Mechanical toothbrush

Details Mechanical toothbrush Mechanical toothbrush

1980-04-23

1982-03-23

McNeill, G. E.

Toilet

Nail device

Compound tools

132 84R, 15 22R, A45D 2400

Patent

active

043207740

ABSTRACT:
A brush drive unit is coupled to rotating means such as an electric motor. The brush drive unit maintains first and second belt brushes in an oval configuration and in fore and aft alignment. The brush drive unit causes the motor drive shaft to rotate the first and second belt brushes in opposing directions. The brush drive unit also includes a transmission assembly which is coupled between the motor drive shaft and the first and second belt brushes to alternately rotate the first belt brush in a first direction while maintaining the second belt brush in a substantially fixed position and for rotating the second belt brush in a second direction while maintaining the first belt brush in a substantially fixed position.

REFERENCES:
patent: 585933 (1897-07-01), Hanlon
patent: 684618 (1901-10-01), Schmidt
patent: 1097911 (1914-05-01), Brugger
patent: 1791812 (1931-02-01), Harrison
patent: 3233265 (1966-02-01), Hartmann
patent: 3592188 (1971-07-01), Barnett
patent: 3903906 (1975-09-01), Collis

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