PROPULSION DEVICE FOR SHIP AND SHIP HAVING THE SAME
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United States of America Patent
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Issued Date -
Sep 4, 2014
app pub date -
Sep 23, 2011
filing date -
Jun 15, 2011
priority date (Note) -
Abandoned
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 first driveshaft; a front propeller positioned in front of the rear propeller and supported rotably on the first driveshaft; a counter rotation device, which penetrates the hull, and which counter-rotates the front propeller and the rear propeller on the basis of the rotation of a second driveshaft, which is installed perpendicular to the first driveshaft; and a housing installed so as to envelope the second driveshaft and the counter rotation device.
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