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Publication numberUS2706825 A
Publication typeGrant
Publication dateApr 26, 1955
Filing dateApr 2, 1954
Priority dateApr 2, 1954
Publication numberUS 2706825 A, US 2706825A, US-A-2706825, US2706825 A, US2706825A
InventorsBlakeman Amoron R
Original AssigneeBlakeman Amoron R
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Toothbrush
US 2706825 A
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Description  (OCR text may contain errors)

April-26, 1955 A. R. BLAKEMAN 2,706,825

TOOTHBRUSH Filed April 2, 1954 INVENTOR.

Auaeow ,e. eLAKsI M/v ,4 TTOENE' VJ United States Patent TOOTHBRUSH Amoron R. Blakeman, Berwick, La.

Application April 2, 1954, Serial No. 420,530

2 Claims. (Cl. 15--176) The present invention relates to new and useful improvements in toothbrushes and has for its primary object to provide, in a manner hereinafter set forth, a device of this character which automatically shapes itself in use to conform to the contour of the teeth.

Another object of the present invention is to provide a toothbrush which has a separable and replaceable bristle portion of inexpensive construction which may be inserted in the handle portion with ease and which may be readily removed for sterilizing, replacement, or reversal in the holder as may be desired.

A still further object of the present invention is to provide a demountable bristle head for a tooth brush which flexes in the handle portion so as to present at certain portions of the teeth a greater number and denser group of bristles which assist materially in removing tartar and stains from the teeth, while at other portions of the teeth the bristles assume a less dense grouping, the better to penetrate the space between the teeth and the crevices therein.

These objects and other advantages of the present invention will be readily apparent upon consideration of the following description when taken in connection with the appended claims and the annexed drawings, in which like numerals indicate like parts throughout the several views, and in which:

Figure l is a view in perspective of the present invention;

Figure 2 is a side view in section of the head portion of the invention;

Figure 3 is a side view in elevation of the head portion shown in Figure 2, and

Figure 4 is an exploded view in perspective of the invention showing the bristle portion removed from the head portion of the handle.

Referring in more detail to the drawing, it will be seen in Figures 1 to 4 that the invention comprises an an elongated relatively inflexible handle having at one end a head portion 11 of particular formation in which the one face 12 has a concavely curved surface 13 longitudinally arranged and terminating at the outer end in a substantially rectangular block 14, and at the inner end the surface 13 merges into a rounded boss which joins smoothly with the handle 10, said block 14 and boss 15 being disposed transverse to said head portion. The handle 10 has a narrow neck 16 in the conventional manner for the hanging of the toothbrush in a suitable fixture, here not shown.

The block 14 and the rounded boss 15 both have inwardly facing recesses 17 and 18, respectively, which are circular in cross section and have slot openings 19 of less width than their diameters.

In Figure 4 is seen most clearly a substantially rectangular demounting bristle portion having a base 20 which for the purpose of this invention is made of a flexible material such as rubber, plastic, or other substance relatively yieldable within prescribed limits, and having at each end a cylindrical bead 21 on a slightly narrowed neck 22.

It will be seen in Figures 1 and 2 that these beads 21 conform in size and shape to the recesses 17 and 18 and the invention has an important feature that the base 20 is dimensioned to be an appreciable length greater than the chord between the recesses 17, 18 in the block 14 and boss 15, respectively, causing the base 20 to be bowed outwardly in rest condition. Base 20 is also of greater longitudinal size than the arc of the surface 13, so that upon conditions of pressure on the one face having the bristles 23, as would be the case when the toothbrush is used, the whole of the base 20 may not fit against the surface 13, and a portion, as at 24, may bend inwardly and a second portion, as at 25 is perforce bent outwardly. It is also seen that the bristles at 24 are in a denser group while at 25, are less dense than normal by an appreciable degree, depending upon the initial set or grouping of the.

bristles and upon the relative dimensions of the base 20 and surface 13.

It is considered relevant to the purpose of the invention that the width of the base 20 be such as to secure the bristles without tending to twist out of the head portion 11, and that the material used in the manufacture of the base 20 be such that its flexibility permit the desired action of bending under pressure.

It is seen that the portions 24 and 25 will move along the whole of the base 20 and will change positions as the pressure of the brush against the teeth and the movement of the brush permits the brush to contact the teeth at various degrees of conformation. This action is of inestimable value in massaging and in the cleansing process found so necessary for perfect dental hygiene.

The invention permits, as is readily understandable, the construction of the handle 10 from plastic, wood, metal, or any substance; plastic being preferable, the common forms of which are not, of course, stable under conditions of high or prolonged heat during sterilizing. The base 20 and the bristles 23 may be made of materials which will withstand high temperatures, permitting a cleaner and more antiseptic condition than is normally found in the use of conventional toothbrushes.

While a single embodiment of the invention has been illustrated and described, it is to be understood that many changes and modifications are contemplated and may be made in the invention without departing from the spirit and scope thereof as set forth in the appended claims.

