specific devices is apparent to The specialist. An adjustable curvature toothbrush characterized by incorporating: (a) an elongated rod having an aperture; (b) a meat attached to the rod, within the aperture, by means of a. meat axis; (c) a meat carrier which engages with and follows the meat; 10 (d) a flexible brush head; (e) bristles supported by the brush head; (f) a rigid neck attached to the first end of the brush head and to one end of the shank; and (g) a flexible neck connected to a second end of the brush head and to the meat support; whereby the curvature of the brush head can be adjusted by rotation of the meat.
  2. An adjustable curvature toothbrush according to claim 1, characterized in that the first end of the brush head connected to the rigid neck is an end remote from the meat and the second end adjacent the cam, whereby the curvature of the head of the brush is concave when the cam support is urged towards the cam and the curvature of the brush head is convex when the cam support is withdrawn from the cam. Adjustable curvature toothbrush according to claim 1, characterized in that the first end of the brush head connected to the rigid neck is an end adjacent the cam and the second end of the brush attached to the flexible neck is an end remote from the cam , whereby the curvature of the brush head is concave when the cam support is moved away from the cam and the curvature of the brush head is convex when the cam support is imbedded towards the cam. The adjustable camber brush according to claim 1, characterized in that the cam support includes a tongue, whereby the cam can engage the cam on the cam holder to lock the head of the brush in a desired position . An adjustable curvature toothbrush according to claim 1, characterized in that the head 11
    of the flexible brush is made of a flexible material. Adjustable curvature toothbrush according to claim 1, characterized in that the flexible brush head includes a hinge placed in the center perpendicular to a longitudinal axis of the brush head. Adjustable curvature toothbrush characterized by incorporating: (a) an elongated rod having an elongate aperture; (b) a sliding knob engaged within the elongated opening of the rod; (c) a flexible brush head; (d) bristles supported by the brush head; (e) a rigid neck connected to a first end of the brush head and an end of the rod; and (f) a flexible neck attached to a second end of the brush head and the slidable button. whereby the curvature of the brush head can be adjusted by the sliding movement of the knob. 8 > Adjustable curvature toothbrush according to claim 7, characterized in that the first end of the brush head connected to the rigid neck is an end adjacent the slider, whereby the curvature of the brush head is concave when the button moves slidably towards the brush head and the curvature of the brush head is convex as the knob moves slidably away from the brush head. An adjustable bending toothbrush according to claim 7, characterized in that the first end of the brush head connected to the rigid neck is an end remote from the button and the second end of the brush head connected to the flexible neck is an end adjacent the button whereby the curvature of the brush head is concave as the knob moves slidably towards the brush head and the curvature 12
    of the brush head is convex when the knob moves slidably away from the brush head. Adjustable curvature toothbrush according to claim 7, characterized in that the flexible brush head is made of a flexible material. 115
    Adjustable curvature toothbrush according to claim 7, characterized in that the flexible brush head includes a hinge placed in the center, perpendicular to a longitudinal axis of the brush head. An adjustable bending toothbrush in the form of a compressible closed arc characterized in that it incorporates: (a) a compressible rod in the form of a closed arc; (b) an integral flexible head of brush with the closed arch; (c) bristles supported by the brush head; (d) a rigid neck at a first end of the brush head and a first end of the rod; and (e) a flexible neck attached to a second end of the brush head and a second end of the shank.
    whereby the curvature of the brush head can be adjusted by compression of the stem in a closed arc. Adjustable curvature toothbrush according to claim 12, characterized in that the head of the flexible brush is made of a flexible material. Adjustable curvature toothbrush according to claim 12, characterized in that the flexible brush head includes a hinge placed in the center, perpendicular to a longitudinal axis of the brush head. 13 The applicant claims the priority of the United States application filed on April 27, 1990 under No. 515,807. Lisbon, April 26, 1991
    14
PT97496A 1990-04-27 1991-04-26 Teeth brush with adjustable curvature PT97496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US51580790A true 1990-04-27 1990-04-27

Publications (1)

Publication Number Publication Date
PT97496A true PT97496A (en) 1992-02-28

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ID=24052824

Family Applications (1)

Application Number Title Priority Date Filing Date
PT97496A PT97496A (en) 1990-04-27 1991-04-26 Teeth brush with adjustable curvature

Country Status (10)

Country Link
EP (1) EP0454625A1 (en)
JP (1) JPH04269905A (en)
AU (1) AU634056B2 (en)
BR (1) BR9101718A (en)
CA (1) CA2041216A1 (en)
IE (1) IE911421A1 (en)
NZ (1) NZ237951A (en)
PE (1) PE24391A1 (en)
PT (1) PT97496A (en)
ZA (1) ZA9103180B (en)

