Power-operated toothbrush

Details Power-operated toothbrush Power-operated toothbrush

1977-12-02

1979-04-17

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Brushing

A46B 1302

Patent

active

041492919

ABSTRACT:
An electrically powered toothbrush with an eliptical brushing motion comprising a motor-operated rotating output drive and a disk rotatably mounted thereon, said disk having at least one eccentric funnel-shaped orifice which serves as an end bearing for a flexible direct drive shaft, a direct output shaft having one end bearing on said funnel-shaped orifice and the opposite end constructed as a holder for a brush, a second bearing for said shaft being located at a point between the two shaft ends, said output shaft having rigidity in one plane of the axis of rotation and flexibility in a perpendicular plane whereby an eliptical brush rotation is achieved as a result of tooth counterpressure again the brush, and a housing.

REFERENCES:
patent: 3133297 (1964-05-01), Gerber et al.
patent: 3183538 (1965-05-01), Hubner
patent: 3365963 (1968-01-01), Happe
patent: 3538530 (1970-11-01), Stemme
patent: 3945076 (1976-03-01), Sung

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