Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1997-03-04
1999-08-03
Till, Terrence R.
Brushing, scrubbing, and general cleaning
Machines
Brushing
368 10, A46B 1302
Patent
active
059308583
ABSTRACT:
The invention is directed to a method and an electric toothbrush which includes a timing circuit (7) serving to signal to a user the expiration of a first period (T1), that is, the expiration of the optimum brushing time, following activation of the electric toothbrush. Further, an On/Off switching device (4) is provided which is controllable by the timing circuit (7) and by means of which the electric toothbrush can be turned on and off. The timing circuit (7) controls the On/Off switching go0 device (4) such that following expiration of the first period (T1) the electric toothbrush is turned on and off repeatedly within a second period (T2). As a result, the user of the electric toothbrush "senses" directly the end of the first period (T1), that is, the end of the optimum brushing time, from the variation in the operating mode of the electric toothbrush.
REFERENCES:
patent: 4450599 (1984-05-01), Scheller et al.
patent: 5089998 (1992-02-01), Rund
patent: 5559761 (1996-09-01), Frenkel
patent: 5561881 (1996-10-01), Klinger et al.
patent: 5704087 (1998-01-01), Strub
Copy of International Search Report dated Jan. 18, 1996.
Braun Aktiengesellschaft
Till Terrence R.
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