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Publication numberUS3152349 A
Publication typeGrant
Publication dateOct 13, 1964
Filing dateJul 22, 1963
Priority dateJul 22, 1963
Publication numberUS 3152349 A, US 3152349A, US-A-3152349, US3152349 A, US3152349A
InventorsHouse Brennesholtz Aaron
Original AssigneeDu Pont
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Toothbrush
US 3152349 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

13, 1964 A. H. BRENNESHOLTZ 3,152,349

TOOTHBRUSH Filed July 22, 1963 FIG. FIG.2 FIG.3

INVENTOR AARON HOUSE BRENN ESHOLTZ BY AGENT United States Patent Oflice Patented Oct. 13, 1964 3,152,349 TOOTHBRUSH Aaron House Brennesholtz, Ridgewood, N.J., assignor to E. 1. du Pont de Nemours and Company, Wilmington, DeL, akorporation of Delaware Filed July 22, 1963, Ser. No. 296,595 1 Claim. (Cl. 15167) This invention relates to improvements in toothbrushes and the like, and more particularly to toothbrushes having flexible bristle carrying sections.

The principal object of this invention is the provision of a toothbrush better adapted to conform to the contour of the teeth, thereby entering the spaces between the teeth for proper cleaning action.

Further objects and advantages of the present invention will become more apparent during the course of the following description and in the accompanying drawing, forming a part of this specification and of which:

FIG. 1 is a top plan view;

FIG. 2 is a side view, partly in section, on the line 2-2 of FIG. 1;

FIG. 3 is taken on line 3-3 of FIG. 1; and

FIG. 4 and FIG. 5 show the action of the brush in use.

The toothbrush includes a handle 16 having at one end thereof a rigid bristle supporting portion 11. The rigid bristle supporting portion 11 has flexibly connected thereto by hinges 12, 13, two bristle supporting portions 14, 15. The bristle supporting portions 14, 15 are located within the rigid bristle supporting portion 11. The bristle supporting portion 11 contains tufts of bristles 15. The bristle supporting portions 14, 15 contain tufts of bristles 17. The tufts of bristles 17 are longer than the tufts of bristles 16 to enable them to reach into the crevices between teeth. The tufts of bristles 1d are of a more flexible material than the tufts of bristles 17 so that damage to gum tissue will be avoided.

The handle 10, rigid bristle supporting section 11, hinges 12, 13 and bristle supporting sections 14 and 15 (not including the bristles) are preferably made integral and are of an elastic resilient material such as polyoxymethylene so that the handle 10 and bristle supporting portions 11, 14, and 15 are essentially rigid while the hinges 12, 13 are quite flexible.

The bristle tufts 17 act independently of the bristle tufts 16. The action produced by the bristle tufts 17 is shown in FIGS. 4 and 5. The resiliently mounted bristle supporting sections coact to permit the tufts of bristles which they support to accommodate themselves to the teeth which have a generally convex or concave overall configuration. The two hinged bristle supporting sections each coact to reinforce the effect of the other through a spring-like action. For example, as the bristle tufts supported by the member 14 are directed inwardly, thus depressing the member 14, the bristle tufts of the member 15 are free to move outwardly under engagement With the teeth and thus penetrate the crevices between the teeth being brushed.

In manufacture, the body of the toothbrush may be molded directly in the fonn shown or it may be molded as a solid block and the slot between the parts may be sawed out. In any event, the slot between the bristle sections serves to permit ease of cleaning of the toothbrush thus promoting a higher level of sanitation.

What I claim as my invention is:

A toothbrush comprising an integral elongated handle formed of acetal resin, said handle being provided at one end thereof with an elongated main bristle supporting section, said main bristle supporting section being provided with a plurality of longitudinal rows of elongated bristle tufts, said main bristle supporting section having a forward and a rearward portion, said main bristle supporting section having disposed between said plurality of longitudinal rows of bristle tufts a first and a second longitudinally extending secondary bristle supporting section, said first secondary bristle supporting section being integrally connected to said forward portion of said main bristle supporting section, said second secondary bristle supporting section being integrally connected to said rearward portion of said main bristle supporting section, said first and second secondary bristle supporting sections being provided with a plurality of elongated bristle tufts arranged in a single longitudinal row, said last named bristle tufts being of greater length than said first named bristle tufts, said first and second secondary bristle supporting sections having integral resilient portions positioned at the point where said secondary bristle supporting sections are connected to said main bristle supporting section to permit coaction between said secondary bristle supporting sections.

