Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS2668973 A
Publication typeGrant
Publication dateFeb 16, 1954
Filing dateDec 18, 1947
Priority dateDec 18, 1947
Publication numberUS 2668973 A, US 2668973A, US-A-2668973, US2668973 A, US2668973A
InventorsGlaza Vincent J, Glaza William C
Original AssigneeGlaza Vincent J, Glaza William C
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Toothbrush having a removable head
US 2668973 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Feb. 16, 1954 V. J. GLAZA ET AL TOOTHBRUSWHAVING A REMOVABLE HEAD Filed Dec. 18, 1947 Patented Feb. 16, 1954 UNITED STATES PATENT OFFICE TQQTHBRUSHZZfiA REMOVABLE Vincent JaGlazai and William-.0. Glaze...

Detroit, Mich..-

'Appllcationnecember 1s, r947;jseriainmaeznso' ..3'..Gl'aims-. (Cl.15.-+176;)1

Gur'i'nvention rel'atesto a new and useful improvement in a tooth brush and has for its object, the provision. of a... tooth brush. so. arranged andconstructed' that the bristle bearing portion may be easilyand quickly removed from the handle omwhich mounted andreplaced with'another one; thus providing a sanitary arrangement whereby the repeated use ofv used tooth, brushes may be avoided. This sanitary feature of the invention is: important in that it.makes it;possible for a. person having some disease of: the mouth or gums to prevent infection or spreading; of the. disease and also eliminate the possibility of retarding the elimination. or cure of the disease:

Another objectof the. invention is the provision in a toothbrush of" this-class of a handle having; a resilient gripping; portion adapted. for gripping the bristle bearings; portion and holding; it? rigid and. firmain. position: while, at the same time, so constructed and arranged that a bristle bearing portion may be slid out of position and replaced with another.

Another object of the invention is the provision of a tooth brush of this class having a removable bristle bearing portion and provided with yieldable means for normally retaining the bristle bearin portion in operative position.

Another object of the invention is the provision in a tooth brush of this class of a bristle bearing portion having a back or body provided with a recess at one end and a tapered portion at the other adapted for sealing in a similar recess so that one of the members may be replaced by pressing thereagainst with the member which is intended to replace.

Other objects will appear hereinafter.

It is recognized that various modifications and changes may be made in the detail of structure illustrated without departing from the invention and it is intended that such shall be embraced within the scope of the claims which form a part hereof.

Forming a. part of this specification are drawings in which,

Fig. 1 is a perspective view of the invention,

Fig. 2 is a perspective view in fragment of the handle with parts broken away,

Fig. 3 is a perspective view of the bristle hearing portion showing it in inverted position,

Fig. 4 is a perspective view of the bristle bearing portion illustrating one end,

Fig. 5 is a perspective view of the bristle bearing portion illustrating the opposite end,

Fig. 6 is a fragmentary, sectional view taken on line 6--6 of Fig. 1,

Fig. 7 is a slightly enlarged sectionalview-taken on'line-l -l ofFig: 6.

As shown in thedrawing, the invention com prises a handle II which is preferably formed from: resilient material such as plastic or metal. This handle is provided with alongitudinallyxexitending channel l2 adjacent the forwarctor: outer end of the handle. Said. channelincludesat. its open end: an: inwardly-longitudinally.for a distance; of, approximately one: half the: lengthrof the: channel 512: the: oppositelyxdisposedz. side: wall portions. I35 andv M which. projeca'beyond; the planeof the handle. It. will, be. noted that: the side portions; I3; and-I14 cooperate at; the open end 0f; said ,ch-anneltoprovide; a..passage .of;:,great-:.- er depth than the inner portion: of; the channel. This feature: provides; for: more. eliicient,v in:-

sertion of: a. replacement; brushw body as. will be,- hereinafter; described. Extending. inwardly from; the; wall: |:3; is a: g'r-ippingjflange: | and'sa similar: gripping: flange Ma: extends inwardly from the wall M, the channel l2 also being provided with a bottom l5.

