Rotary electric toothbrush with stroke-type bristle movement

Details Rotary electric toothbrush with stroke-type bristle movement Rotary electric toothbrush with stroke-type bristle movement

1996-10-28

1999-11-02

Graham, Gary K.

Brushing, scrubbing, and general cleaning

Machines

Brushing

15 28, 15 221, 74 23, A46B 1302

Patent

active

059746157

ABSTRACT:
An electric toothbrush (1) is described which incorporates a handle (2) and a brush attachment (3). The handle (2) houses an electric motor (8). Protruding from the handle (2) is a shaft (20), which is coupled to the electric motor (8). The brush attachment (3) can be mounted on the handle (2). The brush attachment (3) supports a bristle head (26) which can be coupled to the shaft (20), and from which protrude a multiplicity of bristles (4). In the operating mode, the bristle head (26) describes a rotary motion (49) and a stroke motion (50), with the frequency of the stroke movement (50) being higher, and preferably substantially higher, than the frequency of the rotary movement (49.) The stroke movement (50) provides a poking action of the bristles (4), which serves to loosen plaque from dental surfaces. The rotary movement (49) serves to wipe away plaque loosened from the dental surfaces.

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