Electric toothbrush

Details Electric toothbrush Electric toothbrush

2005-01-04

2005-01-04

Warden, Sr., Robert J. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

Brushing

C015S022200, C015S022400

Reexamination Certificate

active

06836918

ABSTRACT:
An electric toothbrush is provided a cam mechanism and a crank mechanism in the handle. The cam mechanism comprises a cam, mounted on a rotary shaft of a motor via a frame; and a slave unit making a reciprocating movement, defined within the handle and engaged with the cam. The crank mechanism comprises a crank, mounted concentrically with the brush head; a link rod, jointed with the crank; and a block, defined within the brush body and engaged with the slave unit. Therefore, the structure of the electric toothbrush of the present invention is simplified, thus its cost can be reduced accordingly. In addition, the brush head of the present invention can be formed star shape or be inclined to improve the area of contact for super cleaning and be convenient for removing the deposit on the teeth.

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patent: 20020066147 (2002-06-01), Schutz
patent: 20030084528 (2003-05-01), Chan et al.

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