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Publication numberUS2172624 A
Publication typeGrant
Publication dateSep 12, 1939
Filing dateAug 25, 1937
Priority dateAug 25, 1937
Publication numberUS 2172624 A, US 2172624A, US-A-2172624, US2172624 A, US2172624A
InventorsRobert Gabriel Romani Y
Original AssigneeRobert Gabriel Romani Y
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tooth brush
US 2172624 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

G. ROMANI Y ROBERT 2,172,624

TOOTH BRUSH Sept. 12, 1939;

Filed Aug. 25, 1957 Patented Sept. 12, 1939 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to improvements in tooth brushes.

The prime object of the invention is to provide a mounting for the bristles in a manner, that as the brush is reciprocated when in use, the bristles will oscillate to afford a better cleaning action.

A further object of the invention is the provision of brush units which may at will be removed and/or replaced.

Another and broader object of the invention is the provision of means for mounting a. series of brush units, so arranged that they oscillate in the reciprocation of the brush when in use.

In the accompanying drawing:

Figure 1 is a plan view of my improved tooth brush.

Figure 2 is a central vertical section of the same.

' Figure 3 is a detail view of a brush unit holder.

Figure 4 is an end view of the brush holder. Figure 5 is a cross section. Figure 6 is a detail view of one of the brush units. Figure 7 is a sectional view partially in elevation of the brush units and holder.

Figure 8 is a perspective view of a slightly modified form of the invention.

Figure 9 is a detail view of a modified way of a mounting the brush units.

In the drawing, l indicates a brush unit holder comprising two members 2 and 3 hinged together at 4 and provided at their opposite ends with threads 5. The members 2 and 3 have oilset portions, as at 6, and in opposite side walls are aligned openings 1. The free or. threaded ends of the members 2 and 3 are formed, respectively, with a rib 8 and groove 9. These ends are semicircular where threaded, so that when they are f brought together they form'a threaded split bolt,-

the rib and groove holding the two parts in relation.

When the two members 2 and 3 are in closed 45 position, as shown in Figure 1, the offset porend of which is rotatably mounted a feed screw It, on which is-threaded a nut or follower l5 which fits snugly within the handle ll.

In the member 2 is a duct it which communicates with the interior of the hollow handle, I while the outlet end is located in the rear of the inner brush unit.

When the parts are assembled as shown in. Figures 1 and 2, the brush units are held in op-' erative relation by the threaded connection between the free ends of the handle. The brush units being spaced apart as shown allows for a Slight oscillating movement when the brushis reciprocated in use. For instance, as the brush moves, say in one direction over the teeth, the units rock on their pivots, as best shown in Fig- -ure 7. Obviously, in the reverse movement, the

units rock in the opposite direction.

The spaces between the units are, of course, just suflicient to permit one block to contact with U the adjacent block to prevent dislocation of the unit'and yet afiord sufiicient movement to allow the necessary oscillation of the unit.

Tooth paste is stored in the hollow handle and is fed to or adjacent the bristles of the units by a turning the screw I! and forcing the nut II toward the brush end, the paste exuding through the opening I6.

If it be desired to replace the brush units, the holder I is unscrewed from the handle, the members 2 and 3 opened up (as shown in Figure 3) which frees the units. Other units may be quickly inserted,the members I and 2 drawn together and the holder threaded into the handle.

In the modified form of the invention shown in Figures 8 and 9, a solid handle 20 is employed, the handle having a cut out portion 2|, to form a seat for the brush units. The units are the same and are spaced the same as before described, except that in lieu of trunnions, the pins 9 l2 are used, the pins passing through aligned openings in the side walls of the cutout portion 2|. a

The' units in this construction operate exactly the same as the preferred form of the 'invention.