Formed in this bottom I5 is a longitudinally directed slot l 6, extending over which is one end of a leaf spring I! which is attached at its opposite end to the bottom l5 and which is provided intermediate its end with a transverse rib The brush comprises a back or body l9 projecting outwardly from the front face of which are the bristles 20. Formed in the back face I9 is a transversely extended groove 2| adapted for receiving the rib l8. One end of this body [9 is formed tapered, as at 22, and the opposite end is provided with a recess or pocket 23 in which the tapered end 22 is adapted to seat snugly.

It will be noted that the groove 2| is V-shaped in cross section and that the rib I8 is also V- shaped in cross section. In inserting the brush body l9 into position, it is slid into position from the inner end of the channel with the in-turned flanges I30. and Ma bearing snugly against the front face of the body l9 and the walls l3 and I4 being slightly sprung apart so that there is frictional engagement between the body l9 and this channel portion in which it i seated. When the groove 2| comes into registration with the rib l 8, this rib l8 will snap into the groove 2| and serve to assist in holding the bristle bearing portion in position and in fixed relation to the handle I The leaf spring I! serves to maintain the face of the body l9 in close engagement with the faces of the inturned flanges |3a and Ma so that should there be any play, this frictional engagement will still take place.

When it is desired to replace the bristle bearing portion, the replaceable body is placed in the inner portion of the channel [2 with its tapered end 22 in engagement with the recess or pocket 23 of the worn body. By pressing outwardly on this new body, the old unit is dislodged and slides longitudinally out of the channel I2, the rib l8 riding out of the groove 2|, and when the used body clears the channel it will fall out and the new body will be in position, the rib l8 snapping into the groove 2! of the new body. The inner portion of the channel serves to guide the new body into the outer portion of the channel and direct the ejecting force in a straight line along the longitudinal axis of the worn body. It will also be noted that the relatively shallow depth of the inner portion of th channel enables the user of the device to more easily engage the replacement unit with the fingers during the ejecting operation.

In this way, there is provided an economical tooth brush in which a sanitary condition, both of the tooth brush and the mouth, may be facilitated and maintained, at all times, with the additional advantages of a comparatively new brush being accessible for use.

What we claim as new is:

1. A tooth brush of the class described comprising a handle having a channel formed in one end thereof extending longitudinally of said handie and open at its outer end, a replaceable bristle bearing insert snugly slidable in said channel, said channel having a length of at least twice the length of said insert, the portion of said channel adjacent said open end and inwardly longitudinally for a distance equal to or less than the length of said insert having relatively short, inwardly directed projecting portions adapted to extend over the longitudinal edges of said insert and prevent its moving out of said channel in a A 4 direction transversely of said handle, and resilient friction means associated with said handle and said insert to normally hold said insert in position for use adjacent the open end of said channel under said projecting portions.

2. A tooth brush as set forth in claim 1, wherein the side walls of said channel adjacent the open end and inwardly longitudinally of said handle for a distance equal to or less than the length of said insert project beyond the plane of the face of said handle in which said channel is formed, the inner portion of said channel thereby being of less depth than said insert holding portion.

3. A tooth brush as set forth in claim 1, Wherein said replaceable bristle insert is rounded at one end and has a socket formed in the opposite end thereof.


References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 730,040 McKinley June 2, 1903 959,574 Moore May 31, 1910 1,199,268 Haller Sept. 26, 1916 1,497,214 Osborn Feb. 21, 1922 1,731,751 Neissl Oct. 15, 1929 1,744,271 Kingman Jan. 21, 1930 1,947,720 Laub Feb. 20, 1934 2,017,660 Jahn Oct. 15, 1935 2, .i86fl62 Fticlner Oct. 25, 1949 FOREIGN PATENTS Number Country Date 2 15978 Great Britain 1909 339,485 Great Britain Dec. 11, 1930

