Electronic toothbrush

Details Electronic toothbrush Electronic toothbrush

1991-08-22

1992-07-28

Hornsby, Harvey C.

Brushing, scrubbing, and general cleaning

Implements

Brush or broom

151766, 128 245, 128393, 604 20, A46B 904

Patent

active

051331020

ABSTRACT:
An electronic toothbrush has a handle accommodating a light-emitting diode and a sound-producing device as well as an electric circuit for actuating the diode and device. When a current is caused to flow through the toothbrush by grasping the brush and bringing it into contact with the teeth, light and sound are emitted to notify the user that the toothbrush is operating.

REFERENCES:
patent: 407115 (1889-07-01), Pratt
patent: 1948990 (1934-02-01), Mitlehner
patent: 2834344 (1958-05-01), Kanai
patent: 3478741 (1969-11-01), Simor
patent: 3533119 (1970-10-01), Dokos
patent: 4476604 (1984-10-01), White et al.
patent: 4665921 (1987-05-01), Teranishi et al.
patent: 4691718 (1987-09-01), Sakuma et al.
patent: 4726806 (1988-02-01), Hakuba
patent: 4744124 (1988-05-01), Wang et al.
patent: 4788734 (1988-12-01), Bauer
patent: 4944296 (1990-07-01), Suyama

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