Method and apparatus for tone arm magnetic stabilization and damping system
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United States of America Patent
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Jun 3, 2008
Grant Date -
Sep 14, 2006
app pub date -
Mar 11, 2005
filing date -
Mar 11, 2005
priority date (Note) -
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Abstract
A unipivot tone arm assembly wherein the tone arm is supported by a single point is balanced in such a way as to have neutral stability providing constant tracking force over the peaks and valleys of phonograph records. Lateral stability lacking in a neutral balanced unipivot tone arm is provided by magnetic coupling between magnets on the tone arm housing assembly and a freely rotating platform. Anti-skate is accomplished through a pulley mechanism between the rotating platform and the tone arm gantry, with the pulley on a counterweighted rotating pivot arm.
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