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Publication numberUS2650383 A
Publication typeGrant
Publication dateSep 1, 1953
Filing dateMar 7, 1952
Priority dateMar 7, 1952
Publication numberUS 2650383 A, US 2650383A, US-A-2650383, US2650383 A, US2650383A
InventorsBressler Louis R
Original AssigneeBressler Louis R
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Toothbrush with a flexible head
US 2650383 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Sept. 1, 1953 L. R. BRESSLER TOOTHBRUSH WITH A FLEXIBLE HEAD Filed March 7, 1952 q wh AN. .w

INVEN TOR.

Patented Sept. 1, i953 UNITED STATES PATENT OFFICE TOOTHBRUSH WITH A FLEXIBLE HEAD Louis B. Bressler, Southampton, Mass.

Application March 7, 1952, Serial No. 275,345

3 Claims.

This invention relates to improvements in toothbrushes and is directed more particularly to toothbrushes having relatively flexible bristle carrying sections.

The principal objects of this invention are the provision of a toothbrush wherein bristle carrying head sections are flexibly associated so that in brushing the teeth bristles conform to the contour of the teeth thereby entering the spaces between the teeth for proper cleaning action.

Heretofore toothbrushes have been made Where the bristle supporting head has included a plurality of bristle carrying sections connected by metal springs for relative flexing of the sections. Such brushes have not been satisfactory and are objectionable for numerous reasons. There is a fault bond between the metal spring and plastic of the head sections, and the metal is subject to corrosion, as well as subject to fatigue. Furthermore, the metal sets so as to rupture with normal use and the tufts of bristles are not properly secured in the sections because the securing means, usually comprising staples, may not extend into the plastic material to the required depth. That is, the staples cannot extend through the metal spring which results in inadequate bristle securement.

According to this invention, a toothbrush construction'is provided having a head end which is formed by bristle sections flexibly connected by a non-metallic spring member formed from plastic such as nylon.

Such a construction overcomes the difficulties experienced with prior art brushes and has many advantages thereover in that the plastic spring member is adequately bonded to the bristle sections molded therearound, is resistant to corrosion, and has a much longer life than a metallic spring in that it is capable of many times the flexing movements of a metal spring and the staples may impinge or extend through the nylon spring thereby to more securely unite the bristle tufts with the head section.

All of the above objects I accomplish by means of such structure and relative arrangements of parts thereof, as will fully appear by a perusal of the description below and by various specific features which will be hereinafter set forth.

To the above cited and other ends and with the foregoing and various other novel features and advantages and other objects of my invention as will become more readily apparent as the description proceeds, my invention consists in certain novel features of construction and in the combination and arrangement of parts as will be hereinafter more particularly pointed out in the claims hereunto annexed and more fully described and referred to in connection with the accompanying drawings wherein:

Figs. 1 and 2 are plan and side elevational views of a toothbrush embodying the novel features of the invention;

Figs. 3 and 4 are plan and edge views of the resilient member of the toothbrush shown in Figs. 1 and 2; and

Fig. 5 is a partial sectional elevational view through the toothbrush shown in Figs. 1 and 2.

Referring now to the drawings more in detail, the invention will be fully described.

A toothbrush is indicated generally by 2 and has a handle 4 and a bristle supporting head 6.

The head 6 of the toothbrush includes an outer end section 8, intermediate sections l0 and a handle section I2.

The toothbrush Will preferably be formed from suitable plastic material by a molding operation and a longitudinal resilient flat spring-like member I4 will be molded in sections forming the head.

The member [4 for the molding operation will be placed in the mold as is common in molding operations and will be shaped to extend in and through the intermediate sections with its opposite ends extending into the sections 8 and I2.

The resilient member 14 according to the invention will be an elongated strip of plastic material such as nylon and will be relatively thin.

Said member It may have openings [6 in opposite ends thereof and will have notches I8 along opposite longitudinal edges thereof, more or less separating its length into sections 20, 22 and 24 correspondin to the sections 8, l0 and 12 of the toothbrush head 6.

