Electromagnetic Clutch
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United States of America Patent
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N/A
Issued Date -
Jan 29, 2015
app pub date -
Feb 19, 2013
filing date -
Feb 23, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An electromagnetic clutch includes: a rotor 1 including therein an electromagnetic coil 16; and an armature 2 facing the rotor 1 and caused to be attached to the rotor 1 by a magnetic force of the electromagnetic coil 16. By excitation of the electromagnetic coil 16, a magnetic circuit M1 from the rotor 1 back to the rotor 1 through a first armature plate 21, an intermediate layer 22, a second armature plate 23, the intermediate layer 22, and the first armature plate 21 is formed when the rotor 1 and the armature 2 are not in contact, and a magnetic circuit M2 from the rotor 1 back to the rotor 1 through the first armature plate 21, a part 13a between adjacent slits 14 of the rotor 1, and the first armature plate 21 is formed when the rotor 1 and the armature 2 are in contact.
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