Actuating device of a recirculation pump for a cooling circuit of an internal combustion engine
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United States of America Patent
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Nov 5, 2013
Grant Date -
Aug 2, 2012
app pub date -
Apr 16, 2012
filing date -
Nov 23, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
Actuating device for a recirculation pump of a cooling circuit of an internal combustion engine comprising a pulley suitable for being rotationally driven by the engine, a driven shaft for driving the pump and an electromagnetically controlled coupling interposed between the pulley and the driven shaft, in which the electromagnetic coupling comprises an electromagnet, coupling mechanism controlled by the electromagnet and mobile between an engagement position in which the pulley is connected to the driven shaft and a disengagement position, and an elastic member for maintaining an engagement member in the engaged position when the electromagnet is not energized.
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