The molding operation and arrangement of the member It will be such that the notches I8 will correspond with narrow transverse spaces 26 between the sections of the head. In this way the member [4 has a transverse width somewhat less than the adjacent sections 8, I0 and I2. These narrow portions between notches provide flexibility to the member I4 at the spaces between the head sections.

The member It being formed from such plastic material has great flexibility and strength so that the head sections are relatively movable.

As disinguished from a metallic member I 4, the plastic provides greatly increased flexibility without rupture. A brush head incorporating a steel resilient member has a much shorter life than where the nylon member is used. From very 3 many tests on the same machine for flexing the head sections, steel resilient members have been found to set and rupture in 300,000 to 400,000 flexes while with the resilient members of this invention there have been no ruptures in 3,000,000 flexes.

Furthermore, the resilient member of this invention does not corrode during use of the toothbrush, there is no tendency for it to set from constant useeand stapling may extend through the resilient member. With metallic resilient member stapling may not impinge or pass therethrough so that according to the invention it is possible to more securely fix the tufts of loristles in the head and the bond between the plastic resilient member is far superior to that-possible" between plastic and metal. a

In some manufacturing procedures, sockets for bristle tufts are provided in the molding operation. In others, sockets are formed in the molded toothbrush.

The'bristletuftsare secured in;the sockets ordinarily by small ,wire staples which engage intermediate portionstof the bristles and are driven or pressed into'theplastic atthe bottoms of the sockets.

According to this invention, sockets extending to the resilient member 5114 may :be provided in the moldingoperation or :they may be formed by drilling the molded toothbrush and if desired the drilling may extend v.thrbugh the member it which would be impracticable were the resilient membermadefrom springmetal.

Fig. 5 illustrates oneform of staple 28 holding the :bristles all {Of --a :tu ft :32. This staple formed fromsmallsize-wire extends-through the resilient: member H1 .intozithe bristle sections and securely anchors the .tuftin :place.

It is stated that the resilient=member may be formedfrom nylon. :Nylon is the generic name for materials defined-as synthetic fibereforming polymeric amides having proteinlike chemical structure derived zfrom coal, air and water, or other substances and characterized by extreme toughness and strength. Nylon has superior flexibility, possesses great strength, resists fatiguerbyxflexingr-as .well as corrosion, and bristle stapling 'may :extend rtherethrough without impairing-itsdesirable:characteristics. It will be understood :that plastic material not only includes nylon but vothertypes of plastics which have the importantichai acteristics mentioned.

The-invention may be embodied in other specific iorms withoutdeparting from the essentialcharacteristics thereof. Hence, the present embodiments are therefore to'beconsidered in all respects merely as being illustrative and not as being restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all modifications and variations as fall within the meaning and purview and range of equivalency of the appended claims are therefore intended to be embraced therein.

What it is desired to claimand secure by Letters Patent of the United Statesiis:

1. A brush construction of the type wherein bristle carrying sections are connected by a resilient member for relative flexing movements comprisingin combination, opposite end sections and a plurality of intermediate sections therebetween ofplastic material molded about an elongated relativelythin resilient member having opposite ends in said end sections and an intermediate portion extending through said plurality of intermediate sections, and tufts of bristles secured to said sections by staples extending through said resilient member .and being anchored in the upper portions :of saidsections.

2. A brush construction as set forth in claim 1 wherein said resilientmember is;formed. from nylon.

3. A toothbrush having a flexible 'headcomprising, an elongatedshandleandea sectionalized head atone end thereof enclosing a resilient member, said head including; an inner head section integral withanend ofsaid handle'andan outer head section and a plurality of .interme diate head sections therebetween,.-said resilient member comprising .a strip .of resilient plastic having opposite endsdisposed inthe innerland outer head sectionsand having an intermediate portion extending through said intermediateesections, and transversely spaced-rows of longitudi nally spaced tufts of bristles'secured to said sections by staples'extending'through said resilient member andbeingianchoredin the upper portions of said sections.

:LQUIS R. BRE'SSLER.