From the foregoing description, it is evident I have provided a brush which, when in use, imparts an oscillating action to the bristles, which insures of the bristles engaging the entire exposed tion when the handle is moved in the opposite direction. It is to be noted further that the blocks are free to swing on their pivots in response to the resistance of the bristles on the teeth in the movement of the handle and that 0 this freedom of movement of the blocks is limited in both directions by engagement with the adjacent blocks. Therefore, the blocks have a limited free swinging movement during the cleansing operation and this swinging movement is controlled by the contact of the bristles with the teeth and is reversed in each operative longitudinal movement of the handle.

What I claim is:

A tooth brush having a bristle body of hollow formation, including side bars, a series of blocks pivotally mounted in the side bars transversely of the bristle body and free for limited swinging movement in both directions, each of the blocks having a length exceeding the thickness and with the pivots extending from the bars at approximately mid-length of their side walls, the blocksin their pivoted relation being spaced apart from each other and from the ends of the hollow formation of the body in which they are mounted. with the spacing such to permit free swinging movement of each bar in either direction until the respective end walls of adjacent blocks contact to limit such swinging movement, the free limited swinging movement of the blocks being designed to arrange the bristles at relatively reverse inclinations to the plane of the body in the reciprocating movements. of the body during the use of the brush in cleaning the teeth.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2418344 *Jan 12, 1945Apr 1, 1947Goldberg Abraham AToothbrush
US2558290 *Nov 1, 1946Jun 26, 1951Homer A BrownRemovable bristle brush
US2893031 *Nov 25, 1957Jul 7, 1959Rudolf DenglerDisposable head tooth brush
US4269207 *Dec 27, 1979May 26, 1981Czeslaw KonradCombined toothbrush-toothpaste container
US4622984 *Apr 4, 1984Nov 18, 1986Gaebel Gary RToothbrush
US4827550 *May 4, 1988May 9, 1989Dental Research CorporationRemovable head mechanism for automatic cleaning device
US5158383 *Jun 21, 1991Oct 27, 1992International Consumer ProductsPaste dispensing brush
US5242235 *Aug 5, 1992Sep 7, 1993Jianxing LiToothbrush
US5269038 *Aug 16, 1991Dec 14, 1993Bradley Terry GRocker toothbrush
US5398366 *Sep 10, 1993Mar 21, 1995Bradley; TerryRocker toothbrush
US5651158 *May 9, 1995Jul 29, 1997Lingner & Fischer GmbhToothbrush with resiliently flexible head
US5836036 *Jun 20, 1997Nov 17, 1998Ivory; BrianSelf cleaning toothbrush
US5839148 *Apr 17, 1997Nov 24, 1998The Procter & Gamble CompanyToothbrush with both stationary and moving tufts
US5974614 *Mar 2, 1998Nov 2, 1999Ross; Keith B.Triple brush gum blaster
US6178582Aug 22, 1996Jan 30, 2001Smithkline Beecham Consumer Healthcare GmbhToothbrush comprising a resilient flex region
US6219874Jul 12, 1995Apr 24, 2001The Procter & Gamble Co.Resiliently flexible bristle bearing head toothbrush
US6314605Aug 1, 1997Nov 13, 2001The Procter & Gamble CompanyToothbrush
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
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
US6952854Aug 27, 2004Oct 11, 2005The Procter & Gamble CompanyComplex motion toothbrush
US7124461Aug 30, 2004Oct 24, 2006The Procter & Gamble CompanyComplex motion toothbrush
