Electric toothbrush
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United States of America Patent
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-
Apr 9, 1996
Grant Date -
N/A
app pub date -
Dec 1, 1994
filing date -
Dec 17, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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Cited Art Landscape
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