Toothbrush with adaptive load sensor

Details Toothbrush with adaptive load sensor Toothbrush with adaptive load sensor

1995-06-23

1998-07-28

Graham, Gary K.

Brushing, scrubbing, and general cleaning

Machines

Brushing

151671, 433216, 340665, 340679, A46B 1302

Patent

active

057847428

ABSTRACT:
An electric toothbrush (10) with an adaptive load sensor (12) is disclosed. The toothbrush of this invention includes a brushhead (16) that is vibrated by a drive assembly (18). The load sensor monitors the current drawn by the drive assembly to determine the mechanical load to which the toothbrush is exposed. The load sensor assembly produces an adaptive threshold signal that represents the instantaneous maximum pressure load. If the sensed load voltage exceeds the adaptive threshold signal, the load sensor assembly deenergizes the drive assembly and generates an alarm signal so as to give the user a warning that the toothbrush has been excessively loaded.

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Translation of Swiss 609,238 Bugnion, S.A., Feb. 1979, All translated pages (9) plus cover page (1) 10 total pages.

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