Spiral linear motor
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United States of America Patent
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Feb 13, 2007
Grant Date -
Dec 8, 2005
app pub date -
Oct 24, 2003
filing date -
Nov 5, 2002
priority date (Note) -
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Abstract
A motor producing a rectilinear drive force can be simultaneously provided with a small size and a lightweight, high accuracy and a large drive force.In a spiral linear motor 1, a rotator 3 and stator 2 are both constituted having a spiral shape and, by joining together both spiral-shaped parts, a drive force is produced in the axial direction during rotation in a spiral shape. By affording the spiral linear motor a spiral shape, a large drive force can be obtained similarly to that of a reduction gear and a large drive force can be obtained by utilizing a large area that lies opposite in the axial direction of the rotator and stator.
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