|Publication number||US2209173 A|
|Publication date||Jul 23, 1940|
|Filing date||Dec 22, 1936|
|Priority date||Dec 22, 1936|
|Publication number||US 2209173 A, US 2209173A, US-A-2209173, US2209173 A, US2209173A|
|Inventors||Russell Allie Young|
|Original Assignee||Russell Allie Young|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (53), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
July 23, 1940.
A. Y. RUSSELL 9,173
TOOTHBRUSH Filed Dec. 22, 1936 Patented July 23, 1940 UNITED STATES PATENT OFFICE Application December 2 7 Claims.
This invention relates to a new and improved form of toothbrush for cleaning and polishing all the surfaces of the teeth and for massaging the gums. Some tooth surfaces are exposed and are practically immune to the ravages of tooth decay, while the grooves, fissures and the approximal contact surfaces are susceptible.
None of the conventional types of toothbrushes, with round bristles, cleanse and polish these susceptible areas properly. The round bristles can cleanse only that portion of the tooth surface which its round surface contacts. However, when a round toothbrush bristle, of a given diameter, is reduced to a fiat bristle it will contact, cleanse and polish many times as much tooth surface.
In the accompanying drawing:
Fig. l is a side view of a toothbrush assembled in accordance with the invention;
Fig. 2 is a sectional view taken adjacent the base of the bristles;
Fig. 3 shows a step in the assembly of the bristles;
Fig. 4 is an end view of an elongated tuft of bristles in assembled position after the flattening operation;
Fig. 5 is a view of three elongated tufts of bristles contacting at their outer edges.
In a preferred form of the invention a toothbrush head and handle I0 is provided with three sets of elongated tufts of flat bristles l arranged across the brush head and two sets of shorter elongated tufts of flat bristles 2 arranged essentially at right angle to and in alternate position with the three sets of cross elongated tufts of bristles.
The flat type of bristles are arranged in flat continuous elongated tufts of bristles instead of ordinary bunches of bristles forming tufts, so as to properly cleanse and polish the interdental areas which are more susceptible to tooth decay, and at the same time stimulate the gums by side massage action which increases its tone and prevents pyorrhea. Flat bristles will penetrate more deeply into grooves, fissures and the susceptible interdental spaces than the round bristles by virtue of their wedging action and thereby increase brushing efliciency. As disclosed in Fig. l, I represents a continuous center elongated tuft of flat bristles with elongated tufts of bristles on each side of the center elongated tuft of bristles to afford support, and to more properly fill in the interdental spaces to polish caries susceptible tooth areas and massage the gums.
As further disclosed in Fig. 1, 2 represents similar elongated tufts of smaller and shorter bristles 2, 1936, Serial No. 117,189
placed essentially at right angles to the first set of elongated tufts of bristles, for the purpose of cleansing and polishing the exposed surfaces of the teeth and for massaging the adjacent portion of the gum.
To produce flat bristles and retain them in their flat position it is necessary for them to be clamped into flat continuous elongated tufts of bristles as disclosed in Fig. 4 and subjected to the flattening operation prior to their being placed 10 into the head of -the toothbrush at the proper position and at the proper inclination to the center row as indicated in Fig. 5.
The bristles are anchored by folding them substantially at their midpoint about a pin 5, insert- 15 ing the folded bristles and pin in a U-shaped metal strip 6 and thereafter clamping the strip about the pin and bristles. This forms a secure attachment for the bristles and also keeps them in a continuous flat elongated tuft. The bristles 20 now may be flattened on two sides and are then ready to be placed in the brush head. The flattening operation may be carried out in any desired manner; for example, the bristles may be flattened by placing a continuous elongated tuft 25 of bristles on a plane surface and subjecting the bristles to the action of a grinding tool. This action is continued until the round side of the bristle has been removed and a flattened side formed thereon as indicated in the views shown in 30 Figs. 1 and 4. The continuous elongated tuft of bristles may then be turned over and the above operation carried out on the reverse side thereof.
In this specification and claims, when the term elongated tuft, or a similar term, is used a dis- 85 tinction must be made between that term and what is ordinarily known as tuft of bristles, or bulk of bristles. Elongated rows of bristles as herein set forth as described consist of flat bristles in elongated rows as heretofore described and 40 set forth in the claims, and may be flattened en masse in such rows by flattening the rows against a flat grinding surface, first on one side and then the other side of the bristles.
