Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1993-02-25
1993-11-23
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
Brushing
310 29, 310 36, 318119, A61C 1734, B08B 100
Patent
active
052632180
ABSTRACT:
A toothbrush which includes a toothbrush body (12) and a lever arm (14) having toothbrush bristles (18) at one end thereof. The lever arm (14) is mounted for pivotal movement at a pivot member (16) which is in the vicinity of the other end of the lever arm (14). In one embodiment, a pair of permanent magnets (44, 46) are provided at the other end of the lever arm (14), positioned side-by-side with opposite polarities. An electromagnet (24) is provided to the rear of the lever arm (14). The electromagnet (24) includes an E-core having top, bottom and center legs (30, 31, 33) with a coil (36) wound around its center leg (33) which receives an alternating current driving signal from an oscillator/battery section (38). The frequency of operation is in the range of 150-400 Hz. The action of the alternating current in the electromagnet (24) causes the lever arm (14) to move about the pivot member (16), first in one direction and then in an opposing direction to provide the desired vibrating effect.
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Giuliani David
Martin Roy W.
Rosenbaum Rodger H.
GEMtech
Roberts Edward L.
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