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AU625280B2 (en) * 1988-11-04 1992-07-09 Robert Martin McCusker Deformable toothbrush
JPH05501221A (en) * 1990-06-15 1993-03-11
DE4202312A1 (en) * 1992-01-29 1993-08-05 Helmut Piller Brush
EP0726721A1 (en) * 1993-11-05 1996-08-21 James A. Simonds Toothbrush
GB9414140D0 (en) 1994-07-13 1994-08-31 Procter & Gamble Toothbrush
EP0843524B1 (en) 1994-12-01 2001-10-24 THE PROCTER & GAMBLE COMPANY Toothbrush having extended bristles
US7908699B2 (en) 2001-07-03 2011-03-22 Colgate-Palmolive Company Oral care implement
US6996870B2 (en) 1995-12-29 2006-02-14 Colgate-Palmolive Company Contouring toothbrush head
TW384214B (en) 1995-12-29 2000-03-11 Colgate Palmolive Co Contouring toothbrush head
GB9601013D0 (en) 1996-01-18 1996-03-20 Procter & Gamble Brush invention
GB9616309D0 (en) 1996-08-02 1996-09-11 Procter & Gamble A toothbrush
DE29613634U1 (en) * 1996-08-07 1996-10-10 Holtkamp Peter Dipl Ing Toothbrush having an adjustable head
US5706545A (en) * 1996-10-04 1998-01-13 Yamada; Todd H. Multi-positionable toothbrush
CA2371562C (en) * 1999-04-29 2006-08-29 Colgate-Palmolive Company Toothbrush having controlled head movement
US6292973B1 (en) * 1999-04-29 2001-09-25 Robert Moskovich Toothbrush having controlled head movement
US6301814B1 (en) 1999-08-11 2001-10-16 Smithkline Beecham Corporation Display for a flexible head toothbrush
JP2001211936A (en) * 1999-11-25 2001-08-07 Johnson & Johnson Kk Handle of tooth cleaning member
US6357073B1 (en) * 2000-04-10 2002-03-19 Choy Heung Yue Toothbrush
US8990996B2 (en) 2002-08-09 2015-03-31 Colgate-Palmolive Company Toothbrush
US7614111B2 (en) 2002-08-09 2009-11-10 Colgate-Palmolive Company Oral care implement
US8806695B2 (en) 2002-08-09 2014-08-19 Colgate-Palmolive Company Oral care implement having flexibly supported cleaning elements extending in opposite directions
US8876221B2 (en) 2002-08-09 2014-11-04 Colgate-Palmolive Company Oral care implement
US7360270B2 (en) 2002-08-09 2008-04-22 Colgate-Palmolive Company Toothbrush
US20060026784A1 (en) 2002-08-09 2006-02-09 Colgate-Palmolive Company Oral care implement
US7841041B2 (en) 2002-08-09 2010-11-30 Colgate-Palmolive Company Oral care implement
US7721376B2 (en) 2002-09-20 2010-05-25 Colgate-Palmolive Company Oral care implement
DE102005008199A1 (en) * 2005-02-22 2006-08-31 Glaxosmithkline Consumer Healthcare Gmbh & Co. Kg Toothbrush includes moulding element with flexible cheeks forming wedge set inside brush to adapt to tooth surface when cleaning pressure is applied
DE102006033412A1 (en) * 2006-07-19 2008-01-24 Wilden Handels Ag Toothbrush comprises a support part connected as one piece to a head part via a hinge section
TW200819085A (en) 2006-08-11 2008-05-01 Glaxosmithkline Consumer Healt Toothbrush
EP2959797A1 (en) * 2014-06-27 2015-12-30 Trisa Holding AG Toothbrush with moved elements

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US1927365A (en) * 1933-03-15 1933-09-19 Frolio Natal Toothbrush
US2111880A (en) * 1937-03-02 1938-03-22 William E Waters Tooth brush
US2429437A (en) * 1945-05-25 1947-10-21 Maurice J Walker Toothbrush
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DE3814143C1 (en) * 1988-04-27 1989-07-20 Blendax Gmbh, 6500 Mainz, De

Also Published As

Publication number Publication date
ZA9103180B (en) 1992-01-29
JPH04269905A (en) 1992-09-25
PE24391A1 (en) 1991-08-17
IE911421A1 (en) 1991-11-06
CA2041216A1 (en) 1991-10-28
BR9101718A (en) 1991-12-10
AU634056B2 (en) 1993-02-11
EP0454625A1 (en) 1991-10-30
AU7596191A (en) 1991-11-07
NZ237951A (en) 1994-04-27

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