Propulsion apparatus for ship
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United States of America Patent
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-
Jun 30, 2020
Grant Date -
Jun 28, 2018
app pub date -
Jan 19, 2018
filing date -
May 4, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Provided is a ship propelling apparatus including a rotation shaft on which a rear propeller is fixed; a front propeller rotatably supported on the rotation shaft in front of the rear propeller; and a counter-rotating device through which the rotation shaft passes, which includes a gear box including therein a plurality of gears configured to reverse rotation of the rotation shaft and transfer the reversed rotation to the front propeller, and which is installed in an installation space formed at the rear of a ship. The rotation shaft includes a measurement hole formed to pass through a center of the rotation shaft for centering of the counter-rotating device installed in the installation space; and an individual lubricant path separated from the measurement hole.
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