References Cited inlthe file of this patent UNITED STATES PATENTS Number Name Date 1,466,723 Izaw-a Sept. 4, 1923 1,919,010 Connor July 18, 1933 1,928,328 Carpentier Sept. 26, 1935 2,254,365 Grihith et a1. -Sept.f2, 1-341 FOREIGN PATENTS Number 7 Country Date 809,749 France Dec. 12, 1936

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1466723 *Nov 12, 1921Sep 4, 1923Riichiro IzawaToothbrush
US1919010 *Jul 27, 1931Jul 18, 1933Connor James FBrush
US1928328 *Nov 25, 1931Sep 26, 1933Erik Dempster LindegrenToothbrush
US2254365 *Jun 6, 1939Sep 2, 1941Griffith Edward EConvertible toothbrush
FR809749A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3018498 *Jun 28, 1960Jan 30, 1962Wasserman Bernard HFinger brush
US5351358 *Aug 27, 1992Oct 4, 1994Larrimore BabatuToothbrush
US5396678 *Nov 2, 1992Mar 14, 1995The Gillette CompanyToothbrush with rectangular bristles
US5758383 *Dec 10, 1996Jun 2, 1998Colgate-Palmolive CompanyContouring toothbrush head
US6073299 *Jul 12, 1999Jun 13, 2000Colgate-Palmolive CompanyContouring toothbrush head
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
US6219874Jul 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
US6353958 *Sep 1, 1995Mar 12, 2002Coronet-Werke GmbhToothbrush
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
US6505373Apr 18, 2001Jan 14, 2003The Procter & Gamble CompanyToothbrush
US6514445Dec 12, 1997Feb 4, 2003The Procter & Gamble CompanyBrush making
US6675428 *Dec 15, 2000Jan 13, 2004Smithkline Beecham Consumer Healthcare GmbhToothbrush comprising a resilient flex region
US6817054 *Jun 20, 2003Nov 16, 2004Colgate-Palmolive CompanyToothbrush
US6996870Apr 1, 2002Feb 14, 2006Colgate-Palmolive CompanyContouring toothbrush head
US7024720 *Nov 16, 2004Apr 11, 2006Colgate-Palmolive CompanyToothbrush
US7614111Oct 24, 2005Nov 10, 2009Colgate-Palmolive CompanyOral care implement
US7707676Jun 30, 2006May 4, 2010The Procter & Gamble CompanyToothbrush
US7721376Dec 23, 2004May 25, 2010Colgate-Palmolive CompanyOral care implement
US7841041May 8, 2006Nov 30, 2010Colgate-Palmolive CompanyOral care implement
US7962992Dec 23, 2005Jun 21, 2011The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
US7975346Mar 31, 2010Jul 12, 2011Colgate-Palmolive CompanyOral care implement
US8060970Mar 11, 2010Nov 22, 2011The Procter & Gamble CompanyToothbrush
US8156599Oct 3, 2007Apr 17, 2012Colgate-Palmolive CompanyOral care implement having a head insert
US8281448Oct 3, 2007Oct 9, 2012Colgate-Palmolive CompanyOral care implement having one or more moving sections
US8327492May 16, 2011Dec 11, 2012The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
US8332985Nov 18, 2011Dec 18, 2012The Procter & Gamble CompanyToothbrush
US8533889Mar 21, 2012Sep 17, 2013Colgate-Palmolive CompanyOral care implement having a head insert
US8578544Jan 31, 2008Nov 12, 2013The Gillette CompanyOral hygiene implements having flexible elements, and methods of making the same
US8578546Oct 2, 2012Nov 12, 2013Colgate-Palmolive CompanyOral care implement having one or more moving pieces
US8695146Sep 3, 2013Apr 15, 2014Colgate-Palmolve CompanyOral care implement having a head insert
USRE38521Jul 28, 1999May 25, 2004Lingner & Fischer GmbhToothbrush with resiliently flexible head
DE1031276B *Feb 18, 1955Jun 4, 1958Louis Richard BresslerBuerste
WO1994009677A1 *Oct 29, 1993May 11, 1994William A BredallToothbrush
Classifications
U.S. Classification15/167.1, 15/199
International ClassificationA46B7/00, A46B7/06
Cooperative ClassificationA46B5/0025, A46B7/06
European ClassificationA46B5/00B1, A46B7/06