Power toothbrush

Details Power toothbrush Power toothbrush

1993-08-23

1994-11-01

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Brushing

A61C 1734, A46B 1302

Patent

active

053597478

ABSTRACT:
A power toothbrush has a superior brushing effect achieved by a brush member which is given a reciprocal motion in the axial direction while at the same time the brush member itself is given a rotary motion and which has a simple construction and is of low cost. A drive shaft is mounted in a casing in such a way that it is free to move in the axial direction. The rotation of a drive motor mounted inside the casing is converted into a reciprocating motion and transmitted to the drive shaft by a first transmission mechanism. A rotary brush member is rotatably mounted on the end of an attachment connected to the drive shaft, and the reciprocating motion, in the axial direction, of the attachment is converted into a rotary motion and transmitted to the rotary brush member by a second transmission mechanism.

REFERENCES:
patent: 3661018 (1972-05-01), Keefer et al.
patent: 3978852 (1976-09-01), Annoni
patent: 4603448 (1986-08-01), Middleton et al.
patent: 5177826 (1993-01-01), Vrignaud et al.
patent: 5226206 (1993-07-01), Davidovitz et al.
patent: 5274870 (1994-01-01), Stollman

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