References Cited in the file of this patent UNITED STATES PATENTS 1,323,042 Gardner Nov. 25, 1919 1,664,797 Stone Apr. 3, 1928 2,266,195 Hallock Dec. 16, 1941 2,676,350 Bressler Apr. 27, 1954 FOREIGN PATENTS 707,727 France Apr. 20, 1931

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1323042 *Nov 23, 1917Nov 25, 1919 Tooth-bbirsh
US1664797 *Oct 21, 1924Apr 3, 1928Stone Philip WBrush
US2266195 *Dec 13, 1938Dec 16, 1941Hallock Robert LayToothbrush
US2676350 *Mar 16, 1953Apr 27, 1954Stanley Home Products IncToothbrush with a flexible head
FR707727A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4333199 *Apr 30, 1981Jun 8, 1982Rosario M DelToothbrush
US4488328 *Jan 24, 1983Dec 18, 1984Hyman Richard MFloating head toothbrush
US4691405 *Jul 29, 1985Sep 8, 1987Reed Joseph CToothbrush having adjustable bristle-mounted tabs
US4766633 *May 18, 1987Aug 30, 1988Clark Quentin STooth and sulcus brush
US5121520 *Jul 24, 1990Jun 16, 1992Inter-X Scientific, Inc.Twin-headed toothbrush
US5269038 *Aug 16, 1991Dec 14, 1993Bradley Terry GRocker toothbrush
US5398366 *Sep 10, 1993Mar 21, 1995Bradley; TerryRocker toothbrush
US5419001 *Mar 29, 1994May 30, 1995Wan; John C.Toothbrush
US5499421 *Jun 15, 1993Mar 19, 1996Brice; Michael F.Twin-headed toothbrush
US5524319 *May 31, 1995Jun 11, 1996Avidor; JosephToothbrush having spring-mounted bristle holders
US5758383 *Dec 10, 1996Jun 2, 1998Colgate-Palmolive CompanyContouring toothbrush head
US5813079 *Sep 12, 1996Sep 29, 1998Lingner & Fischer GmbhToothbrush having a flexibility linked zone in its head
US5839148 *Apr 17, 1997Nov 24, 1998The Procter & Gamble CompanyToothbrush with both stationary and moving tufts
US5906023 *Sep 25, 1997May 25, 1999Edwards; David B.Pivotable hairbrush
US6073299 *Jul 12, 1999Jun 13, 2000Colgate-Palmolive CompanyContouring toothbrush head
US6112361 *Nov 10, 1997Sep 5, 2000Michael F. BriceTwin-headed toothbrush
US6178582Aug 22, 1996Jan 30, 2001Smithkline Beecham Consumer Healthcare GmbhToothbrush comprising a resilient flex region
US6185779 *Aug 18, 1997Feb 13, 2001Smithkline Beecham Consumer Healthcare GmbhToothbrush comprising a flexibly linked region in the head
US6219874 *Jul 12, 1995Apr 24, 2001The Procter & Gamble Co.Resiliently flexible bristle bearing head toothbrush
US6314605Aug 1, 1997Nov 13, 2001The Procter & Gamble CompanyToothbrush
US6314606Oct 22, 1999Nov 13, 2001Colgate-Palmolive CompanyContouring toothbrush head
US6327735Feb 17, 1998Dec 11, 2001Smithkline Beecham Consumer Healthcare, GmbhPower tip toothbrush with ball joint
US6408476Jan 17, 1997Jun 25, 2002The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
US6442786Jan 25, 2001Sep 3, 2002Smithkline Beecham Consumer Healthcare GmbhToothbrush comprising a resilient flex region
US6442787Jul 3, 2001Sep 3, 2002Colgate-Palmolive CompanyContouring toothbrush head
US6453497Mar 16, 2000Sep 24, 2002The Gillette CompanyOral care device
US6505373Apr 18, 2001Jan 14, 2003The Procter & Gamble CompanyToothbrush
US6514445Dec 12, 1997Feb 4, 2003The Procter & Gamble CompanyBrush making
