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Publication numberUS1639880 A
Publication typeGrant
Publication dateAug 23, 1927
Filing dateFeb 19, 1926
Priority dateFeb 20, 1925
Publication numberUS 1639880 A, US 1639880A, US-A-1639880, US1639880 A, US1639880A
InventorsButler Joseph Bernard
Original AssigneeButler Joseph Bernard
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Toothbrush
US 1639880 A
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Description  (OCR text may contain errors)

Patented Aug. 23, 1927.

UNITED STATES JOSEPH BERNARD Burma, or wan-Ema, LONDON, mamma- TOOTHIBBUSH.

Application filed February 19, 1526, Serial No.

This invention relates to tooth brushes and has for its object to facilitate more thorough cleaning of the teeth at all places within the mouth. I

6 The improved tooth brush according to the invention comprises a convex back, one or more front rows of bristlesthis word is used throughout the specification to denote the bundles of hairs-conically pointed and backwardly inclined and a plurality of back rows of chisel-pointed bristles. The front rows of bristles come into play particularly when cleaning the backs of the teeth with ,a longitudinal movement of the brush and when cleaning round the back teeth, such operations being facilitated by the inclination of the bristles in these rows. The

' chisel-pointed back rows of'bristles ensure proper cleaning of the recesses between teeth 0 when the brush isworked laterally.

The invention is illustrated by way of example in the accompanying drawing":

Figure 1 being a side elevation of the brush;

Figure 2 an inverted plan;

Figure 3 a plan; and

Figure 4 an end elevation.

Referring to the drawings, 1 is the handle of the brush and is shaped as shown in 80 order to provide a convenient and comfortable grip for the fingers and thumb. The back 2 has a convex surface 3 into which the bristles are inserted, the front end 4 being bent downwardly. The front two rows '35 of bristles'5 are conically pointed and inclined backwardly towards the back rows of bristles 6 which are chisel-pointed as illustrated.

The convexity of the brush back gives the 40 bristles in the front rowsand to a certain extentthe back rows, alsoa splayed formation as will be seen clearly in Figure 4.

In some cases the front rows of bristles, instead of containing four bristles in each, 46 may be provided with three. or five as desired. Likewise, the number of bristles in the back rows may be varied. A feature of the improved brush is that ample space 'is provided between the roots of the ,bristles'so that they can be properly cleansed after use. All the bristles are of the same length so as to facilitate manufacture.

89,501, and in Great Britain February 80, 1885.

.tufts being disposed perpendicularly to said portion, the tip of each tuft being conically pointed, and a plurality of rows of tufts mounted on said back inwardly of said in clined portion, each of said last named rows terminating in a chisel pointed working surface.

2. A toothbrush comprising a handle provided at one end. with an elongated tuft carrying back terminating in an inclined widened portion, one or more rows of bristle tufts mounted on the inclined portion, the rows bein disposed transversely thereof and the tufts ing disposed perpendicularly to said inclined widened portion, the tipof each tuft being conically pointed, and a plurality of rows of bristle tufts mounted on said back inwardly of inclined portion, each of said last named rows terminating in a chisel pointed working surface, there being more tufts to a row in the first named rows on the inclined portion than in the last named rows.

3; 'A toothbrush com rising a handle provided at one end wit an elongated tuft carryin back .terminatin in an inclined widened ortion, the back aving an arcuate face, one or more rows of bristle tufts mounted n the arcuate face of the inclined portion of the back, the rows being disposed transversely thereof and the tufts eing disposed perpendicularly to said inclined widened portion the tip of each tuft being conically pointed rows of bristle tufts, mounted on the armate face of said back inwardly of the inclined portion, each of said last named rows terminatin in a chisel pointed workin surface, there being more tufts to a row in the ,and a plurality of first named rows on the inclined portion than in the last named rows.

' J QSEPH BERNARD BUTLER.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2431861 *Jun 1, 1945Dec 2, 1947Babe AlbertToothbrush
US2738529 *May 23, 1950Mar 20, 1956Bernet Armin HCombined sponge and brush toilet bowl cleaner
US3050072 *Aug 28, 1959Aug 21, 1962Diener JackTooth cleaning device
US4776055 *Feb 20, 1987Oct 11, 1988Nelson Stanley EDental instrument
US4800608 *Oct 5, 1987Jan 31, 1989Key John RToothbrush
US5371915 *Apr 6, 1993Dec 13, 1994Key; John R.Angular headed toothbrush
US5628082 *Mar 22, 1995May 13, 1997Colgate-Palmolive CompanyToothbrush with improved efficacy
US5778477 *Apr 14, 1997Jul 14, 1998Conway; RaymondToothbrush
US6006394 *Jun 19, 1997Dec 28, 1999Gillette Canada Inc.Toothbrush
US6050273 *Sep 12, 1996Apr 18, 2000Lvmh RechercheMascara brush
US6073299 *Jul 12, 1999Jun 13, 2000Colgate-Palmolive CompanyContouring toothbrush head
US6314606Oct 22, 1999Nov 13, 2001Colgate-Palmolive CompanyContouring toothbrush head
US6442787Jul 3, 2001Sep 3, 2002Colgate-Palmolive CompanyContouring toothbrush head
US6996870Apr 1, 2002Feb 14, 2006Colgate-Palmolive CompanyContouring toothbrush head
US7721376Dec 23, 2004May 25, 2010Colgate-Palmolive CompanyOral care implement
US7908699Dec 23, 2004Mar 22, 2011Colgate-Palmolive CompanyOral care implement
US8079110May 26, 2010Dec 20, 2011Colgate-Palmolive CompanyOral care implement
US8393042Oct 9, 2009Mar 12, 2013Colgate-Palmolive CompanyOral care implement
US8561247Jun 17, 2011Oct 22, 2013Colgate-Palmolive CompanyOral care implement
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
DE3833895A1 *Oct 5, 1988Apr 20, 1989John Richard KeyVerbesserte zahnbuerste
WO1994009678A1 *Oct 29, 1993May 11, 1994William A BredallToothbrush
WO1994022346A1 *Apr 5, 1994Oct 13, 1994John R KeyAngular headed toothbrush
WO1998058562A1Jun 24, 1998Dec 30, 1998Colgate Palmolive CoToothbrush having head with peel-resistant joint
WO1998058563A1Jun 24, 1998Dec 30, 1998Colgate Palmolive CoTrimming and end rounding of flexible head toothbrushes
Classifications
U.S. Classification15/167.1
International ClassificationA46B9/04
Cooperative ClassificationA46B9/04, A46B9/045
European ClassificationA46B9/04, A46B9/04A