TORQUE DETECTOR
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United States of America Patent
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Issued Date -
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app pub date -
Sep 7, 2016
filing date -
Jul 18, 2016
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A torque detector on an axle is provided with a torque transferring sleeve rotatably disposed on the axle and including a power input at one end, a power output at the other end, first and second spiral ribs on an intermediate portion of an outer surface, the second spiral ribs extending in a spiral direction opposite to that of the first spiral ribs; a first electromagnetic coil core formed of a material having magnetic permeability, surrounded by the first spiral ribs, and secured to the axle; a second electromagnetic coil core formed of a material having magnetic permeability, surrounded by the second spiral ribs, and secured to the axle; and a winding wound about the first and second electromagnetic coil cores. In response to a torque exerted on the torque transferring sleeve, the winding detects a magnetic permeability change of each of the first and second spiral ribs.
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