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.

Patents

  1. Advanced Patent Search
Publication numberUS3451086 A
Publication typeGrant
Publication dateJun 24, 1969
Filing dateFeb 27, 1967
Priority dateFeb 27, 1967
Publication numberUS 3451086 A, US 3451086A, US-A-3451086, US3451086 A, US3451086A
InventorsBurgett Elbert B
Original AssigneeBurgett Elbert B
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Rotary toothbrush
US 3451086 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Jun24,1969 EBBURGETT 3,451,086

ROTARY TOOTHBRUSH Filed Feb. 27, 1967 United States Patent O 3,451,086 ROTARY TOOTHBRUSH Elbert B. Burgett, 2809 N. 3rd St., Flagsta, Ariz. 86001 Filed Feb. 27, 1967, Ser. No. 618,774 Int. Cl. A46b 13/02; F16h 21/26 U.S. CL 15--23 1 Claim ABSTRACT OF THE DISCLOSURE This invention relates generally to self powered toothbrushes. More specifically it relates to rotary toothbrushes.

A principal object of the present invention is to provi-de a rotary toothbrush which includes a shield over a portion of the brush so to prevent rubbing and irritating the tongue and other tissue of the mouth during -brushing operation.

Another object is to provide an improved rotary toothbrush which has a hollow handle containing a battery powered motor for rotating the brush, the ymotor being reversible in direction so that it may be used for :brushing both upper and lower teeth in an approved manner which is brushing away from the gums toward the tips of the teeth.

Yet another more specific object of the invention is to provide a rotary tooth brush wherein the Ibrush has a combined rotary and axial reciprocating motion causing more effective cleansing.

Other objects are to provide `an improved rotary toothbrush which is simple in design, inexpensive to manufacture, rugged in construction, easy to use and efficient in operation.

These and other objects will be readily evident upon a study of the following specification and the accompanying `drawing wherein:

FIGURE 1 is a perspective lview of a toothbrush incorporating the invention,

FIGURE 2 is an end view thereof shown in operative use,

FIGURE 3 is an electric circuit diagram thereof,

FIGURE 4 is a perspective view of a fmodified form of the invention, and

FIGURE 5 is a cross sectional View taken on line 5-5 of FIGURE 4.

Referring now to the drawing in detail, the reference numeral represents an improved rotary toothbrush according to the present invention wherein there is a handle 11 which supports a brush 12.

The handle 11 comprises a walled case 12 having a central compartment therein for containing an electric motor 13, a dry cell battery 14 or other -power source, a rheostat 15 and an electric switch 16, all in circuit; the switch 16 having a button 17 protruding outward of the case for movement between a forward position 18 a reverse position 19 and an off position 20 designated on the case. 65

The rheostat likewise has a rotatable knob 21 on the outside of the case for manual adjustment between a high and low speed position 22 and 23 respectively, also designate-d on the case.

A motor shaft 24 extends outward of the case end 25 and carries the cylindrical brush 12 at its end. A guard or shield 27 having a semi-cylindrical configuration covers a side of the brush, the shield being secured by screws 28 to the case.

In operative use, the brush is held against the teeth 29 and activated to rotate in a direction away from the gums 30, as indicated by arrow 31 in FIGURE 2.

In FIGURES 4 and 5, a modifie-d construction 32 is shown to comprise the above described structure and wherein the brush 33 has a longitudinal bare sector 34 Without any bristles 35. The shield 36 has a radially inwardly projecting, ldiagonally positioned comb 37 formed on its concave inner side 38, the comb 'having teeth 39. Each tooth has one longer and shorter side in the manner of saw teeth. A disc 40 is integrally formed on motor shaft 41, and a compression lcoil spring 42 bears at one end on the disc and at its other end against the case 43, normally urging the shaft outwardly. The shaft `41 `is mounted in the housing 11 in a manner which permits axial movement, that is, the shaft can move longitudinally of the housing a predetermined distance. This shaft can be provided with axially spaced stops to limit such 4axial motion (not shown).

In operative use, when the brush is rotating, the bristles rub against the diagonally positioned com-b causing the brush to move longitudinally toward the handle. When the bare sector 34 comes into alignment with the comb, the longitudinal pressure is released and the spring 42 returns the brush outwardly along the longitudinal axis thus resulting in a reciprocal longitudinal brush movement during the rotation thereof. This gives greater brushing activity.

Obviously sponge rubber -may be substituted for the bristles in this invention.

The novel features and the operation of this device will be apparent from the foregoing description. While the device has been shown and the structure described in detail, it is obvious that this is not to be considered limited to the exact form disclosed, and that changes may be made therein within the scope and the spirit of the invention.

