Electromagnetic Clutch And Compressor
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United States of America Patent
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Issued Date -
Aug 25, 2016
app pub date -
Oct 8, 2013
filing date -
Oct 8, 2013
priority date (Note) -
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Abstract
To provide an electromagnetic clutch that prevents an armature from being reattracted to a rotor after a bridge wire is cut. Provided is an electromagnetic clutch 10 provided with a power interruption device 50 that forcibly interrupts power transmission to an electromagnetic coil 42. The power interruption device 50 includes a thermally-actuated member 51 attached to a rotor 21 and displaced at over a predetermined temperature, and a bridge wire 52 extending as a part of ground wire of the electromagnetic coil 42 and stretched across an area where the thermally-actuated member moves along with rotation of the rotor 21. The thermally-actuated member 51 is displaced to collide with and cut the bridge wire. The bridge wire 52 has a cutting region apart from a position where the displaced thermally-actuated member 51 collides with the bridge wire 52.
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