Tooth brush

Details Tooth brush Tooth brush

1977-02-25

1978-04-18

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Brushing

74 22R, A46B 1302

Patent

active

040842800

ABSTRACT:
A power tooth brush, including a barrel or casing with an electric motor therein. A rotating brush member has a shank fitted in the front end of the barrel with a brush element exposed to the exterior. Sleeve means drivingly interconnects the shank of the brush member and the drive shaft of the motor. The sleeve is of compound construction, including a fixed element and a movable element, with cam means interacting between the elements producing axial vibration of the brush member in response to its rotation. In one form, a battery is included for running the motor, so that the device is self-contained and in this form it is adapted for having a cap fitted thereon, whereby it is easily carried in the pocket and easily used in travel. Another form is adapted to plug-in operation.

REFERENCES:
patent: 1795098 (1931-03-01), Scadding
patent: 1945616 (1934-02-01), Mastrud
patent: 3270360 (1966-09-01), Kropp
patent: 3661018 (1972-05-01), Keefer et al.

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