What is claimed is:

1. A toothbrush comprising an elongated handle having a head portion at one end thereof, said head portion having a concavely curved surface on one face thereof and being formed with a transversely extending recess at each end of said curved surface; a demountable bristle portion having a flexible base and bristles projecting from one face thereof, said base being normally flat and having at each end a bead received within the adjacent one of said recesses, said base being adapted to flex under pressure and bend for a portion of its length inwardly into contact with said surface, the remaining portion of its length being then bent outwardly a greater distance than when in rest condition.

2. A toothbrush comprising an elongated inflexible handle having a head portion at one end thereof, said head portion being formed on one face with a concave surface longitudinally arranged and having a rounded boss in said one face between said surface and said handle and at its end remote from said handle being formed with a rectangular block, said boss and said block each being formed with transversely extending recesses facing inwardly relatively to each other and disposed one at each end of said surface, said recesses being substantially circular in cross section and each having a slot opening of less width than its diameter; and a demountable bristle portion having a normally flat base and bristles projecting from one face thereof, said base being substantially rectangular in shape and having each of its ends formed with a transversely disposed narrow neck terminating in a cylindrical bead of greater diameter than the width of said neck, said base being relatively flexible and dimensioned to be longer than the chord of said surface between said recesses so that when said beads are received one each in said recess said base will curve convexly outward from said surface, said base being adapted to flex under pressure and bend for a portion of its length inwardly into contact with said surface, the remaing portion of its length being then bent outwardly a greater distance than when in rest condition.

