Motor-driven toothbrush

Details Motor-driven toothbrush Motor-driven toothbrush

1990-06-05

1992-01-07

Coe, Philip R.

Brushing, scrubbing, and general cleaning

Machines

Brushing

15 222, 74 22R, A46B 1302, A46B 706

Patent

active

050778552

ABSTRACT:
A motor-driven toothbrush comprises a drive unit having a motor and a transmission that simultaneously drive a shaft in rotation and a brush head extension reciprocably in a direction parallel to the axis of the shaft. A brush unit includes a brush head coupled to the extension for lengthwise reciprocating motion on which several bristle holders, each carrying several bristle tufts, are mounted individually for pivotal movement about an axis spaced apart from and parallel to the drive shaft. A crank coupled to the drive shaft imparts pivotal movement to each bristle holder individually via a crank pin for each holder.

REFERENCES:
patent: 1517320 (1924-12-01), Stoddart
patent: 2184850 (1939-12-01), Schloss
patent: 2196667 (1940-04-01), Moseley
patent: 2278365 (1942-03-01), Daniels
patent: 3562566 (1971-02-01), Kircher
patent: 3935869 (1976-02-01), Reinsch
patent: 4545087 (1985-10-01), Nahum

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