Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1994-12-01
1996-04-09
Roberts, Jr., Edward L.
Brushing, scrubbing, and general cleaning
Machines
Brushing
A61C 1734
Patent
active
055049583
ABSTRACT:
The invention is directed to an electric toothbrush including a brush unit (1) adapted to be push-fitted to a handle unit. The brush unit (1) accommodates a rotary camshaft (4) as well as a series of bristle holders (11, 12, 13, 14, 15, 16) provided with tufts (17) of bristles and disposed approximately transversely relative to the camshaft (4). The bristle holders (11, 12, 13, 14, 15, 16) are pivotally mounted on two mounting pins (8, 9) extending parallel to the camshaft (4), thus enabling the bristle holders (11, 12, 13, 14, 15, 16) to be moved in a motion about the mounting pin (8, 9) by the camshaft (4). The two mounting pins (8, 9) are arranged on either side of an imaginary first plane (18) aligned approximately parallel to the bristle tufts (17) and extending lengthwise through the camshaft (4), and each of the bristle holders (11, 12, 13, 14, 15, 16) includes an opening (19, 20) for receiving one of the two mounting pins (8, 9). By virtue of the off-center arrangement of the two mounting pins (8, 9), the bristle tufts (17) perform not only a wiping motion approximately parallel to the tooth surface but also an additional pushing motion transversely relative to the tooth surface.
REFERENCES:
patent: 5077855 (1992-01-01), Ambasz
patent: 5259083 (1993-11-01), Stansbury, Jr.
Braun Aktiengesellschaft
Roberts, Jr. Edward L.
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