Propulsion device for ship and ship having the same
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United States of America Patent
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Jul 4, 2017
Grant Date -
Jan 29, 2015
app pub date -
Sep 23, 2011
filing date -
Jun 15, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed are a propulsion device for a ship and a ship having same. The propulsion device, according to an embodiment of the present invention, comprises: a rear propeller fixed to a driveshaft; a front propeller positioned in front of the rear propeller, and supported rotably on the driveshaft; and a counter rotation device for reversing and transmitting the rotation of the driveshaft to the front propeller; a motor for rotating the driveshaft; and an housing, which extends from to the lower part of the hull, and which is installed so as to envelope the counter rotation device and the motor.
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