US7354112Feb 27, 2006Apr 8, 2008Trisa Holding AgToothbrush and process for producing such a toothbrush
US7445295Nov 30, 2007Nov 4, 2008Trisa Holding AgToothbrush and process for producing such a toothbrush
US7451514Aug 29, 2006Nov 18, 2008The Procter & Gamble CompanyComplex motion toothbrush
US7458647Nov 30, 2007Dec 2, 2008Trisa Holding AgToothbrush and process for producing such a toothbrush
US7478960Sep 21, 2004Jan 20, 2009Glover J ScottDispensing brush
US7520571Feb 11, 2008Apr 21, 2009Trisa Holding AgToothbrush and process for producing such a toothbrush
US7636976Jul 20, 2006Dec 29, 2009The Procter & Gamble CompanyPower toothbrush
US7640614May 8, 2007Jan 5, 2010The Procter & Gamble CompanyMulti motion toothbrush
US7640615Jul 14, 2006Jan 5, 2010The Procter & Gamble CompanyElectric toothbrushes
US7698771Dec 17, 2004Apr 20, 2010The Procter & Gamble CompanyElectric toothbrush
US7707676Jun 30, 2006May 4, 2010The Procter & Gamble CompanyToothbrush
US7725973Aug 16, 2007Jun 1, 2010The Procter & Gamble CompanyElectric toothbrushes
US7761947Feb 21, 2006Jul 27, 2010The Procter & Gamble CompanyComplex motion toothbrush
US7810201Dec 3, 2007Oct 12, 2010Braun GmbhToothbrushes
US7832042Nov 4, 2008Nov 16, 2010The Gillette CompanyBrush head for toothbrush
US7861348Dec 7, 2005Jan 4, 2011The Procter & Gamble CompanyElectric toothbrushes
US7861350Dec 11, 2009Jan 4, 2011The Procter & Gamble CompanyMulti-motion toothbrush
US7917984Dec 14, 2009Apr 5, 2011The Procter & Gamble CompanyElectric toothbrushes
US7941886Sep 19, 2003May 17, 2011Braun GmbhToothbrushes
US7962992Dec 23, 2005Jun 21, 2011The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
US7975344Jul 6, 2007Jul 12, 2011The Gillette CompanyToothbrush head
US7988238Mar 11, 2009Aug 2, 2011Trisa Holding AgToothbrush and process for producing such a toothbrush
US8060970Mar 11, 2010Nov 22, 2011The Procter & Gamble CompanyToothbrush
US8096011Dec 16, 2010Jan 17, 2012The Procter & Gamble CompanyElectric toothbrushes
US8156600Sep 9, 2008Apr 17, 2012The Gillette CompanyGum massaging oral brush
US8281443Dec 9, 2010Oct 9, 2012The Procter & Gamble CompanyMulti-motion toothbrush
US8327492May 16, 2011Dec 11, 2012The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
US8332982Aug 24, 2009Dec 18, 2012The Gillette CompanyVibrating toothbrush
US8332985Nov 18, 2011Dec 18, 2012The Procter & Gamble CompanyToothbrush
US8528148Jun 7, 2011Sep 10, 2013The Gillette CompanyToothbrush head
US8584299Jul 25, 2007Nov 19, 2013The Procter & Gamble CompanyElectric toothbrushes
US8621698Apr 6, 2011Jan 7, 2014Braun GmbhToothbrushes
US8955186Oct 15, 2013Feb 17, 2015The Procter & Gamble CompanyElectric toothbrushes
USRE38521Jul 28, 1999May 25, 2004Lingner & Fischer GmbhToothbrush with resiliently flexible head
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
USRE44819Apr 8, 2004Apr 1, 2014Procter & Gamble Business Services Canada CompanyToothbrush
USRE45141Dec 20, 2002Sep 23, 2014Trisa Holding AgToothbrush and process for producing such a toothbrush
WO1983002218A1 *Dec 30, 1982Jul 7, 1983Sylvain NahumTooth brush
WO1992017094A1 *Mar 30, 1992Oct 15, 1992Terry G BradleyRocker toothbrush
WO2008121010A1 *Apr 2, 2008Oct 9, 2008Gary Craig ProwseBrush with pivoting bristle platform
U.S. Classification15/167.1, 401/286, 401/175, 15/202, 401/137, 15/176.1, 15/22.1, 401/268
International ClassificationA46B11/00
Cooperative ClassificationA46B11/0027
European ClassificationA46B11/00C6B2