Nodal spring assembly for an electronic toothbrush
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United States of America Patent
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Aug 9, 2016
Grant Date -
Dec 27, 2012
app pub date -
Jun 27, 2011
filing date -
Jun 30, 2006
priority date (Note) -
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Abstract
A nodal-mounted spring arrangement for an electronic toothbrush includes a V-shaped spring member secured at both ends so that it can operate in out-of-phase torsion mode along the axial dimension thereof. In one embodiment, the V-shaped spring member includes two extended end regions, which extend below a longitudinal edge of the middle portion of the V-spring. The free ends of the extended portions are joined by a flat cross-piece. This “closed end” region is present at both ends of the V-spring.
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