Eddy-current brake
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United States of America Patent
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Oct 8, 1991
Issued Date -
N/A
app pub date -
Jun 28, 1990
filing date -
Apr 30, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides an eddy-current brake comprising a rotator made of a ferromagnetic material and electromagnets arranged so that the rotator will intercept the magnetic flux, wherein a braking force is produced by the eddy current generated in the rotator. An Ni-Cu-Ni three-layer thin metallic cladding 30 is provided on the inner surface of the cylindrical peripheral wall portion 11 of the rotator 10, and the coils 45 of the electromanets 40 are enclosed by a magnetic pole case 46 made of a ferromagnetic material, thereby to enable development of a large braking torque. This device is suited for use as an auxiliary brake for vehicles.
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