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US730040 *Mar 29, 1902Jun 2, 1903Henry C MckinleyFountain tooth-brush.
US959574 *Jan 30, 1909May 31, 1910Joseph F MooreBrush.
US1199288 *Sep 3, 1915Sep 26, 1916Int Motor CoEngine-mounting.
US1407214 *May 26, 1920Feb 21, 1922Leon OsbornToothbrush
US1731751 *Sep 25, 1928Oct 15, 1929William M NeisslToothbrush
US1744271 *Jun 20, 1928Jan 21, 1930Useful Products CompanyToothbrush
US1947720 *Apr 9, 1931Feb 20, 1934Laub Stanley VToothbrush
US2486062 *Nov 13, 1946Oct 25, 1949Sr George S RidnerCollapsible toothbrush
US2617660 *Jun 8, 1950Nov 11, 1952Elliot Hadlock LesterDrawbar stay for tractors
GB339485A * Title not available
GB190924478A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2772433 *Apr 27, 1951Dec 4, 1956Nicholas A BrundaEconomy toothbrush
US3081783 *Nov 8, 1960Mar 19, 1963Miller JackSectional fountain type toothbrush
US3182345 *May 17, 1963May 11, 1965Westinghouse Electric CorpMeans for attaching appliance handles to a power drive shank
US3256031 *Jul 31, 1963Jun 14, 1966Dominion Electric CorpCoupling structure
US3399911 *Mar 21, 1966Sep 3, 1968Gen ElectricHub and shaft coupling
US3425756 *Oct 12, 1966Feb 4, 1969American Air Filter CoExtensible-retractable handles
US4139312 *Sep 29, 1976Feb 13, 1979Manuel SeinhartDisposable toothbrush
US4227276 *Feb 7, 1979Oct 14, 1980Ginsburg Stephen JToothbrush with thermally deformable handle
US4251897 *Mar 12, 1979Feb 24, 1981Naveed AlamDisposable toothbrush
US4300258 *Mar 24, 1980Nov 17, 1981E Z Paintr CorporationPaint applying tool
US4362174 *Jan 22, 1981Dec 7, 1982The Gillette CompanyToothbrushes
US4821752 *Jun 29, 1987Apr 18, 1989Jane WidlakOral hygiene apparatus having replaceable tooth engaging cleaning element and internal dental filament dispenser
US5058230 *Jun 4, 1990Oct 22, 1991Milton HodoshToothbrush with replaceable tip portion
US5224234 *Apr 18, 1991Jul 6, 1993Arsenault Jeffrey LToothbrush with replaceable bristles
US5247718 *Oct 13, 1992Sep 28, 1993Victorian Sherrynne O LToothbrush with replaceable bristle head
US5412831 *Feb 17, 1994May 9, 1995Mongelluzzo & Butta, Ltd.Toothbrush with replaceable brush head
US5471701 *Nov 30, 1994Dec 5, 1995Parfenie; MihaiToothbrush with ejectable head
US5511276 *May 22, 1995Apr 30, 1996Lee; Kuo-MingToothbrush with replaceable bristle carrier
US5581838 *Apr 7, 1995Dec 10, 1996Rocco; Anthony C.Articulating toothbrush assembly
US5862559 *Sep 11, 1997Jan 26, 1999Hunter; FrankToothbrush for interproximal and periodontal pocket cleaning
US6230356 *Jul 19, 1999May 15, 2001Park Hyo-MoonToothbrush
US6775875Jul 2, 2002Aug 17, 2004Paul A. SavaDental care instrument with pivoting track for detachable bristle bed
US6848344Jan 13, 2003Feb 1, 2005Anthony C. RoccoArticulating wrench assembly
US7431530Apr 12, 2005Oct 7, 2008Ned PowersToothbrush methods and apparatus
US8414294Mar 14, 2011Apr 9, 2013Robert D. McWhorterDental probe with bristles
US8448287Jul 14, 2011May 28, 2013Mcneil-Ppc, Inc.Replaceable toothbrush head
US8549693Apr 20, 2011Oct 8, 2013Gruber, LlcTooth cleaning device
US8997299Mar 15, 2013Apr 7, 2015Gruber, LlcTooth cleaning device
USRE36407 *Mar 12, 1998Nov 30, 1999Rocco; Anthony C.Articulating toothbrush assembly
EP0392987A1 *Mar 29, 1990Oct 17, 1990Felice EspostiToothbrush having an interchangeable bristle head and a mirror member at the other end of the handle
WO1993007778A1 *Oct 21, 1991Apr 29, 1993Milton HodoshToothbrush with replaceable tip portion
U.S. Classification15/176.6, 132/308, 15/167.1
International ClassificationA46B7/00, A46B7/04
Cooperative ClassificationA46B7/04
European ClassificationA46B7/04