References Cited in the file of this patent UNITED STATES PATENTS

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2111880 *Mar 2, 1937Mar 22, 1938Waters William ETooth brush
US2429437 *May 25, 1945Oct 21, 1947Walker Maurice JToothbrush
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2772434 *Feb 7, 1955Dec 4, 1956Nathan L SolomonShampoo brush with detachable handle
US2920334 *Jul 13, 1956Jan 12, 1960Keller HarryPlastic brush construction
US4227276 *Feb 7, 1979Oct 14, 1980Ginsburg Stephen JToothbrush with thermally deformable handle
US5105499 *Mar 1, 1991Apr 21, 1992The Procter & Gamble CompanyToothbrush having handle joined to brush head by non-pinching flexible twin beam structure
US5146645 *Mar 1, 1991Sep 15, 1992The Procter & Gamble CompanyToothbrush employing resiliently buckling arch to indicate excessive brushing pressure
US5224234 *Apr 18, 1991Jul 6, 1993Arsenault Jeffrey LToothbrush with replaceable bristles
US5355546 *Dec 11, 1992Oct 18, 1994Scheier Paul AToothbrush with resilient flexible bristle support
US5483722 *Jul 19, 1994Jan 16, 1996Scheier; Paul A.Toothbrush with resilient flexible bristle support
US5802656 *Nov 27, 1996Sep 8, 1998Chesebrough-Pond's Usa Co., Division Of Conopco, Inc.Toothbrush with flexibly mounted bristles
US5839149 *Aug 26, 1996Nov 24, 1998Scheier; Paul A.Toothbrush with resilient flexible bristle support
US5991959 *Feb 17, 1998Nov 30, 1999Chesebrough-Pond's Usa Co.,Toothbrush with flexibly mounted bristles
US6006395 *Jan 12, 1996Dec 28, 1999500 Group, Inc.Cushion brush
US6141817 *Mar 26, 1997Nov 7, 2000Cheesebrough-Pond's Usa Co., Division Of Conopco, Inc.Toothbrush
US6292973 *Apr 29, 1999Sep 25, 2001Robert MoskovichToothbrush having controlled head movement
US7020928Aug 26, 2003Apr 4, 2006Colgate-Palmolive CompanyToothbrush
US7137163 *Sep 27, 2002Nov 21, 2006Colgate-Palmolive CompanyPower toothbrush and power source
US7174596Dec 20, 2002Feb 13, 2007Trisa Holding AgToothbrush and process for producing such a toothbrush
US7251849Aug 22, 2005Aug 7, 2007Colgate-Palmolive CompanyToothbrush
US7354112Feb 27, 2006Apr 8, 2008Trisa Holding AgToothbrush and process for producing such a toothbrush
US7360270Feb 8, 2005Apr 22, 2008Colgate-Palmolive CompanyToothbrush
US7430780Feb 8, 2005Oct 7, 2008Colgate-Palmolive CompanyToothbrush
US7445295Nov 30, 2007Nov 4, 2008Trisa Holding AgToothbrush and process for producing such a toothbrush
US7458647Nov 30, 2007Dec 2, 2008Trisa Holding AgToothbrush and process for producing such a toothbrush
US7520571Feb 11, 2008Apr 21, 2009Trisa Holding AgToothbrush and process for producing such a toothbrush
US7526828Feb 21, 2006May 5, 2009Glaxosmithkline Consumer Healthcare Gmbh & Co KgToothbrush
US7549187Dec 27, 2006Jun 23, 2009Trisa Holding AgToothbrush and process for producing the same
US7614111Oct 24, 2005Nov 10, 2009Colgate-Palmolive CompanyOral care implement
US7703163Jan 30, 2004Apr 27, 2010Colgate-Palmolive CompanyToothbrush with enhanced cleaning effects
US7757326Oct 30, 2003Jul 20, 2010Cologate-Palmolive CompanyToothbrush with enhanced cleaning effects
US7774891Mar 5, 2009Aug 17, 2010Trisa Holding AgToothbrush and process for producing the same
US7823243Apr 25, 2005Nov 2, 2010Colgate-Palmolive CompanyToothbrush
US7841041May 8, 2006Nov 30, 2010Colgate-Palmolive CompanyOral care implement
US7975346Mar 31, 2010Jul 12, 2011Colgate-Palmolive CompanyOral care implement
US7988238Mar 11, 2009Aug 2, 2011Trisa Holding AgToothbrush and process for producing such a toothbrush
US7992247Jul 9, 2010Aug 9, 2011Trisa Holding AgToothbrush and process for producing the same
US8020244 *Dec 7, 2007Sep 20, 2011Nobuhiro MashikoToothbrush
US8099819 *Jul 22, 2004Jan 24, 2012Glaxosmithkline Consumer Healthcare Gmbh & Co KgToothbrush
US8151397Jun 26, 2008Apr 10, 2012Colgate-Palmolive CompanyOral care implement having flexibly supported cleaning elements extending in opposite directions
US8156995Apr 20, 2009Apr 17, 2012Rite-Hite Holding CorporationDoor element
US8166601 *Jan 14, 2008May 1, 2012Braun GmbhElectric toothbrush head
US8220102Mar 7, 2005Jul 17, 2012Glaxosmithkline Consumer Healthcare Gmbh & Co. KgToothbrush
US8281448Oct 3, 2007Oct 9, 2012Colgate-Palmolive CompanyOral care implement having one or more moving sections
US8418306Jun 29, 2011Apr 16, 2013Trisa Holding AgToothbrush and process for producing the same
US8448285 *Nov 27, 2006May 28, 2013Loops, LlcToothbrush and methods of making and using same
US8448287Jul 14, 2011May 28, 2013Mcneil-Ppc, Inc.Replaceable toothbrush head
US8540007Apr 13, 2012Sep 24, 2013Rite-Hite Holding CorporationDoor element
US8549693 *Apr 20, 2011Oct 8, 2013Gruber, LlcTooth cleaning device
US8578546Oct 2, 2012Nov 12, 2013Colgate-Palmolive CompanyOral care implement having one or more moving pieces
US8613123Feb 12, 2013Dec 24, 2013Trisa Holding AgToothbrush and process for producing the same
US8695148Dec 15, 2006Apr 15, 2014Colgate-Palmolive CompanyToothbrush
US20120058445 *Nov 8, 2011Mar 8, 20123M Innovative Properties CompanyDental instrument and method of use
US20120266401 *Apr 20, 2011Oct 25, 2012Gruber, LlcTooth cleaning device
USRE42985Dec 20, 2002Dec 6, 2011Trisa Holding AgToothbrush and process for producing such a toothbrush
USRE44346Dec 20, 2002Jul 9, 2013Trisa Holding AgToothbrush and process for producing such a toothbrush
CN100415140CAug 8, 2003Sep 3, 2008高露洁-棕榄公司Flexible toothbrush
CN100469276CAug 8, 2003Mar 18, 2009高露洁-棕榄公司Flexible arched-top toothbrush
CN100475088CSep 26, 2003Apr 8, 2009特里沙控股公司Toothbrush and method for producing the same
EP1765565A1 *Jul 12, 2005Mar 28, 2007Trisa Holding AGMethod and device for producing a toothbrush according to a double of multi component injection moulding method
WO2004014181A1Aug 8, 2003Feb 19, 2004Colgate Palmolive CoFlexible dome toothbrush
WO2004014183A1Aug 8, 2003Feb 19, 2004Colgate Palmolive CoFlexible toothbrush
WO2004019801A2Aug 26, 2003Mar 11, 2004Colgate Palmolive CoToothbrush with flexible membrane
WO2004056235A1 *Sep 26, 2003Jul 8, 2004Trisa Holding AgToothbrush and method for producing the same
WO2005084486A1Mar 7, 2005Sep 15, 2005Thomas ClosToothbrush
WO2006089784A1 *Feb 21, 2006Aug 31, 2006Glaxosmithkline Consumer HealtToothbrush
WO2008073950A1 *Dec 12, 2007Jun 19, 2008Colgate Palmolive CoToothbrush
Classifications
U.S. Classification15/176.4, 15/167.1
International ClassificationA46B7/00, A46B7/06
Cooperative ClassificationA46B5/0029, A46B7/06
European ClassificationA46B5/00B1A, A46B7/06