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Publication numberUS2414775 A
Publication typeGrant
Publication dateJan 21, 1947
Filing dateSep 6, 1945
Priority dateSep 6, 1945
Publication numberUS 2414775 A, US 2414775A, US-A-2414775, US2414775 A, US2414775A
InventorsRobert W Stavely
Original AssigneeRobert W Stavely
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Toothbrush
US 2414775 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Jan. 21, 1947. R. w. STAVELY TOURUSH Fild Sept. 6, 1945 Patented Jan, 21, 1947 UNITED STATES PATENT OFFICE TOOTHBRUSH Robert W. Stavely, Detroit, Mich. Application September 6, 1945, Serial No. 614,673

1 Claim. 1 This invention relates to toothbrushes and has for it general object to provide a brush of this character which is so constructed as to enable the operator to effect a cleansin of the teeth by imparting a rotary movement to the bristle portion of the brush in a particularly efficient manner; also to provide a brush of this type which will enable the forego ng cleansing operation to be accomplished while also enabling the operator to efiect a cleansing of the teeth by movements of the bristle portion of the brush transversely of the axes of the latter as well as longitudinally of the axes thereof.

Further and more lim ted objects and advantages of my invention will be realized by the construction shown in the drawing hereof, wherein Fig. 1 represents a side elevational view of a brush constructed in accordance with my invention; Figs. 2, 3 and 4 are sectional views taken, respectively, on the lines 22, 3-3 and 4-4 of Fig. 1 and looking in the directions of the arrows; and Fig. 5 is a rear elevational view of the said brush.

The brush illustrated in the drawing comprises a handle, indicated generally at In, which has formed therewith the bristle support II. The handle proper, It), is comparatively short and is provided adjacent to the bristle support II with an outwardly convex frictional gripping portion or surface I 2 extending therearound and being coaxial with the axis of the handle, the said surface being shown as formed by mean of ribs 12* with intervening corrugations I2 In practice, the portion of the handle which extends rearwardly, or away from the bristles, is onl of sufiicient length to enable the end 13 to be pivotally supported against the little finger of the operator while the surface I2 is gripped between his thumb and forefinger. Due to this construction, the brush handle and the bristle carrier and bristles may be conveniently rotated, whereby the bristles l4 may be given an up-anddown movement, or movement longitudinally of the axes of the teeth, which movement is highly 2 recommended by dentists. Still further, the brush may be operated transversely of the teeth, either while the brush is being given the rotary to-and fro movements described hereinbefore, or while such movements are suspended.

For the purpose of obtaining a balance of weight about the axis of the brush as a whole, the bristle carrier l I is given an arcuate form, as shown, while the outer ends of the bristles preferably conform to a curve which is opposed and complementary to the curvature of the inner surface of the bristle carrier and with both curves being preferably symmetrical with respect to the axis and having their ends in substantially the plane of said axis.

Having thus described my invention, what I claim is:

A toothbrush comprising an elongated handle and a bristle-carrier connected thereto and extending outwardly from one end thereof, the bristle-carrier being provided with bristles and having its inner surface concave in the direction of the longitudinal axis of the handle and the outer ends of the bristles conforming to a curve which is convex and which is opposed to and substantially complementary to the curvature of the inner surface of the bristle-carrier and withv both curves substantially symmetrical with respect to the axis of the brush handle and having their ends substantially lying in the extended axis of said handle, the handle being provided adjacent to the bristle-carrier with a gripping portion extending therearound, the said gripping portion being generally circular in section and extending symmetrically about the axis of said handle, whereby a substantial balance of weight of the brush as a whole about the axis of said handle may be obtained, and the portion of the handle which extends from the bristle-carrier being of such length as to enable the end of the same to engage and pivot upon a finger of the operator which is remote from the forefinger.

ROBERT W. STAVELY.

Non-Patent Citations
Reference
1 *None
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2651068 *Nov 18, 1950Sep 8, 1953Min TsubotaConformable toothbrush and tongue scraper
US4274174 *Feb 6, 1980Jun 23, 1981G.R.P. Gesellschaft Fur Rationelle Psychologie OhgToothbrush
US4672706 *Dec 27, 1985Jun 16, 1987Stratford LaboratoriesToothbrush
US5305489 *Apr 13, 1993Apr 26, 1994Lage Gregg LErgonomic topographic toothbrush
US5628082 *Mar 22, 1995May 13, 1997Colgate-Palmolive CompanyToothbrush with improved efficacy
US6438785 *Apr 6, 1999Aug 27, 2002Jodie L. SmithStyling brush
US7007335 *Feb 16, 2000Mar 7, 2006Pierre Fabre SanteToothbrush spontaneously taking up stable equilibrium position on a horizontal support
US8943634May 2, 2012Feb 3, 2015Water Pik, Inc.Mechanically-driven, sonic toothbrush system
US20140332028 *Feb 10, 2014Nov 13, 2014Andy Thang TranToothbrush with gripping handle
US20140352719 *Jun 4, 2013Dec 4, 2014Andy Thang TranToothbrush with gripping handle
EP0251705A1 *Jun 25, 1987Jan 7, 1988Johnson & Johnson Products Inc.A toothbrush
WO1989004619A1 *Nov 18, 1988Jun 1, 1989Elequip Professional LimitedHair brushes
Classifications
U.S. Classification15/167.1, 15/143.1
International ClassificationA46B5/02
Cooperative ClassificationA46B5/026, A46B5/02, A46B2200/1066
European ClassificationA46B5/02D, A46B5/02