Having thus described this invention, what I claim to be new, and on which I desire to secure by Letters Patent is:
l. A toothbrush having an elongated tuft of bristles in contact with each other at their outer ends, the outer sides of the bristles being flattened to provide sides inclined to the longitudinal axis of the bristles, forming an elongated tuft of bristles having flattened faces on opposite sides tapering to a flat end edge.
2. A toothbrush having a plurality of tufts as groups comprising a centrally located elongated vertical tuft of flat bristles and outer tufts of flat bristles inclined towards said central tuft to form an inverted V-shaped brushing surface.
4. A toothbrush having tufts of flat bristles as claimed in claim 1, said tufts being assembled in a plurality of groups, each of said groups comprising a centrally located elongated vertical tuft of flat bristles and outer tufts of flat bristles inclined towards said central tuft, said groups being alternately positioned transversely and longitudinally of the brush head.
5. In a brush, a plurality of elongated tufts of flat bristles, the sides of each tuft being tapered for a considerable distance along the bristles to form a sharp outer edge in contact with similar edges of the other tufts inclined thereto.
6. A bristle adapted for use in a toothbrush comprising a body portion of a hard. resilient character having flat surfaces on opposite sides thereof, said surfaces meeting each other at the outer end of said bristle thus forming a bristle having substantially flat sides extending over a major portion thereof, whereby uniform action 1ciigdbendingand stiifening in cleaning action is each tapering towards their outer free end which ends contact with each other.
ALLII. Y. RUSSMI.
L's toothbrush having an elongated tuft of
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2599191 *||Jul 2, 1947||Jun 3, 1952||Roland J Meunier||Dental brush having looped bristles|
|US2637870 *||Jan 11, 1949||May 12, 1953||Cohen Max H||Toothbrush construction|
|US3007441 *||May 18, 1959||Nov 7, 1961||Bird A Eyer||Tooth brush for use on domestic animals|
|US4115893 *||May 4, 1977||Sep 26, 1978||Pigeon Kabushiki Kaisha||Gum brush for infants|
|US5335389 *||Mar 29, 1990||Aug 9, 1994||Colgate-Palmolive Company||Plaque removing toothbrush|
|US5446940 *||Jun 8, 1994||Sep 5, 1995||Colgate-Palmolive Company||Toothbrush|
|US5459899 *||Dec 7, 1994||Oct 24, 1995||Bauer; Jerome||Interstitial flossing toothbrush|
|US5628082 *||Mar 22, 1995||May 13, 1997||Colgate-Palmolive Company||Toothbrush with improved efficacy|
|US5724697 *||Aug 2, 1996||Mar 10, 1998||Colgate-Palmolive Company||Toothbrush construction|
|US5758383 *||Dec 10, 1996||Jun 2, 1998||Colgate-Palmolive Company||Contouring toothbrush head|
|US5799353 *||Nov 27, 1996||Sep 1, 1998||Sunstar Inc.||Toothbrush|
|US6073299 *||Jul 12, 1999||Jun 13, 2000||Colgate-Palmolive Company||Contouring toothbrush head|
|US6202241 *||Sep 10, 1998||Mar 20, 2001||Optiva Corporation||Brushhead for use in an acoustic toothbrush|
|US6314606||Oct 22, 1999||Nov 13, 2001||Colgate-Palmolive Company||Contouring toothbrush head|
|US6370726 *||Feb 11, 2000||Apr 16, 2002||Lata R Kini||Dynamic toothbrush|
|US6442787||Jul 3, 2001||Sep 3, 2002||Colgate-Palmolive Company||Contouring toothbrush head|
|US6957469 *||Mar 11, 2003||Oct 25, 2005||Church & Dwight Co., Inc.||Toothbrush|
