Electromagnetic retarder with a built-in exciter
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United States of America Patent
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Feb 12, 2002
Grant Date -
N/A
app pub date -
Dec 13, 1999
filing date -
Dec 22, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electromagnetic retarder apparatus with a built-in exciter having a retarder exciter inside thereof for generating braking torque by an eddy current produced in an eddy-current cylinder as a plurality of magnetic poles that are alternately magnetized to N and S poles by a field current caused to flow by a voltage generated in the exciter are caused to rotate in a relation to the eddy-current cylinder disposed at a location facing the magnetic poles; the eddy-current cylinder comprises a core formed by laminating a magnetic material, and short-circuiting method provided on the laminated core in the axial direction thereof for causing the generated eddy current to flow therein.
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