I claim:

1. In a rotary toothbrush, the combination of a handle, a shaft extending from said handle and axially slidable in said handle, a cylindrical brush on said shaft and having a bare portion extending axially of the shaft, means on said handle to rotate said shaft, means normally biasing said shaft outwardly from said handle, a shield mounted on said handle and enclosing a portion of the brush, an abutment mounted on the shield and angularly disposed relative to the bare portion and adapted to Contact the brush and to exert axial force on said brush to move said shaft axially relative to said handle as said brush rotates, whereby the shaft is caused to simultaneously rotate and reciprocate axially providing effective clearing action.

References Cited UNITED STATES PATENTS 1,247,484 11/ 1917 Albrecht 15-24 1,795,098 3/1931 Scadding 15-23 2,279,982 4/ 1942 Glynn 15-23 2,840,837 7/ 1958 Gustems 15--23 3,033,197 5/ 1962 Barckley. 3,034,376 5/1962 Gonzalez.

EDWARD L. ROBERTS, Primary Examiner.

U.S. Cl. X.R. 74-22

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1247484 *Feb 27, 1917Nov 20, 1917Louis C Albrecht JrShaving-brush.
US1795098 *Jan 26, 1928Mar 3, 1931Scadding Frederick CDental appliance
US2279982 *Mar 15, 1939Apr 14, 1942Glynn Henry LRotary toothbrush
US2840837 *Sep 21, 1956Jul 1, 1958Edward GustemsReversible electric toothbrush
US3033197 *Mar 3, 1961May 8, 1962Jules Barckley JohnneyBattery operated rotary toothbrush
US3034376 *Feb 14, 1958May 15, 1962Gonzalez ReinaldoMulti-purpose power-driven hand tool
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3859684 *Jun 18, 1973Jan 14, 1975Moskwinski John ABrush
US4471504 *Jan 13, 1983Sep 18, 1984Bengt AnderssonToothbrush
US4683897 *May 8, 1985Aug 4, 1987Mcbride Julia KElectric nail filing device
US4796323 *Dec 31, 1986Jan 10, 1989Dieter BenzElectric toothbrush
US4845796 *Jul 24, 1987Jul 11, 1989Randy MosleyRotating flexible stem tooth brush
US4882801 *Apr 12, 1988Nov 28, 1989Dieter BenzElectric toothbrush
US5353461 *Sep 20, 1993Oct 11, 1994Kevin EnriquezRotary scrubber apparatus
US5699575 *Oct 23, 1995Dec 23, 1997Peifer; Melvin W.Flexible rotary toothbrush
US8089227 *Mar 14, 2007Jan 3, 2012Trisa Holding AgElectrically operated, continuously adjustable personal hygiene device
US8132541 *Dec 22, 2009Mar 13, 2012Baer Jr Thomas LRotating hairbrush device
US8756743Dec 22, 2011Jun 24, 2014Trisa Holding AgToothbrush head
DE2757590A1 *Dec 23, 1977Jun 28, 1979Werner StoltzAngetriebene zahnbuerste
DE2857650C2 *Nov 9, 1978Jan 15, 1987Bengt AnderssonZahnbürste
DE2940275A1 *Oct 4, 1979Apr 16, 1981Krups Fa RobertZahnbuerste mit elektrischem antrieb
DE3027137A1 *Jul 17, 1980Feb 11, 1982Benz DieterVorrichtung zum buersten von zaehnen
DE3152090C2 *Jun 19, 1981Apr 19, 1990Petz, Guenter, 8500 Nuernberg, DeTitle not available
DE3211984A1 *Mar 31, 1982Dec 9, 1982Benz DieterVorrichtung zum buersten von zaehnen
DE3301865A1 *Jan 21, 1983Jul 26, 1984Mirz HorstElectric toothbrush
DE3309691A1 *Mar 18, 1983Sep 20, 1984Thomas HorchElectrical toothbrush
DE3342374A1 *Nov 21, 1983Apr 19, 1984Gerard H SeeligerTooth cleaning device
EP0015183A1 *Feb 4, 1980Sep 3, 1980Société Civile VIDAElectric tooth-brush
EP0054043A1 *Jun 19, 1981Jun 23, 1982Frank Mitchell HunterElectrically driven toothbrush.
WO1980000909A1 *Nov 9, 1978May 15, 1980B AnderssonToothbrush
WO2006104499A2 *May 2, 2005Oct 5, 2006Milestone Scientific IncTemperature regulated heat-emitting device and method of whitning teeth
Classifications
U.S. Classification15/23, 119/609, 74/22.00R
International ClassificationA61C17/26, A61C17/34, A61C17/16
Cooperative ClassificationA61C17/26, A61C17/3418, A61C17/3472, A61C17/3445
European ClassificationA61C17/26, A61C17/34A7