|US6996870||Apr 1, 2002||Feb 14, 2006||Colgate-Palmolive Company||Contouring toothbrush head|
|US7721376||Dec 23, 2004||May 25, 2010||Colgate-Palmolive Company||Oral care implement|
|US7908699||Dec 23, 2004||Mar 22, 2011||Colgate-Palmolive Company||Oral care implement|
|US8079110||May 26, 2010||Dec 20, 2011||Colgate-Palmolive Company||Oral care implement|
|US8393042||Oct 9, 2009||Mar 12, 2013||Colgate-Palmolive Company||Oral care implement|
|US8561247||Jun 17, 2011||Oct 22, 2013||Colgate-Palmolive Company||Oral care implement|
|US8595886||Jun 16, 2011||Dec 3, 2013||Dr. Fresh, Llc||Bristle configuration|
|US8776302||Aug 29, 2008||Jul 15, 2014||Colgate-Palmolive Company||Oral care implement|
|US8800093||Dec 2, 2011||Aug 12, 2014||Colgate-Palmolive Company||Oral care implement|
|US8806695||Mar 20, 2012||Aug 19, 2014||Colgate-Palmolive Company||Oral care implement having flexibly supported cleaning elements extending in opposite directions|
|US8839481||May 7, 2013||Sep 23, 2014||Colgate-Palmolive Company||Oral care implement|
|US8857003||Aug 18, 2008||Oct 14, 2014||Colgate-Palmolive Company||Contouring toothbrush head|
|US8876221||Aug 23, 2011||Nov 4, 2014||Colgate-Palmolive Company||Oral care implement|
|US8943634||May 2, 2012||Feb 3, 2015||Water Pik, Inc.||Mechanically-driven, sonic toothbrush system|
|US8990996||Oct 8, 2012||Mar 31, 2015||Colgate-Palmolive Company||Toothbrush|
|US9144477||Dec 23, 2014||Sep 29, 2015||Water Pik, Inc.||Mechanically-driven, sonic toothbrush system|
|US9167888||Jul 10, 2014||Oct 27, 2015||Colgate-Palmolive Company||Oral care implement having flexibly supported cleaning elements extending in opposite directions|
|US9198501||Nov 26, 2013||Dec 1, 2015||Dr. Fresh, Llc||Bristle configuration|
|US9468511||Mar 15, 2013||Oct 18, 2016||Water Pik, Inc.||Electronic toothbrush with vibration dampening|
|US20020152570 *||Apr 1, 2002||Oct 24, 2002||Douglas Hohlbein||Contouring toothbrush head|
|US20030208865 *||Mar 11, 2003||Nov 13, 2003||Unilever Home & Personal Care Usa, Division Of Conopco, Inc.||Toothbrush|
|US20050166344 *||Dec 23, 2004||Aug 4, 2005||Colgate-Palmolive Company||Oral care implement|
|US20050189000 *||Dec 23, 2004||Sep 1, 2005||Cacka Joe W.||Flosser with motor integrated with vibrating head|
|US20100050356 *||Aug 29, 2008||Mar 4, 2010||Colgate-Palmolive Company||Oral care implement|
|USD631257||Dec 15, 2009||Jan 25, 2011||Colgate-Palmolive Company||Toothbrush|
|USD632084||Dec 15, 2009||Feb 8, 2011||Colgate-Palmolive Company||Toothbrush|
|USD642802||Dec 15, 2009||Aug 9, 2011||Colgate-Palmolive Company||Toothbrush|
|USD642803||Dec 15, 2009||Aug 9, 2011||Colgate-Palmolive Company||Toothbrush|
|USD642804||Dec 15, 2009||Aug 9, 2011||Colgate-Palmolive Company||Toothbrush|
|USD655916||Dec 15, 2009||Mar 20, 2012||Colgate-Palmolive Company||Toothbrush|
|USD655917||Dec 15, 2009||Mar 20, 2012||Colgate-Palmolive Company||Toothbrush|
|USD655918||Dec 15, 2009||Mar 20, 2012||Colgate-Palmolive Company||Toothbrush|
|USD671325||Dec 15, 2009||Nov 27, 2012||Colgate-Palmolive Company||Toothbrush|
|EP0449655A1 *||Mar 28, 1991||Oct 2, 1991||Colgate-Palmolive Company||Toothbrush|
|WO1999045819A1||Mar 11, 1999||Sep 16, 1999||Colgate-Palmolive Company||Prophy toothbrush|
|WO2015183272A1 *||May 29, 2014||Dec 3, 2015||Colgate-Palmolive Company||Oral care implement|
|U.S. Classification||15/167.1, 15/195|