Toothbrush

Details Toothbrush Toothbrush

1985-04-12

1987-10-13

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Brushing

15105, 15167R, A46B 1302

Patent

active

046988696

ABSTRACT:
An electrically operated toothbrush comprises a housing with an electromotor inside the housing. The motor includes a rotatable shaft, means converting the rotary movement of the rotary shaft to an oscillatory movement of a brush support shaft which extends through the housing, and a toothbrush is attached to the free end of the support shaft outside of the housing. Sensing structure generates an impulse representative of the pressure exerted on the toothbrush during toothbrushing. A microprocessor or electronic device receives the impulses from the sensing structure during toothbrushing and compares those impulses with stored information representative of a predetermined optimum pressure range for toothbrushing. A signal transmittor releases a signal perceptible by the user of the toothbrush when the pressure on the toothbrush exceeds the predetermined optimum pressure range.

REFERENCES:
patent: 4253212 (1981-03-01), Fujita
patent: 4450599 (1984-05-01), Scheller et al.
patent: 4476604 (1984-10-01), White et al.

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