US6675428Dec 15, 2000Jan 13, 2004Smithkline Beecham Consumer Healthcare GmbhToothbrush comprising a resilient flex region
US6996870Apr 1, 2002Feb 14, 2006Colgate-Palmolive CompanyContouring toothbrush head
US7363823Jul 11, 2005Apr 29, 2008Nmoc, LlcTwin-headed toothbrush
US7707676Jun 30, 2006May 4, 2010The Procter & Gamble CompanyToothbrush
US7721376Dec 23, 2004May 25, 2010Colgate-Palmolive CompanyOral care implement
US7908699Dec 23, 2004Mar 22, 2011Colgate-Palmolive CompanyOral care implement
US7962992Dec 23, 2005Jun 21, 2011The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
US8060970Mar 11, 2010Nov 22, 2011The Procter & Gamble CompanyToothbrush
US8079110May 26, 2010Dec 20, 2011Colgate-Palmolive CompanyOral care implement
US8327492May 16, 2011Dec 11, 2012The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
US8332985Nov 18, 2011Dec 18, 2012The Procter & Gamble CompanyToothbrush
US8393042Oct 9, 2009Mar 12, 2013Colgate-Palmolive CompanyOral care implement
US8561247Jun 17, 2011Oct 22, 2013Colgate-Palmolive CompanyOral care implement
US8578544Jan 31, 2008Nov 12, 2013The Gillette CompanyOral hygiene implements having flexible elements, and methods of making the same
US8584299Jul 25, 2007Nov 19, 2013The Procter & Gamble CompanyElectric toothbrushes
US8800093Dec 2, 2011Aug 12, 2014Colgate-Palmolive CompanyOral care implement
US8806695Mar 20, 2012Aug 19, 2014Colgate-Palmolive CompanyOral care implement having flexibly supported cleaning elements extending in opposite directions
US8839481May 7, 2013Sep 23, 2014Colgate-Palmolive CompanyOral care implement
US8857003Aug 18, 2008Oct 14, 2014Colgate-Palmolive CompanyContouring toothbrush head
US8876221Aug 23, 2011Nov 4, 2014Colgate-Palmolive CompanyOral care implement
US8955186Oct 15, 2013Feb 17, 2015The Procter & Gamble CompanyElectric toothbrushes
US8990996Oct 8, 2012Mar 31, 2015Colgate-Palmolive CompanyToothbrush
US9167888Jul 10, 2014Oct 27, 2015Colgate-Palmolive CompanyOral care implement having flexibly supported cleaning elements extending in opposite directions
US9504312Oct 8, 2013Nov 29, 2016The Gillette Company LlcOral hygiene implements having flexible elements, and methods of making the same
US9545148Sep 16, 2014Jan 17, 2017Colgate-Palmolive CompanyOral care implement
US9603441Feb 20, 2015Mar 28, 2017Colgate-Palmolive CompanyToothbrush
US20020152570 *Apr 1, 2002Oct 24, 2002Douglas HohlbeinContouring toothbrush head
US20050246847 *Jul 11, 2005Nov 10, 2005Brice Michael FTwin-headed toothbrush
US20060130257 *Dec 23, 2005Jun 22, 2006Cann David VToothbrush with elastomer filled flexible head
USRE38521Jul 28, 1999May 25, 2004Lingner & Fischer GmbhToothbrush with resiliently flexible head
WO1981002380A1 *Sep 2, 1980Sep 3, 1981M RosarioImproved toothbrush
WO1992001407A1 *Jul 23, 1991Feb 6, 1992Brice Michael FTwin-headed toothbrush
WO1992017094A1 *Mar 30, 1992Oct 15, 1992Bradley Terry GRocker toothbrush
Classifications
U.S. Classification15/167.1, 15/201
International ClassificationA46B7/00, A46B7/06
Cooperative ClassificationA46B5/0029, A46B7/06
European ClassificationA46B5/00B1A, A46B7/06